feat: delete dashboard v2 API

# Conflicts:
#	pkg/modules/tag/impltag/module.go
#	pkg/modules/tag/tag.go
#	pkg/types/tagtypes/tag_test.go

cmd/community/server.go

@@ -29,6 +29,7 @@ import (
 	"github.com/SigNoz/signoz/pkg/modules/cloudintegration/implcloudintegration"
 	"github.com/SigNoz/signoz/pkg/modules/dashboard"
 	"github.com/SigNoz/signoz/pkg/modules/dashboard/impldashboard"
+	"github.com/SigNoz/signoz/pkg/modules/tag"
 	"github.com/SigNoz/signoz/pkg/modules/organization"
 	"github.com/SigNoz/signoz/pkg/modules/retention"
 	"github.com/SigNoz/signoz/pkg/modules/rulestatehistory"
@@ -103,8 +104,8 @@ func runServer(ctx context.Context, config signoz.Config, logger *slog.Logger) e
 
 			return openfgaauthz.NewProviderFactory(sqlstore, openfgaschema.NewSchema().Get(ctx), openfgaDataStore, authtypes.NewRegistry()), nil
 		},
-		func(store sqlstore.SQLStore, settings factory.ProviderSettings, analytics analytics.Analytics, orgGetter organization.Getter, queryParser queryparser.QueryParser, _ querier.Querier, _ licensing.Licensing) dashboard.Module {
-			return impldashboard.NewModule(impldashboard.NewStore(store), settings, analytics, orgGetter, queryParser)
+		func(store sqlstore.SQLStore, settings factory.ProviderSettings, analytics analytics.Analytics, orgGetter organization.Getter, queryParser queryparser.QueryParser, _ querier.Querier, _ licensing.Licensing, tagModule tag.Module) dashboard.Module {
+			return impldashboard.NewModule(impldashboard.NewStore(store), store, settings, analytics, orgGetter, queryParser, tagModule)
 		},
 		func(_ licensing.Licensing) factory.ProviderFactory[gateway.Gateway, gateway.Config] {
 			return noopgateway.NewProviderFactory()

cmd/enterprise/server.go

@@ -48,6 +48,7 @@ import (
 	pkgcloudintegration "github.com/SigNoz/signoz/pkg/modules/cloudintegration/implcloudintegration"
 	"github.com/SigNoz/signoz/pkg/modules/dashboard"
 	pkgimpldashboard "github.com/SigNoz/signoz/pkg/modules/dashboard/impldashboard"
+	"github.com/SigNoz/signoz/pkg/modules/tag"
 	"github.com/SigNoz/signoz/pkg/modules/organization"
 	"github.com/SigNoz/signoz/pkg/modules/retention"
 	"github.com/SigNoz/signoz/pkg/modules/rulestatehistory"
@@ -151,8 +152,8 @@ func runServer(ctx context.Context, config signoz.Config, logger *slog.Logger) e
 			}
 			return openfgaauthz.NewProviderFactory(sqlstore, openfgaschema.NewSchema().Get(ctx), openfgaDataStore, licensing, onBeforeRoleDelete, authtypes.NewRegistry()), nil
 		},
-		func(store sqlstore.SQLStore, settings factory.ProviderSettings, analytics analytics.Analytics, orgGetter organization.Getter, queryParser queryparser.QueryParser, querier querier.Querier, licensing licensing.Licensing) dashboard.Module {
-			return impldashboard.NewModule(pkgimpldashboard.NewStore(store), settings, analytics, orgGetter, queryParser, querier, licensing)
+		func(store sqlstore.SQLStore, settings factory.ProviderSettings, analytics analytics.Analytics, orgGetter organization.Getter, queryParser queryparser.QueryParser, querier querier.Querier, licensing licensing.Licensing, tagModule tag.Module) dashboard.Module {
+			return impldashboard.NewModule(pkgimpldashboard.NewStore(store), store, settings, analytics, orgGetter, queryParser, querier, licensing, tagModule)
 		},
 		func(licensing licensing.Licensing) factory.ProviderFactory[gateway.Gateway, gateway.Config] {
 			return httpgateway.NewProviderFactory(licensing)

ee/modules/dashboard/impldashboard/module.go

@@ -11,8 +11,10 @@ import (
 	"github.com/SigNoz/signoz/pkg/modules/dashboard"
 	pkgimpldashboard "github.com/SigNoz/signoz/pkg/modules/dashboard/impldashboard"
 	"github.com/SigNoz/signoz/pkg/modules/organization"
+	"github.com/SigNoz/signoz/pkg/modules/tag"
 	"github.com/SigNoz/signoz/pkg/querier"
 	"github.com/SigNoz/signoz/pkg/queryparser"
+	"github.com/SigNoz/signoz/pkg/sqlstore"
 	"github.com/SigNoz/signoz/pkg/types"
 	"github.com/SigNoz/signoz/pkg/types/coretypes"
 	"github.com/SigNoz/signoz/pkg/types/ctxtypes"
@@ -30,9 +32,9 @@ type module struct {
 	licensing          licensing.Licensing
 }
 
-func NewModule(store dashboardtypes.Store, settings factory.ProviderSettings, analytics analytics.Analytics, orgGetter organization.Getter, queryParser queryparser.QueryParser, querier querier.Querier, licensing licensing.Licensing) dashboard.Module {
+func NewModule(store dashboardtypes.Store, sqlstore sqlstore.SQLStore, settings factory.ProviderSettings, analytics analytics.Analytics, orgGetter organization.Getter, queryParser queryparser.QueryParser, querier querier.Querier, licensing licensing.Licensing, tagModule tag.Module) dashboard.Module {
 	scopedProviderSettings := factory.NewScopedProviderSettings(settings, "github.com/SigNoz/signoz/ee/modules/dashboard/impldashboard")
-	pkgDashboardModule := pkgimpldashboard.NewModule(store, settings, analytics, orgGetter, queryParser)
+	pkgDashboardModule := pkgimpldashboard.NewModule(store, sqlstore, settings, analytics, orgGetter, queryParser, tagModule)
 
 	return &module{
 		pkgDashboardModule: pkgDashboardModule,
@@ -197,6 +199,89 @@ func (module *module) Create(ctx context.Context, orgID valuer.UUID, createdBy s
 	return module.pkgDashboardModule.Create(ctx, orgID, createdBy, creator, data)
 }
 
+func (module *module) CreateV2(ctx context.Context, orgID valuer.UUID, createdBy string, creator valuer.UUID, postable dashboardtypes.PostableDashboardV2) (*dashboardtypes.DashboardV2, error) {
+	return module.pkgDashboardModule.CreateV2(ctx, orgID, createdBy, creator, postable)
+}
+
+func (module *module) GetV2(ctx context.Context, orgID valuer.UUID, id valuer.UUID) (*dashboardtypes.DashboardV2, error) {
+	return module.pkgDashboardModule.GetV2(ctx, orgID, id)
+}
+
+func (module *module) UpdateV2(ctx context.Context, orgID valuer.UUID, id valuer.UUID, updatedBy string, updateable dashboardtypes.UpdateableDashboardV2) (*dashboardtypes.DashboardV2, error) {
+	return module.pkgDashboardModule.UpdateV2(ctx, orgID, id, updatedBy, updateable)
+}
+
+func (module *module) PatchV2(ctx context.Context, orgID valuer.UUID, id valuer.UUID, updatedBy string, patch dashboardtypes.PatchableDashboardV2) (*dashboardtypes.DashboardV2, error) {
+	return module.pkgDashboardModule.PatchV2(ctx, orgID, id, updatedBy, patch)
+}
+
+func (module *module) DeleteV2(ctx context.Context, orgID valuer.UUID, id valuer.UUID) error {
+	return module.store.RunInTx(ctx, func(ctx context.Context) error {
+		if err := module.store.DeletePublic(ctx, id.String()); err != nil && !errors.Ast(err, errors.TypeNotFound) {
+			return err
+		}
+		return module.pkgDashboardModule.DeleteV2(ctx, orgID, id)
+	})
+}
+
+func (module *module) LockUnlockV2(ctx context.Context, orgID valuer.UUID, id valuer.UUID, updatedBy string, isAdmin bool, lock bool) error {
+	return module.pkgDashboardModule.LockUnlockV2(ctx, orgID, id, updatedBy, isAdmin, lock)
+}
+
+func (module *module) CreatePublicV2(ctx context.Context, orgID valuer.UUID, id valuer.UUID, postable dashboardtypes.PostablePublicDashboard) (*dashboardtypes.DashboardV2, error) {
+	if _, err := module.licensing.GetActive(ctx, orgID); err != nil {
+		return nil, errors.New(errors.TypeLicenseUnavailable, errors.CodeLicenseUnavailable, "a valid license is not available").WithAdditional("this feature requires a valid license").WithAdditional(err.Error())
+	}
+
+	existing, err := module.pkgDashboardModule.GetV2(ctx, orgID, id)
+	if err != nil {
+		return nil, err
+	}
+	if existing.PublicConfig != nil {
+		return nil, errors.Newf(errors.TypeAlreadyExists, dashboardtypes.ErrCodePublicDashboardAlreadyExists, "dashboard with id %s is already public", id)
+	}
+
+	publicDashboard := dashboardtypes.NewPublicDashboard(postable.TimeRangeEnabled, postable.DefaultTimeRange, id)
+	if err := module.store.CreatePublic(ctx, dashboardtypes.NewStorablePublicDashboardFromPublicDashboard(publicDashboard)); err != nil {
+		return nil, err
+	}
+
+	existing.PublicConfig = publicDashboard
+	return existing, nil
+}
+
+func (module *module) UpdatePublicV2(ctx context.Context, orgID valuer.UUID, id valuer.UUID, updatable dashboardtypes.UpdatablePublicDashboard) (*dashboardtypes.DashboardV2, error) {
+	if _, err := module.licensing.GetActive(ctx, orgID); err != nil {
+		return nil, errors.New(errors.TypeLicenseUnavailable, errors.CodeLicenseUnavailable, "a valid license is not available").WithAdditional("this feature requires a valid license").WithAdditional(err.Error())
+	}
+
+	existing, err := module.pkgDashboardModule.GetV2(ctx, orgID, id)
+	if err != nil {
+		return nil, err
+	}
+	if existing.PublicConfig == nil {
+		return nil, errors.Newf(errors.TypeNotFound, dashboardtypes.ErrCodePublicDashboardNotFound, "dashboard with id %s isn't public", id)
+	}
+
+	existing.PublicConfig.Update(updatable.TimeRangeEnabled, updatable.DefaultTimeRange)
+	if err := module.store.UpdatePublic(ctx, dashboardtypes.NewStorablePublicDashboardFromPublicDashboard(existing.PublicConfig)); err != nil {
+		return nil, err
+	}
+	return existing, nil
+}
+
+func (module *module) ListV2(ctx context.Context, orgID valuer.UUID, userID valuer.UUID, params *dashboardtypes.ListDashboardsV2Params) (*dashboardtypes.ListableDashboardV2, error) {
+	return module.pkgDashboardModule.ListV2(ctx, orgID, userID, params)
+}
+
+func (module *module) PinV2(ctx context.Context, orgID valuer.UUID, userID valuer.UUID, id valuer.UUID) error {
+	return module.pkgDashboardModule.PinV2(ctx, orgID, userID, id)
+}
+
+func (module *module) UnpinV2(ctx context.Context, userID valuer.UUID, id valuer.UUID) error {
+	return module.pkgDashboardModule.UnpinV2(ctx, userID, id)
+}
+
 func (module *module) Get(ctx context.Context, orgID valuer.UUID, id valuer.UUID) (*dashboardtypes.Dashboard, error) {
 	return module.pkgDashboardModule.Get(ctx, orgID, id)
 }

ee/sqlstore/postgressqlstore/listfilter_test.go

@@ -0,0 +1,65 @@
+package postgressqlstore
+
+// Lives in this package (rather than the listfilter package) so it can use
+// the unexported newFormatter constructor without driving a real Postgres
+// connection. Covers the only listfilter cases whose emitted SQL differs
+// between SQLite and Postgres — the ones that go through JSONExtractString
+// (`name`, `description`). All other operators (=, !=, BETWEEN, LIKE, IN,
+// EXISTS, lower(...)) emit identical ANSI SQL on both dialects and are
+// covered by the SQLite tests in the listfilter package itself.
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"github.com/uptrace/bun/dialect/pgdialect"
+
+	"github.com/SigNoz/signoz/pkg/types/dashboardtypes/listfilter"
+)
+
+func TestListFilterCompile_Postgres(t *testing.T) {
+	f := newFormatter(pgdialect.New())
+
+	cases := []struct {
+		name     string
+		query    string
+		wantSQL  string
+		wantArgs []any
+	}{
+		{
+			name:     "name = uses Postgres -> / ->> chain",
+			query:    `name = 'overview'`,
+			wantSQL:  `"dashboard"."data"->'data'->'display'->>'name' = ?`,
+			wantArgs: []any{"overview"},
+		},
+		{
+			name:     "name CONTAINS — same JSON path, LIKE pattern",
+			query:    `name CONTAINS 'overview'`,
+			wantSQL:  `"dashboard"."data"->'data'->'display'->>'name' LIKE ?`,
+			wantArgs: []any{"%overview%"},
+		},
+		{
+			name:     "name ILIKE — LOWER wraps the JSON path",
+			query:    `name ILIKE 'Prod%'`,
+			wantSQL:  `lower("dashboard"."data"->'data'->'display'->>'name') LIKE LOWER(?)`,
+			wantArgs: []any{"Prod%"},
+		},
+		{
+			name:     "description = follows the same path shape",
+			query:    `description = 'd1'`,
+			wantSQL:  `"dashboard"."data"->'data'->'display'->>'description' = ?`,
+			wantArgs: []any{"d1"},
+		},
+	}
+
+	for _, c := range cases {
+		t.Run(c.name, func(t *testing.T) {
+			out, err := listfilter.Compile(c.query, f)
+			require.NoError(t, err)
+			require.NotNil(t, out)
+			assert.Equal(t, c.wantSQL, out.SQL)
+			assert.Equal(t, c.wantArgs, out.Args)
+		})
+	}
+}

go.mod

@@ -88,6 +88,7 @@ require (
 	gonum.org/v1/gonum v0.17.0
 	google.golang.org/api v0.265.0
 	google.golang.org/protobuf v1.36.11
+	gopkg.in/evanphx/json-patch.v4 v4.13.0
 	gopkg.in/yaml.v2 v2.4.0
 	gopkg.in/yaml.v3 v3.0.1
 	k8s.io/apimachinery v0.35.2

pkg/apiserver/signozapiserver/dashboard.go

@@ -14,6 +14,218 @@ import (
 )
 
 func (provider *provider) addDashboardRoutes(router *mux.Router) error {
+	if err := router.Handle("/api/v2/dashboards", handler.New(provider.authzMiddleware.ViewAccess(provider.dashboardHandler.ListV2), handler.OpenAPIDef{
+		ID:                  "ListDashboardsV2",
+		Tags:                []string{"dashboard"},
+		Summary:             "List dashboards (v2)",
+		Description:         "Returns a page of v2-shape dashboards for the calling user's org. Supports a filter DSL (`query`), sort (`updated_at`/`created_at`/`title`), order (`asc`/`desc`), and offset-based pagination (`limit`/`offset`). Pinned dashboards float to the top of each page.",
+		Request:             nil,
+		RequestContentType:  "",
+		Response:            new(dashboardtypes.ListableDashboardV2),
+		ResponseContentType: "application/json",
+		SuccessStatusCode:   http.StatusOK,
+		ErrorStatusCodes:    []int{},
+		Deprecated:          false,
+		SecuritySchemes:     newSecuritySchemes(types.RoleViewer),
+	})).Methods(http.MethodGet).GetError(); err != nil {
+		return err
+	}
+
+	if err := router.Handle("/api/v2/dashboards", handler.New(provider.authzMiddleware.EditAccess(provider.dashboardHandler.CreateV2), handler.OpenAPIDef{
+		ID:                  "CreateDashboardV2",
+		Tags:                []string{"dashboard"},
+		Summary:             "Create dashboard (v2)",
+		Description:         "This endpoint creates a v2-shape dashboard with structured metadata, a typed data tree, and resolved tags.",
+		Request:             new(dashboardtypes.PostableDashboardV2),
+		RequestContentType:  "application/json",
+		Response:            new(dashboardtypes.GettableDashboardV2),
+		ResponseContentType: "application/json",
+		SuccessStatusCode:   http.StatusCreated,
+		ErrorStatusCodes:    []int{},
+		Deprecated:          false,
+		SecuritySchemes:     newSecuritySchemes(types.RoleEditor),
+	})).Methods(http.MethodPost).GetError(); err != nil {
+		return err
+	}
+
+	if err := router.Handle("/api/v2/dashboards/{id}", handler.New(provider.authzMiddleware.ViewAccess(provider.dashboardHandler.GetV2), handler.OpenAPIDef{
+		ID:                  "GetDashboardV2",
+		Tags:                []string{"dashboard"},
+		Summary:             "Get dashboard (v2)",
+		Description:         "This endpoint returns a v2-shape dashboard with its tags and public sharing config (if any).",
+		Request:             nil,
+		RequestContentType:  "",
+		Response:            new(dashboardtypes.GettableDashboardV2),
+		ResponseContentType: "application/json",
+		SuccessStatusCode:   http.StatusOK,
+		ErrorStatusCodes:    []int{},
+		Deprecated:          false,
+		SecuritySchemes:     newSecuritySchemes(types.RoleViewer),
+	})).Methods(http.MethodGet).GetError(); err != nil {
+		return err
+	}
+
+	if err := router.Handle("/api/v2/dashboards/{id}", handler.New(provider.authzMiddleware.EditAccess(provider.dashboardHandler.UpdateV2), handler.OpenAPIDef{
+		ID:                  "UpdateDashboardV2",
+		Tags:                []string{"dashboard"},
+		Summary:             "Update dashboard (v2)",
+		Description:         "This endpoint updates a v2-shape dashboard's metadata, data, and tag set. Locked dashboards are rejected.",
+		Request:             new(dashboardtypes.UpdateableDashboardV2),
+		RequestContentType:  "application/json",
+		Response:            new(dashboardtypes.GettableDashboardV2),
+		ResponseContentType: "application/json",
+		SuccessStatusCode:   http.StatusOK,
+		ErrorStatusCodes:    []int{},
+		Deprecated:          false,
+		SecuritySchemes:     newSecuritySchemes(types.RoleEditor),
+	})).Methods(http.MethodPut).GetError(); err != nil {
+		return err
+	}
+
+	if err := router.Handle("/api/v2/dashboards/{id}", handler.New(provider.authzMiddleware.EditAccess(provider.dashboardHandler.PatchV2), handler.OpenAPIDef{
+		ID:          "PatchDashboardV2",
+		Tags:        []string{"dashboard"},
+		Summary:     "Patch dashboard (v2)",
+		Description: "This endpoint applies an RFC 6902 JSON Patch to a v2-shape dashboard. The patch is applied against the postable view of the dashboard (metadata, data, tags), so individual panels, queries, variables, layouts, or tags can be updated without re-sending the rest of the dashboard. Locked dashboards are rejected.",
+		Request:     new(dashboardtypes.JSONPatchDocument),
+		// Strictly per RFC 6902 the content type is `application/json-patch+json`,
+		// but our OpenAPI generator only reflects schemas for content types it
+		// understands (application/json, form-urlencoded, multipart) — anything
+		// else degrades to `type: string`. Declaring application/json here keeps
+		// the array-of-ops schema visible to spec consumers; the runtime decoder
+		// parses JSON regardless of the request's actual Content-Type header.
+		RequestContentType:  "application/json",
+		Response:            new(dashboardtypes.GettableDashboardV2),
+		ResponseContentType: "application/json",
+		SuccessStatusCode:   http.StatusOK,
+		ErrorStatusCodes:    []int{},
+		Deprecated:          false,
+		SecuritySchemes:     newSecuritySchemes(types.RoleEditor),
+	})).Methods(http.MethodPatch).GetError(); err != nil {
+		return err
+	}
+
+	if err := router.Handle("/api/v2/dashboards/{id}", handler.New(provider.authzMiddleware.EditAccess(provider.dashboardHandler.DeleteV2), handler.OpenAPIDef{
+		ID:                  "DeleteDashboardV2",
+		Tags:                []string{"dashboard"},
+		Summary:             "Delete dashboard (v2)",
+		Description:         "This endpoint deletes a v2-shape dashboard along with its tag relations. Locked dashboards are rejected.",
+		Request:             nil,
+		RequestContentType:  "",
+		Response:            nil,
+		ResponseContentType: "application/json",
+		SuccessStatusCode:   http.StatusNoContent,
+		ErrorStatusCodes:    []int{},
+		Deprecated:          false,
+		SecuritySchemes:     newSecuritySchemes(types.RoleEditor),
+	})).Methods(http.MethodDelete).GetError(); err != nil {
+		return err
+	}
+
+	if err := router.Handle("/api/v2/dashboards/{id}/lock", handler.New(provider.authzMiddleware.EditAccess(provider.dashboardHandler.LockV2), handler.OpenAPIDef{
+		ID:                  "LockDashboardV2",
+		Tags:                []string{"dashboard"},
+		Summary:             "Lock dashboard (v2)",
+		Description:         "This endpoint locks a v2-shape dashboard. Only the dashboard's creator or an org admin may lock or unlock.",
+		Request:             nil,
+		RequestContentType:  "",
+		Response:            nil,
+		ResponseContentType: "application/json",
+		SuccessStatusCode:   http.StatusNoContent,
+		ErrorStatusCodes:    []int{},
+		Deprecated:          false,
+		SecuritySchemes:     newSecuritySchemes(types.RoleEditor),
+	})).Methods(http.MethodPut).GetError(); err != nil {
+		return err
+	}
+
+	if err := router.Handle("/api/v2/dashboards/{id}/lock", handler.New(provider.authzMiddleware.EditAccess(provider.dashboardHandler.UnlockV2), handler.OpenAPIDef{
+		ID:                  "UnlockDashboardV2",
+		Tags:                []string{"dashboard"},
+		Summary:             "Unlock dashboard (v2)",
+		Description:         "This endpoint unlocks a v2-shape dashboard. Only the dashboard's creator or an org admin may lock or unlock.",
+		Request:             nil,
+		RequestContentType:  "",
+		Response:            nil,
+		ResponseContentType: "application/json",
+		SuccessStatusCode:   http.StatusNoContent,
+		ErrorStatusCodes:    []int{},
+		Deprecated:          false,
+		SecuritySchemes:     newSecuritySchemes(types.RoleEditor),
+	})).Methods(http.MethodDelete).GetError(); err != nil {
+		return err
+	}
+
+	// ViewAccess: pinning only mutates the calling user's pin list, not the
+	// dashboard itself — anyone who can view a dashboard can bookmark it.
+	if err := router.Handle("/api/v2/dashboards/{id}/pins/me", handler.New(provider.authzMiddleware.ViewAccess(provider.dashboardHandler.PinV2), handler.OpenAPIDef{
+		ID:                  "PinDashboardV2",
+		Tags:                []string{"dashboard"},
+		Summary:             "Pin a dashboard for the current user (v2)",
+		Description:         "Pins the dashboard for the calling user. A user can pin at most 10 dashboards; pinning when at the limit returns 409. Re-pinning an already-pinned dashboard is a no-op success.",
+		Request:             nil,
+		RequestContentType:  "",
+		Response:            nil,
+		ResponseContentType: "application/json",
+		SuccessStatusCode:   http.StatusNoContent,
+		ErrorStatusCodes:    []int{},
+		Deprecated:          false,
+		SecuritySchemes:     newSecuritySchemes(types.RoleViewer),
+	})).Methods(http.MethodPut).GetError(); err != nil {
+		return err
+	}
+
+	if err := router.Handle("/api/v2/dashboards/{id}/pins/me", handler.New(provider.authzMiddleware.ViewAccess(provider.dashboardHandler.UnpinV2), handler.OpenAPIDef{
+		ID:                  "UnpinDashboardV2",
+		Tags:                []string{"dashboard"},
+		Summary:             "Unpin a dashboard for the current user (v2)",
+		Description:         "Removes the pin for the calling user. Idempotent — unpinning a dashboard that wasn't pinned still returns 204.",
+		Request:             nil,
+		RequestContentType:  "",
+		Response:            nil,
+		ResponseContentType: "application/json",
+		SuccessStatusCode:   http.StatusNoContent,
+		ErrorStatusCodes:    []int{},
+		Deprecated:          false,
+		SecuritySchemes:     newSecuritySchemes(types.RoleViewer),
+	})).Methods(http.MethodDelete).GetError(); err != nil {
+		return err
+	}
+
+	if err := router.Handle("/api/v2/dashboards/{id}/public", handler.New(provider.authzMiddleware.AdminAccess(provider.dashboardHandler.CreatePublicV2), handler.OpenAPIDef{
+		ID:                  "CreatePublicDashboardV2",
+		Tags:                []string{"dashboard"},
+		Summary:             "Make a dashboard v2 public",
+		Description:         "This endpoint creates the public sharing config for a v2 dashboard and returns the dashboard with the new public config attached. Lock state does not gate this endpoint.",
+		Request:             new(dashboardtypes.PostablePublicDashboard),
+		RequestContentType:  "application/json",
+		Response:            new(dashboardtypes.GettableDashboardV2),
+		ResponseContentType: "application/json",
+		SuccessStatusCode:   http.StatusOK,
+		ErrorStatusCodes:    []int{},
+		Deprecated:          false,
+		SecuritySchemes:     newSecuritySchemes(types.RoleAdmin),
+	})).Methods(http.MethodPatch).GetError(); err != nil {
+		return err
+	}
+
+	if err := router.Handle("/api/v2/dashboards/{id}/public", handler.New(provider.authzMiddleware.AdminAccess(provider.dashboardHandler.UpdatePublicV2), handler.OpenAPIDef{
+		ID:                  "UpdatePublicDashboardV2",
+		Tags:                []string{"dashboard"},
+		Summary:             "Update public sharing config for a dashboard v2",
+		Description:         "This endpoint updates the public sharing config (time range settings) of an already-public v2 dashboard. Lock state does not gate this endpoint.",
+		Request:             new(dashboardtypes.UpdatablePublicDashboard),
+		RequestContentType:  "application/json",
+		Response:            new(dashboardtypes.GettableDashboardV2),
+		ResponseContentType: "application/json",
+		SuccessStatusCode:   http.StatusOK,
+		ErrorStatusCodes:    []int{},
+		Deprecated:          false,
+		SecuritySchemes:     newSecuritySchemes(types.RoleAdmin),
+	})).Methods(http.MethodPut).GetError(); err != nil {
+		return err
+	}
+
 	if err := router.Handle("/api/v1/dashboards/{id}/public", handler.New(provider.authzMiddleware.AdminAccess(provider.dashboardHandler.CreatePublic), handler.OpenAPIDef{
 		ID:                  "CreatePublicDashboard",
 		Tags:                []string{"dashboard"},

pkg/modules/dashboard/dashboard.go

@@ -49,6 +49,32 @@ type Module interface {
 	GetByMetricNames(ctx context.Context, orgID valuer.UUID, metricNames []string) (map[string][]map[string]string, error)
 
 	statsreporter.StatsCollector
+
+	// ════════════════════════════════════════════════════════════════════════
+	// v2 dashboard methods
+	// ════════════════════════════════════════════════════════════════════════
+
+	CreateV2(ctx context.Context, orgID valuer.UUID, createdBy string, creator valuer.UUID, postable dashboardtypes.PostableDashboardV2) (*dashboardtypes.DashboardV2, error)
+
+	GetV2(ctx context.Context, orgID valuer.UUID, id valuer.UUID) (*dashboardtypes.DashboardV2, error)
+
+	ListV2(ctx context.Context, orgID valuer.UUID, userID valuer.UUID, params *dashboardtypes.ListDashboardsV2Params) (*dashboardtypes.ListableDashboardV2, error)
+
+	UpdateV2(ctx context.Context, orgID valuer.UUID, id valuer.UUID, updatedBy string, updateable dashboardtypes.UpdateableDashboardV2) (*dashboardtypes.DashboardV2, error)
+
+	PatchV2(ctx context.Context, orgID valuer.UUID, id valuer.UUID, updatedBy string, patch dashboardtypes.PatchableDashboardV2) (*dashboardtypes.DashboardV2, error)
+
+	DeleteV2(ctx context.Context, orgID valuer.UUID, id valuer.UUID) error
+
+	LockUnlockV2(ctx context.Context, orgID valuer.UUID, id valuer.UUID, updatedBy string, isAdmin bool, lock bool) error
+
+	CreatePublicV2(ctx context.Context, orgID valuer.UUID, id valuer.UUID, postable dashboardtypes.PostablePublicDashboard) (*dashboardtypes.DashboardV2, error)
+
+	UpdatePublicV2(ctx context.Context, orgID valuer.UUID, id valuer.UUID, updatable dashboardtypes.UpdatablePublicDashboard) (*dashboardtypes.DashboardV2, error)
+
+	PinV2(ctx context.Context, orgID valuer.UUID, userID valuer.UUID, id valuer.UUID) error
+
+	UnpinV2(ctx context.Context, userID valuer.UUID, id valuer.UUID) error
 }
 
 type Handler interface {
@@ -71,4 +97,31 @@ type Handler interface {
 	LockUnlock(http.ResponseWriter, *http.Request)
 
 	Delete(http.ResponseWriter, *http.Request)
+
+	// ════════════════════════════════════════════════════════════════════════
+	// v2 dashboard methods
+	// ════════════════════════════════════════════════════════════════════════
+	CreateV2(http.ResponseWriter, *http.Request)
+
+	GetV2(http.ResponseWriter, *http.Request)
+
+	ListV2(http.ResponseWriter, *http.Request)
+
+	UpdateV2(http.ResponseWriter, *http.Request)
+
+	PatchV2(http.ResponseWriter, *http.Request)
+
+	DeleteV2(http.ResponseWriter, *http.Request)
+
+	LockV2(http.ResponseWriter, *http.Request)
+
+	UnlockV2(http.ResponseWriter, *http.Request)
+
+	CreatePublicV2(http.ResponseWriter, *http.Request)
+
+	UpdatePublicV2(http.ResponseWriter, *http.Request)
+
+	PinV2(http.ResponseWriter, *http.Request)
+
+	UnpinV2(http.ResponseWriter, *http.Request)
 }

pkg/modules/dashboard/impldashboard/module.go

@@ -10,7 +10,9 @@ import (
 	"github.com/SigNoz/signoz/pkg/factory"
 	"github.com/SigNoz/signoz/pkg/modules/dashboard"
 	"github.com/SigNoz/signoz/pkg/modules/organization"
+	"github.com/SigNoz/signoz/pkg/modules/tag"
 	"github.com/SigNoz/signoz/pkg/queryparser"
+	"github.com/SigNoz/signoz/pkg/sqlstore"
 	"github.com/SigNoz/signoz/pkg/types"
 	"github.com/SigNoz/signoz/pkg/types/coretypes"
 	"github.com/SigNoz/signoz/pkg/types/dashboardtypes"
@@ -20,20 +22,24 @@ import (
 
 type module struct {
 	store       dashboardtypes.Store
+	sqlstore    sqlstore.SQLStore
 	settings    factory.ScopedProviderSettings
 	analytics   analytics.Analytics
 	orgGetter   organization.Getter
 	queryParser queryparser.QueryParser
+	tagModule   tag.Module
 }
 
-func NewModule(store dashboardtypes.Store, settings factory.ProviderSettings, analytics analytics.Analytics, orgGetter organization.Getter, queryParser queryparser.QueryParser) dashboard.Module {
+func NewModule(store dashboardtypes.Store, sqlstore sqlstore.SQLStore, settings factory.ProviderSettings, analytics analytics.Analytics, orgGetter organization.Getter, queryParser queryparser.QueryParser, tagModule tag.Module) dashboard.Module {
 	scopedProviderSettings := factory.NewScopedProviderSettings(settings, "github.com/SigNoz/signoz/pkg/modules/dashboard/impldashboard")
 	return &module{
 		store:       store,
+		sqlstore:    sqlstore,
 		settings:    scopedProviderSettings,
 		analytics:   analytics,
 		orgGetter:   orgGetter,
 		queryParser: queryParser,
+		tagModule:   tagModule,
 	}
 }
 

pkg/modules/dashboard/impldashboard/store.go

@@ -2,10 +2,14 @@ package impldashboard
 
 import (
 	"context"
+	"strings"
+	"time"
 
 	"github.com/SigNoz/signoz/pkg/errors"
 	"github.com/SigNoz/signoz/pkg/sqlstore"
+	"github.com/SigNoz/signoz/pkg/types"
 	"github.com/SigNoz/signoz/pkg/types/dashboardtypes"
+	"github.com/SigNoz/signoz/pkg/types/dashboardtypes/listfilter"
 	"github.com/SigNoz/signoz/pkg/valuer"
 	"github.com/uptrace/bun"
 )
@@ -63,6 +67,201 @@ func (store *store) Get(ctx context.Context, orgID valuer.UUID, id valuer.UUID)
 	return storableDashboard, nil
 }
 
+func (store *store) GetV2(ctx context.Context, orgID valuer.UUID, id valuer.UUID) (*dashboardtypes.StorableDashboard, *dashboardtypes.StorablePublicDashboard, error) {
+	type joinedRow struct {
+		*dashboardtypes.StorableDashboard `bun:",extend"`
+
+		PublicID               *valuer.UUID `bun:"public_id"`
+		PublicCreatedAt        *time.Time   `bun:"public_created_at"`
+		PublicUpdatedAt        *time.Time   `bun:"public_updated_at"`
+		PublicTimeRangeEnabled *bool        `bun:"public_time_range_enabled"`
+		PublicDefaultTimeRange *string      `bun:"public_default_time_range"`
+	}
+
+	row := &joinedRow{StorableDashboard: new(dashboardtypes.StorableDashboard)}
+	err := store.
+		sqlstore.
+		BunDB().
+		NewSelect().
+		Model(row).
+		ColumnExpr("dashboard.id, dashboard.org_id, dashboard.data, dashboard.locked, dashboard.created_at, dashboard.created_by, dashboard.updated_at, dashboard.updated_by").
+		ColumnExpr("pd.id AS public_id, pd.created_at AS public_created_at, pd.updated_at AS public_updated_at, pd.time_range_enabled AS public_time_range_enabled, pd.default_time_range AS public_default_time_range").
+		Join("LEFT JOIN public_dashboard AS pd ON pd.dashboard_id = dashboard.id").
+		Where("dashboard.id = ?", id).
+		Where("dashboard.org_id = ?", orgID).
+		Scan(ctx)
+	if err != nil {
+		return nil, nil, store.sqlstore.WrapNotFoundErrf(err, dashboardtypes.ErrCodeDashboardNotFound, "dashboard with id %s doesn't exist", id)
+	}
+
+	if row.PublicID == nil {
+		return row.StorableDashboard, nil, nil
+	}
+	public := &dashboardtypes.StorablePublicDashboard{
+		Identifiable:     types.Identifiable{ID: *row.PublicID},
+		TimeAuditable:    types.TimeAuditable{CreatedAt: *row.PublicCreatedAt, UpdatedAt: *row.PublicUpdatedAt},
+		TimeRangeEnabled: *row.PublicTimeRangeEnabled,
+		DefaultTimeRange: *row.PublicDefaultTimeRange,
+		DashboardID:      row.ID.StringValue(),
+	}
+	return row.StorableDashboard, public, nil
+}
+
+// ListV2 emits the joined dashboard ⨝ pinned_dashboard ⨝ public_dashboard
+// query the spec calls for. Aliases:
+//
+//	dashboard         — the visitor expects this
+//	pinned_dashboard  AS pin  — only used inside this query
+//	public_dashboard  AS pd   — the visitor expects this
+//
+// Sort is "is_pinned DESC, <sort> <order>" so pinned dashboards float to the
+// top inside the requested ordering. Title-sort goes through the same
+// JSONExtractString path the visitor uses for name/description filtering.
+func (store *store) ListV2(
+	ctx context.Context,
+	orgID valuer.UUID,
+	userID valuer.UUID,
+	params *dashboardtypes.ListDashboardsV2Params,
+) ([]*dashboardtypes.DashboardListRow, bool, error) {
+	compiled, err := listfilter.Compile(params.Query, store.sqlstore.Formatter())
+	if err != nil {
+		return nil, false, err
+	}
+	type listedRow struct {
+		*dashboardtypes.StorableDashboard `bun:",extend"`
+
+		IsPinned bool `bun:"is_pinned"`
+
+		PublicID               *valuer.UUID `bun:"public_id"`
+		PublicCreatedAt        *time.Time   `bun:"public_created_at"`
+		PublicUpdatedAt        *time.Time   `bun:"public_updated_at"`
+		PublicTimeRangeEnabled *bool        `bun:"public_time_range_enabled"`
+		PublicDefaultTimeRange *string      `bun:"public_default_time_range"`
+	}
+
+	rows := make([]*listedRow, 0)
+
+	q := store.sqlstore.
+		BunDB().
+		NewSelect().
+		Model(&rows).
+		ColumnExpr("dashboard.id, dashboard.org_id, dashboard.data, dashboard.locked, dashboard.created_at, dashboard.created_by, dashboard.updated_at, dashboard.updated_by").
+		ColumnExpr("CASE WHEN pin.user_id IS NOT NULL THEN 1 ELSE 0 END AS is_pinned").
+		ColumnExpr("pd.id AS public_id, pd.created_at AS public_created_at, pd.updated_at AS public_updated_at, pd.time_range_enabled AS public_time_range_enabled, pd.default_time_range AS public_default_time_range").
+		Join("LEFT JOIN pinned_dashboard AS pin ON pin.user_id = ? AND pin.dashboard_id = dashboard.id", userID).
+		Join("LEFT JOIN public_dashboard AS pd ON pd.dashboard_id = dashboard.id").
+		Where("dashboard.org_id = ?", orgID)
+
+	if compiled != nil {
+		q = q.Where(compiled.SQL, compiled.Args...)
+	}
+
+	sortExpr, err := store.sortExprForListV2(params.Sort)
+	if err != nil {
+		return nil, false, err
+	}
+	q = q.
+		OrderExpr("is_pinned DESC").
+		OrderExpr(sortExpr + " " + strings.ToUpper(string(params.Order))).
+		Limit(params.Limit + 1).
+		Offset(params.Offset)
+
+	if err := q.Scan(ctx); err != nil {
+		return nil, false, err
+	}
+
+	hasMore := len(rows) > params.Limit
+	if hasMore {
+		rows = rows[:params.Limit]
+	}
+
+	out := make([]*dashboardtypes.DashboardListRow, len(rows))
+	for i, r := range rows {
+		row := &dashboardtypes.DashboardListRow{
+			Dashboard: r.StorableDashboard,
+			Pinned:    r.IsPinned,
+		}
+		if r.PublicID != nil {
+			row.Public = &dashboardtypes.StorablePublicDashboard{
+				Identifiable:     types.Identifiable{ID: *r.PublicID},
+				TimeAuditable:    types.TimeAuditable{CreatedAt: *r.PublicCreatedAt, UpdatedAt: *r.PublicUpdatedAt},
+				TimeRangeEnabled: *r.PublicTimeRangeEnabled,
+				DefaultTimeRange: *r.PublicDefaultTimeRange,
+				DashboardID:      r.ID.StringValue(),
+			}
+		}
+		out[i] = row
+	}
+	return out, hasMore, nil
+}
+
+// sortExprForListV2 maps a sort enum to the SQL expression to plug into
+// ORDER BY. Title-sort routes through the SQLFormatter so it stays
+// dialect-aware (matches what listfilter/visitor does for the name filter).
+func (store *store) sortExprForListV2(sort dashboardtypes.ListSort) (string, error) {
+	switch sort {
+	case dashboardtypes.ListSortUpdatedAt:
+		return "dashboard.updated_at", nil
+	case dashboardtypes.ListSortCreatedAt:
+		return "dashboard.created_at", nil
+	case dashboardtypes.ListSortName:
+		return string(store.sqlstore.Formatter().JSONExtractString("dashboard.data", "$.data.display.name")), nil
+	}
+	return "", errors.Newf(errors.TypeInvalidInput, dashboardtypes.ErrCodeDashboardListInvalid,
+		"unsupported sort field %q", sort)
+}
+
+func (store *store) UpdateV2(ctx context.Context, orgID valuer.UUID, id valuer.UUID, updatedBy string, data dashboardtypes.StorableDashboardData) error {
+	res, err := store.
+		sqlstore.
+		BunDBCtx(ctx).
+		NewUpdate().
+		Model((*dashboardtypes.StorableDashboard)(nil)).
+		Set("data = ?", data).
+		Set("updated_by = ?", updatedBy).
+		Set("updated_at = ?", time.Now()).
+		Where("id = ?", id).
+		Where("org_id = ?", orgID).
+		Exec(ctx)
+	if err != nil {
+		return err
+	}
+	rows, err := res.RowsAffected()
+	if err != nil {
+		return err
+	}
+	// Defends against the race where a delete lands between the caller's
+	// pre-update GetV2 and this update.
+	if rows == 0 {
+		return errors.Newf(errors.TypeNotFound, dashboardtypes.ErrCodeDashboardNotFound, "dashboard with id %s doesn't exist", id)
+	}
+	return nil
+}
+
+func (store *store) LockUnlockV2(ctx context.Context, orgID valuer.UUID, id valuer.UUID, locked bool, updatedBy string) error {
+	res, err := store.
+		sqlstore.
+		BunDBCtx(ctx).
+		NewUpdate().
+		Model((*dashboardtypes.StorableDashboard)(nil)).
+		Set("locked = ?", locked).
+		Set("updated_by = ?", updatedBy).
+		Set("updated_at = ?", time.Now()).
+		Where("id = ?", id).
+		Exec(ctx)
+	if err != nil {
+		return err
+	}
+	rows, err := res.RowsAffected()
+	if err != nil {
+		return err
+	}
+	if rows == 0 {
+		return errors.Newf(errors.TypeNotFound, dashboardtypes.ErrCodeDashboardNotFound, "dashboard with id %s doesn't exist", id)
+	}
+	return nil
+}
+
 func (store *store) GetPublic(ctx context.Context, dashboardID string) (*dashboardtypes.StorablePublicDashboard, error) {
 	storable := new(dashboardtypes.StorablePublicDashboard)
 	err := store.
@@ -217,3 +416,51 @@ func (store *store) RunInTx(ctx context.Context, cb func(ctx context.Context) er
 		return cb(ctx)
 	})
 }
+
+// PinForUser combines the count check, the existence check, and the upsert in
+// a single statement so the limit gate and the insert can't drift between two
+// round-trips.
+//
+//	pin exists? | count < 10? | WHERE passes?           | effect                            | rows
+//	------------|-------------|-------------------------|-----------------------------------|-----
+//	no          | yes         | yes (count branch)      | INSERT new row                    | 1
+//	no          | no          | no                      | nothing (limit hit)               | 0
+//	yes         | yes         | yes (count branch)      | INSERT → conflict → no-op UPDATE  | 1
+//	yes         | no          | yes (EXISTS OR branch)  | INSERT → conflict → no-op UPDATE  | 1
+//
+// rows = 0 is the only signal of a real limit hit.
+func (store *store) PinForUser(ctx context.Context, pd *dashboardtypes.PinnedDashboard) error {
+	res, err := store.sqlstore.BunDBCtx(ctx).NewRaw(`
+		INSERT INTO pinned_dashboard (user_id, dashboard_id, org_id, pinned_at)
+		SELECT ?, ?, ?, ?
+		WHERE (SELECT COUNT(*) FROM pinned_dashboard WHERE user_id = ?) < ?
+		   OR EXISTS (SELECT 1 FROM pinned_dashboard WHERE user_id = ? AND dashboard_id = ?)
+		ON CONFLICT (user_id, dashboard_id) DO UPDATE SET user_id = EXCLUDED.user_id
+	`,
+		pd.UserID, pd.DashboardID, pd.OrgID, pd.PinnedAt,
+		pd.UserID, dashboardtypes.MaxPinnedDashboardsPerUser,
+		pd.UserID, pd.DashboardID,
+	).Exec(ctx)
+	if err != nil {
+		return err
+	}
+	rows, err := res.RowsAffected()
+	if err != nil {
+		return err
+	}
+	if rows == 0 {
+		return errors.Newf(errors.TypeAlreadyExists, dashboardtypes.ErrCodePinnedDashboardLimitHit,
+			"cannot pin more than %d dashboards", dashboardtypes.MaxPinnedDashboardsPerUser)
+	}
+	return nil
+}
+
+func (store *store) UnpinForUser(ctx context.Context, userID valuer.UUID, dashboardID valuer.UUID) error {
+	_, err := store.sqlstore.BunDBCtx(ctx).
+		NewDelete().
+		Model((*dashboardtypes.PinnedDashboard)(nil)).
+		Where("user_id = ?", userID).
+		Where("dashboard_id = ?", dashboardID).
+		Exec(ctx)
+	return err
+}

pkg/modules/dashboard/impldashboard/v2_handler.go

@@ -0,0 +1,442 @@
+package impldashboard
+
+import (
+	"context"
+	"encoding/json"
+	"net/http"
+	"time"
+
+	"github.com/SigNoz/signoz/pkg/errors"
+	"github.com/SigNoz/signoz/pkg/http/binding"
+	"github.com/SigNoz/signoz/pkg/http/render"
+	"github.com/SigNoz/signoz/pkg/types/authtypes"
+	"github.com/SigNoz/signoz/pkg/types/coretypes"
+	"github.com/SigNoz/signoz/pkg/types/dashboardtypes"
+	"github.com/SigNoz/signoz/pkg/valuer"
+	"github.com/gorilla/mux"
+)
+
+func (handler *handler) CreateV2(rw http.ResponseWriter, r *http.Request) {
+	ctx, cancel := context.WithTimeout(r.Context(), 10*time.Second)
+	defer cancel()
+
+	claims, err := authtypes.ClaimsFromContext(ctx)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	orgID, err := valuer.NewUUID(claims.OrgID)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	req := dashboardtypes.PostableDashboardV2{}
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	dashboard, err := handler.module.CreateV2(ctx, orgID, claims.Email, valuer.MustNewUUID(claims.IdentityID()), req)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	render.Success(rw, http.StatusCreated, dashboardtypes.NewGettableDashboardV2FromDashboardV2(dashboard))
+}
+
+func (handler *handler) ListV2(rw http.ResponseWriter, r *http.Request) {
+	ctx, cancel := context.WithTimeout(r.Context(), 10*time.Second)
+	defer cancel()
+
+	claims, err := authtypes.ClaimsFromContext(ctx)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	orgID, err := valuer.NewUUID(claims.OrgID)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	userID, err := valuer.NewUUID(claims.IdentityID())
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	params := new(dashboardtypes.ListDashboardsV2Params)
+	if err := binding.Query.BindQuery(r.URL.Query(), params); err != nil {
+		render.Error(rw, err)
+		return
+	}
+	if err := params.Validate(); err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	out, err := handler.module.ListV2(ctx, orgID, userID, params)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	render.Success(rw, http.StatusOK, out)
+}
+
+func (handler *handler) GetV2(rw http.ResponseWriter, r *http.Request) {
+	ctx, cancel := context.WithTimeout(r.Context(), 10*time.Second)
+	defer cancel()
+
+	claims, err := authtypes.ClaimsFromContext(ctx)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	orgID, err := valuer.NewUUID(claims.OrgID)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	id := mux.Vars(r)["id"]
+	if id == "" {
+		render.Error(rw, errors.Newf(errors.TypeInvalidInput, errors.CodeInvalidInput, "id is missing in the path"))
+		return
+	}
+	dashboardID, err := valuer.NewUUID(id)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	dashboard, err := handler.module.GetV2(ctx, orgID, dashboardID)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	render.Success(rw, http.StatusOK, dashboardtypes.NewGettableDashboardV2FromDashboardV2(dashboard))
+}
+
+func (handler *handler) LockV2(rw http.ResponseWriter, r *http.Request) {
+	handler.lockUnlockV2(rw, r, true)
+}
+
+func (handler *handler) UnlockV2(rw http.ResponseWriter, r *http.Request) {
+	handler.lockUnlockV2(rw, r, false)
+}
+
+func (handler *handler) lockUnlockV2(rw http.ResponseWriter, r *http.Request, lock bool) {
+	ctx, cancel := context.WithTimeout(r.Context(), 10*time.Second)
+	defer cancel()
+
+	claims, err := authtypes.ClaimsFromContext(ctx)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	orgID, err := valuer.NewUUID(claims.OrgID)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	id := mux.Vars(r)["id"]
+	if id == "" {
+		render.Error(rw, errors.Newf(errors.TypeInvalidInput, errors.CodeInvalidInput, "id is missing in the path"))
+		return
+	}
+	dashboardID, err := valuer.NewUUID(id)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	isAdmin := false
+	selectors := []coretypes.Selector{
+		coretypes.TypeRole.MustSelector(authtypes.SigNozAdminRoleName),
+	}
+	err = handler.authz.CheckWithTupleCreation(
+		ctx,
+		claims,
+		valuer.MustNewUUID(claims.OrgID),
+		authtypes.Relation{Verb: coretypes.VerbAssignee},
+		coretypes.NewResourceRole(),
+		selectors,
+		selectors,
+	)
+	if err == nil {
+		isAdmin = true
+	}
+
+	if err := handler.module.LockUnlockV2(ctx, orgID, dashboardID, claims.Email, isAdmin, lock); err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	render.Success(rw, http.StatusNoContent, nil)
+}
+
+func (handler *handler) UpdateV2(rw http.ResponseWriter, r *http.Request) {
+	ctx, cancel := context.WithTimeout(r.Context(), 10*time.Second)
+	defer cancel()
+
+	claims, err := authtypes.ClaimsFromContext(ctx)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	orgID, err := valuer.NewUUID(claims.OrgID)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	id := mux.Vars(r)["id"]
+	if id == "" {
+		render.Error(rw, errors.Newf(errors.TypeInvalidInput, errors.CodeInvalidInput, "id is missing in the path"))
+		return
+	}
+	dashboardID, err := valuer.NewUUID(id)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	req := dashboardtypes.UpdateableDashboardV2{}
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	dashboard, err := handler.module.UpdateV2(ctx, orgID, dashboardID, claims.Email, req)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	render.Success(rw, http.StatusOK, dashboardtypes.NewGettableDashboardV2FromDashboardV2(dashboard))
+}
+
+func (handler *handler) PatchV2(rw http.ResponseWriter, r *http.Request) {
+	ctx, cancel := context.WithTimeout(r.Context(), 10*time.Second)
+	defer cancel()
+
+	claims, err := authtypes.ClaimsFromContext(ctx)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	orgID, err := valuer.NewUUID(claims.OrgID)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	id := mux.Vars(r)["id"]
+	if id == "" {
+		render.Error(rw, errors.Newf(errors.TypeInvalidInput, errors.CodeInvalidInput, "id is missing in the path"))
+		return
+	}
+	dashboardID, err := valuer.NewUUID(id)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	req := dashboardtypes.PatchableDashboardV2{}
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	dashboard, err := handler.module.PatchV2(ctx, orgID, dashboardID, claims.Email, req)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	render.Success(rw, http.StatusOK, dashboardtypes.NewGettableDashboardV2FromDashboardV2(dashboard))
+}
+
+func (handler *handler) DeleteV2(rw http.ResponseWriter, r *http.Request) {
+	ctx, cancel := context.WithTimeout(r.Context(), 10*time.Second)
+	defer cancel()
+
+	claims, err := authtypes.ClaimsFromContext(ctx)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	orgID, err := valuer.NewUUID(claims.OrgID)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	id := mux.Vars(r)["id"]
+	if id == "" {
+		render.Error(rw, errors.Newf(errors.TypeInvalidInput, errors.CodeInvalidInput, "id is missing in the path"))
+		return
+	}
+	dashboardID, err := valuer.NewUUID(id)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	if err := handler.module.DeleteV2(ctx, orgID, dashboardID); err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	render.Success(rw, http.StatusNoContent, nil)
+}
+
+func (handler *handler) CreatePublicV2(rw http.ResponseWriter, r *http.Request) {
+	ctx, cancel := context.WithTimeout(r.Context(), 10*time.Second)
+	defer cancel()
+
+	claims, err := authtypes.ClaimsFromContext(ctx)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	orgID, err := valuer.NewUUID(claims.OrgID)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	id := mux.Vars(r)["id"]
+	if id == "" {
+		render.Error(rw, errors.Newf(errors.TypeInvalidInput, errors.CodeInvalidInput, "id is missing in the path"))
+		return
+	}
+	dashboardID, err := valuer.NewUUID(id)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	req := dashboardtypes.PostablePublicDashboard{}
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	dashboard, err := handler.module.CreatePublicV2(ctx, orgID, dashboardID, req)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	render.Success(rw, http.StatusOK, dashboardtypes.NewGettableDashboardV2FromDashboardV2(dashboard))
+}
+
+func (handler *handler) PinV2(rw http.ResponseWriter, r *http.Request) {
+	handler.pinUnpinV2(rw, r, true)
+}
+
+func (handler *handler) UnpinV2(rw http.ResponseWriter, r *http.Request) {
+	handler.pinUnpinV2(rw, r, false)
+}
+
+func (handler *handler) pinUnpinV2(rw http.ResponseWriter, r *http.Request, pin bool) {
+	ctx, cancel := context.WithTimeout(r.Context(), 10*time.Second)
+	defer cancel()
+
+	claims, err := authtypes.ClaimsFromContext(ctx)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	orgID, err := valuer.NewUUID(claims.OrgID)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	userID, err := valuer.NewUUID(claims.IdentityID())
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	id := mux.Vars(r)["id"]
+	if id == "" {
+		render.Error(rw, errors.Newf(errors.TypeInvalidInput, errors.CodeInvalidInput, "id is missing in the path"))
+		return
+	}
+	dashboardID, err := valuer.NewUUID(id)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	if pin {
+		err = handler.module.PinV2(ctx, orgID, userID, dashboardID)
+	} else {
+		err = handler.module.UnpinV2(ctx, userID, dashboardID)
+	}
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	render.Success(rw, http.StatusNoContent, nil)
+}
+
+func (handler *handler) UpdatePublicV2(rw http.ResponseWriter, r *http.Request) {
+	ctx, cancel := context.WithTimeout(r.Context(), 10*time.Second)
+	defer cancel()
+
+	claims, err := authtypes.ClaimsFromContext(ctx)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	orgID, err := valuer.NewUUID(claims.OrgID)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	id := mux.Vars(r)["id"]
+	if id == "" {
+		render.Error(rw, errors.Newf(errors.TypeInvalidInput, errors.CodeInvalidInput, "id is missing in the path"))
+		return
+	}
+	dashboardID, err := valuer.NewUUID(id)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	req := dashboardtypes.UpdatablePublicDashboard{}
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	dashboard, err := handler.module.UpdatePublicV2(ctx, orgID, dashboardID, req)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	render.Success(rw, http.StatusOK, dashboardtypes.NewGettableDashboardV2FromDashboardV2(dashboard))
+}

pkg/modules/dashboard/impldashboard/v2_module.go

@@ -0,0 +1,210 @@
+package impldashboard
+
+import (
+	"context"
+	"time"
+
+	"github.com/SigNoz/signoz/pkg/errors"
+	"github.com/SigNoz/signoz/pkg/types/coretypes"
+	"github.com/SigNoz/signoz/pkg/types/dashboardtypes"
+	"github.com/SigNoz/signoz/pkg/valuer"
+)
+
+func (module *module) CreateV2(ctx context.Context, orgID valuer.UUID, createdBy string, creator valuer.UUID, postable dashboardtypes.PostableDashboardV2) (*dashboardtypes.DashboardV2, error) {
+	if err := postable.Validate(); err != nil {
+		return nil, err
+	}
+
+	dashboard := dashboardtypes.NewDashboardV2(orgID, createdBy, postable, nil)
+	var storableDashboard *dashboardtypes.StorableDashboard
+
+	err := module.sqlstore.RunInTxCtx(ctx, nil, func(ctx context.Context) error {
+		resolvedTags, err := module.tagModule.SyncTags(ctx, orgID, coretypes.KindDashboard, dashboard.ID, postable.Tags)
+		if err != nil {
+			return err
+		}
+		dashboard.Info.Tags = resolvedTags
+
+		storable, err := dashboard.ToStorableDashboard()
+		if err != nil {
+			return err
+		}
+		storableDashboard = storable
+		return module.store.Create(ctx, storable)
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	module.analytics.TrackUser(ctx, orgID.String(), creator.String(), "Dashboard Created", dashboardtypes.NewStatsFromStorableDashboards([]*dashboardtypes.StorableDashboard{storableDashboard}))
+	return dashboard, nil
+}
+
+// ListV2 calls the store for the joined page (the store owns DSL compilation
+// and limit+1/hasMore detection), batch-fetches tags for the returned
+// dashboard ids, and hands off to the type-side constructor for assembly.
+func (module *module) ListV2(ctx context.Context, orgID valuer.UUID, userID valuer.UUID, params *dashboardtypes.ListDashboardsV2Params) (*dashboardtypes.ListableDashboardV2, error) {
+	rows, hasMore, err := module.store.ListV2(ctx, orgID, userID, params)
+	if err != nil {
+		return nil, err
+	}
+
+	dashboardIDs := make([]valuer.UUID, len(rows))
+	for i, r := range rows {
+		dashboardIDs[i] = r.Dashboard.ID
+	}
+	tagsByDashboard, err := module.tagModule.ListForResources(ctx, orgID, coretypes.KindDashboard, dashboardIDs)
+	if err != nil {
+		return nil, err
+	}
+
+	return dashboardtypes.NewListableDashboardV2(rows, tagsByDashboard, hasMore)
+}
+
+func (module *module) GetV2(ctx context.Context, orgID valuer.UUID, id valuer.UUID) (*dashboardtypes.DashboardV2, error) {
+	storable, public, err := module.store.GetV2(ctx, orgID, id)
+	if err != nil {
+		return nil, err
+	}
+
+	tags, err := module.tagModule.ListForResource(ctx, orgID, coretypes.KindDashboard, id)
+	if err != nil {
+		return nil, err
+	}
+
+	return dashboardtypes.NewDashboardV2FromStorable(storable, public, tags)
+}
+
+func (module *module) UpdateV2(ctx context.Context, orgID valuer.UUID, id valuer.UUID, updatedBy string, updateable dashboardtypes.UpdateableDashboardV2) (*dashboardtypes.DashboardV2, error) {
+	if err := updateable.Validate(); err != nil {
+		return nil, err
+	}
+
+	existing, err := module.GetV2(ctx, orgID, id)
+	if err != nil {
+		return nil, err
+	}
+	// Locked-dashboard / state gate — independent of tags, so run it before the tx.
+	if err := existing.CanUpdate(); err != nil {
+		return nil, err
+	}
+
+	err = module.sqlstore.RunInTxCtx(ctx, nil, func(ctx context.Context) error {
+		resolvedTags, err := module.tagModule.SyncTags(ctx, orgID, coretypes.KindDashboard, id, updateable.Tags)
+		if err != nil {
+			return err
+		}
+
+		err = existing.Update(updateable, updatedBy, resolvedTags)
+		if err != nil {
+			return err
+		}
+
+		storable, err := existing.ToStorableDashboard()
+		if err != nil {
+			return err
+		}
+
+		return module.store.UpdateV2(ctx, orgID, id, updatedBy, storable.Data)
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	return existing, nil
+}
+
+func (module *module) PatchV2(ctx context.Context, orgID valuer.UUID, id valuer.UUID, updatedBy string, patch dashboardtypes.PatchableDashboardV2) (*dashboardtypes.DashboardV2, error) {
+	existing, err := module.GetV2(ctx, orgID, id)
+	if err != nil {
+		return nil, err
+	}
+	// Locked-dashboard / state gate — independent of tags, so run it before the tx.
+	if err := existing.CanUpdate(); err != nil {
+		return nil, err
+	}
+
+	updateable, err := patch.Apply(existing)
+	if err != nil {
+		return nil, err
+	}
+
+	err = module.sqlstore.RunInTxCtx(ctx, nil, func(ctx context.Context) error {
+		resolvedTags, err := module.tagModule.SyncTags(ctx, orgID, coretypes.KindDashboard, id, updateable.Tags)
+		if err != nil {
+			return err
+		}
+
+		err = existing.Update(*updateable, updatedBy, resolvedTags)
+		if err != nil {
+			return err
+		}
+
+		storable, err := existing.ToStorableDashboard()
+		if err != nil {
+			return err
+		}
+
+		return module.store.UpdateV2(ctx, orgID, id, updatedBy, storable.Data)
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	return existing, nil
+}
+
+func (module *module) DeleteV2(ctx context.Context, orgID valuer.UUID, id valuer.UUID) error {
+	existing, err := module.GetV2(ctx, orgID, id)
+	if err != nil {
+		return err
+	}
+	if existing.Locked {
+		return errors.Newf(errors.TypeInvalidInput, errors.CodeInvalidInput, "cannot delete a locked dashboard, please unlock the dashboard to delete")
+	}
+
+	return module.sqlstore.RunInTxCtx(ctx, nil, func(ctx context.Context) error {
+		// Syncing to an empty tag set drops every tag link for the dashboard.
+		if _, err := module.tagModule.SyncTags(ctx, orgID, coretypes.KindDashboard, id, nil); err != nil {
+			return err
+		}
+		return module.store.Delete(ctx, orgID, id)
+	})
+}
+
+// CreatePublicV2 is not supported in the community build.
+func (module *module) CreatePublicV2(_ context.Context, _ valuer.UUID, _ valuer.UUID, _ dashboardtypes.PostablePublicDashboard) (*dashboardtypes.DashboardV2, error) {
+	return nil, errors.Newf(errors.TypeUnsupported, dashboardtypes.ErrCodePublicDashboardUnsupported, "not implemented")
+}
+
+// UpdatePublicV2 is not supported in the community build.
+func (module *module) UpdatePublicV2(_ context.Context, _ valuer.UUID, _ valuer.UUID, _ dashboardtypes.UpdatablePublicDashboard) (*dashboardtypes.DashboardV2, error) {
+	return nil, errors.Newf(errors.TypeUnsupported, dashboardtypes.ErrCodePublicDashboardUnsupported, "not implemented")
+}
+
+func (module *module) LockUnlockV2(ctx context.Context, orgID valuer.UUID, id valuer.UUID, updatedBy string, isAdmin bool, lock bool) error {
+	existing, err := module.GetV2(ctx, orgID, id)
+	if err != nil {
+		return err
+	}
+	if err := existing.LockUnlock(lock, isAdmin, updatedBy); err != nil {
+		return err
+	}
+	return module.store.LockUnlockV2(ctx, orgID, id, lock, updatedBy)
+}
+
+func (module *module) PinV2(ctx context.Context, orgID valuer.UUID, userID valuer.UUID, id valuer.UUID) error {
+	if _, err := module.GetV2(ctx, orgID, id); err != nil {
+		return err
+	}
+	return module.store.PinForUser(ctx, &dashboardtypes.PinnedDashboard{
+		UserID:      userID,
+		DashboardID: id,
+		OrgID:       orgID,
+		PinnedAt:    time.Now(),
+	})
+}
+
+func (module *module) UnpinV2(ctx context.Context, userID valuer.UUID, id valuer.UUID) error {
+	return module.store.UnpinForUser(ctx, userID, id)
+}

pkg/modules/tag/impltag/module.go

@@ -0,0 +1,76 @@
+package impltag
+
+import (
+	"context"
+
+	"github.com/SigNoz/signoz/pkg/modules/tag"
+	"github.com/SigNoz/signoz/pkg/types/coretypes"
+	"github.com/SigNoz/signoz/pkg/types/tagtypes"
+	"github.com/SigNoz/signoz/pkg/valuer"
+)
+
+type module struct {
+	store tagtypes.Store
+}
+
+func NewModule(store tagtypes.Store) tag.Module {
+	return &module{store: store}
+}
+
+func (m *module) SyncTags(ctx context.Context, orgID valuer.UUID, kind coretypes.Kind, resourceID valuer.UUID, postable []tagtypes.PostableTag) ([]*tagtypes.Tag, error) {
+	var tags []*tagtypes.Tag
+	err := m.store.RunInTx(ctx, func(ctx context.Context) error {
+		resolved, err := m.createMany(ctx, orgID, kind, postable)
+		if err != nil {
+			return err
+		}
+		tagIDs := make([]valuer.UUID, len(resolved))
+		for i, t := range resolved {
+			tagIDs[i] = t.ID
+		}
+		if err := m.syncLinksForResource(ctx, orgID, kind, resourceID, tagIDs); err != nil {
+			return err
+		}
+		tags = resolved
+		return nil
+	})
+	if err != nil {
+		return nil, err
+	}
+	return tags, nil
+}
+
+func (m *module) createMany(ctx context.Context, orgID valuer.UUID, kind coretypes.Kind, postable []tagtypes.PostableTag) ([]*tagtypes.Tag, error) {
+	if len(postable) == 0 {
+		return []*tagtypes.Tag{}, nil
+	}
+
+	toCreate, matched, err := m.resolve(ctx, orgID, kind, postable)
+	if err != nil {
+		return nil, err
+	}
+
+	created, err := m.store.CreateOrGet(ctx, toCreate)
+	if err != nil {
+		return nil, err
+	}
+
+	return append(matched, created...), nil
+}
+
+func (m *module) syncLinksForResource(ctx context.Context, orgID valuer.UUID, kind coretypes.Kind, resourceID valuer.UUID, tagIDs []valuer.UUID) error {
+	return m.store.RunInTx(ctx, func(ctx context.Context) error {
+		if err := m.store.CreateRelations(ctx, tagtypes.NewTagRelations(kind, resourceID, tagIDs)); err != nil {
+			return err
+		}
+		return m.store.DeleteRelationsExcept(ctx, orgID, kind, resourceID, tagIDs)
+	})
+}
+
+func (m *module) ListForResource(ctx context.Context, orgID valuer.UUID, kind coretypes.Kind, resourceID valuer.UUID) ([]*tagtypes.Tag, error) {
+	return m.store.ListByResource(ctx, orgID, kind, resourceID)
+}
+
+func (m *module) ListForResources(ctx context.Context, orgID valuer.UUID, kind coretypes.Kind, resourceIDs []valuer.UUID) (map[valuer.UUID][]*tagtypes.Tag, error) {
+	return m.store.ListByResources(ctx, orgID, kind, resourceIDs)
+}

pkg/modules/tag/impltag/resolve.go

@@ -0,0 +1,59 @@
+package impltag
+
+import (
+	"context"
+	"strings"
+
+	"github.com/SigNoz/signoz/pkg/types/coretypes"
+	"github.com/SigNoz/signoz/pkg/types/tagtypes"
+	"github.com/SigNoz/signoz/pkg/valuer"
+)
+
+// resolve canonicalizes a batch of user-supplied (key, value) tag pairs against
+// the existing tags for an org. Lookup is case-insensitive on both key and
+// value (matching the storage uniqueness rule); when an existing row matches,
+// its display casing is reused. Inputs are deduped on (LOWER(key), LOWER(value));
+// the first input's casing wins on collisions. Returns:
+//   - toCreate: new Tag rows the caller should insert (with pre-generated IDs)
+//   - matched: existing rows the caller's input already pointed to. They
+//     already carry authoritative IDs from the store.
+func (m *module) resolve(ctx context.Context, orgID valuer.UUID, kind coretypes.Kind, postable []tagtypes.PostableTag) ([]*tagtypes.Tag, []*tagtypes.Tag, error) {
+	if len(postable) == 0 {
+		return nil, nil, nil
+	}
+
+	existing, err := m.store.List(ctx, orgID, kind)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	lowercaseTagsMap := make(map[string]*tagtypes.Tag, len(existing))
+	for _, t := range existing {
+		mapKey := strings.ToLower(t.Key) + "\x00" + strings.ToLower(t.Value)
+		lowercaseTagsMap[mapKey] = t
+	}
+
+	seenInRequestAlready := make(map[string]struct{}, len(postable)) // postable can have the same tag multiple times
+	toCreate := make([]*tagtypes.Tag, 0)
+	matched := make([]*tagtypes.Tag, 0)
+
+	for _, p := range postable {
+		key, value, err := tagtypes.ValidatePostableTag(p)
+		if err != nil {
+			return nil, nil, err
+		}
+		lookup := strings.ToLower(key) + "\x00" + strings.ToLower(value)
+		if _, dup := seenInRequestAlready[lookup]; dup {
+			continue
+		}
+		seenInRequestAlready[lookup] = struct{}{}
+
+		if existingTag, ok := lowercaseTagsMap[lookup]; ok {
+			matched = append(matched, existingTag)
+			continue
+		}
+		toCreate = append(toCreate, tagtypes.NewTag(orgID, kind, key, value))
+	}
+
+	return toCreate, matched, nil
+}

pkg/modules/tag/impltag/resolve_test.go

@@ -0,0 +1,112 @@
+package impltag
+
+import (
+	"context"
+	"strings"
+	"testing"
+
+	"github.com/SigNoz/signoz/pkg/types/coretypes"
+	"github.com/SigNoz/signoz/pkg/types/tagtypes"
+	"github.com/SigNoz/signoz/pkg/types/tagtypes/tagtypestest"
+	"github.com/SigNoz/signoz/pkg/valuer"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+var testKind = coretypes.KindDashboard
+
+func TestModule_Resolve(t *testing.T) {
+	t.Run("empty input does not hit store", func(t *testing.T) {
+		store := tagtypestest.NewStore()
+		m := &module{store: store}
+
+		toCreate, matched, err := m.resolve(context.Background(), valuer.GenerateUUID(), testKind, nil)
+		require.NoError(t, err)
+		assert.Empty(t, toCreate)
+		assert.Empty(t, matched)
+		assert.Zero(t, store.ListCallCount, "should not hit store when input is empty")
+	})
+
+	t.Run("creates missing pairs and reuses existing", func(t *testing.T) {
+		orgID := valuer.GenerateUUID()
+		dbTag := tagtypes.NewTag(orgID, testKind, "team", "Pulse")
+		dbTag2 := tagtypes.NewTag(orgID, testKind, "Database", "redis")
+		store := tagtypestest.NewStore()
+		store.Tags = []*tagtypes.Tag{dbTag, dbTag2}
+		m := &module{store: store}
+
+		toCreate, matched, err := m.resolve(context.Background(), orgID, testKind, []tagtypes.PostableTag{
+			{Key: "team", Value: "events"},    // new
+			{Key: "DATABASE", Value: "REDIS"}, // case-only conflict
+			{Key: "Brand", Value: "New"},      // new
+		})
+		require.NoError(t, err)
+
+		createdLowerKVs := []string{}
+		for _, tg := range toCreate {
+			createdLowerKVs = append(createdLowerKVs, strings.ToLower(tg.Key)+"\x00"+strings.ToLower(tg.Value))
+		}
+		assert.ElementsMatch(t, []string{"team\x00events", "brand\x00new"}, createdLowerKVs,
+			"only the two missing pairs should be returned for insertion")
+
+		require.Len(t, matched, 1, "DATABASE:REDIS should hit the existing 'Database:redis' tag")
+		assert.Same(t, dbTag2, matched[0], "matched should return the existing pointer with its authoritative ID")
+	})
+
+	t.Run("dedupes inputs that map to the same lower(key)+lower(value)", func(t *testing.T) {
+		orgID := valuer.GenerateUUID()
+		store := tagtypestest.NewStore()
+		m := &module{store: store}
+
+		toCreate, matched, err := m.resolve(context.Background(), orgID, testKind, []tagtypes.PostableTag{
+			{Key: "Foo", Value: "Bar"},
+			{Key: "foo", Value: "bar"},
+			{Key: "FOO", Value: "BAR"},
+		})
+		require.NoError(t, err)
+
+		require.Empty(t, matched)
+		require.Len(t, toCreate, 1, "duplicate inputs must collapse into a single insert")
+		assert.Equal(t, "Foo", toCreate[0].Key, "first input's casing wins")
+		assert.Equal(t, "Bar", toCreate[0].Value, "first input's casing wins")
+	})
+
+	t.Run("preserves existing casing on case-only match", func(t *testing.T) {
+		orgID := valuer.GenerateUUID()
+		dbTag := tagtypes.NewTag(orgID, testKind, "Team", "Pulse")
+		store := tagtypestest.NewStore()
+		store.Tags = []*tagtypes.Tag{dbTag}
+		m := &module{store: store}
+
+		toCreate, matched, err := m.resolve(context.Background(), orgID, testKind, []tagtypes.PostableTag{
+			{Key: "team", Value: "PULSE"},
+		})
+		require.NoError(t, err)
+
+		assert.Empty(t, toCreate)
+		require.Len(t, matched, 1)
+		assert.Equal(t, "Team", matched[0].Key)
+		assert.Equal(t, "Pulse", matched[0].Value)
+	})
+
+	t.Run("propagates validation error from any input", func(t *testing.T) {
+		store := tagtypestest.NewStore()
+		m := &module{store: store}
+
+		_, _, err := m.resolve(context.Background(), valuer.GenerateUUID(), testKind, []tagtypes.PostableTag{
+			{Key: "team", Value: "pulse"},
+			{Key: "", Value: "x"},
+		})
+		require.Error(t, err)
+	})
+
+	t.Run("propagates regex validation error", func(t *testing.T) {
+		store := tagtypestest.NewStore()
+		m := &module{store: store}
+
+		_, _, err := m.resolve(context.Background(), valuer.GenerateUUID(), testKind, []tagtypes.PostableTag{
+			{Key: "team!eng", Value: "pulse"},
+		})
+		require.Error(t, err)
+	})
+}

pkg/modules/tag/impltag/store.go

@@ -0,0 +1,148 @@
+package impltag
+
+import (
+	"context"
+
+	"github.com/SigNoz/signoz/pkg/sqlstore"
+	"github.com/SigNoz/signoz/pkg/types/coretypes"
+	"github.com/SigNoz/signoz/pkg/types/tagtypes"
+	"github.com/SigNoz/signoz/pkg/valuer"
+	"github.com/uptrace/bun"
+)
+
+type store struct {
+	sqlstore sqlstore.SQLStore
+}
+
+func NewStore(sqlstore sqlstore.SQLStore) tagtypes.Store {
+	return &store{sqlstore: sqlstore}
+}
+
+func (s *store) List(ctx context.Context, orgID valuer.UUID, kind coretypes.Kind) ([]*tagtypes.Tag, error) {
+	tags := make([]*tagtypes.Tag, 0)
+	err := s.sqlstore.
+		BunDBCtx(ctx).
+		NewSelect().
+		Model(&tags).
+		Where("org_id = ?", orgID).
+		Where("kind = ?", kind).
+		Scan(ctx)
+	if err != nil {
+		return nil, err
+	}
+	return tags, nil
+}
+
+func (s *store) ListByResource(ctx context.Context, orgID valuer.UUID, kind coretypes.Kind, resourceID valuer.UUID) ([]*tagtypes.Tag, error) {
+	tags := make([]*tagtypes.Tag, 0)
+	err := s.sqlstore.
+		BunDBCtx(ctx).
+		NewSelect().
+		Model(&tags).
+		Join("JOIN tag_relation AS tr ON tr.tag_id = tag.id").
+		Where("tr.kind = ?", kind).
+		Where("tr.resource_id = ?", resourceID).
+		Where("tag.org_id = ?", orgID).
+		Scan(ctx)
+	if err != nil {
+		return nil, err
+	}
+	return tags, nil
+}
+
+func (s *store) ListByResources(ctx context.Context, orgID valuer.UUID, kind coretypes.Kind, resourceIDs []valuer.UUID) (map[valuer.UUID][]*tagtypes.Tag, error) {
+	if len(resourceIDs) == 0 {
+		return map[valuer.UUID][]*tagtypes.Tag{}, nil
+	}
+
+	type joinedRow struct {
+		tagtypes.Tag `bun:",extend"`
+		ResourceID   valuer.UUID `bun:"resource_id"`
+	}
+
+	rows := make([]*joinedRow, 0)
+	err := s.sqlstore.
+		BunDBCtx(ctx).
+		NewSelect().
+		Model(&rows).
+		ColumnExpr("tag.*, tr.resource_id").
+		Join("JOIN tag_relation AS tr ON tr.tag_id = tag.id").
+		Where("tr.kind = ?", kind).
+		Where("tr.resource_id IN (?)", bun.In(resourceIDs)).
+		Where("tag.org_id = ?", orgID).
+		Scan(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	out := make(map[valuer.UUID][]*tagtypes.Tag)
+	for _, r := range rows {
+		tag := r.Tag
+		out[r.ResourceID] = append(out[r.ResourceID], &tag)
+	}
+	return out, nil
+}
+
+func (s *store) CreateOrGet(ctx context.Context, tags []*tagtypes.Tag) ([]*tagtypes.Tag, error) {
+	if len(tags) == 0 {
+		return tags, nil
+	}
+	// DO UPDATE on a self-set is a deliberate no-op write whose only purpose
+	// is to make RETURNING fire on conflicting rows. Without it, RETURNING is
+	// silent on the conflict path and we'd have to refetch by (key, value) to
+	// learn the existing rows' IDs after a concurrent-insert race. Setting
+	// key = tag.key (the existing row's value) preserves the first writer's
+	// casing on case-only collisions.
+	err := s.sqlstore.
+		BunDBCtx(ctx).
+		NewInsert().
+		Model(&tags).
+		On("CONFLICT (org_id, kind, (LOWER(key)), (LOWER(value))) DO UPDATE").
+		Set("key = tag.key").
+		Returning("*").
+		Scan(ctx)
+	if err != nil {
+		return nil, err
+	}
+	return tags, nil
+}
+
+func (s *store) CreateRelations(ctx context.Context, relations []*tagtypes.TagRelation) error {
+	if len(relations) == 0 {
+		return nil
+	}
+	_, err := s.sqlstore.
+		BunDBCtx(ctx).
+		NewInsert().
+		Model(&relations).
+		On("CONFLICT (kind, resource_id, tag_id) DO NOTHING").
+		Exec(ctx)
+	return err
+}
+
+func (s *store) DeleteRelationsExcept(ctx context.Context, orgID valuer.UUID, kind coretypes.Kind, resourceID valuer.UUID, keepTagIDs []valuer.UUID) error {
+	// Scope the delete to the caller's org via a subquery on tag — bun's
+	// DELETE-with-JOIN syntax isn't uniformly portable across Postgres/SQLite.
+	tagIDsToDelete := s.sqlstore.
+		BunDBCtx(ctx).
+		NewSelect().
+		TableExpr("tag").
+		Column("id").
+		Where("org_id = ?", orgID)
+	if len(keepTagIDs) > 0 {
+		tagIDsToDelete = tagIDsToDelete.Where("id NOT IN (?)", bun.In(keepTagIDs))
+	}
+	_, err := s.sqlstore.
+		BunDBCtx(ctx).
+		NewDelete().
+		Model((*tagtypes.TagRelation)(nil)).
+		Where("kind = ?", kind).
+		Where("resource_id = ?", resourceID).
+		Where("tag_id IN (?)", tagIDsToDelete).
+		Exec(ctx)
+	return err
+}
+
+func (s *store) RunInTx(ctx context.Context, cb func(ctx context.Context) error) error {
+	return s.sqlstore.RunInTxCtx(ctx, nil, cb)
+}

pkg/modules/tag/impltag/store_test.go

@@ -0,0 +1,147 @@
+package impltag
+
+import (
+	"context"
+	"path/filepath"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/SigNoz/signoz/pkg/factory/factorytest"
+	"github.com/SigNoz/signoz/pkg/sqlstore"
+	"github.com/SigNoz/signoz/pkg/sqlstore/sqlitesqlstore"
+	"github.com/SigNoz/signoz/pkg/types/coretypes"
+	"github.com/SigNoz/signoz/pkg/types/tagtypes"
+	"github.com/SigNoz/signoz/pkg/valuer"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"github.com/uptrace/bun"
+)
+
+func newTestStore(t *testing.T) sqlstore.SQLStore {
+	t.Helper()
+	dbPath := filepath.Join(t.TempDir(), "test.db")
+	store, err := sqlitesqlstore.New(context.Background(), factorytest.NewSettings(), sqlstore.Config{
+		Provider: "sqlite",
+		Connection: sqlstore.ConnectionConfig{
+			MaxOpenConns:    1,
+			MaxConnLifetime: 0,
+		},
+		Sqlite: sqlstore.SqliteConfig{
+			Path:            dbPath,
+			Mode:            "wal",
+			BusyTimeout:     5 * time.Second,
+			TransactionMode: "deferred",
+		},
+	})
+	require.NoError(t, err)
+
+	_, err = store.BunDB().NewCreateTable().
+		Model((*tagtypes.Tag)(nil)).
+		IfNotExists().
+		Exec(context.Background())
+	require.NoError(t, err)
+
+	_, err = store.BunDB().Exec(`CREATE UNIQUE INDEX IF NOT EXISTS uq_tag_org_kind_lower_key_lower_value ON tag (org_id, kind, LOWER(key), LOWER(value))`)
+	require.NoError(t, err)
+	return store
+}
+
+var dashboardKind = coretypes.KindDashboard
+
+func tagsByLowerKeyValue(t *testing.T, db *bun.DB) map[string]*tagtypes.Tag {
+	t.Helper()
+	all := make([]*tagtypes.Tag, 0)
+	require.NoError(t, db.NewSelect().Model(&all).Scan(context.Background()))
+	out := map[string]*tagtypes.Tag{}
+	for _, tag := range all {
+		out[strings.ToLower(tag.Key)+"\x00"+strings.ToLower(tag.Value)] = tag
+	}
+	return out
+}
+
+func TestStore_Create_PopulatesIDsOnFreshInsert(t *testing.T) {
+	ctx := context.Background()
+	sqlstore := newTestStore(t)
+	s := NewStore(sqlstore)
+
+	orgID := valuer.GenerateUUID()
+	tagA := tagtypes.NewTag(orgID, dashboardKind, "tag", "Database")
+	tagB := tagtypes.NewTag(orgID, dashboardKind, "team", "BLR")
+	preIDA := tagA.ID
+	preIDB := tagB.ID
+
+	got, err := s.CreateOrGet(ctx, []*tagtypes.Tag{tagA, tagB})
+	require.NoError(t, err)
+	require.Len(t, got, 2)
+
+	// No race → pre-generated IDs stand. The slice is what we passed in,
+	// confirming Scan didn't reallocate.
+	assert.Equal(t, preIDA, got[0].ID)
+	assert.Equal(t, preIDB, got[1].ID)
+
+	// And the rows are in the DB.
+	stored := tagsByLowerKeyValue(t, sqlstore.BunDB())
+	require.Contains(t, stored, "tag\x00database")
+	require.Contains(t, stored, "team\x00blr")
+	assert.Equal(t, preIDA, stored["tag\x00database"].ID)
+	assert.Equal(t, preIDB, stored["team\x00blr"].ID)
+}
+
+func TestStore_Create_ConflictReturnsExistingRowID(t *testing.T) {
+	ctx := context.Background()
+	sqlstore := newTestStore(t)
+	s := NewStore(sqlstore)
+
+	orgID := valuer.GenerateUUID()
+
+	// Simulate a concurrent insert: someone else has already inserted "tag:Database".
+	winner := tagtypes.NewTag(orgID, dashboardKind, "tag", "Database")
+	_, err := s.CreateOrGet(ctx, []*tagtypes.Tag{winner})
+	require.NoError(t, err)
+	winnerID := winner.ID
+
+	// Now our request runs with a different pre-generated ID for the same
+	// (key, value) — case differs but the functional unique index collapses
+	// them. RETURNING should overwrite our stale ID with winner's ID.
+	loser := tagtypes.NewTag(orgID, dashboardKind, "TAG", "DATABASE")
+	loserPreID := loser.ID
+	require.NotEqual(t, winnerID, loserPreID, "pre-generated IDs must differ for this test to be meaningful")
+
+	got, err := s.CreateOrGet(ctx, []*tagtypes.Tag{loser})
+	require.NoError(t, err)
+	require.Len(t, got, 1)
+
+	assert.Equal(t, winnerID, got[0].ID, "returned slice should carry the existing row's ID, not our stale one")
+	assert.Equal(t, winnerID, loser.ID, "input slice element is mutated in place")
+
+	// And the DB still has exactly one row for that (lower(key), lower(value)) — winner's, with winner's casing.
+	stored := tagsByLowerKeyValue(t, sqlstore.BunDB())
+	require.Len(t, stored, 1)
+	assert.Equal(t, winnerID, stored["tag\x00database"].ID)
+	assert.Equal(t, "tag", stored["tag\x00database"].Key, "winner's casing preserved in key")
+	assert.Equal(t, "Database", stored["tag\x00database"].Value, "winner's casing preserved in value")
+}
+
+func TestStore_Create_MixedFreshAndConflict(t *testing.T) {
+	ctx := context.Background()
+	sqlstore := newTestStore(t)
+	s := NewStore(sqlstore)
+
+	orgID := valuer.GenerateUUID()
+	pre := tagtypes.NewTag(orgID, dashboardKind, "tag", "Database")
+	_, err := s.CreateOrGet(ctx, []*tagtypes.Tag{pre})
+	require.NoError(t, err)
+	preExistingID := pre.ID
+
+	conflict := tagtypes.NewTag(orgID, dashboardKind, "tag", "Database")
+	fresh := tagtypes.NewTag(orgID, dashboardKind, "team", "BLR")
+	freshPreID := fresh.ID
+
+	got, err := s.CreateOrGet(ctx, []*tagtypes.Tag{conflict, fresh})
+	require.NoError(t, err)
+	require.Len(t, got, 2)
+
+	assert.Equal(t, preExistingID, got[0].ID, "conflicting row's ID overwritten with the existing row's")
+	assert.Equal(t, freshPreID, got[1].ID, "fresh row's pre-generated ID is preserved")
+}

pkg/modules/tag/tag.go

@@ -0,0 +1,20 @@
+package tag
+
+import (
+	"context"
+
+	"github.com/SigNoz/signoz/pkg/types/coretypes"
+	"github.com/SigNoz/signoz/pkg/types/tagtypes"
+	"github.com/SigNoz/signoz/pkg/valuer"
+)
+
+type Module interface {
+	// SyncTags resolves the given postable tags (creating new rows as needed)
+	// and reconciles the resource's links to exactly that set, all in one transaction.
+	SyncTags(ctx context.Context, orgID valuer.UUID, kind coretypes.Kind, resourceID valuer.UUID, postable []tagtypes.PostableTag) ([]*tagtypes.Tag, error)
+
+	ListForResource(ctx context.Context, orgID valuer.UUID, kind coretypes.Kind, resourceID valuer.UUID) ([]*tagtypes.Tag, error)
+
+	// Resources with no tags are absent from the returned map.
+	ListForResources(ctx context.Context, orgID valuer.UUID, kind coretypes.Kind, resourceIDs []valuer.UUID) (map[valuer.UUID][]*tagtypes.Tag, error)
+}

pkg/parser/filterquery/parse.go

@@ -0,0 +1,33 @@
+package filterquery
+
+import (
+	"fmt"
+
+	grammar "github.com/SigNoz/signoz/pkg/parser/filterquery/grammar"
+	"github.com/antlr4-go/antlr/v4"
+)
+
+func Parse(query string) (antlr.ParseTree, *antlr.CommonTokenStream, *ErrorCollector) {
+	collector := NewErrorCollector()
+	lexer := grammar.NewFilterQueryLexer(antlr.NewInputStream(query))
+	lexer.RemoveErrorListeners()
+	lexer.AddErrorListener(collector)
+	tokens := antlr.NewCommonTokenStream(lexer, 0)
+	parser := grammar.NewFilterQueryParser(tokens)
+	parser.RemoveErrorListeners()
+	parser.AddErrorListener(collector)
+	return parser.Query(), tokens, collector
+}
+
+type ErrorCollector struct {
+	*antlr.DefaultErrorListener
+	Errors []string
+}
+
+func NewErrorCollector() *ErrorCollector {
+	return &ErrorCollector{}
+}
+
+func (c *ErrorCollector) SyntaxError(_ antlr.Recognizer, _ any, line, column int, msg string, _ antlr.RecognitionException) {
+	c.Errors = append(c.Errors, fmt.Sprintf("syntax error at %d:%d — %s", line, column, msg))
+}

pkg/signoz/handler_test.go

@@ -17,6 +17,7 @@ import (
 	"github.com/SigNoz/signoz/pkg/modules/dashboard/impldashboard"
 	"github.com/SigNoz/signoz/pkg/modules/organization/implorganization"
 	"github.com/SigNoz/signoz/pkg/modules/retention/implretention"
+	"github.com/SigNoz/signoz/pkg/modules/tag/impltag"
 	"github.com/SigNoz/signoz/pkg/modules/user/impluser"
 	"github.com/SigNoz/signoz/pkg/querier"
 	"github.com/SigNoz/signoz/pkg/queryparser"
@@ -45,7 +46,8 @@ func TestNewHandlers(t *testing.T) {
 	emailing := emailingtest.New()
 	queryParser := queryparser.New(providerSettings)
 	require.NoError(t, err)
-	dashboardModule := impldashboard.NewModule(impldashboard.NewStore(sqlstore), providerSettings, nil, orgGetter, queryParser)
+	tagModule := impltag.NewModule(impltag.NewStore(sqlstore))
+	dashboardModule := impldashboard.NewModule(impldashboard.NewStore(sqlstore), sqlstore, providerSettings, nil, orgGetter, queryParser, tagModule)
 
 	flagger, err := flagger.New(context.Background(), instrumentationtest.New().ToProviderSettings(), flagger.Config{}, flagger.MustNewRegistry())
 	require.NoError(t, err)
@@ -53,8 +55,9 @@ func TestNewHandlers(t *testing.T) {
 	userRoleStore := impluser.NewUserRoleStore(sqlstore, providerSettings)
 
 	userGetter := impluser.NewGetter(impluser.NewStore(sqlstore, providerSettings), userRoleStore, flagger)
+
 	retentionGetter := implretention.NewGetter(implretention.NewStore(sqlstore))
-	modules := NewModules(sqlstore, tokenizer, emailing, providerSettings, orgGetter, alertmanager, nil, nil, nil, nil, nil, nil, nil, queryParser, Config{}, dashboardModule, userGetter, userRoleStore, nil, nil, retentionGetter, flagger)
+	modules := NewModules(sqlstore, tokenizer, emailing, providerSettings, orgGetter, alertmanager, nil, nil, nil, nil, nil, nil, nil, queryParser, Config{}, dashboardModule, userGetter, userRoleStore, nil, nil, retentionGetter, flagger, tagModule)
 
 	querierHandler := querier.NewHandler(providerSettings, nil, nil)
 	registryHandler := factory.NewHandler(nil)

pkg/signoz/module.go

@@ -45,6 +45,7 @@ import (
 	"github.com/SigNoz/signoz/pkg/modules/spanmapper/implspanmapper"
 	"github.com/SigNoz/signoz/pkg/modules/spanpercentile"
 	"github.com/SigNoz/signoz/pkg/modules/spanpercentile/implspanpercentile"
+	"github.com/SigNoz/signoz/pkg/modules/tag"
 	"github.com/SigNoz/signoz/pkg/modules/tracedetail"
 	"github.com/SigNoz/signoz/pkg/modules/tracedetail/impltracedetail"
 	"github.com/SigNoz/signoz/pkg/modules/tracefunnel"
@@ -88,6 +89,7 @@ type Modules struct {
 	TraceDetail      tracedetail.Module
 	SpanMapper       spanmapper.Module
 	LLMPricingRule   llmpricingrule.Module
+	Tag              tag.Module
 }
 
 func NewModules(
@@ -113,6 +115,7 @@ func NewModules(
 	cloudIntegrationModule cloudintegration.Module,
 	retentionGetter retention.Getter,
 	fl flagger.Flagger,
+	tagModule tag.Module,
 ) Modules {
 	quickfilter := implquickfilter.NewModule(implquickfilter.NewStore(sqlstore))
 	orgSetter := implorganization.NewSetter(implorganization.NewStore(sqlstore), alertmanager, quickfilter)
@@ -145,5 +148,6 @@ func NewModules(
 		TraceDetail:      impltracedetail.NewModule(impltracedetail.NewTraceStore(telemetryStore), providerSettings, config.TraceDetail),
 		SpanMapper:       implspanmapper.NewModule(implspanmapper.NewStore(sqlstore)),
 		LLMPricingRule:   impllmpricingrule.NewModule(impllmpricingrule.NewStore(sqlstore)),
+		Tag:              tagModule,
 	}
 }

pkg/signoz/module_test.go

@@ -19,6 +19,7 @@ import (
 	"github.com/SigNoz/signoz/pkg/modules/retention/implretention"
 	"github.com/SigNoz/signoz/pkg/modules/serviceaccount"
 	"github.com/SigNoz/signoz/pkg/modules/serviceaccount/implserviceaccount"
+	"github.com/SigNoz/signoz/pkg/modules/tag/impltag"
 	"github.com/SigNoz/signoz/pkg/modules/user/impluser"
 	"github.com/SigNoz/signoz/pkg/queryparser"
 	"github.com/SigNoz/signoz/pkg/sharder"
@@ -46,7 +47,8 @@ func TestNewModules(t *testing.T) {
 	emailing := emailingtest.New()
 	queryParser := queryparser.New(providerSettings)
 	require.NoError(t, err)
-	dashboardModule := impldashboard.NewModule(impldashboard.NewStore(sqlstore), providerSettings, nil, orgGetter, queryParser)
+	tagModule := impltag.NewModule(impltag.NewStore(sqlstore))
+	dashboardModule := impldashboard.NewModule(impldashboard.NewStore(sqlstore), sqlstore, providerSettings, nil, orgGetter, queryParser, tagModule)
 
 	flagger, err := flagger.New(context.Background(), instrumentationtest.New().ToProviderSettings(), flagger.Config{}, flagger.MustNewRegistry())
 	require.NoError(t, err)
@@ -58,7 +60,8 @@ func TestNewModules(t *testing.T) {
 	serviceAccount := implserviceaccount.NewModule(implserviceaccount.NewStore(sqlstore), nil, nil, nil, providerSettings, serviceaccount.Config{})
 
 	retentionGetter := implretention.NewGetter(implretention.NewStore(sqlstore))
-	modules := NewModules(sqlstore, tokenizer, emailing, providerSettings, orgGetter, alertmanager, nil, nil, nil, nil, nil, nil, nil, queryParser, Config{}, dashboardModule, userGetter, userRoleStore, serviceAccount, implcloudintegration.NewModule(), retentionGetter, flagger)
+
+	modules := NewModules(sqlstore, tokenizer, emailing, providerSettings, orgGetter, alertmanager, nil, nil, nil, nil, nil, nil, nil, queryParser, Config{}, dashboardModule, userGetter, userRoleStore, serviceAccount, implcloudintegration.NewModule(), retentionGetter, flagger, tagModule)
 
 	reflectVal := reflect.ValueOf(modules)
 	for i := 0; i < reflectVal.NumField(); i++ {

pkg/signoz/provider.go

@@ -200,6 +200,8 @@ func NewSQLMigrationProviderFactories(
 		sqlmigration.NewAddServiceAccountManagedRoleTransactionsFactory(sqlstore),
 		sqlmigration.NewAddSpanMapperFactory(sqlstore, sqlschema),
 		sqlmigration.NewAddLLMPricingRulesFactory(sqlstore, sqlschema),
+		sqlmigration.NewAddTagsFactory(sqlstore, sqlschema),
+		sqlmigration.NewAddPinnedDashboardFactory(sqlstore, sqlschema),
 	)
 }
 

pkg/signoz/signoz.go

@@ -32,6 +32,8 @@ import (
 	"github.com/SigNoz/signoz/pkg/modules/rulestatehistory"
 	"github.com/SigNoz/signoz/pkg/modules/serviceaccount"
 	"github.com/SigNoz/signoz/pkg/modules/serviceaccount/implserviceaccount"
+	"github.com/SigNoz/signoz/pkg/modules/tag"
+	"github.com/SigNoz/signoz/pkg/modules/tag/impltag"
 	"github.com/SigNoz/signoz/pkg/modules/user/impluser"
 	"github.com/SigNoz/signoz/pkg/prometheus"
 	"github.com/SigNoz/signoz/pkg/querier"
@@ -105,7 +107,7 @@ func New(
 	telemetrystoreProviderFactories factory.NamedMap[factory.ProviderFactory[telemetrystore.TelemetryStore, telemetrystore.Config]],
 	authNsCallback func(ctx context.Context, providerSettings factory.ProviderSettings, store authtypes.AuthNStore, licensing licensing.Licensing) (map[authtypes.AuthNProvider]authn.AuthN, error),
 	authzCallback func(context.Context, sqlstore.SQLStore, authz.Config, licensing.Licensing, []authz.OnBeforeRoleDelete) (factory.ProviderFactory[authz.AuthZ, authz.Config], error),
-	dashboardModuleCallback func(sqlstore.SQLStore, factory.ProviderSettings, analytics.Analytics, organization.Getter, queryparser.QueryParser, querier.Querier, licensing.Licensing) dashboard.Module,
+	dashboardModuleCallback func(sqlstore.SQLStore, factory.ProviderSettings, analytics.Analytics, organization.Getter, queryparser.QueryParser, querier.Querier, licensing.Licensing, tag.Module) dashboard.Module,
 	gatewayProviderFactory func(licensing.Licensing) factory.ProviderFactory[gateway.Gateway, gateway.Config],
 	auditorProviderFactories func(licensing.Licensing) factory.NamedMap[factory.ProviderFactory[auditor.Auditor, auditor.Config]],
 	meterReporterProviderFactories func(context.Context, factory.ProviderSettings, flagger.Flagger, licensing.Licensing, telemetrystore.TelemetryStore, retention.Getter, organization.Getter, zeus.Zeus) (factory.NamedMap[factory.ProviderFactory[meterreporter.Reporter, meterreporter.Config]], string),
@@ -332,8 +334,13 @@ func New(
 	// Initialize query parser (needed for dashboard module)
 	queryParser := queryparser.New(providerSettings)
 
-	// Initialize dashboard module
-	dashboard := dashboardModuleCallback(sqlstore, providerSettings, analytics, orgGetter, queryParser, querier, licensing)
+	// Initialize tag module — shared across modules that link entities to tags
+	// (currently dashboard; future: alerts, RBAC). Built once here and injected
+	// where needed.
+	tagModule := impltag.NewModule(impltag.NewStore(sqlstore))
+
+	// Initialize dashboard module (needed for authz registry)
+	dashboard := dashboardModuleCallback(sqlstore, providerSettings, analytics, orgGetter, queryParser, querier, licensing, tagModule)
 
 	// Initialize user getter
 	userGetter := impluser.NewGetter(userStore, userRoleStore, flagger)
@@ -455,7 +462,7 @@ func New(
 	}
 
 	// Initialize all modules
-	modules := NewModules(sqlstore, tokenizer, emailing, providerSettings, orgGetter, alertmanager, analytics, querier, telemetrystore, telemetryMetadataStore, authNs, authz, cache, queryParser, config, dashboard, userGetter, userRoleStore, serviceAccount, cloudIntegrationModule, retentionGetter, flagger)
+	modules := NewModules(sqlstore, tokenizer, emailing, providerSettings, orgGetter, alertmanager, analytics, querier, telemetrystore, telemetryMetadataStore, authNs, authz, cache, queryParser, config, dashboard, userGetter, userRoleStore, serviceAccount, cloudIntegrationModule, retentionGetter, flagger, tagModule)
 
 	// Initialize ruler from the variant-specific provider factories
 	rulerInstance, err := factory.NewProviderFromNamedMap(ctx, providerSettings, config.Ruler, rulerProviderFactories(cache, alertmanager, sqlstore, telemetrystore, telemetryMetadataStore, prometheus, orgGetter, modules.RuleStateHistory, querier, queryParser), "signoz")

pkg/sqlmigration/080_add_pinned_dashboard.go

@@ -0,0 +1,71 @@
+package sqlmigration
+
+import (
+	"context"
+
+	"github.com/SigNoz/signoz/pkg/factory"
+	"github.com/SigNoz/signoz/pkg/sqlschema"
+	"github.com/SigNoz/signoz/pkg/sqlstore"
+	"github.com/uptrace/bun"
+	"github.com/uptrace/bun/migrate"
+)
+
+type addPinnedDashboard struct {
+	sqlstore  sqlstore.SQLStore
+	sqlschema sqlschema.SQLSchema
+}
+
+func NewAddPinnedDashboardFactory(sqlstore sqlstore.SQLStore, sqlschema sqlschema.SQLSchema) factory.ProviderFactory[SQLMigration, Config] {
+	return factory.NewProviderFactory(factory.MustNewName("add_pinned_dashboard"), func(ctx context.Context, ps factory.ProviderSettings, c Config) (SQLMigration, error) {
+		return &addPinnedDashboard{
+			sqlstore:  sqlstore,
+			sqlschema: sqlschema,
+		}, nil
+	})
+}
+
+func (migration *addPinnedDashboard) Register(migrations *migrate.Migrations) error {
+	return migrations.Register(migration.Up, migration.Down)
+}
+
+func (migration *addPinnedDashboard) Up(ctx context.Context, db *bun.DB) error {
+	tx, err := db.BeginTx(ctx, nil)
+	if err != nil {
+		return err
+	}
+	defer func() { _ = tx.Rollback() }()
+
+	// Composite PK on (user_id, dashboard_id) prevents accidental double-pins
+	// for the same user/dashboard pair. Only org_id carries an FK — user_id and
+	// dashboard_id mirror tag_relations and skip FKs because cascade deletes
+	// are disabled at the platform level (see tags spec).
+	sqls := migration.sqlschema.Operator().CreateTable(&sqlschema.Table{
+		Name: "pinned_dashboard",
+		Columns: []*sqlschema.Column{
+			{Name: "user_id", DataType: sqlschema.DataTypeText, Nullable: false},
+			{Name: "dashboard_id", DataType: sqlschema.DataTypeText, Nullable: false},
+			{Name: "org_id", DataType: sqlschema.DataTypeText, Nullable: false},
+			{Name: "pinned_at", DataType: sqlschema.DataTypeTimestamp, Nullable: false, Default: "current_timestamp"},
+		},
+		PrimaryKeyConstraint: &sqlschema.PrimaryKeyConstraint{ColumnNames: []sqlschema.ColumnName{"user_id", "dashboard_id"}},
+		ForeignKeyConstraints: []*sqlschema.ForeignKeyConstraint{
+			{
+				ReferencingColumnName: sqlschema.ColumnName("org_id"),
+				ReferencedTableName:   sqlschema.TableName("organizations"),
+				ReferencedColumnName:  sqlschema.ColumnName("id"),
+			},
+		},
+	})
+
+	for _, sql := range sqls {
+		if _, err := tx.ExecContext(ctx, string(sql)); err != nil {
+			return err
+		}
+	}
+
+	return tx.Commit()
+}
+
+func (migration *addPinnedDashboard) Down(_ context.Context, _ *bun.DB) error {
+	return nil
+}

pkg/sqlmigration/081_add_tags.go

@@ -0,0 +1,114 @@
+package sqlmigration
+
+import (
+	"context"
+
+	"github.com/SigNoz/signoz/pkg/factory"
+	"github.com/SigNoz/signoz/pkg/sqlschema"
+	"github.com/SigNoz/signoz/pkg/sqlstore"
+	"github.com/uptrace/bun"
+	"github.com/uptrace/bun/migrate"
+)
+
+type addTags struct {
+	sqlstore  sqlstore.SQLStore
+	sqlschema sqlschema.SQLSchema
+}
+
+func NewAddTagsFactory(sqlstore sqlstore.SQLStore, sqlschema sqlschema.SQLSchema) factory.ProviderFactory[SQLMigration, Config] {
+	return factory.NewProviderFactory(factory.MustNewName("add_tags"), func(ctx context.Context, ps factory.ProviderSettings, c Config) (SQLMigration, error) {
+		return &addTags{
+			sqlstore:  sqlstore,
+			sqlschema: sqlschema,
+		}, nil
+	})
+}
+
+func (migration *addTags) Register(migrations *migrate.Migrations) error {
+	return migrations.Register(migration.Up, migration.Down)
+}
+
+func (migration *addTags) Up(ctx context.Context, db *bun.DB) error {
+	tx, err := db.BeginTx(ctx, nil)
+	if err != nil {
+		return err
+	}
+
+	defer func() {
+		_ = tx.Rollback()
+	}()
+
+	sqls := [][]byte{}
+
+	tagTableSQLs := migration.sqlschema.Operator().CreateTable(&sqlschema.Table{
+		Name: "tag",
+		Columns: []*sqlschema.Column{
+			{Name: "id", DataType: sqlschema.DataTypeText, Nullable: false},
+			{Name: "key", DataType: sqlschema.DataTypeText, Nullable: false},
+			{Name: "value", DataType: sqlschema.DataTypeText, Nullable: false},
+			{Name: "org_id", DataType: sqlschema.DataTypeText, Nullable: false},
+			{Name: "kind", DataType: sqlschema.DataTypeText, Nullable: false},
+			{Name: "created_at", DataType: sqlschema.DataTypeTimestamp, Nullable: false},
+			{Name: "updated_at", DataType: sqlschema.DataTypeTimestamp, Nullable: false},
+		},
+		PrimaryKeyConstraint: &sqlschema.PrimaryKeyConstraint{ColumnNames: []sqlschema.ColumnName{"id"}},
+		ForeignKeyConstraints: []*sqlschema.ForeignKeyConstraint{
+			{
+				ReferencingColumnName: sqlschema.ColumnName("org_id"),
+				ReferencedTableName:   sqlschema.TableName("organizations"),
+				ReferencedColumnName:  sqlschema.ColumnName("id"),
+			},
+		},
+	})
+	sqls = append(sqls, tagTableSQLs...)
+
+	// Case-insensitive uniqueness on (org_id, kind, key, value) — both Postgres
+	// and SQLite (modernc 3.50.x) support expression indexes.
+	tagUniqueIndexSQLs := migration.sqlschema.Operator().CreateIndex(
+		(&sqlschema.UniqueIndex{
+			TableName:   "tag",
+			ColumnNames: []sqlschema.ColumnName{"org_id", "kind", "key", "value"},
+			Expressions: []string{"org_id", "kind", "LOWER(key)", "LOWER(value)"},
+		}).Named("uq_tag_org_kind_lower_key_lower_value"),
+	)
+	sqls = append(sqls, tagUniqueIndexSQLs...)
+
+	tagRelationsTableSQLs := migration.sqlschema.Operator().CreateTable(&sqlschema.Table{
+		Name: "tag_relation",
+		Columns: []*sqlschema.Column{
+			{Name: "id", DataType: sqlschema.DataTypeText, Nullable: false},
+			{Name: "kind", DataType: sqlschema.DataTypeText, Nullable: false},
+			{Name: "resource_id", DataType: sqlschema.DataTypeText, Nullable: false},
+			{Name: "tag_id", DataType: sqlschema.DataTypeText, Nullable: false},
+		},
+		PrimaryKeyConstraint: &sqlschema.PrimaryKeyConstraint{ColumnNames: []sqlschema.ColumnName{"id"}},
+		ForeignKeyConstraints: []*sqlschema.ForeignKeyConstraint{
+			{
+				ReferencingColumnName: sqlschema.ColumnName("tag_id"),
+				ReferencedTableName:   sqlschema.TableName("tag"),
+				ReferencedColumnName:  sqlschema.ColumnName("id"),
+			},
+		},
+	})
+	sqls = append(sqls, tagRelationsTableSQLs...)
+
+	tagRelationUniqueIndexSQLs := migration.sqlschema.Operator().CreateIndex(
+		&sqlschema.UniqueIndex{
+			TableName:   "tag_relation",
+			ColumnNames: []sqlschema.ColumnName{"kind", "resource_id", "tag_id"},
+		},
+	)
+	sqls = append(sqls, tagRelationUniqueIndexSQLs...)
+
+	for _, sql := range sqls {
+		if _, err := tx.ExecContext(ctx, string(sql)); err != nil {
+			return err
+		}
+	}
+
+	return tx.Commit()
+}
+
+func (migration *addTags) Down(_ context.Context, _ *bun.DB) error {
+	return nil
+}

pkg/sqlschema/index.go

@@ -1,6 +1,8 @@
 package sqlschema
 
 import (
+	"fmt"
+	"hash/fnv"
 	"slices"
 	"strings"
 
@@ -49,9 +51,23 @@ type Index interface {
 	ToDropSQL(fmter SQLFormatter) []byte
 }
 
+// UniqueIndex models a unique index on a table.
+//
+// In the common case the index keys on plain columns: set only ColumnNames and
+// the SQL is emitted with each column identifier-quoted by the formatter
+// (`CREATE UNIQUE INDEX uq_t_a_b ON t (a, b)`).
+//
+// For functional indexes (e.g. case-insensitive uniqueness on `LOWER(col)`),
+// set Expressions to the raw SQL parts and use ColumnNames as metadata for
+// "which columns does this index touch". When Expressions is non-empty, it
+// overrides ColumnNames for SQL emission — each entry is written verbatim, so
+// the caller owns well-formedness — and the auto-generated name uses a hash
+// suffix instead of a readable column join because expressions aren't valid
+// identifier fragments.
 type UniqueIndex struct {
 	TableName   TableName
 	ColumnNames []ColumnName
+	Expressions []string
 	name        string
 }
 
@@ -71,16 +87,28 @@ func (index *UniqueIndex) Name() string {
 		}
 		b.WriteString(string(column))
 	}
+
+	if len(index.Expressions) > 0 {
+		if len(index.ColumnNames) > 0 {
+			b.WriteString("_")
+		}
+		hasher := fnv.New32a()
+		_, _ = hasher.Write([]byte(strings.Join(index.Expressions, "\x00")))
+		fmt.Fprintf(&b, "%08x", hasher.Sum32())
+	}
 	return b.String()
 }
 
 func (index *UniqueIndex) Named(name string) Index {
 	copyOfColumnNames := make([]ColumnName, len(index.ColumnNames))
 	copy(copyOfColumnNames, index.ColumnNames)
+	copyOfExpressions := make([]string, len(index.Expressions))
+	copy(copyOfExpressions, index.Expressions)
 
 	return &UniqueIndex{
 		TableName:   index.TableName,
 		ColumnNames: copyOfColumnNames,
+		Expressions: copyOfExpressions,
 		name:        name,
 	}
 }
@@ -101,7 +129,18 @@ func (index *UniqueIndex) Equals(other Index) bool {
 	if other.Type() != IndexTypeUnique {
 		return false
 	}
-
+	otherUnique, ok := other.(*UniqueIndex)
+	if !ok {
+		return false
+	}
+	// Plain and functional indexes produce different SQL even if their column
+	// sets overlap; require both shapes to match.
+	if (len(index.Expressions) == 0) != (len(otherUnique.Expressions) == 0) {
+		return false
+	}
+	if len(index.Expressions) > 0 && !slices.Equal(index.Expressions, otherUnique.Expressions) {
+		return false
+	}
 	return index.Name() == other.Name() && slices.Equal(index.Columns(), other.Columns())
 }
 
@@ -114,12 +153,20 @@ func (index *UniqueIndex) ToCreateSQL(fmter SQLFormatter) []byte {
 	sql = fmter.AppendIdent(sql, string(index.TableName))
 	sql = append(sql, " ("...)
 
-	for i, column := range index.ColumnNames {
-		if i > 0 {
-			sql = append(sql, ", "...)
+	if len(index.Expressions) > 0 {
+		for i, expr := range index.Expressions {
+			if i > 0 {
+				sql = append(sql, ", "...)
+			}
+			sql = append(sql, expr...)
+		}
+	} else {
+		for i, column := range index.ColumnNames {
+			if i > 0 {
+				sql = append(sql, ", "...)
+			}
+			sql = fmter.AppendIdent(sql, string(column))
 		}
-
-		sql = fmter.AppendIdent(sql, string(column))
 	}
 
 	sql = append(sql, ")"...)

pkg/sqlschema/index_test.go

@@ -38,6 +38,43 @@ func TestIndexToCreateSQL(t *testing.T) {
 			},
 			sql: `CREATE UNIQUE INDEX IF NOT EXISTS "my_index" ON "users" ("id", "name", "email")`,
 		},
+		{
+			name: "Unique_Functional_SingleExpression",
+			index: &UniqueIndex{
+				TableName:   "users",
+				ColumnNames: []ColumnName{"email"},
+				Expressions: []string{"LOWER(email)"},
+			},
+			sql: `CREATE UNIQUE INDEX IF NOT EXISTS "uq_users_email_1e5a87f1" ON "users" (LOWER(email))`,
+		},
+		{
+			name: "Unique_Functional_MixedColumnsAndExpressions",
+			index: &UniqueIndex{
+				TableName:   "tag",
+				ColumnNames: []ColumnName{"org_id", "kind", "key", "value"},
+				Expressions: []string{"org_id", "kind", "LOWER(key)", "LOWER(value)"},
+			},
+			sql: `CREATE UNIQUE INDEX IF NOT EXISTS "uq_tag_org_id_kind_key_value_57e8f81f" ON "tag" (org_id, kind, LOWER(key), LOWER(value))`,
+		},
+		{
+			name: "Unique_Functional_ComplexExpression",
+			index: &UniqueIndex{
+				TableName:   "users",
+				ColumnNames: []ColumnName{"first_name", "last_name"},
+				Expressions: []string{"LOWER(TRIM(first_name) || ' ' || TRIM(last_name))"},
+			},
+			sql: `CREATE UNIQUE INDEX IF NOT EXISTS "uq_users_first_name_last_name_adb1ff53" ON "users" (LOWER(TRIM(first_name) || ' ' || TRIM(last_name)))`,
+		},
+		{
+			name: "Unique_Functional_Named",
+			index: &UniqueIndex{
+				TableName:   "tag",
+				ColumnNames: []ColumnName{"org_id", "kind", "key", "value"},
+				Expressions: []string{"org_id", "kind", "LOWER(key)", "LOWER(value)"},
+				name:        "uq_tag_org_kind_lower_key_lower_value",
+			},
+			sql: `CREATE UNIQUE INDEX IF NOT EXISTS "uq_tag_org_kind_lower_key_lower_value" ON "tag" (org_id, kind, LOWER(key), LOWER(value))`,
+		},
 		{
 			name: "PartialUnique_1Column",
 			index: &PartialUniqueIndex{
@@ -229,6 +266,47 @@ func TestIndexEquals(t *testing.T) {
 			},
 			equals: false,
 		},
+		{
+			name: "Unique_Functional_Same",
+			a: &UniqueIndex{
+				TableName:   "users",
+				ColumnNames: []ColumnName{"email"},
+				Expressions: []string{"LOWER(email)"},
+			},
+			b: &UniqueIndex{
+				TableName:   "users",
+				ColumnNames: []ColumnName{"email"},
+				Expressions: []string{"LOWER(email)"},
+			},
+			equals: true,
+		},
+		{
+			name: "Unique_Functional_DifferentExpressions",
+			a: &UniqueIndex{
+				TableName:   "users",
+				ColumnNames: []ColumnName{"email"},
+				Expressions: []string{"LOWER(email)"},
+			},
+			b: &UniqueIndex{
+				TableName:   "users",
+				ColumnNames: []ColumnName{"email"},
+				Expressions: []string{"UPPER(email)"},
+			},
+			equals: false,
+		},
+		{
+			name: "Unique_Functional_NotEqualToPlainSameColumns",
+			a: &UniqueIndex{
+				TableName:   "users",
+				ColumnNames: []ColumnName{"email"},
+				Expressions: []string{"LOWER(email)"},
+			},
+			b: &UniqueIndex{
+				TableName:   "users",
+				ColumnNames: []ColumnName{"email"},
+			},
+			equals: false,
+		},
 	}
 
 	for _, testCase := range testCases {
@@ -238,6 +316,75 @@ func TestIndexEquals(t *testing.T) {
 	}
 }
 
+func TestUniqueIndexFunctionalName(t *testing.T) {
+	t.Run("autogen uses uq_<table>_<hash>", func(t *testing.T) {
+		idx := &UniqueIndex{
+			TableName:   "tag",
+			ColumnNames: []ColumnName{"org_id", "kind", "key", "value"},
+			Expressions: []string{"org_id", "kind", "LOWER(key)", "LOWER(value)"},
+		}
+		assert.Equal(t, "uq_tag_org_id_kind_key_value_57e8f81f", idx.Name())
+	})
+
+	t.Run("same expressions produce the same name", func(t *testing.T) {
+		a := &UniqueIndex{
+			TableName:   "users",
+			Expressions: []string{"LOWER(email)"},
+		}
+		b := &UniqueIndex{
+			TableName:   "users",
+			Expressions: []string{"LOWER(email)"},
+		}
+		assert.Equal(t, a.Name(), b.Name())
+	})
+
+	t.Run("different expressions produce different names", func(t *testing.T) {
+		a := &UniqueIndex{
+			TableName:   "users",
+			Expressions: []string{"LOWER(email)"},
+		}
+		b := &UniqueIndex{
+			TableName:   "users",
+			Expressions: []string{"UPPER(email)"},
+		}
+		assert.NotEqual(t, a.Name(), b.Name())
+	})
+
+	t.Run("expressions in different order produce different names", func(t *testing.T) {
+		a := &UniqueIndex{
+			TableName:   "tag",
+			Expressions: []string{"org_id", "LOWER(key)"},
+		}
+		b := &UniqueIndex{
+			TableName:   "tag",
+			Expressions: []string{"LOWER(key)", "org_id"},
+		}
+		assert.NotEqual(t, a.Name(), b.Name())
+	})
+
+	t.Run("functional autogen differs from plain autogen for same columns", func(t *testing.T) {
+		plain := &UniqueIndex{
+			TableName:   "users",
+			ColumnNames: []ColumnName{"email"},
+		}
+		functional := &UniqueIndex{
+			TableName:   "users",
+			ColumnNames: []ColumnName{"email"},
+			Expressions: []string{"LOWER(email)"},
+		}
+		assert.Equal(t, "uq_users_email", plain.Name())
+		assert.NotEqual(t, plain.Name(), functional.Name())
+	})
+
+	t.Run("Named() override wins over hash", func(t *testing.T) {
+		idx := (&UniqueIndex{
+			TableName:   "tag",
+			Expressions: []string{"org_id", "LOWER(key)"},
+		}).Named("my_functional_index")
+		assert.Equal(t, "my_functional_index", idx.Name())
+	})
+}
+
 func TestPartialUniqueIndexName(t *testing.T) {
 	a := &PartialUniqueIndex{
 		TableName:   "users",

pkg/types/dashboardtypes/list_v2.go

@@ -0,0 +1,124 @@
+package dashboardtypes
+
+import (
+	"strings"
+
+	"github.com/SigNoz/signoz/pkg/errors"
+	"github.com/SigNoz/signoz/pkg/types/tagtypes"
+	"github.com/SigNoz/signoz/pkg/valuer"
+)
+
+const (
+	DefaultListLimit = 20
+	MaxListLimit     = 200
+)
+
+// ListSort is the sort field for the dashboard list endpoint. The value is a
+// stable enum so callers can't ask for arbitrary columns.
+type ListSort string
+
+const (
+	ListSortUpdatedAt ListSort = "updated_at"
+	ListSortCreatedAt ListSort = "created_at"
+	ListSortName      ListSort = "name"
+)
+
+type ListOrder string
+
+const (
+	ListOrderAsc  ListOrder = "asc"
+	ListOrderDesc ListOrder = "desc"
+)
+
+var ErrCodeDashboardListInvalid = errors.MustNewCode("dashboard_list_invalid")
+
+type ListDashboardsV2Params struct {
+	Query  string    `query:"query"`
+	Sort   ListSort  `query:"sort"`
+	Order  ListOrder `query:"order"`
+	Limit  int       `query:"limit"`
+	Offset int       `query:"offset"`
+}
+
+// Validate fills in defaults (sort=updated_at, order=desc, limit=20) and
+// rejects out-of-allowlist sort/order values and bad limit/offset. Limit is
+// clamped to MaxListLimit on the high side. Lowercases sort/order so callers
+// can pass them in any case.
+func (p *ListDashboardsV2Params) Validate() error {
+	if p.Sort == "" {
+		p.Sort = ListSortUpdatedAt
+	} else {
+		p.Sort = ListSort(strings.ToLower(string(p.Sort)))
+		switch p.Sort {
+		case ListSortUpdatedAt, ListSortCreatedAt, ListSortName:
+		default:
+			return errors.NewInvalidInputf(ErrCodeDashboardListInvalid,
+				"invalid sort %q — expected one of: updated_at, created_at, name", p.Sort)
+		}
+	}
+
+	if p.Order == "" {
+		p.Order = ListOrderDesc
+	} else {
+		p.Order = ListOrder(strings.ToLower(string(p.Order)))
+		switch p.Order {
+		case ListOrderAsc, ListOrderDesc:
+		default:
+			return errors.NewInvalidInputf(ErrCodeDashboardListInvalid,
+				"invalid order %q — expected asc or desc", p.Order)
+		}
+	}
+
+	if p.Limit == 0 {
+		p.Limit = DefaultListLimit
+	} else if p.Limit < 0 {
+		return errors.NewInvalidInputf(ErrCodeDashboardListInvalid,
+			"invalid limit %d — must be a positive integer", p.Limit)
+	} else if p.Limit > MaxListLimit {
+		p.Limit = MaxListLimit
+	}
+
+	if p.Offset < 0 {
+		return errors.NewInvalidInputf(ErrCodeDashboardListInvalid,
+			"invalid offset %d — must be a non-negative integer", p.Offset)
+	}
+
+	return nil
+}
+
+type gettableDashboardWithPin struct {
+	GettableDashboardV2
+	Pinned bool `json:"pinned"`
+}
+
+type ListableDashboardV2 struct {
+	Dashboards []*gettableDashboardWithPin `json:"dashboards"`
+	HasMore    bool                        `json:"hasMore"`
+}
+
+// DashboardListRow is the per-row shape Store.ListV2 returns. Bundles the
+// joined dashboard / public_dashboard / pinned_dashboard data so the module
+// layer can attach tags and assemble the gettable view.
+type DashboardListRow struct {
+	Dashboard *StorableDashboard
+	Public    *StorablePublicDashboard // nil if no public_dashboard row exists
+	Pinned    bool
+}
+
+func NewListableDashboardV2(rows []*DashboardListRow, tagsByEntity map[valuer.UUID][]*tagtypes.Tag, hasMore bool) (*ListableDashboardV2, error) {
+	dashboards := make([]*gettableDashboardWithPin, len(rows))
+	for i, r := range rows {
+		v2, err := NewDashboardV2FromStorable(r.Dashboard, r.Public, tagsByEntity[r.Dashboard.ID])
+		if err != nil {
+			return nil, err
+		}
+		dashboards[i] = &gettableDashboardWithPin{
+			GettableDashboardV2: *NewGettableDashboardV2FromDashboardV2(v2),
+			Pinned:              r.Pinned,
+		}
+	}
+	return &ListableDashboardV2{
+		Dashboards: dashboards,
+		HasMore:    hasMore,
+	}, nil
+}

pkg/types/dashboardtypes/listfilter/constants.go

@@ -0,0 +1,61 @@
+package listfilter
+
+import (
+	"github.com/SigNoz/signoz/pkg/errors"
+	"github.com/SigNoz/signoz/pkg/types/dashboardtypes"
+	qbtypesv5 "github.com/SigNoz/signoz/pkg/types/querybuildertypes/querybuildertypesv5"
+)
+
+var ErrCodeDashboardListFilterInvalid = errors.MustNewCode("dashboard_list_filter_invalid")
+
+// reservedOps lists the operators each reserved (column-level) DSL key accepts.
+// Any non-reserved key is treated as a tag key and uses tagKeyOps.
+var reservedOps = map[dashboardtypes.DSLKey]map[qbtypesv5.FilterOperator]struct{}{
+	dashboardtypes.DSLKeyName:        stringSearchOps(),
+	dashboardtypes.DSLKeyDescription: stringSearchOps(),
+	dashboardtypes.DSLKeyCreatedAt:   numericRangeOps(),
+	dashboardtypes.DSLKeyUpdatedAt:   numericRangeOps(),
+	dashboardtypes.DSLKeyCreatedBy:   stringSearchOps(),
+	dashboardtypes.DSLKeyLocked:      opsSet(qbtypesv5.FilterOperatorEqual, qbtypesv5.FilterOperatorNotEqual),
+	dashboardtypes.DSLKeyPublic:      opsSet(qbtypesv5.FilterOperatorEqual, qbtypesv5.FilterOperatorNotEqual),
+}
+
+// tagKeyOps applies to every non-reserved DSL key — the operator targets the
+// tag's value with an implicit case-insensitive match on the tag's key.
+var tagKeyOps = opsSet(
+	qbtypesv5.FilterOperatorEqual, qbtypesv5.FilterOperatorNotEqual,
+	qbtypesv5.FilterOperatorLike, qbtypesv5.FilterOperatorNotLike,
+	qbtypesv5.FilterOperatorILike, qbtypesv5.FilterOperatorNotILike,
+	qbtypesv5.FilterOperatorContains, qbtypesv5.FilterOperatorNotContains,
+	qbtypesv5.FilterOperatorRegexp, qbtypesv5.FilterOperatorNotRegexp,
+	qbtypesv5.FilterOperatorIn, qbtypesv5.FilterOperatorNotIn,
+	qbtypesv5.FilterOperatorExists, qbtypesv5.FilterOperatorNotExists,
+)
+
+func stringSearchOps() map[qbtypesv5.FilterOperator]struct{} {
+	return opsSet(
+		qbtypesv5.FilterOperatorEqual, qbtypesv5.FilterOperatorNotEqual,
+		qbtypesv5.FilterOperatorLike, qbtypesv5.FilterOperatorNotLike,
+		qbtypesv5.FilterOperatorILike, qbtypesv5.FilterOperatorNotILike,
+		qbtypesv5.FilterOperatorContains, qbtypesv5.FilterOperatorNotContains,
+		qbtypesv5.FilterOperatorRegexp, qbtypesv5.FilterOperatorNotRegexp,
+		qbtypesv5.FilterOperatorIn, qbtypesv5.FilterOperatorNotIn,
+	)
+}
+
+func numericRangeOps() map[qbtypesv5.FilterOperator]struct{} {
+	return opsSet(
+		qbtypesv5.FilterOperatorEqual, qbtypesv5.FilterOperatorNotEqual,
+		qbtypesv5.FilterOperatorLessThan, qbtypesv5.FilterOperatorLessThanOrEq,
+		qbtypesv5.FilterOperatorGreaterThan, qbtypesv5.FilterOperatorGreaterThanOrEq,
+		qbtypesv5.FilterOperatorBetween, qbtypesv5.FilterOperatorNotBetween,
+	)
+}
+
+func opsSet(ops ...qbtypesv5.FilterOperator) map[qbtypesv5.FilterOperator]struct{} {
+	m := make(map[qbtypesv5.FilterOperator]struct{}, len(ops))
+	for _, op := range ops {
+		m[op] = struct{}{}
+	}
+	return m
+}

pkg/types/dashboardtypes/listfilter/listfilter.go

@@ -0,0 +1,39 @@
+package listfilter
+
+import (
+	"strings"
+
+	"github.com/SigNoz/signoz/pkg/errors"
+	"github.com/SigNoz/signoz/pkg/sqlstore"
+)
+
+type Compiled struct {
+	SQL  string
+	Args []any
+}
+
+func Compile(query string, formatter sqlstore.SQLFormatter) (*Compiled, error) {
+	if len(query) == 0 {
+		return nil, nil
+	}
+
+	queryVisitor := newVisitor(formatter)
+	frag, syntaxErrs := queryVisitor.compile(query)
+
+	if len(syntaxErrs) > 0 {
+		return nil, errors.NewInvalidInputf(ErrCodeDashboardListFilterInvalid,
+			"invalid filter query: %s", strings.Join(syntaxErrs, "; "))
+	}
+	if len(queryVisitor.errors) > 0 {
+		return nil, errors.NewInvalidInputf(ErrCodeDashboardListFilterInvalid,
+			"invalid filter query: %s", strings.Join(queryVisitor.errors, "; "))
+	}
+	if frag == nil || frag.sql == "" {
+		return nil, nil
+	}
+
+	return &Compiled{
+		SQL:  frag.sql,
+		Args: frag.args,
+	}, nil
+}

pkg/types/dashboardtypes/listfilter/listfilter_test.go

@@ -0,0 +1,507 @@
+package listfilter
+
+import (
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/DATA-DOG/go-sqlmock"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
+	"github.com/SigNoz/signoz/pkg/sqlstore"
+	"github.com/SigNoz/signoz/pkg/sqlstore/sqlstoretest"
+)
+
+type compileCase struct {
+	subtestName              string
+	dslQueryToCompile        string
+	nilExpected              bool
+	expectedSQL              string
+	expectedArgs             []any
+	expectedErrShouldContain string
+}
+
+func runCompileCases(t *testing.T, cases []compileCase) {
+	t.Helper()
+	for _, c := range cases {
+		t.Run(c.subtestName, func(t *testing.T) {
+			out, err := Compile(c.dslQueryToCompile, formatter(t))
+
+			if c.expectedErrShouldContain != "" {
+				require.Error(t, err)
+				assert.Contains(t, strings.ToLower(err.Error()), strings.ToLower(c.expectedErrShouldContain))
+				return
+			}
+
+			require.NoError(t, err)
+			if c.nilExpected {
+				assert.Nil(t, out)
+				return
+			}
+			require.NotNil(t, out)
+
+			if c.expectedSQL != "" {
+				assert.Equal(t, normalizeSQL(c.expectedSQL), normalizeSQL(out.SQL))
+			}
+			if c.expectedArgs != nil {
+				require.Len(t, out.Args, len(c.expectedArgs))
+				for i, want := range c.expectedArgs {
+					// time.Time values can carry semantically-equal instants
+					// in different *Location representations (UTC vs Local vs
+					// FixedZone). Compare via .Equal() instead of DeepEqual.
+					if wantT, ok := want.(time.Time); ok {
+						gotT, ok := out.Args[i].(time.Time)
+						require.True(t, ok, "arg[%d]: want time.Time, got %T", i, out.Args[i])
+						assert.True(t, wantT.Equal(gotT), "arg[%d]: want %s, got %s", i, wantT, gotT)
+						continue
+					}
+					assert.Equal(t, want, out.Args[i], "arg[%d]", i)
+				}
+			}
+		})
+	}
+}
+
+func TestCompile_Empty(t *testing.T) {
+	runCompileCases(t, []compileCase{
+		{subtestName: "empty query yields nil", dslQueryToCompile: "", nilExpected: true},
+	})
+}
+
+func TestCompile_Name(t *testing.T) {
+	runCompileCases(t, []compileCase{
+		{
+			subtestName:       "name =",
+			dslQueryToCompile: `name = 'overview'`,
+			expectedSQL:       `json_extract("dashboard"."data", '$.data.display.name') = ?`,
+			expectedArgs:      []any{"overview"},
+		},
+		{
+			// QUOTED_TEXT in the grammar covers both '…' and "…" — visitor
+			// strips whichever quote pair surrounds the value.
+			subtestName:       "name = with double-quoted value",
+			dslQueryToCompile: `name = "something"`,
+			expectedSQL:       `json_extract("dashboard"."data", '$.data.display.name') = ?`,
+			expectedArgs:      []any{"something"},
+		},
+		{
+			subtestName:       "name CONTAINS",
+			dslQueryToCompile: `name CONTAINS 'overview'`,
+			expectedSQL:       `json_extract("dashboard"."data", '$.data.display.name') LIKE ?`,
+			expectedArgs:      []any{"%overview%"},
+		},
+		{
+			subtestName:       "name ILIKE — emitted as LOWER(col) LIKE LOWER(?) for dialect parity",
+			dslQueryToCompile: `name ILIKE 'Prod%'`,
+			expectedSQL:       `lower(json_extract("dashboard"."data", '$.data.display.name')) LIKE LOWER(?)`,
+			expectedArgs:      []any{"Prod%"},
+		},
+		{
+			subtestName:       "CONTAINS escapes % in user input",
+			dslQueryToCompile: `name CONTAINS '50%'`,
+			expectedSQL:       `json_extract("dashboard"."data", '$.data.display.name') LIKE ?`,
+			expectedArgs:      []any{`%50\%%`},
+		},
+	})
+}
+
+func TestCompile_CreatedByLocked(t *testing.T) {
+	runCompileCases(t, []compileCase{
+		{
+			subtestName:       "created_by LIKE",
+			dslQueryToCompile: `created_by LIKE '%@signoz.io'`,
+			expectedSQL:       `dashboard.created_by LIKE ?`,
+			expectedArgs:      []any{"%@signoz.io"},
+		},
+		{
+			subtestName:       "locked = true",
+			dslQueryToCompile: `locked = true`,
+			expectedSQL:       `dashboard.locked = ?`,
+			expectedArgs:      []any{true},
+		},
+	})
+}
+
+func TestCompile_Public(t *testing.T) {
+	runCompileCases(t, []compileCase{
+		{subtestName: "public = true", dslQueryToCompile: `public = true`, expectedSQL: `pd.id IS NOT NULL`},
+		{subtestName: "public = false", dslQueryToCompile: `public = false`, expectedSQL: `pd.id IS NULL`},
+		{subtestName: "public != true", dslQueryToCompile: `public != true`, expectedSQL: `pd.id IS NULL`},
+	})
+}
+
+func TestCompile_Timestamps(t *testing.T) {
+	ist := time.FixedZone("+05:30", 5*60*60+30*60)
+	runCompileCases(t, []compileCase{
+		{
+			subtestName:       "created_at >= RFC3339",
+			dslQueryToCompile: `created_at >= '2026-03-10T00:00:00Z'`,
+			expectedSQL:       `dashboard.created_at >= ?`,
+			expectedArgs:      []any{time.Date(2026, 3, 10, 0, 0, 0, 0, time.UTC)},
+		},
+		{
+			subtestName:       "updated_at BETWEEN",
+			dslQueryToCompile: `updated_at BETWEEN '2026-03-10T00:00:00Z' AND '2026-03-20T00:00:00Z'`,
+			expectedSQL:       `dashboard.updated_at BETWEEN ? AND ?`,
+			expectedArgs: []any{
+				time.Date(2026, 3, 10, 0, 0, 0, 0, time.UTC),
+				time.Date(2026, 3, 20, 0, 0, 0, 0, time.UTC),
+			},
+		},
+		{
+			subtestName:       "created_at >= IST timestamp",
+			dslQueryToCompile: `created_at >= '2026-03-10T05:30:00+05:30'`,
+			expectedSQL:       `dashboard.created_at >= ?`,
+			expectedArgs:      []any{time.Date(2026, 3, 10, 5, 30, 0, 0, ist)},
+		},
+	})
+}
+
+// Tag operators wrap each predicate in EXISTS / NOT EXISTS. Any non-reserved
+// key is a tag key — `team = 'pulse'` matches a tag with key=team value=pulse,
+// `tag = 'prod'` matches a tag with key=tag value=prod, and so on.
+func TestCompile_Tag(t *testing.T) {
+	runCompileCases(t, []compileCase{
+		{
+			subtestName:       "team = wraps in EXISTS",
+			dslQueryToCompile: `team = 'pulse'`,
+			expectedSQL: `
+				EXISTS (
+					SELECT 1 FROM tag_relations tr
+					JOIN tag t ON t.id = tr.tag_id
+					WHERE tr.entity_type = 'dashboard' AND tr.entity_id = dashboard.id
+					AND LOWER(t.key) = LOWER(?)
+					AND t.value = ?
+				)`,
+			expectedArgs: []any{"team", "pulse"},
+		},
+		{
+			subtestName:       "tag = is just a regular tag-key filter",
+			dslQueryToCompile: `tag = 'database'`,
+			expectedSQL: `
+				EXISTS (
+					SELECT 1 FROM tag_relations tr
+					JOIN tag t ON t.id = tr.tag_id
+					WHERE tr.entity_type = 'dashboard' AND tr.entity_id = dashboard.id
+					AND LOWER(t.key) = LOWER(?)
+					AND t.value = ?
+				)`,
+			expectedArgs: []any{"tag", "database"},
+		},
+		{
+			subtestName:       "team != wraps in NOT EXISTS with positive inner",
+			dslQueryToCompile: `team != 'pulse'`,
+			expectedSQL: `
+				NOT EXISTS (
+					SELECT 1 FROM tag_relations tr
+					JOIN tag t ON t.id = tr.tag_id
+					WHERE tr.entity_type = 'dashboard' AND tr.entity_id = dashboard.id
+					AND LOWER(t.key) = LOWER(?)
+					AND t.value = ?
+				)`,
+			expectedArgs: []any{"team", "pulse"},
+		},
+		{
+			subtestName:       "team IN — inner is single placeholder list on t.value",
+			dslQueryToCompile: `team IN ['pulse', 'events']`,
+			expectedSQL: `
+				EXISTS (
+					SELECT 1 FROM tag_relations tr
+					JOIN tag t ON t.id = tr.tag_id
+					WHERE tr.entity_type = 'dashboard' AND tr.entity_id = dashboard.id
+					AND LOWER(t.key) = LOWER(?)
+					AND t.value IN (?, ?)
+				)`,
+			expectedArgs: []any{"team", "pulse", "events"},
+		},
+		{
+			subtestName:       "team NOT IN",
+			dslQueryToCompile: `team NOT IN ['pulse', 'events']`,
+			expectedSQL: `
+				NOT EXISTS (
+					SELECT 1 FROM tag_relations tr
+					JOIN tag t ON t.id = tr.tag_id
+					WHERE tr.entity_type = 'dashboard' AND tr.entity_id = dashboard.id
+					AND LOWER(t.key) = LOWER(?)
+					AND t.value IN (?, ?)
+				)`,
+			expectedArgs: []any{"team", "pulse", "events"},
+		},
+		{
+			subtestName:       "team LIKE — wildcard on value",
+			dslQueryToCompile: `team LIKE 'pulse%'`,
+			expectedSQL: `
+				EXISTS (
+					SELECT 1 FROM tag_relations tr
+					JOIN tag t ON t.id = tr.tag_id
+					WHERE tr.entity_type = 'dashboard' AND tr.entity_id = dashboard.id
+					AND LOWER(t.key) = LOWER(?)
+					AND t.value LIKE ?
+				)`,
+			expectedArgs: []any{"team", "pulse%"},
+		},
+		{
+			subtestName:       "team NOT LIKE",
+			dslQueryToCompile: `team NOT LIKE 'staging%'`,
+			expectedSQL: `
+				NOT EXISTS (
+					SELECT 1 FROM tag_relations tr
+					JOIN tag t ON t.id = tr.tag_id
+					WHERE tr.entity_type = 'dashboard' AND tr.entity_id = dashboard.id
+					AND LOWER(t.key) = LOWER(?)
+					AND t.value LIKE ?
+				)`,
+			expectedArgs: []any{"team", "staging%"},
+		},
+		{
+			subtestName:       "database EXISTS — asserts a tag with key=database is present",
+			dslQueryToCompile: `database EXISTS`,
+			expectedSQL: `
+				EXISTS (
+					SELECT 1 FROM tag_relations tr
+					JOIN tag t ON t.id = tr.tag_id
+					WHERE tr.entity_type = 'dashboard' AND tr.entity_id = dashboard.id
+					AND LOWER(t.key) = LOWER(?)
+				)`,
+			expectedArgs: []any{"database"},
+		},
+		{
+			subtestName:       "database NOT EXISTS",
+			dslQueryToCompile: `database NOT EXISTS`,
+			expectedSQL: `
+				NOT EXISTS (
+					SELECT 1 FROM tag_relations tr
+					JOIN tag t ON t.id = tr.tag_id
+					WHERE tr.entity_type = 'dashboard' AND tr.entity_id = dashboard.id
+					AND LOWER(t.key) = LOWER(?)
+				)`,
+			expectedArgs: []any{"database"},
+		},
+		{
+			subtestName:       "tag-key matching is case-insensitive — TEAM lowercased",
+			dslQueryToCompile: `TEAM = 'pulse'`,
+			expectedSQL: `
+				EXISTS (
+					SELECT 1 FROM tag_relations tr
+					JOIN tag t ON t.id = tr.tag_id
+					WHERE tr.entity_type = 'dashboard' AND tr.entity_id = dashboard.id
+					AND LOWER(t.key) = LOWER(?)
+					AND t.value = ?
+				)`,
+			expectedArgs: []any{"team", "pulse"},
+		},
+	})
+}
+
+func TestCompile_BooleanComposition(t *testing.T) {
+	runCompileCases(t, []compileCase{
+		{
+			subtestName:       "AND chain — flat arg list",
+			dslQueryToCompile: `locked = true AND public = true`,
+			expectedSQL:       `dashboard.locked = ? AND pd.id IS NOT NULL`,
+			expectedArgs:      []any{true},
+		},
+		{
+			subtestName:       "OR chain",
+			dslQueryToCompile: `locked = true OR public = true`,
+			expectedSQL:       `dashboard.locked = ? OR pd.id IS NOT NULL`,
+			expectedArgs:      []any{true},
+		},
+		{
+			subtestName:       "parens preserve precedence",
+			dslQueryToCompile: `(locked = true OR public = true) AND created_by = 'a@b.com'`,
+			expectedSQL:       `(dashboard.locked = ? OR pd.id IS NOT NULL) AND dashboard.created_by = ?`,
+			expectedArgs:      []any{true, "a@b.com"},
+		},
+	})
+}
+
+// Distinct from operator-suffix negation (NOT IN / NOT LIKE / NOT EXISTS).
+// Driven by the unaryExpression rule (`NOT? primary`), so NOT binds to
+// exactly one primary and only widens via parens.
+func TestCompile_NOT(t *testing.T) {
+	runCompileCases(t, []compileCase{
+		{
+			subtestName:       "NOT on a single comparison",
+			dslQueryToCompile: `NOT name = 'foo'`,
+			expectedSQL:       `NOT (json_extract("dashboard"."data", '$.data.display.name') = ?)`,
+			expectedArgs:      []any{"foo"},
+		},
+		{
+			subtestName:       "NOT binds tightly to its primary in an AND chain",
+			dslQueryToCompile: `NOT name = 'foo' AND created_by = 'alice'`,
+			expectedSQL:       `NOT (json_extract("dashboard"."data", '$.data.display.name') = ?) AND dashboard.created_by = ?`,
+			expectedArgs:      []any{"foo", "alice"},
+		},
+		{
+			subtestName:       "NOT applied to the second term in an AND chain",
+			dslQueryToCompile: `locked = true AND NOT name = 'foo'`,
+			expectedSQL:       `dashboard.locked = ? AND NOT (json_extract("dashboard"."data", '$.data.display.name') = ?)`,
+			expectedArgs:      []any{true, "foo"},
+		},
+		{
+			subtestName:       "NOT around a parenthesized OR",
+			dslQueryToCompile: `NOT (locked = true OR public = true)`,
+			expectedSQL:       `NOT ((dashboard.locked = ? OR pd.id IS NOT NULL))`,
+			expectedArgs:      []any{true},
+		},
+		{
+			subtestName:       "double NOT via parens",
+			dslQueryToCompile: `NOT (NOT name = 'foo')`,
+			expectedSQL:       `NOT ((NOT (json_extract("dashboard"."data", '$.data.display.name') = ?)))`,
+			expectedArgs:      []any{"foo"},
+		},
+		{
+			subtestName:       "NOT on a tag equality",
+			dslQueryToCompile: `NOT team = 'pulse'`,
+			expectedSQL: `
+				NOT (
+					EXISTS (
+						SELECT 1 FROM tag_relations tr
+						JOIN tag t ON t.id = tr.tag_id
+						WHERE tr.entity_type = 'dashboard' AND tr.entity_id = dashboard.id
+						AND LOWER(t.key) = LOWER(?)
+						AND t.value = ?
+					)
+				)`,
+			expectedArgs: []any{"team", "pulse"},
+		},
+		{
+			subtestName:       "NOT team = ... AND name = ...",
+			dslQueryToCompile: `NOT team = 'pulse' AND name = 'overview'`,
+			expectedSQL: `
+				NOT (
+					EXISTS (
+						SELECT 1 FROM tag_relations tr
+						JOIN tag t ON t.id = tr.tag_id
+						WHERE tr.entity_type = 'dashboard' AND tr.entity_id = dashboard.id
+						AND LOWER(t.key) = LOWER(?)
+						AND t.value = ?
+					)
+				)
+				AND json_extract("dashboard"."data", '$.data.display.name') = ?`,
+			expectedArgs: []any{"team", "pulse", "overview"},
+		},
+	})
+}
+
+func TestCompile_ComplexExamples(t *testing.T) {
+	runCompileCases(t, []compileCase{
+		{
+			subtestName:       "name CONTAINS + tag LIKE + created_by + database =",
+			dslQueryToCompile: `name CONTAINS 'overview' AND tag LIKE 'prod%' AND created_by = 'naman.verma@signoz.io' AND database = 'mongo'`,
+			expectedSQL: `
+				json_extract("dashboard"."data", '$.data.display.name') LIKE ?
+				AND EXISTS (
+					SELECT 1 FROM tag_relations tr
+					JOIN tag t ON t.id = tr.tag_id
+					WHERE tr.entity_type = 'dashboard' AND tr.entity_id = dashboard.id
+					AND LOWER(t.key) = LOWER(?)
+					AND t.value LIKE ?
+				)
+				AND dashboard.created_by = ?
+				AND EXISTS (
+					SELECT 1 FROM tag_relations tr
+					JOIN tag t ON t.id = tr.tag_id
+					WHERE tr.entity_type = 'dashboard' AND tr.entity_id = dashboard.id
+					AND LOWER(t.key) = LOWER(?)
+					AND t.value = ?
+				)`,
+			expectedArgs: []any{"%overview%", "tag", "prod%", "naman.verma@signoz.io", "database", "mongo"},
+		},
+		{
+			subtestName:       "team IN AND database EXISTS",
+			dslQueryToCompile: `team IN ['pulse', 'events'] AND database EXISTS`,
+			expectedSQL: `
+				EXISTS (
+					SELECT 1 FROM tag_relations tr
+					JOIN tag t ON t.id = tr.tag_id
+					WHERE tr.entity_type = 'dashboard' AND tr.entity_id = dashboard.id
+					AND LOWER(t.key) = LOWER(?)
+					AND t.value IN (?, ?)
+				)
+				AND EXISTS (
+					SELECT 1 FROM tag_relations tr
+					JOIN tag t ON t.id = tr.tag_id
+					WHERE tr.entity_type = 'dashboard' AND tr.entity_id = dashboard.id
+					AND LOWER(t.key) = LOWER(?)
+				)`,
+			expectedArgs: []any{"team", "pulse", "events", "database"},
+		},
+		{
+			subtestName:       "nested OR / AND with parens",
+			dslQueryToCompile: `(database IN ['sql', 'redis', 'mongo'] OR name LIKE '%database%') AND (team = 'pulse' OR name LIKE '%pulse%')`,
+			expectedSQL: `
+				(
+					EXISTS (
+						SELECT 1 FROM tag_relations tr
+						JOIN tag t ON t.id = tr.tag_id
+						WHERE tr.entity_type = 'dashboard' AND tr.entity_id = dashboard.id
+						AND LOWER(t.key) = LOWER(?)
+						AND t.value IN (?, ?, ?)
+					)
+					OR json_extract("dashboard"."data", '$.data.display.name') LIKE ?
+				)
+				AND (
+					EXISTS (
+						SELECT 1 FROM tag_relations tr
+						JOIN tag t ON t.id = tr.tag_id
+						WHERE tr.entity_type = 'dashboard' AND tr.entity_id = dashboard.id
+						AND LOWER(t.key) = LOWER(?)
+						AND t.value = ?
+					)
+					OR json_extract("dashboard"."data", '$.data.display.name') LIKE ?
+				)`,
+			expectedArgs: []any{"database", "sql", "redis", "mongo", "%database%", "team", "pulse", "%pulse%"},
+		},
+	})
+}
+
+func TestCompile_Rejections(t *testing.T) {
+	runCompileCases(t, []compileCase{
+		{
+			subtestName:              "rejects op outside per-reserved-key allowlist",
+			dslQueryToCompile:        `name BETWEEN 'a' AND 'z'`,
+			expectedErrShouldContain: "operator",
+		},
+		{
+			subtestName:              "rejects BETWEEN on a tag key",
+			dslQueryToCompile:        `team BETWEEN 'a' AND 'z'`,
+			expectedErrShouldContain: "operator",
+		},
+		{
+			subtestName:              "rejects non-bool on locked",
+			dslQueryToCompile:        `locked = 'yes'`,
+			expectedErrShouldContain: "boolean",
+		},
+		{
+			subtestName:              "rejects non-RFC3339 timestamp",
+			dslQueryToCompile:        `created_at >= 'not-a-date'`,
+			expectedErrShouldContain: "RFC3339",
+		},
+		{
+			subtestName:              "rejects REGEXP — not yet supported",
+			dslQueryToCompile:        `name REGEXP '.*'`,
+			expectedErrShouldContain: "REGEXP",
+		},
+		{
+			subtestName:              "rejects syntax error from grammar",
+			dslQueryToCompile:        `name = `,
+			expectedErrShouldContain: "syntax",
+		},
+	})
+}
+
+func formatter(t *testing.T) sqlstore.SQLFormatter {
+	t.Helper()
+	p := sqlstoretest.New(sqlstore.Config{Provider: "sqlite"}, sqlmock.QueryMatcherEqual)
+	return p.Formatter()
+}
+
+func normalizeSQL(s string) string {
+	s = strings.Join(strings.Fields(s), " ")
+	s = strings.ReplaceAll(s, "( ", "(")
+	s = strings.ReplaceAll(s, " )", ")")
+	return s
+}

pkg/types/dashboardtypes/listfilter/visitor.go

@@ -0,0 +1,590 @@
+package listfilter
+
+import (
+	"fmt"
+	"strings"
+	"time"
+
+	"github.com/SigNoz/signoz/pkg/parser/filterquery"
+	grammar "github.com/SigNoz/signoz/pkg/parser/filterquery/grammar"
+	"github.com/SigNoz/signoz/pkg/sqlstore"
+	"github.com/SigNoz/signoz/pkg/types/dashboardtypes"
+	qbtypesv5 "github.com/SigNoz/signoz/pkg/types/querybuildertypes/querybuildertypesv5"
+	"github.com/antlr4-go/antlr/v4"
+)
+
+// fragment is one composable WHERE fragment. sql uses `?` placeholders;
+// args lines up positionally with the placeholders.
+type fragment struct {
+	sql  string
+	args []any
+}
+
+func newFragment(sql string, args ...any) *fragment {
+	return &fragment{sql: sql, args: args}
+}
+
+type visitor struct {
+	grammar.BaseFilterQueryVisitor
+	formatter sqlstore.SQLFormatter
+	errors    []string
+}
+
+func newVisitor(formatter sqlstore.SQLFormatter) *visitor {
+	return &visitor{
+		formatter: formatter,
+	}
+}
+
+// Emitted WHERE fragment uses aliases `dashboard` and `pd` (public_dashboard).
+func (v *visitor) compile(query string) (*fragment, []string) {
+	tree, _, collector := filterquery.Parse(query)
+	if len(collector.Errors) > 0 {
+		return nil, collector.Errors
+	}
+	frag, _ := v.visit(tree).(*fragment)
+	return frag, nil
+}
+
+func (v *visitor) visit(tree antlr.ParseTree) any {
+	if tree == nil {
+		return nil
+	}
+	return tree.Accept(v)
+}
+
+// ════════════════════════════════════════════════════════════════════════
+// methods from grammar.BaseFilterQueryVisitor that are overridden
+// ════════════════════════════════════════════════════════════════════════
+
+func (v *visitor) VisitQuery(ctx *grammar.QueryContext) any {
+	return v.visit(ctx.Expression())
+}
+
+func (v *visitor) VisitExpression(ctx *grammar.ExpressionContext) any {
+	return v.visit(ctx.OrExpression())
+}
+
+func (v *visitor) VisitOrExpression(ctx *grammar.OrExpressionContext) any {
+	parts := ctx.AllAndExpression()
+	frags := make([]*fragment, 0, len(parts))
+	for _, p := range parts {
+		if f, ok := v.visit(p).(*fragment); ok && f != nil {
+			frags = append(frags, f)
+		}
+	}
+	return joinFragments(frags, "OR")
+}
+
+func (v *visitor) VisitAndExpression(ctx *grammar.AndExpressionContext) any {
+	parts := ctx.AllUnaryExpression()
+	frags := make([]*fragment, 0, len(parts))
+	for _, p := range parts {
+		if f, ok := v.visit(p).(*fragment); ok && f != nil {
+			frags = append(frags, f)
+		}
+	}
+	return joinFragments(frags, "AND")
+}
+
+func (v *visitor) VisitUnaryExpression(ctx *grammar.UnaryExpressionContext) any {
+	f, _ := v.visit(ctx.Primary()).(*fragment)
+	if f == nil {
+		return nil
+	}
+	if ctx.NOT() != nil {
+		return newFragment("NOT ("+f.sql+")", f.args...)
+	}
+	return f
+}
+
+func (v *visitor) VisitPrimary(ctx *grammar.PrimaryContext) any {
+	if ctx.OrExpression() != nil {
+		f, _ := v.visit(ctx.OrExpression()).(*fragment)
+		if f == nil {
+			return nil
+		}
+		return newFragment("("+f.sql+")", f.args...)
+	}
+	if ctx.Comparison() != nil {
+		return v.visit(ctx.Comparison())
+	}
+	// Bare keys, values, full text, and function calls are not part of the
+	// dashboard list DSL.
+	v.addErr("unsupported expression %q — every term must be of the form `key OP value`", ctx.GetText())
+	return nil
+}
+
+// VisitComparison dispatches a single `key OP value` term. A key that matches
+// a reserved DSL key (name, description, etc.) becomes a column-level
+// predicate; any other identifier is treated as a tag key — the operator
+// applies to the tag's value, with a case-insensitive match on the tag's key.
+func (v *visitor) VisitComparison(ctx *grammar.ComparisonContext) any {
+	key, ok := v.parseKey(ctx)
+	if !ok {
+		return nil
+	}
+
+	op, ok := v.opFromContext(ctx)
+	if !ok {
+		return nil
+	}
+
+	if reservedOpSet, isReserved := reservedOps[dashboardtypes.DSLKey(key)]; isReserved {
+		if _, allowed := reservedOpSet[op]; !allowed {
+			v.addErr("operator %s is not allowed for key %q", opName(op), key)
+			return nil
+		}
+		switch dashboardtypes.DSLKey(key) {
+		case dashboardtypes.DSLKeyName:
+			return v.emitJSONStringComparison(ctx, op, "$.data.display.name")
+		case dashboardtypes.DSLKeyDescription:
+			return v.emitJSONStringComparison(ctx, op, "$.data.display.description")
+		case dashboardtypes.DSLKeyCreatedAt:
+			return v.emitTimestampComparison(ctx, op, "dashboard.created_at")
+		case dashboardtypes.DSLKeyUpdatedAt:
+			return v.emitTimestampComparison(ctx, op, "dashboard.updated_at")
+		case dashboardtypes.DSLKeyCreatedBy:
+			return v.emitStringComparison(ctx, op, "dashboard.created_by")
+		case dashboardtypes.DSLKeyLocked:
+			return v.emitBoolComparison(ctx, op, "dashboard.locked")
+		case dashboardtypes.DSLKeyPublic:
+			return v.emitPublicComparison(ctx, op)
+		}
+	}
+
+	if _, allowed := tagKeyOps[op]; !allowed {
+		v.addErr("operator %s is not allowed on a tag-key filter", opName(op))
+		return nil
+	}
+	return v.emitTagComparison(ctx, op, key)
+}
+
+func (v *visitor) parseKey(ctx *grammar.ComparisonContext) (string, bool) {
+	keyText := strings.ToLower(strings.TrimSpace(ctx.Key().GetText()))
+	if keyText == "" {
+		v.addErr("filter key cannot be empty")
+		return "", false
+	}
+	return keyText, true
+}
+
+func (v *visitor) opFromContext(ctx *grammar.ComparisonContext) (qbtypesv5.FilterOperator, bool) {
+	switch {
+	case ctx.EQUALS() != nil:
+		return qbtypesv5.FilterOperatorEqual, true
+	case ctx.NOT_EQUALS() != nil, ctx.NEQ() != nil:
+		return qbtypesv5.FilterOperatorNotEqual, true
+	case ctx.LT() != nil:
+		return qbtypesv5.FilterOperatorLessThan, true
+	case ctx.LE() != nil:
+		return qbtypesv5.FilterOperatorLessThanOrEq, true
+	case ctx.GT() != nil:
+		return qbtypesv5.FilterOperatorGreaterThan, true
+	case ctx.GE() != nil:
+		return qbtypesv5.FilterOperatorGreaterThanOrEq, true
+	case ctx.BETWEEN() != nil:
+		if ctx.NOT() != nil {
+			return qbtypesv5.FilterOperatorNotBetween, true
+		}
+		return qbtypesv5.FilterOperatorBetween, true
+	case ctx.LIKE() != nil:
+		if ctx.NOT() != nil {
+			return qbtypesv5.FilterOperatorNotLike, true
+		}
+		return qbtypesv5.FilterOperatorLike, true
+	case ctx.ILIKE() != nil:
+		if ctx.NOT() != nil {
+			return qbtypesv5.FilterOperatorNotILike, true
+		}
+		return qbtypesv5.FilterOperatorILike, true
+	case ctx.CONTAINS() != nil:
+		if ctx.NOT() != nil {
+			return qbtypesv5.FilterOperatorNotContains, true
+		}
+		return qbtypesv5.FilterOperatorContains, true
+	case ctx.REGEXP() != nil:
+		if ctx.NOT() != nil {
+			return qbtypesv5.FilterOperatorNotRegexp, true
+		}
+		return qbtypesv5.FilterOperatorRegexp, true
+	case ctx.InClause() != nil:
+		return qbtypesv5.FilterOperatorIn, true
+	case ctx.NotInClause() != nil:
+		return qbtypesv5.FilterOperatorNotIn, true
+	case ctx.EXISTS() != nil:
+		if ctx.NOT() != nil {
+			return qbtypesv5.FilterOperatorNotExists, true
+		}
+		return qbtypesv5.FilterOperatorExists, true
+	}
+	v.addErr("could not determine operator in expression %q", ctx.GetText())
+	return qbtypesv5.FilterOperatorUnknown, false
+}
+
+// ─── per-key emitters ────────────────────────────────────────────────────────
+
+func (v *visitor) emitJSONStringComparison(ctx *grammar.ComparisonContext, op qbtypesv5.FilterOperator, jsonPath string) *fragment {
+	colExpr := string(v.formatter.JSONExtractString("dashboard.data", jsonPath))
+	return v.emitStringOp(ctx, op, colExpr, string(dashboardtypes.DSLKeyName))
+}
+
+func (v *visitor) emitStringComparison(ctx *grammar.ComparisonContext, op qbtypesv5.FilterOperator, colExpr string) *fragment {
+	return v.emitStringOp(ctx, op, colExpr, string(dashboardtypes.DSLKeyCreatedBy))
+}
+
+// emitStringOp covers all the operators the spec allows on text-shaped keys
+// (name, description, created_by). Tag uses a separate emitter that wraps each
+// produced fragment in an EXISTS subquery.
+func (v *visitor) emitStringOp(ctx *grammar.ComparisonContext, op qbtypesv5.FilterOperator, colExpr, keyForErr string) *fragment {
+	switch op {
+	case qbtypesv5.FilterOperatorEqual, qbtypesv5.FilterOperatorNotEqual,
+		qbtypesv5.FilterOperatorLike, qbtypesv5.FilterOperatorNotLike:
+		val, ok := v.singleString(ctx, keyForErr)
+		if !ok {
+			return nil
+		}
+		return newFragment(colExpr+" "+opName(op)+" ?", val)
+	case qbtypesv5.FilterOperatorILike, qbtypesv5.FilterOperatorNotILike:
+		val, ok := v.singleString(ctx, keyForErr)
+		if !ok {
+			return nil
+		}
+		// SQLite has no ILIKE keyword and Postgres LIKE is case-sensitive — emit
+		// LOWER(col) LIKE LOWER(?) so behavior is identical on both dialects.
+		lowerCol := string(v.formatter.LowerExpression(colExpr))
+		return newFragment(lowerCol+" "+opName(iLikeToLike(op))+" LOWER(?)", val)
+	case qbtypesv5.FilterOperatorContains, qbtypesv5.FilterOperatorNotContains:
+		val, ok := v.singleString(ctx, keyForErr)
+		if !ok {
+			return nil
+		}
+		return newFragment(colExpr+" "+opName(containsToLike(op))+" ?", "%"+escapeLike(val)+"%")
+	case qbtypesv5.FilterOperatorRegexp, qbtypesv5.FilterOperatorNotRegexp:
+		v.addErr("REGEXP filtering on %q is not yet supported", keyForErr)
+		return nil
+	case qbtypesv5.FilterOperatorIn, qbtypesv5.FilterOperatorNotIn:
+		vals, ok := v.stringList(ctx, keyForErr)
+		if !ok {
+			return nil
+		}
+		return inFragment(colExpr, op, vals)
+	}
+	v.addErr("operator %s on %q is not implemented", opName(op), keyForErr)
+	return nil
+}
+
+func (v *visitor) emitTimestampComparison(ctx *grammar.ComparisonContext, op qbtypesv5.FilterOperator, colExpr string) *fragment {
+	switch op {
+	case qbtypesv5.FilterOperatorEqual, qbtypesv5.FilterOperatorNotEqual,
+		qbtypesv5.FilterOperatorLessThan, qbtypesv5.FilterOperatorLessThanOrEq,
+		qbtypesv5.FilterOperatorGreaterThan, qbtypesv5.FilterOperatorGreaterThanOrEq:
+		t, ok := v.singleTimestamp(ctx)
+		if !ok {
+			return nil
+		}
+		return newFragment(colExpr+" "+opName(op)+" ?", t)
+	case qbtypesv5.FilterOperatorBetween, qbtypesv5.FilterOperatorNotBetween:
+		ts, ok := v.twoTimestamps(ctx)
+		if !ok {
+			return nil
+		}
+		return newFragment(colExpr+" "+opName(op)+" ? AND ?", ts[0], ts[1])
+	}
+	v.addErr("operator %s on timestamp is not implemented", opName(op))
+	return nil
+}
+
+func (v *visitor) emitBoolComparison(ctx *grammar.ComparisonContext, op qbtypesv5.FilterOperator, colExpr string) *fragment {
+	b, ok := v.singleBool(ctx)
+	if !ok {
+		return nil
+	}
+	return newFragment(colExpr+" "+opName(op)+" ?", b)
+}
+
+// emitPublicComparison renders `public = true|false` against the LEFT-joined
+// public_dashboard alias `pd`. The spec says public is a virtual column whose
+// truthiness is the existence of a row in public_dashboard.
+func (v *visitor) emitPublicComparison(ctx *grammar.ComparisonContext, op qbtypesv5.FilterOperator) *fragment {
+	b, ok := v.singleBool(ctx)
+	if !ok {
+		return nil
+	}
+	want := b
+	if op == qbtypesv5.FilterOperatorNotEqual {
+		want = !b
+	}
+	if want {
+		return newFragment("pd.id IS NOT NULL")
+	}
+	return newFragment("pd.id IS NULL")
+}
+
+const tagSubqueryPrefix = "SELECT 1 FROM tag_relations tr JOIN tag t ON t.id = tr.tag_id " +
+	"WHERE tr.entity_type = 'dashboard' AND tr.entity_id = dashboard.id " +
+	"AND LOWER(t.key) = LOWER(?)"
+
+// emitTagComparison wraps the inner predicate in EXISTS (or NOT EXISTS for the
+// negated operators). The inner predicate matches the tag's key
+// case-insensitively and applies the user's operator to the tag's value.
+// EXISTS / NOT EXISTS skip the value predicate — they assert the existence
+// (or absence) of any tag with the given key.
+func (v *visitor) emitTagComparison(ctx *grammar.ComparisonContext, op qbtypesv5.FilterOperator, key string) *fragment {
+	if op == qbtypesv5.FilterOperatorExists || op == qbtypesv5.FilterOperatorNotExists {
+		wrapper := "EXISTS"
+		if op == qbtypesv5.FilterOperatorNotExists {
+			wrapper = "NOT EXISTS"
+		}
+		return newFragment(wrapper+" ("+tagSubqueryPrefix+")", key)
+	}
+
+	// All other tag operators take the positive form of the value predicate
+	// and toggle the EXISTS wrapper for negation. Inverse() flips Not<X> → <X>.
+	negated := op.IsNegativeOperator()
+	posOp := op
+	if negated {
+		posOp = op.Inverse()
+	}
+	inner := v.emitStringOp(ctx, posOp, "t.value", key)
+	if inner == nil {
+		return nil
+	}
+	wrapper := "EXISTS"
+	if negated {
+		wrapper = "NOT EXISTS"
+	}
+	args := append([]any{key}, inner.args...)
+	return newFragment(wrapper+" ("+tagSubqueryPrefix+" AND "+inner.sql+")", args...)
+}
+
+// ─── value extraction helpers ───────────────────────────────────────────────
+
+func (v *visitor) addErr(format string, args ...any) {
+	v.errors = append(v.errors, fmt.Sprintf(format, args...))
+}
+
+func (v *visitor) singleString(ctx *grammar.ComparisonContext, keyForErr string) (string, bool) {
+	values := ctx.AllValue()
+	if len(values) != 1 {
+		v.addErr("expected exactly one value for %q", keyForErr)
+		return "", false
+	}
+	return v.stringValue(values[0], keyForErr)
+}
+
+func (v *visitor) singleBool(ctx *grammar.ComparisonContext) (bool, bool) {
+	values := ctx.AllValue()
+	if len(values) != 1 {
+		v.addErr("expected a single boolean (true/false)")
+		return false, false
+	}
+	return v.boolValue(values[0])
+}
+
+func (v *visitor) singleTimestamp(ctx *grammar.ComparisonContext) (time.Time, bool) {
+	values := ctx.AllValue()
+	if len(values) != 1 {
+		v.addErr("expected a single RFC3339 timestamp")
+		return time.Time{}, false
+	}
+	return v.timestampValue(values[0])
+}
+
+func (v *visitor) twoTimestamps(ctx *grammar.ComparisonContext) ([2]time.Time, bool) {
+	values := ctx.AllValue()
+	if len(values) != 2 {
+		v.addErr("BETWEEN expects two RFC3339 timestamps")
+		return [2]time.Time{}, false
+	}
+	a, ok1 := v.timestampValue(values[0])
+	b, ok2 := v.timestampValue(values[1])
+	if !ok1 || !ok2 {
+		return [2]time.Time{}, false
+	}
+	return [2]time.Time{a, b}, true
+}
+
+func (v *visitor) stringList(ctx *grammar.ComparisonContext, keyForErr string) ([]string, bool) {
+	var valuesCtx []grammar.IValueContext
+	switch {
+	case ctx.InClause() != nil:
+		ic := ctx.InClause()
+		if ic.ValueList() != nil {
+			valuesCtx = ic.ValueList().AllValue()
+		} else {
+			valuesCtx = []grammar.IValueContext{ic.Value()}
+		}
+	case ctx.NotInClause() != nil:
+		nc := ctx.NotInClause()
+		if nc.ValueList() != nil {
+			valuesCtx = nc.ValueList().AllValue()
+		} else {
+			valuesCtx = []grammar.IValueContext{nc.Value()}
+		}
+	default:
+		v.addErr("IN clause is missing for %q", keyForErr)
+		return nil, false
+	}
+	if len(valuesCtx) == 0 {
+		v.addErr("IN list for %q is empty", keyForErr)
+		return nil, false
+	}
+	out := make([]string, 0, len(valuesCtx))
+	for _, vc := range valuesCtx {
+		s, ok := v.stringValue(vc, keyForErr)
+		if !ok {
+			return nil, false
+		}
+		out = append(out, s)
+	}
+	return out, true
+}
+
+func (v *visitor) stringValue(ctx grammar.IValueContext, keyForErr string) (string, bool) {
+	if ctx.QUOTED_TEXT() != nil {
+		return trimQuotes(ctx.QUOTED_TEXT().GetText()), true
+	}
+	if ctx.KEY() != nil {
+		// Bare tokens are accepted as strings, mirroring the FilterQuery lexer's
+		// treatment of unquoted identifiers on the value side.
+		return ctx.KEY().GetText(), true
+	}
+	v.addErr("expected a string value for %q, got %q", keyForErr, ctx.GetText())
+	return "", false
+}
+
+func (v *visitor) boolValue(ctx grammar.IValueContext) (bool, bool) {
+	if ctx.BOOL() == nil {
+		v.addErr("expected a boolean (true/false), got %q", ctx.GetText())
+		return false, false
+	}
+	return strings.EqualFold(ctx.BOOL().GetText(), "true"), true
+}
+
+func (v *visitor) timestampValue(ctx grammar.IValueContext) (time.Time, bool) {
+	if ctx.QUOTED_TEXT() == nil {
+		v.addErr("expected an RFC3339 timestamp string, got %q", ctx.GetText())
+		return time.Time{}, false
+	}
+	raw := trimQuotes(ctx.QUOTED_TEXT().GetText())
+	t, err := time.Parse(time.RFC3339, raw)
+	if err != nil {
+		v.addErr("invalid RFC3339 timestamp %q: %s", raw, err.Error())
+		return time.Time{}, false
+	}
+	return t, true
+}
+
+// ─── fragment helpers ────────────────────────────────────────────────────────
+
+func joinFragments(frags []*fragment, conn string) *fragment {
+	if len(frags) == 0 {
+		return nil
+	}
+	if len(frags) == 1 {
+		return frags[0]
+	}
+	parts := make([]string, len(frags))
+	args := make([]any, 0)
+	for i, f := range frags {
+		parts[i] = f.sql
+		args = append(args, f.args...)
+	}
+	return newFragment(strings.Join(parts, " "+conn+" "), args...)
+}
+
+func inFragment(colExpr string, op qbtypesv5.FilterOperator, vals []string) *fragment {
+	placeholders := strings.Repeat("?, ", len(vals))
+	placeholders = placeholders[:len(placeholders)-2]
+	args := make([]any, len(vals))
+	for i, s := range vals {
+		args[i] = s
+	}
+	return newFragment(colExpr+" "+opName(op)+" ("+placeholders+")", args...)
+}
+
+// opName returns the user-facing spelling of a FilterOperator. For the
+// operators we emit directly into SQL (=, !=, <, LIKE, IN, BETWEEN, …) the
+// spelling doubles as the SQL keyword. For the operators we don't emit
+// directly (ILIKE, CONTAINS, REGEXP, EXISTS, NOT EXISTS) it's only used in
+// error messages.
+func opName(op qbtypesv5.FilterOperator) string {
+	switch op {
+	case qbtypesv5.FilterOperatorEqual:
+		return "="
+	case qbtypesv5.FilterOperatorNotEqual:
+		return "!="
+	case qbtypesv5.FilterOperatorLessThan:
+		return "<"
+	case qbtypesv5.FilterOperatorLessThanOrEq:
+		return "<="
+	case qbtypesv5.FilterOperatorGreaterThan:
+		return ">"
+	case qbtypesv5.FilterOperatorGreaterThanOrEq:
+		return ">="
+	case qbtypesv5.FilterOperatorBetween:
+		return "BETWEEN"
+	case qbtypesv5.FilterOperatorNotBetween:
+		return "NOT BETWEEN"
+	case qbtypesv5.FilterOperatorLike:
+		return "LIKE"
+	case qbtypesv5.FilterOperatorNotLike:
+		return "NOT LIKE"
+	case qbtypesv5.FilterOperatorILike:
+		return "ILIKE"
+	case qbtypesv5.FilterOperatorNotILike:
+		return "NOT ILIKE"
+	case qbtypesv5.FilterOperatorContains:
+		return "CONTAINS"
+	case qbtypesv5.FilterOperatorNotContains:
+		return "NOT CONTAINS"
+	case qbtypesv5.FilterOperatorRegexp:
+		return "REGEXP"
+	case qbtypesv5.FilterOperatorNotRegexp:
+		return "NOT REGEXP"
+	case qbtypesv5.FilterOperatorIn:
+		return "IN"
+	case qbtypesv5.FilterOperatorNotIn:
+		return "NOT IN"
+	case qbtypesv5.FilterOperatorExists:
+		return "EXISTS"
+	case qbtypesv5.FilterOperatorNotExists:
+		return "NOT EXISTS"
+	}
+	return "?"
+}
+
+// iLikeToLike maps ILIKE → LIKE for the LOWER(col) LIKE LOWER(?) emission.
+func iLikeToLike(op qbtypesv5.FilterOperator) qbtypesv5.FilterOperator {
+	if op == qbtypesv5.FilterOperatorNotILike {
+		return qbtypesv5.FilterOperatorNotLike
+	}
+	return qbtypesv5.FilterOperatorLike
+}
+
+// containsToLike maps CONTAINS → LIKE for the LIKE '%val%' emission.
+func containsToLike(op qbtypesv5.FilterOperator) qbtypesv5.FilterOperator {
+	if op == qbtypesv5.FilterOperatorNotContains {
+		return qbtypesv5.FilterOperatorNotLike
+	}
+	return qbtypesv5.FilterOperatorLike
+}
+
+// escapeLike escapes the LIKE meta-characters % and _ in user input so that a
+// CONTAINS query of `50%` doesn't match every value containing `50`.
+func escapeLike(s string) string {
+	r := strings.NewReplacer(`\`, `\\`, `%`, `\%`, `_`, `\_`)
+	return r.Replace(s)
+}
+
+func trimQuotes(s string) string {
+	if len(s) >= 2 {
+		if (s[0] == '"' && s[len(s)-1] == '"') || (s[0] == '\'' && s[len(s)-1] == '\'') {
+			s = s[1 : len(s)-1]
+		}
+	}
+	s = strings.ReplaceAll(s, `\\`, `\`)
+	s = strings.ReplaceAll(s, `\'`, `'`)
+	return s
+}

pkg/types/dashboardtypes/perses_dashboard.go

@@ -0,0 +1,356 @@
+package dashboardtypes
+
+import (
+	"bytes"
+	"encoding/json"
+	"strings"
+	"time"
+
+	"github.com/SigNoz/signoz/pkg/errors"
+	"github.com/SigNoz/signoz/pkg/types"
+	"github.com/SigNoz/signoz/pkg/types/tagtypes"
+	"github.com/SigNoz/signoz/pkg/valuer"
+	"github.com/swaggest/jsonschema-go"
+	jsonpatch "gopkg.in/evanphx/json-patch.v4"
+)
+
+const (
+	SchemaVersion       = "v6"
+	MaxTagsPerDashboard = 5
+)
+
+type DSLKey string
+
+const (
+	DSLKeyName        DSLKey = "name"
+	DSLKeyDescription DSLKey = "description"
+	DSLKeyCreatedAt   DSLKey = "created_at"
+	DSLKeyUpdatedAt   DSLKey = "updated_at"
+	DSLKeyCreatedBy   DSLKey = "created_by"
+	DSLKeyLocked      DSLKey = "locked"
+	DSLKeyPublic      DSLKey = "public"
+)
+
+// reservedDSLKeys are dashboard column-level filter names in the list-query DSL.
+// A tag whose key collides with one of these would make the DSL ambiguous, so
+// they're rejected (case-insensitively) at write time.
+var reservedDSLKeys = map[DSLKey]struct{}{
+	DSLKeyName:        {},
+	DSLKeyDescription: {},
+	DSLKeyCreatedAt:   {},
+	DSLKeyUpdatedAt:   {},
+	DSLKeyCreatedBy:   {},
+	DSLKeyLocked:      {},
+	DSLKeyPublic:      {},
+}
+
+type DashboardV2 struct {
+	types.Identifiable
+	types.TimeAuditable
+	types.UserAuditable
+
+	OrgID        valuer.UUID      `json:"orgId"`
+	Locked       bool             `json:"locked"`
+	Info         DashboardInfo    `json:"info"`
+	PublicConfig *PublicDashboard `json:"publicConfig,omitempty"`
+}
+
+// DashboardInfo is the serializable view of a dashboard's contents — what the UI renders as "the dashboard JSON".
+type DashboardInfo struct {
+	StoredDashboardInfo
+	Tags []*tagtypes.Tag `json:"tags,omitempty"`
+}
+
+// StoredDashboardInfo is exactly what serializes into the dashboard.data column.
+type StoredDashboardInfo struct {
+	Metadata DashboardMetadata `json:"metadata"`
+	Data     DashboardData     `json:"data"`
+}
+
+type DashboardMetadata struct {
+	SchemaVersion   string `json:"schemaVersion"`
+	Image           string `json:"image,omitempty"`
+	UploadedGrafana bool   `json:"uploadedGrafana"`
+}
+
+type PostableDashboardV2 struct {
+	StoredDashboardInfo
+	Tags []tagtypes.PostableTag `json:"tags,omitempty"`
+}
+
+type UpdateableDashboardV2 = PostableDashboardV2
+
+// PatchableDashboardV2 is an RFC 6902 JSON Patch document applied against a
+// PostableDashboardV2-shaped view of an existing dashboard. Patch ops can
+// target any field — including individual entries inside `data.panels`,
+// `data.panels.<id>.spec.queries`, or `tags` — without re-sending the rest of
+// the dashboard.
+type PatchableDashboardV2 struct {
+	patch jsonpatch.Patch
+}
+
+// JSONPatchDocument is the OpenAPI-facing schema for an RFC 6902 patch body.
+// PatchableDashboardV2 has only an internal `jsonpatch.Patch` field, so the
+// reflector would emit an empty schema; the handler def points at this type
+// instead so consumers see the array-of-ops shape.
+type JSONPatchDocument []JSONPatchOperation
+
+// JSONPatchOperation is one RFC 6902 op. Not every field is valid on every
+// op kind (e.g. `value` is required for add/replace/test, ignored for remove;
+// `from` is required for move/copy) — the JSON Patch RFC governs that.
+type JSONPatchOperation struct {
+	Op    string `json:"op" required:"true"`
+	Path  string `json:"path" required:"true" description:"JSON Pointer (RFC 6901) into the dashboard's postable shape — e.g. /data/display/name, /data/panels/<id>, /data/panels/<id>/spec/queries/0, /tags/-."`
+	Value any    `json:"value,omitempty" description:"Value to add/replace/test against. The expected type depends on the path. Common shapes (see referenced schemas for the exact field set): /data/panels/<id> takes a DashboardtypesPanel; /data/panels/<id>/spec/queries/N (or /-) takes a DashboardtypesQuery; /data/variables/N takes a DashboardtypesVariable; /data/layouts/N takes a DashboardtypesLayout; /tags/N (or /-) takes a TagtypesPostableTag; /data/display/name and other leaf string fields take a string. Required for add/replace/test; ignored for remove/move/copy."`
+	From  string `json:"from,omitempty" description:"Source JSON Pointer for move/copy ops; ignored for other ops."`
+}
+
+// PrepareJSONSchema constrains the `op` field to the six RFC 6902 verbs.
+func (JSONPatchOperation) PrepareJSONSchema(s *jsonschema.Schema) error {
+	op, ok := s.Properties["op"]
+	if !ok || op.TypeObject == nil {
+		return errors.NewInternalf(errors.CodeInternal, "JSONPatchOperation schema missing `op` property")
+	}
+	op.TypeObject.WithEnum("add", "remove", "replace", "move", "copy", "test")
+	s.Properties["op"] = op
+	return nil
+}
+
+func (p *PatchableDashboardV2) UnmarshalJSON(data []byte) error {
+	patch, err := jsonpatch.DecodePatch(data)
+	if err != nil {
+		return errors.WrapInvalidInputf(err, ErrCodeDashboardInvalidInput, "%s", err.Error())
+	}
+	p.patch = patch
+	return nil
+}
+
+// patchableDashboardV2View is the JSON shape a patch is applied against.
+// It mirrors PostableDashboardV2 except `tags` is always emitted (even when
+// empty) — RFC 6902 `add /tags/-` requires the array to exist in the target
+// document, and PostableDashboardV2's own `omitempty` on tags would drop it.
+type patchableDashboardV2View struct {
+	StoredDashboardInfo
+	Tags []tagtypes.PostableTag `json:"tags"`
+}
+
+// Apply runs the patch against the existing dashboard. The dashboard is
+// projected into the postable JSON shape, the patch is applied, and the
+// result is decoded back into an UpdateableDashboardV2 — which re-runs
+// the full v2 validation chain.
+func (p PatchableDashboardV2) Apply(existing *DashboardV2) (*UpdateableDashboardV2, error) {
+	base := patchableDashboardV2View{
+		StoredDashboardInfo: existing.Info.StoredDashboardInfo,
+		Tags:                tagtypes.NewPostableTagsFromTags(existing.Info.Tags),
+	}
+	raw, err := json.Marshal(base)
+	if err != nil {
+		return nil, errors.WrapInternalf(err, errors.CodeInternal, "marshal existing dashboard for patch")
+	}
+	patched, err := p.patch.Apply(raw)
+	if err != nil {
+		return nil, errors.WrapInvalidInputf(err, ErrCodeDashboardInvalidInput, "%s", err.Error())
+	}
+	out := &UpdateableDashboardV2{}
+	if err := json.Unmarshal(patched, out); err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (p *PostableDashboardV2) UnmarshalJSON(data []byte) error {
+	dec := json.NewDecoder(bytes.NewReader(data))
+	dec.DisallowUnknownFields()
+	type alias PostableDashboardV2
+	var tmp alias
+	if err := dec.Decode(&tmp); err != nil {
+		return errors.WrapInvalidInputf(err, ErrCodeDashboardInvalidInput, "%s", err.Error())
+	}
+	*p = PostableDashboardV2(tmp)
+	return p.Validate()
+}
+
+func (p *PostableDashboardV2) Validate() error {
+	if p.Metadata.SchemaVersion != SchemaVersion {
+		return errors.NewInvalidInputf(ErrCodeDashboardInvalidInput, "metadata.schemaVersion must be %q, got %q", SchemaVersion, p.Metadata.SchemaVersion)
+	}
+	if p.Data.Display == nil || p.Data.Display.Name == "" {
+		return errors.NewInvalidInputf(ErrCodeDashboardInvalidInput, "data.display.name is required")
+	}
+	if err := p.validateTags(); err != nil {
+		return err
+	}
+	return p.Data.Validate()
+}
+
+func (p *PostableDashboardV2) validateTags() error {
+	if len(p.Tags) > MaxTagsPerDashboard {
+		return errors.NewInvalidInputf(ErrCodeDashboardInvalidInput, "a dashboard can have at most %d tags", MaxTagsPerDashboard)
+	}
+	for _, tag := range p.Tags {
+		if _, reserved := reservedDSLKeys[DSLKey(strings.ToLower(strings.TrimSpace(tag.Key)))]; reserved {
+			return errors.NewInvalidInputf(ErrCodeDashboardInvalidInput, "tag key %q is reserved", tag.Key)
+		}
+	}
+	return nil
+}
+
+type GettableDashboardV2 struct {
+	types.Identifiable
+	types.TimeAuditable
+	types.UserAuditable
+
+	OrgID        valuer.UUID               `json:"orgId"`
+	Locked       bool                      `json:"locked"`
+	Info         GettableDashboardInfo     `json:"info"`
+	PublicConfig *GettablePublicDasbhboard `json:"publicConfig,omitempty"`
+}
+
+type GettableDashboardInfo struct {
+	StoredDashboardInfo
+	Tags []*tagtypes.GettableTag `json:"tags,omitempty"`
+}
+
+func NewGettableDashboardV2FromDashboardV2(dashboard *DashboardV2) *GettableDashboardV2 {
+	gettable := &GettableDashboardV2{
+		Identifiable:  dashboard.Identifiable,
+		TimeAuditable: dashboard.TimeAuditable,
+		UserAuditable: dashboard.UserAuditable,
+		OrgID:         dashboard.OrgID,
+		Locked:        dashboard.Locked,
+		Info: GettableDashboardInfo{
+			StoredDashboardInfo: dashboard.Info.StoredDashboardInfo,
+			Tags:                tagtypes.NewGettableTagsFromTags(dashboard.Info.Tags),
+		},
+	}
+	if dashboard.PublicConfig != nil {
+		gettable.PublicConfig = NewGettablePublicDashboard(dashboard.PublicConfig)
+	}
+	return gettable
+}
+
+func NewDashboardV2(orgID valuer.UUID, createdBy string, postable PostableDashboardV2, resolvedTags []*tagtypes.Tag) *DashboardV2 {
+	now := time.Now()
+
+	return &DashboardV2{
+		Identifiable:  types.Identifiable{ID: valuer.GenerateUUID()},
+		TimeAuditable: types.TimeAuditable{CreatedAt: now, UpdatedAt: now},
+		UserAuditable: types.UserAuditable{CreatedBy: createdBy, UpdatedBy: createdBy},
+		OrgID:         orgID,
+		Locked:        false,
+		Info: DashboardInfo{
+			StoredDashboardInfo: StoredDashboardInfo{
+				Metadata: postable.Metadata,
+				Data:     postable.Data,
+			},
+			Tags: resolvedTags,
+		},
+	}
+}
+
+// rejects rows that don't carry a v2-shape blob — those are pre-migration v1 dashboards that the v2 API can't render.
+func NewDashboardV2FromStorable(storable *StorableDashboard, public *StorablePublicDashboard, tags []*tagtypes.Tag) (*DashboardV2, error) {
+	metadata, _ := storable.Data["metadata"].(map[string]any)
+	if metadata == nil || metadata["schemaVersion"] != SchemaVersion {
+		return nil, errors.Newf(errors.TypeUnsupported, ErrCodeDashboardInvalidData, "dashboard %s is not in %s schema", storable.ID, SchemaVersion)
+	}
+
+	raw, err := json.Marshal(storable.Data)
+	if err != nil {
+		return nil, errors.WrapInternalf(err, errors.CodeInternal, "marshal stored v2 dashboard data")
+	}
+	var stored StoredDashboardInfo
+	if err := json.Unmarshal(raw, &stored); err != nil {
+		return nil, errors.WrapInternalf(err, errors.CodeInternal, "unmarshal stored v2 dashboard data")
+	}
+
+	var publicConfig *PublicDashboard
+	if public != nil {
+		publicConfig = NewPublicDashboardFromStorablePublicDashboard(public)
+	}
+
+	return &DashboardV2{
+		Identifiable:  storable.Identifiable,
+		TimeAuditable: storable.TimeAuditable,
+		UserAuditable: storable.UserAuditable,
+		OrgID:         storable.OrgID,
+		Locked:        storable.Locked,
+		Info: DashboardInfo{
+			StoredDashboardInfo: stored,
+			Tags:                tags,
+		},
+		PublicConfig: publicConfig,
+	}, nil
+}
+
+func (d *DashboardV2) CanLockUnlock(lock bool, isAdmin bool, updatedBy string) error {
+	if d.CreatedBy != updatedBy && !isAdmin {
+		return errors.Newf(errors.TypeForbidden, errors.CodeForbidden, "you are not authorized to lock/unlock this dashboard")
+	}
+	if d.Locked == lock {
+		if lock {
+			return errors.Newf(errors.TypeAlreadyExists, errors.CodeAlreadyExists, "dashboard is already locked")
+		}
+		return errors.Newf(errors.TypeAlreadyExists, errors.CodeAlreadyExists, "dashboard is already unlocked")
+	}
+	return nil
+}
+
+func (d *DashboardV2) LockUnlock(lock bool, isAdmin bool, updatedBy string) error {
+	if err := d.CanLockUnlock(lock, isAdmin, updatedBy); err != nil {
+		return err
+	}
+	d.Locked = lock
+	d.UpdatedBy = updatedBy
+	d.UpdatedAt = time.Now()
+	return nil
+}
+
+func (d *DashboardV2) CanUpdate() error {
+	if d.Locked {
+		return errors.Newf(errors.TypeInvalidInput, errors.CodeInvalidInput, "cannot update a locked dashboard, please unlock the dashboard to update")
+	}
+	return nil
+}
+
+func (d *DashboardV2) Update(updateable UpdateableDashboardV2, updatedBy string, resolvedTags []*tagtypes.Tag) error {
+	if err := d.CanUpdate(); err != nil {
+		return err
+	}
+	d.Info.Metadata = updateable.Metadata
+	d.Info.Data = updateable.Data
+	d.Info.Tags = resolvedTags
+	d.UpdatedBy = updatedBy
+	d.UpdatedAt = time.Now()
+	return nil
+}
+
+// ToStorableDashboard packages a Dashboard into the bun row that goes into
+// the dashboard table. Tags are intentionally omitted — they live in
+// tag_relations and are inserted separately by the caller.
+func (d *DashboardV2) ToStorableDashboard() (*StorableDashboard, error) {
+	data, err := d.Info.toStorableDashboardData()
+	if err != nil {
+		return nil, err
+	}
+	return &StorableDashboard{
+		Identifiable:  types.Identifiable{ID: d.ID},
+		TimeAuditable: d.TimeAuditable,
+		UserAuditable: d.UserAuditable,
+		OrgID:         d.OrgID,
+		Locked:        d.Locked,
+		Data:          data,
+	}, nil
+}
+
+func (s StoredDashboardInfo) toStorableDashboardData() (StorableDashboardData, error) {
+	raw, err := json.Marshal(s)
+	if err != nil {
+		return nil, errors.WrapInternalf(err, errors.CodeInternal, "marshal v2 dashboard data")
+	}
+	out := StorableDashboardData{}
+	if err := json.Unmarshal(raw, &out); err != nil {
+		return nil, errors.WrapInternalf(err, errors.CodeInternal, "unmarshal v2 dashboard data")
+	}
+	return out, nil
+}

pkg/types/dashboardtypes/perses_dashboard_patch_test.go

@@ -0,0 +1,552 @@
+package dashboardtypes
+
+import (
+	"encoding/json"
+	"strings"
+	"testing"
+
+	"github.com/SigNoz/signoz/pkg/types/tagtypes"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+// basePostableJSON is the postable shape of a small but realistic v2
+// dashboard used as the base document for patch tests. Each panel carries
+// one builder query in the same shape production dashboards use
+// (aggregations, filter, groupBy populated), and the dashboard has one
+// variable — the variable is not patched in any test here, that's
+// covered in a separate variable-focused suite.
+const basePostableJSON = `{
+	"metadata": {"schemaVersion": "v6"},
+	"data": {
+		"display": {"name": "Service overview"},
+		"variables": [
+			{
+				"kind": "ListVariable",
+				"spec": {
+					"name": "service",
+					"allowAllValue": true,
+					"allowMultiple": false,
+					"plugin": {
+						"kind": "signoz/DynamicVariable",
+						"spec": {"name": "service.name", "signal": "metrics"}
+					}
+				}
+			}
+		],
+		"panels": {
+			"p1": {
+				"kind": "Panel",
+				"spec": {
+					"plugin": {"kind": "signoz/TimeSeriesPanel", "spec": {}},
+					"queries": [
+						{
+							"kind": "TimeSeriesQuery",
+							"spec": {"plugin": {"kind": "signoz/BuilderQuery", "spec": {
+								"name": "A",
+								"signal": "metrics",
+								"aggregations": [{
+									"metricName": "signoz_calls_total",
+									"temporality": "cumulative",
+									"timeAggregation": "rate",
+									"spaceAggregation": "sum"
+								}],
+								"filter": {"expression": "service.name IN $service"},
+								"groupBy": [{"name": "service.name", "fieldDataType": "string", "fieldContext": "tag"}]
+							}}}
+						}
+					]
+				}
+			},
+			"p2": {
+				"kind": "Panel",
+				"spec": {
+					"plugin": {"kind": "signoz/NumberPanel", "spec": {}},
+					"queries": [
+						{
+							"kind": "TimeSeriesQuery",
+							"spec": {"plugin": {"kind": "signoz/BuilderQuery", "spec": {
+								"name": "X",
+								"signal": "metrics",
+								"aggregations": [{
+									"metricName": "signoz_latency_count",
+									"temporality": "cumulative",
+									"timeAggregation": "rate",
+									"spaceAggregation": "sum"
+								}]
+							}}}
+						}
+					]
+				}
+			}
+		},
+		"layouts": [
+			{
+				"kind": "Grid",
+				"spec": {
+					"display": {"title": "Row 1"},
+					"items": [
+						{"x": 0, "y": 0, "width": 6, "height": 6, "content": {"$ref": "#/spec/panels/p1"}},
+						{"x": 6, "y": 0, "width": 6, "height": 6, "content": {"$ref": "#/spec/panels/p2"}}
+					]
+				}
+			}
+		],
+		"duration": "1h"
+	},
+	"tags": [{"key": "team", "value": "alpha"}, {"key": "env", "value": "prod"}]
+}`
+
+func TestPatchableDashboardV2_Apply(t *testing.T) {
+	// Apply doesn't mutate the input *DashboardV2 — it marshals it to
+	// JSON, applies the patch, and unmarshals the result into a fresh
+	// struct. Sharing one base across subtests is safe.
+	var p PostableDashboardV2
+	require.NoError(t, json.Unmarshal([]byte(basePostableJSON), &p), "base postable JSON must validate")
+	base := &DashboardV2{
+		Info: DashboardInfo{
+			StoredDashboardInfo: p.StoredDashboardInfo,
+			Tags: []*tagtypes.Tag{
+				{Key: "team", Value: "alpha"},
+				{Key: "env", Value: "prod"},
+			},
+		},
+	}
+
+	decode := func(t *testing.T, body string) PatchableDashboardV2 {
+		t.Helper()
+		var patch PatchableDashboardV2
+		require.NoError(t, json.Unmarshal([]byte(body), &patch))
+		return patch
+	}
+
+	// jsonOf marshals the patched dashboard back to JSON so subtests can
+	// assert on field values without reaching into the typed plugin specs.
+	jsonOf := func(t *testing.T, out *UpdateableDashboardV2) string {
+		t.Helper()
+		raw, err := json.Marshal(out)
+		require.NoError(t, err)
+		return string(raw)
+	}
+
+	// ─────────────────────────────────────────────────────────────────
+	// Successful patches
+	// ─────────────────────────────────────────────────────────────────
+
+	t.Run("no-op preserves all fields", func(t *testing.T) {
+		out, err := decode(t, `[]`).Apply(base)
+		require.NoError(t, err)
+		assert.Equal(t, base.Info.Metadata, out.Metadata)
+		assert.Equal(t, base.Info.Data.Display.Name, out.Data.Display.Name)
+		require.Equal(t, len(base.Info.Data.Panels), len(out.Data.Panels))
+		for k, panel := range base.Info.Data.Panels {
+			require.Contains(t, out.Data.Panels, k)
+			assert.Equal(t, panel.Spec.Plugin.Kind, out.Data.Panels[k].Spec.Plugin.Kind)
+		}
+		assert.Len(t, out.Tags, len(base.Info.Tags))
+		assert.Len(t, out.Data.Variables, len(base.Info.Data.Variables))
+		assert.Len(t, out.Data.Layouts, len(base.Info.Data.Layouts))
+	})
+
+	t.Run("add metadata image", func(t *testing.T) {
+		out, err := decode(t, `[{"op": "add", "path": "/metadata/image", "value": "https://example.com/img.png"}]`).Apply(base)
+		require.NoError(t, err)
+		assert.Equal(t, "https://example.com/img.png", out.Metadata.Image)
+		assert.Equal(t, SchemaVersion, out.Metadata.SchemaVersion, "schemaVersion preserved")
+	})
+
+	t.Run("replace display name", func(t *testing.T) {
+		out, err := decode(t, `[{"op": "replace", "path": "/data/display/name", "value": "Renamed"}]`).Apply(base)
+		require.NoError(t, err)
+		assert.Equal(t, "Renamed", out.Data.Display.Name)
+	})
+
+	// Per RFC 6902 § 4.1, `add` on an existing object member replaces the
+	// existing value rather than erroring — same effect as `replace`.
+	t.Run("add overwrites existing display name", func(t *testing.T) {
+		out, err := decode(t, `[{"op": "add", "path": "/data/display/name", "value": "Overwritten"}]`).Apply(base)
+		require.NoError(t, err)
+		assert.Equal(t, "Overwritten", out.Data.Display.Name)
+	})
+
+	t.Run("add data refreshInterval", func(t *testing.T) {
+		out, err := decode(t, `[{"op": "add", "path": "/data/refreshInterval", "value": "30s"}]`).Apply(base)
+		require.NoError(t, err)
+		assert.Equal(t, "30s", string(out.Data.RefreshInterval))
+	})
+
+	t.Run("add panel leaves others untouched", func(t *testing.T) {
+		out, err := decode(t, `[{
+			"op": "add",
+			"path": "/data/panels/p3",
+			"value": {
+				"kind": "Panel",
+				"spec": {
+					"plugin": {"kind": "signoz/TablePanel", "spec": {}},
+					"queries": [{
+						"kind": "TimeSeriesQuery",
+						"spec": {"plugin": {"kind": "signoz/BuilderQuery", "spec": {
+							"name": "A",
+							"signal": "logs",
+							"aggregations": [{"expression": "count()"}]
+						}}}
+					}]
+				}
+			}
+		}]`).Apply(base)
+		require.NoError(t, err)
+		assert.Len(t, out.Data.Panels, 3)
+		assert.Contains(t, out.Data.Panels, "p1")
+		assert.Contains(t, out.Data.Panels, "p2")
+		assert.Contains(t, out.Data.Panels, "p3")
+	})
+
+	t.Run("replace single panel", func(t *testing.T) {
+		out, err := decode(t, `[{
+			"op": "replace",
+			"path": "/data/panels/p2",
+			"value": {
+				"kind": "Panel",
+				"spec": {
+					"plugin": {"kind": "signoz/BarChartPanel", "spec": {}},
+					"queries": [{
+						"kind": "TimeSeriesQuery",
+						"spec": {"plugin": {"kind": "signoz/BuilderQuery", "spec": {
+							"name": "A",
+							"signal": "metrics",
+							"aggregations": [{
+								"metricName": "signoz_calls_total",
+								"temporality": "cumulative",
+								"timeAggregation": "rate",
+								"spaceAggregation": "sum"
+							}]
+						}}}
+					}]
+				}
+			}
+		}]`).Apply(base)
+		require.NoError(t, err)
+		assert.Equal(t, PanelPluginKind("signoz/BarChartPanel"), out.Data.Panels["p2"].Spec.Plugin.Kind)
+		assert.Equal(t, PanelPluginKind("signoz/TimeSeriesPanel"), out.Data.Panels["p1"].Spec.Plugin.Kind, "p1 untouched")
+	})
+
+	// Removing a panel realistically also drops its layout item — exercise
+	// the multi-op shape the UI sends.
+	t.Run("remove panel and its layout item", func(t *testing.T) {
+		out, err := decode(t, `[
+			{"op": "remove", "path": "/data/panels/p2"},
+			{"op": "remove", "path": "/data/layouts/0/spec/items/1"}
+		]`).Apply(base)
+		require.NoError(t, err)
+		assert.Len(t, out.Data.Panels, 1)
+		assert.Contains(t, out.Data.Panels, "p1")
+		assert.NotContains(t, out.Data.Panels, "p2")
+		raw := jsonOf(t, out)
+		assert.NotContains(t, raw, `"$ref":"#/spec/panels/p2"`)
+		assert.Contains(t, raw, `"$ref":"#/spec/panels/p1"`)
+	})
+
+	// The headline use case: edit a single field of a single query inside
+	// one panel without re-sending any other part of the dashboard.
+	t.Run("rename single query inside panel", func(t *testing.T) {
+		out, err := decode(t, `[{
+			"op": "replace",
+			"path": "/data/panels/p1/spec/queries/0/spec/plugin/spec/name",
+			"value": "renamed"
+		}]`).Apply(base)
+		require.NoError(t, err)
+
+		require.Len(t, out.Data.Panels["p1"].Spec.Queries, 1)
+		assert.Contains(t, jsonOf(t, out), `"name":"renamed"`)
+	})
+
+	// Replace a query at a specific index — swaps query "A" out for "B"
+	// without re-sending the rest of the panel.
+	t.Run("replace query at index", func(t *testing.T) {
+		out, err := decode(t, `[{
+			"op": "replace",
+			"path": "/data/panels/p1/spec/queries/0",
+			"value": {
+				"kind": "TimeSeriesQuery",
+				"spec": {"plugin": {"kind": "signoz/BuilderQuery", "spec": {
+					"name": "B",
+					"signal": "metrics",
+					"aggregations": [{
+						"metricName": "signoz_db_calls_total",
+						"temporality": "cumulative",
+						"timeAggregation": "rate",
+						"spaceAggregation": "sum"
+					}]
+				}}}
+			}
+		}]`).Apply(base)
+		require.NoError(t, err)
+		require.Len(t, out.Data.Panels["p1"].Spec.Queries, 1)
+		raw := jsonOf(t, out)
+		assert.Contains(t, raw, `"name":"B"`)
+		assert.NotContains(t, raw, `"name":"A"`)
+	})
+
+	// ─────────────────────────────────────────────────────────────────
+	// Layout edits
+	// ─────────────────────────────────────────────────────────────────
+
+	t.Run("move panel by editing layout x coordinate", func(t *testing.T) {
+		out, err := decode(t, `[{"op": "replace", "path": "/data/layouts/0/spec/items/0/x", "value": 6}]`).Apply(base)
+		require.NoError(t, err)
+		raw := jsonOf(t, out)
+		// The first item used to live at x=0, now lives at x=6.
+		assert.Contains(t, raw, `"x":6,"y":0,"width":6,"height":6,"content":{"$ref":"#/spec/panels/p1"}`)
+	})
+
+	t.Run("resize panel by editing layout width", func(t *testing.T) {
+		out, err := decode(t, `[{"op": "replace", "path": "/data/layouts/0/spec/items/0/width", "value": 12}]`).Apply(base)
+		require.NoError(t, err)
+		raw := jsonOf(t, out)
+		assert.Contains(t, raw, `"width":12`)
+	})
+
+	t.Run("rename layout row title", func(t *testing.T) {
+		out, err := decode(t, `[{"op": "replace", "path": "/data/layouts/0/spec/display/title", "value": "Latency"}]`).Apply(base)
+		require.NoError(t, err)
+		assert.Contains(t, jsonOf(t, out), `"title":"Latency"`)
+	})
+
+	t.Run("append layout item", func(t *testing.T) {
+		out, err := decode(t, `[{
+			"op": "add",
+			"path": "/data/layouts/0/spec/items/-",
+			"value": {"x": 0, "y": 6, "width": 12, "height": 6, "content": {"$ref": "#/spec/panels/p1"}}
+		}]`).Apply(base)
+		require.NoError(t, err)
+		// Item count went 2 → 3.
+		raw := jsonOf(t, out)
+		assert.Equal(t, 3, strings.Count(raw, `"$ref":"#/spec/panels/`))
+	})
+
+	// Composing add-panel + add-layout-item is the realistic shape of the
+	// "add a new chart to my dashboard" UI flow — exercise it end-to-end.
+	t.Run("add panel and corresponding layout item", func(t *testing.T) {
+		out, err := decode(t, `[
+			{
+				"op": "add",
+				"path": "/data/panels/p3",
+				"value": {
+					"kind": "Panel",
+					"spec": {
+						"plugin": {"kind": "signoz/TablePanel", "spec": {}},
+						"queries": [{
+							"kind": "TimeSeriesQuery",
+							"spec": {"plugin": {"kind": "signoz/BuilderQuery", "spec": {
+								"name": "A",
+								"signal": "logs",
+								"aggregations": [{"expression": "count()"}]
+							}}}
+						}]
+					}
+				}
+			},
+			{
+				"op": "add",
+				"path": "/data/layouts/0/spec/items/-",
+				"value": {"x": 0, "y": 6, "width": 12, "height": 6, "content": {"$ref": "#/spec/panels/p3"}}
+			}
+		]`).Apply(base)
+		require.NoError(t, err)
+		assert.Len(t, out.Data.Panels, 3)
+		raw := jsonOf(t, out)
+		assert.Contains(t, raw, `"$ref":"#/spec/panels/p3"`)
+	})
+
+	t.Run("append tag", func(t *testing.T) {
+		out, err := decode(t, `[{"op": "add", "path": "/tags/-", "value": {"key": "env", "value": "staging"}}]`).Apply(base)
+		require.NoError(t, err)
+		require.Len(t, out.Tags, 3)
+		assert.Equal(t, "env", out.Tags[2].Key)
+		assert.Equal(t, "staging", out.Tags[2].Value)
+	})
+
+	t.Run("append tag when none exist", func(t *testing.T) {
+		noTagsBase := &DashboardV2{
+			Info: DashboardInfo{
+				StoredDashboardInfo: base.Info.StoredDashboardInfo,
+				Tags:                nil,
+			},
+		}
+		out, err := decode(t, `[{"op": "add", "path": "/tags/-", "value": {"key": "team", "value": "new"}}]`).Apply(noTagsBase)
+		require.NoError(t, err)
+		require.Len(t, out.Tags, 1)
+		assert.Equal(t, "team", out.Tags[0].Key)
+		assert.Equal(t, "new", out.Tags[0].Value)
+	})
+
+	t.Run("replace tag value", func(t *testing.T) {
+		out, err := decode(t, `[{"op": "replace", "path": "/tags/0/value", "value": "beta"}]`).Apply(base)
+		require.NoError(t, err)
+		require.Len(t, out.Tags, 2)
+		assert.Equal(t, "team", out.Tags[0].Key)
+		assert.Equal(t, "beta", out.Tags[0].Value)
+		assert.Equal(t, "env", out.Tags[1].Key, "tag at index 1 untouched")
+		assert.Equal(t, "prod", out.Tags[1].Value, "tag at index 1 untouched")
+		for _, tag := range out.Tags {
+			assert.NotEqual(t, "alpha", tag.Value, "old tag value must be gone")
+		}
+	})
+
+	t.Run("multiple ops applied in order", func(t *testing.T) {
+		out, err := decode(t, `[
+			{"op": "replace", "path": "/data/display/name", "value": "Multi-step"},
+			{"op": "remove",  "path": "/data/panels/p2"},
+			{"op": "add",     "path": "/tags/-", "value": {"key": "env", "value": "staging"}}
+		]`).Apply(base)
+		require.NoError(t, err)
+		assert.Equal(t, "Multi-step", out.Data.Display.Name)
+		assert.Len(t, out.Data.Panels, 1)
+		assert.Len(t, out.Tags, 3)
+	})
+
+	// `test` is an RFC 6902 precondition op: aborts the patch if the value
+	// at the path doesn't equal the supplied value. Used for optimistic
+	// concurrency. Here it matches, so the subsequent ops apply.
+	t.Run("test op passes", func(t *testing.T) {
+		out, err := decode(t, `[
+			{"op": "test",    "path": "/data/display/name", "value": "Service overview"},
+			{"op": "replace", "path": "/data/display/name", "value": "Confirmed"}
+		]`).Apply(base)
+		require.NoError(t, err)
+		assert.Equal(t, "Confirmed", out.Data.Display.Name)
+	})
+
+	// ─────────────────────────────────────────────────────────────────
+	// Failure cases
+	// ─────────────────────────────────────────────────────────────────
+
+	t.Run("decode rejects non-array body", func(t *testing.T) {
+		var patch PatchableDashboardV2
+		err := json.Unmarshal([]byte(`{"op": "replace"}`), &patch)
+		require.Error(t, err)
+	})
+
+	t.Run("decode rejects malformed JSON", func(t *testing.T) {
+		var patch PatchableDashboardV2
+		// Outer json.Unmarshal rejects non-JSON before PatchableDashboardV2's
+		// UnmarshalJSON runs, so the error is a stdlib SyntaxError rather
+		// than the InvalidInput-classified wrap.
+		err := json.Unmarshal([]byte(`not json`), &patch)
+		require.Error(t, err)
+	})
+
+	// `test` precondition fails — the whole patch is rejected, including
+	// the subsequent replace.
+	t.Run("test op failure rejected", func(t *testing.T) {
+		_, err := decode(t, `[
+			{"op": "test", "path": "/data/display/name", "value": "Wrong"},
+			{"op": "replace", "path": "/data/display/name", "value": "Should not apply"}
+		]`).Apply(base)
+		require.Error(t, err)
+	})
+
+	t.Run("remove at missing path rejected", func(t *testing.T) {
+		_, err := decode(t, `[{"op": "remove", "path": "/data/panels/does-not-exist"}]`).Apply(base)
+		require.Error(t, err)
+	})
+
+	t.Run("remove schemaVersion rejected", func(t *testing.T) {
+		_, err := decode(t, `[{"op": "remove", "path": "/metadata/schemaVersion"}]`).Apply(base)
+		require.Error(t, err)
+	})
+
+	t.Run("wrong schemaVersion rejected", func(t *testing.T) {
+		_, err := decode(t, `[{"op": "replace", "path": "/metadata/schemaVersion", "value": "v5"}]`).Apply(base)
+		require.Error(t, err)
+		require.Contains(t, err.Error(), SchemaVersion)
+	})
+
+	t.Run("empty display name rejected", func(t *testing.T) {
+		_, err := decode(t, `[{"op": "replace", "path": "/data/display/name", "value": ""}]`).Apply(base)
+		require.Error(t, err)
+		require.Contains(t, err.Error(), "data.display.name is required")
+	})
+
+	t.Run("unknown top-level field rejected", func(t *testing.T) {
+		_, err := decode(t, `[{"op": "add", "path": "/bogus", "value": 42}]`).Apply(base)
+		require.Error(t, err)
+		require.Contains(t, err.Error(), "bogus")
+	})
+
+	t.Run("invalid panel kind rejected", func(t *testing.T) {
+		_, err := decode(t, `[{
+			"op": "replace",
+			"path": "/data/panels/p1",
+			"value": {
+				"kind": "Panel",
+				"spec": {"plugin": {"kind": "signoz/NotAPanel", "spec": {}}}
+			}
+		}]`).Apply(base)
+		require.Error(t, err)
+		require.Contains(t, err.Error(), "NotAPanel")
+	})
+
+	t.Run("query kind incompatible with panel rejected", func(t *testing.T) {
+		// PromQLQuery is not allowed on ListPanel — verify the cross-check
+		// in Validate still runs after a patch.
+		_, err := decode(t, `[{
+			"op": "replace",
+			"path": "/data/panels/p2",
+			"value": {
+				"kind": "Panel",
+				"spec": {
+					"plugin": {"kind": "signoz/ListPanel", "spec": {}},
+					"queries": [{"kind": "TimeSeriesQuery", "spec": {"plugin": {"kind": "signoz/PromQLQuery", "spec": {"name": "A", "query": "up"}}}}]
+				}
+			}
+		}]`).Apply(base)
+		require.Error(t, err)
+	})
+
+	t.Run("removing the only query rejected", func(t *testing.T) {
+		// Validate requires exactly one query per panel — leaving zero is rejected.
+		_, err := decode(t, `[{"op": "remove", "path": "/data/panels/p2/spec/queries/0"}]`).Apply(base)
+		require.Error(t, err)
+		require.Contains(t, err.Error(), "panel must have one query")
+	})
+
+	t.Run("two direct queries rejected", func(t *testing.T) {
+		// Validate requires exactly one query per panel. To display multiple
+		// data sources in one panel, wrap them in a CompositeQuery (see the
+		// "replace query with composite" subtest below).
+		_, err := decode(t, `[{
+			"op": "replace",
+			"path": "/data/panels/p1",
+			"value": {
+				"kind": "Panel",
+				"spec": {
+					"plugin": {"kind": "signoz/TimeSeriesPanel", "spec": {}},
+					"queries": [
+						{"kind": "TimeSeriesQuery", "spec": {"plugin": {"kind": "signoz/BuilderQuery", "spec": {
+							"name": "A", "signal": "metrics",
+							"aggregations": [{"metricName": "signoz_calls_total", "temporality": "cumulative", "timeAggregation": "rate", "spaceAggregation": "sum"}]
+						}}}},
+						{"kind": "TimeSeriesQuery", "spec": {"plugin": {"kind": "signoz/BuilderQuery", "spec": {
+							"name": "B", "signal": "metrics",
+							"aggregations": [{"metricName": "signoz_db_calls_total", "temporality": "cumulative", "timeAggregation": "rate", "spaceAggregation": "sum"}]
+						}}}}
+					]
+				}
+			}
+		}]`).Apply(base)
+		require.Error(t, err)
+		require.Contains(t, err.Error(), "panel must have one query")
+	})
+
+	t.Run("too many tags rejected", func(t *testing.T) {
+		_, err := decode(t, `[
+			{"op": "add", "path": "/tags/-", "value": {"key": "t", "value": "1"}},
+			{"op": "add", "path": "/tags/-", "value": {"key": "t", "value": "2"}},
+			{"op": "add", "path": "/tags/-", "value": {"key": "t", "value": "3"}},
+			{"op": "add", "path": "/tags/-", "value": {"key": "t", "value": "4"}}
+		]`).Apply(base)
+		require.Error(t, err)
+		require.Contains(t, err.Error(), "at most")
+	})
+}

pkg/types/dashboardtypes/pinned_dashboard.go

@@ -0,0 +1,22 @@
+package dashboardtypes
+
+import (
+	"time"
+
+	"github.com/SigNoz/signoz/pkg/errors"
+	"github.com/SigNoz/signoz/pkg/valuer"
+	"github.com/uptrace/bun"
+)
+
+const MaxPinnedDashboardsPerUser = 10
+
+var ErrCodePinnedDashboardLimitHit = errors.MustNewCode("pinned_dashboard_limit_hit")
+
+type PinnedDashboard struct {
+	bun.BaseModel `bun:"table:pinned_dashboard,alias:pinned_dashboard"`
+
+	UserID      valuer.UUID `bun:"user_id,pk,type:text"`
+	DashboardID valuer.UUID `bun:"dashboard_id,pk,type:text"`
+	OrgID       valuer.UUID `bun:"org_id,type:text,notnull"`
+	PinnedAt    time.Time   `bun:"pinned_at,notnull,default:current_timestamp"`
+}

pkg/types/dashboardtypes/store.go

@@ -32,4 +32,21 @@ type Store interface {
 	DeletePublic(context.Context, string) error
 
 	RunInTx(context.Context, func(context.Context) error) error
+
+	// ════════════════════════════════════════════════════════════════════════
+	// v2 dashboard methods
+	// ════════════════════════════════════════════════════════════════════════
+	GetV2(context.Context, valuer.UUID, valuer.UUID) (*StorableDashboard, *StorablePublicDashboard, error)
+
+	UpdateV2(ctx context.Context, orgID valuer.UUID, id valuer.UUID, updatedBy string, data StorableDashboardData) error
+
+	LockUnlockV2(ctx context.Context, orgID valuer.UUID, id valuer.UUID, locked bool, updatedBy string) error
+
+	// bool return is hasMore — the store fetches Limit+1 to detect it.
+	ListV2(ctx context.Context, orgID valuer.UUID, userID valuer.UUID, params *ListDashboardsV2Params) ([]*DashboardListRow, bool, error)
+
+	// Returns ErrCodePinnedDashboardLimitHit when the user is at MaxPinnedDashboardsPerUser.
+	PinForUser(ctx context.Context, pd *PinnedDashboard) error
+
+	UnpinForUser(ctx context.Context, userID valuer.UUID, dashboardID valuer.UUID) error
 }

pkg/types/tagtypes/store.go

@@ -0,0 +1,30 @@
+package tagtypes
+
+import (
+	"context"
+
+	"github.com/SigNoz/signoz/pkg/types/coretypes"
+	"github.com/SigNoz/signoz/pkg/valuer"
+)
+
+type Store interface {
+	List(ctx context.Context, orgID valuer.UUID, kind coretypes.Kind) ([]*Tag, error)
+
+	ListByResource(ctx context.Context, orgID valuer.UUID, kind coretypes.Kind, resourceID valuer.UUID) ([]*Tag, error)
+
+	ListByResources(ctx context.Context, orgID valuer.UUID, kind coretypes.Kind, resourceIDs []valuer.UUID) (map[valuer.UUID][]*Tag, error)
+
+	// CreateOrGet upserts the given tags and returns them with authoritative IDs.
+	// On conflict on (org_id, kind, LOWER(key), LOWER(value)) — which
+	// happens only when a concurrent insert raced ours, including casing-only
+	// collisions — the returned entry carries the existing row's ID rather
+	// than the pre-generated one in the input.
+	CreateOrGet(ctx context.Context, tags []*Tag) ([]*Tag, error)
+
+	// CreateRelations inserts tag-resource relations. Conflicts on the composite primary key are ignored.
+	CreateRelations(ctx context.Context, relations []*TagRelation) error
+
+	DeleteRelationsExcept(ctx context.Context, orgID valuer.UUID, kind coretypes.Kind, resourceID valuer.UUID, keepTagIDs []valuer.UUID) error
+
+	RunInTx(ctx context.Context, cb func(ctx context.Context) error) error
+}

pkg/types/tagtypes/tag.go

@@ -0,0 +1,113 @@
+package tagtypes
+
+import (
+	"regexp"
+	"strings"
+	"time"
+	"unicode/utf8"
+
+	"github.com/SigNoz/signoz/pkg/errors"
+	"github.com/SigNoz/signoz/pkg/types"
+	"github.com/SigNoz/signoz/pkg/types/coretypes"
+	"github.com/SigNoz/signoz/pkg/valuer"
+	"github.com/uptrace/bun"
+)
+
+const (
+	MAX_LEN_TAG_KEY   = 32
+	MAX_LEN_TAG_VALUE = 32
+)
+
+var (
+	tagKeyRegex   = regexp.MustCompile(`^[a-zA-Z$_@{#][a-zA-Z0-9$_@#{}:/-]*$`)
+	tagValueRegex = regexp.MustCompile(`^[a-zA-Z0-9$_@#{}:.+=/-]*$`)
+
+	ErrCodeTagInvalidKey   = errors.MustNewCode("tag_invalid_key")
+	ErrCodeTagInvalidValue = errors.MustNewCode("tag_invalid_value")
+	ErrCodeTagNotFound     = errors.MustNewCode("tag_not_found")
+)
+
+type Tag struct {
+	bun.BaseModel `bun:"table:tag,alias:tag"`
+
+	types.Identifiable
+	types.TimeAuditable
+	Key   string         `json:"key" required:"true" bun:"key,type:text,notnull"`
+	Value string         `json:"value" required:"true" bun:"value,type:text,notnull"`
+	OrgID valuer.UUID    `json:"orgId" required:"true" bun:"org_id,type:text,notnull"`
+	Kind  coretypes.Kind `json:"kind" required:"true" bun:"kind,type:text,notnull"`
+}
+
+type PostableTag struct {
+	Key   string `json:"key" required:"true"`
+	Value string `json:"value" required:"true"`
+}
+
+type GettableTag = PostableTag
+
+func NewGettableTagFromTag(tag *Tag) *GettableTag {
+	return &GettableTag{Key: tag.Key, Value: tag.Value}
+}
+
+func NewGettableTagsFromTags(tags []*Tag) []*GettableTag {
+	out := make([]*GettableTag, len(tags))
+	for i, t := range tags {
+		out[i] = NewGettableTagFromTag(t)
+	}
+	return out
+}
+
+func NewPostableTagFromTag(tag *Tag) PostableTag {
+	return PostableTag{Key: tag.Key, Value: tag.Value}
+}
+
+func NewPostableTagsFromTags(tags []*Tag) []PostableTag {
+	out := make([]PostableTag, len(tags))
+	for i, t := range tags {
+		out[i] = NewPostableTagFromTag(t)
+	}
+	return out
+}
+
+func NewTag(orgID valuer.UUID, kind coretypes.Kind, key, value string) *Tag {
+	now := time.Now()
+	return &Tag{
+		Identifiable: types.Identifiable{ID: valuer.GenerateUUID()},
+		TimeAuditable: types.TimeAuditable{
+			CreatedAt: now,
+			UpdatedAt: now,
+		},
+		Key:   key,
+		Value: value,
+		OrgID: orgID,
+		Kind:  kind,
+	}
+}
+
+// ValidatePostableTag trims and validates a user-supplied (key, value) pair.
+// Returns the cleaned values on success. Entity-specific reserved-key checks
+// (e.g. dashboard column names that would collide with the list-query DSL) are
+// the caller's responsibility — perform them before calling into the tag module.
+func ValidatePostableTag(p PostableTag) (string, string, error) {
+	key := strings.TrimSpace(p.Key)
+	value := strings.TrimSpace(p.Value)
+	if key == "" {
+		return "", "", errors.Newf(errors.TypeInvalidInput, ErrCodeTagInvalidKey, "tag key cannot be empty")
+	}
+	if value == "" {
+		return "", "", errors.Newf(errors.TypeInvalidInput, ErrCodeTagInvalidValue, "tag value cannot be empty")
+	}
+	if !tagKeyRegex.MatchString(key) {
+		return "", "", errors.Newf(errors.TypeInvalidInput, ErrCodeTagInvalidKey, "tag key %q contains disallowed characters", key)
+	}
+	if !tagValueRegex.MatchString(value) {
+		return "", "", errors.Newf(errors.TypeInvalidInput, ErrCodeTagInvalidValue, "tag value %q contains disallowed characters", value)
+	}
+	if utf8.RuneCountInString(key) > MAX_LEN_TAG_KEY {
+		return "", "", errors.Newf(errors.TypeInvalidInput, ErrCodeTagInvalidKey, "tag key %q exceeds the %d-character limit", key, MAX_LEN_TAG_KEY)
+	}
+	if utf8.RuneCountInString(value) > MAX_LEN_TAG_VALUE {
+		return "", "", errors.Newf(errors.TypeInvalidInput, ErrCodeTagInvalidValue, "tag value %q exceeds the %d-character limit", value, MAX_LEN_TAG_VALUE)
+	}
+	return key, value, nil
+}

pkg/types/tagtypes/tag_relation.go

@@ -0,0 +1,34 @@
+package tagtypes
+
+import (
+	"github.com/SigNoz/signoz/pkg/types"
+	"github.com/SigNoz/signoz/pkg/types/coretypes"
+	"github.com/SigNoz/signoz/pkg/valuer"
+	"github.com/uptrace/bun"
+)
+
+type TagRelation struct {
+	bun.BaseModel `bun:"table:tag_relation,alias:tag_relation"`
+
+	types.Identifiable
+	Kind       coretypes.Kind `json:"kind" required:"true" bun:"kind,type:text,notnull"`
+	ResourceID valuer.UUID    `json:"resourceId" required:"true" bun:"resource_id,type:text,notnull"`
+	TagID      valuer.UUID    `json:"tagId" required:"true" bun:"tag_id,type:text,notnull"`
+}
+
+func NewTagRelation(kind coretypes.Kind, resourceID valuer.UUID, tagID valuer.UUID) *TagRelation {
+	return &TagRelation{
+		Identifiable: types.Identifiable{ID: valuer.GenerateUUID()},
+		Kind:         kind,
+		ResourceID:   resourceID,
+		TagID:        tagID,
+	}
+}
+
+func NewTagRelations(kind coretypes.Kind, resourceID valuer.UUID, tagIDs []valuer.UUID) []*TagRelation {
+	relations := make([]*TagRelation, 0, len(tagIDs))
+	for _, tagID := range tagIDs {
+		relations = append(relations, NewTagRelation(kind, resourceID, tagID))
+	}
+	return relations
+}

pkg/types/tagtypes/tag_test.go

@@ -0,0 +1,69 @@
+package tagtypes
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestValidatePostableTag(t *testing.T) {
+	tests := []struct {
+		name      string
+		input     PostableTag
+		wantKey   string
+		wantValue string
+		wantError bool
+	}{
+		{name: "simple pair", input: PostableTag{Key: "team", Value: "pulse"}, wantKey: "team", wantValue: "pulse"},
+		{name: "preserves casing", input: PostableTag{Key: "Team", Value: "Pulse"}, wantKey: "Team", wantValue: "Pulse"},
+		{name: "trims key", input: PostableTag{Key: "  team  ", Value: "pulse"}, wantKey: "team", wantValue: "pulse"},
+		{name: "trims value", input: PostableTag{Key: "team", Value: "  pulse  "}, wantKey: "team", wantValue: "pulse"},
+
+		{name: "empty key rejected", input: PostableTag{Key: "", Value: "pulse"}, wantError: true},
+		{name: "empty value rejected", input: PostableTag{Key: "team", Value: ""}, wantError: true},
+		{name: "whitespace-only key rejected", input: PostableTag{Key: "   ", Value: "pulse"}, wantError: true},
+		{name: "whitespace-only value rejected", input: PostableTag{Key: "team", Value: "   "}, wantError: true},
+
+		{name: "slash accepted", input: PostableTag{Key: "team/eng", Value: "pulse/events"}, wantKey: "team/eng", wantValue: "pulse/events"},
+		{name: "colon accepted", input: PostableTag{Key: "team:eng", Value: "env:prod"}, wantKey: "team:eng", wantValue: "env:prod"},
+		{name: "extra punctuation accepted in both", input: PostableTag{Key: "a_b-c@d#e$f{g}h", Value: "a_b-c@d#e$f{g}h"}, wantKey: "a_b-c@d#e$f{g}h", wantValue: "a_b-c@d#e$f{g}h"},
+
+		// Key is strict; value allows the extra `. + =` plus leading digits.
+		{name: "dot in key rejected", input: PostableTag{Key: "team.eng", Value: "pulse"}, wantError: true},
+		{name: "dot in value accepted", input: PostableTag{Key: "team", Value: "pulse.events"}, wantKey: "team", wantValue: "pulse.events"},
+		{name: "plus in key rejected", input: PostableTag{Key: "team+eng", Value: "pulse"}, wantError: true},
+		{name: "plus in value accepted", input: PostableTag{Key: "team", Value: "a+b"}, wantKey: "team", wantValue: "a+b"},
+		{name: "equals in key rejected", input: PostableTag{Key: "team=eng", Value: "pulse"}, wantError: true},
+		{name: "equals in value accepted", input: PostableTag{Key: "team", Value: "a=b"}, wantKey: "team", wantValue: "a=b"},
+		{name: "leading digit in key rejected", input: PostableTag{Key: "2024team", Value: "pulse"}, wantError: true},
+		{name: "leading digit in value accepted", input: PostableTag{Key: "team", Value: "2024_team"}, wantKey: "team", wantValue: "2024_team"},
+
+		{name: "unicode letter in key rejected", input: PostableTag{Key: "チーム", Value: "pulse"}, wantError: true},
+		{name: "unicode letter in value rejected", input: PostableTag{Key: "team", Value: "東京"}, wantError: true},
+
+		{name: "internal space in key rejected", input: PostableTag{Key: "team eng", Value: "pulse"}, wantError: true},
+		{name: "internal space in value rejected", input: PostableTag{Key: "team", Value: "pulse two"}, wantError: true},
+
+		{name: "disallowed char in key rejected", input: PostableTag{Key: "team!eng", Value: "pulse"}, wantError: true},
+		{name: "disallowed char in value rejected", input: PostableTag{Key: "team", Value: "pulse!one"}, wantError: true},
+		{name: "control char rejected", input: PostableTag{Key: "team\tone", Value: "pulse"}, wantError: true},
+
+		{name: "key at the 32-char limit accepted", input: PostableTag{Key: "abcdefghijklmnopabcdefghijklmnop", Value: "pulse"}, wantKey: "abcdefghijklmnopabcdefghijklmnop", wantValue: "pulse"},
+		{name: "value at the 32-char limit accepted", input: PostableTag{Key: "team", Value: "abcdefghijklmnopabcdefghijklmnop"}, wantKey: "team", wantValue: "abcdefghijklmnopabcdefghijklmnop"},
+		{name: "key over the 32-char limit rejected", input: PostableTag{Key: "abcdefghijklmnopabcdefghijklmnopq", Value: "pulse"}, wantError: true},
+		{name: "value over the 32-char limit rejected", input: PostableTag{Key: "team", Value: "abcdefghijklmnopabcdefghijklmnopq"}, wantError: true},
+	}
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			gotKey, gotValue, err := ValidatePostableTag(tc.input)
+			if tc.wantError {
+				require.Error(t, err)
+				return
+			}
+			require.NoError(t, err)
+			assert.Equal(t, tc.wantKey, gotKey)
+			assert.Equal(t, tc.wantValue, gotValue)
+		})
+	}
+}

pkg/types/tagtypes/tagtypestest/store.go

@@ -0,0 +1,53 @@
+package tagtypestest
+
+import (
+	"context"
+
+	"github.com/SigNoz/signoz/pkg/types/coretypes"
+	"github.com/SigNoz/signoz/pkg/types/tagtypes"
+	"github.com/SigNoz/signoz/pkg/valuer"
+)
+
+// MockStore is an in-memory tagtypes.MockStore implementation for tests. Most methods
+// are inert no-ops; List returns the contents of Tags and increments
+// ListCallCount so tests can assert on lookup behavior. Set Tags directly to
+// preload fixtures.
+type MockStore struct {
+	Tags          []*tagtypes.Tag
+	ListCallCount int
+}
+
+func NewStore() *MockStore {
+	return &MockStore{}
+}
+
+func (s *MockStore) List(_ context.Context, _ valuer.UUID, _ coretypes.Kind) ([]*tagtypes.Tag, error) {
+	s.ListCallCount++
+	out := make([]*tagtypes.Tag, len(s.Tags))
+	copy(out, s.Tags)
+	return out, nil
+}
+
+func (s *MockStore) CreateOrGet(_ context.Context, tags []*tagtypes.Tag) ([]*tagtypes.Tag, error) {
+	return tags, nil
+}
+
+func (s *MockStore) CreateRelations(_ context.Context, _ []*tagtypes.TagRelation) error {
+	return nil
+}
+
+func (s *MockStore) ListByResource(_ context.Context, _ valuer.UUID, _ coretypes.Kind, _ valuer.UUID) ([]*tagtypes.Tag, error) {
+	return []*tagtypes.Tag{}, nil
+}
+
+func (s *MockStore) ListByResources(_ context.Context, _ valuer.UUID, _ coretypes.Kind, _ []valuer.UUID) (map[valuer.UUID][]*tagtypes.Tag, error) {
+	return map[valuer.UUID][]*tagtypes.Tag{}, nil
+}
+
+func (s *MockStore) DeleteRelationsExcept(_ context.Context, _ valuer.UUID, _ coretypes.Kind, _ valuer.UUID, _ []valuer.UUID) error {
+	return nil
+}
+
+func (s *MockStore) RunInTx(ctx context.Context, cb func(ctx context.Context) error) error {
+	return cb(ctx)
+}

tests/integration/tests/dashboard/03_v2_dashboard.py

@@ -0,0 +1,288 @@
+import json
+from collections.abc import Callable
+from http import HTTPStatus
+from pathlib import Path
+
+import pytest
+import requests
+
+from fixtures.auth import USER_ADMIN_EMAIL, USER_ADMIN_PASSWORD
+from fixtures.types import Operation, SigNoz
+
+_PERSES_FIXTURE = (
+    Path(__file__).parents[4]
+    / "pkg/types/dashboardtypes/dashboardtypesv2/testdata/perses.json"
+)
+
+
+def _post_dashboard(signoz: SigNoz, token: str, body: dict) -> requests.Response:
+    return requests.post(
+        signoz.self.host_configs["8080"].get("/api/v2/dashboards"),
+        json=body,
+        headers={"Authorization": f"Bearer {token}"},
+        timeout=2,
+    )
+
+
+def test_empty_body_rejected_for_missing_schema_version(
+    signoz: SigNoz,
+    create_user_admin: Operation,  # pylint: disable=unused-argument
+    get_token: Callable[[str, str], str],
+):
+    admin_token = get_token(USER_ADMIN_EMAIL, USER_ADMIN_PASSWORD)
+
+    response = _post_dashboard(signoz, admin_token, {})
+
+    assert response.status_code == HTTPStatus.BAD_REQUEST
+    body = response.json()
+    assert body["status"] == "error"
+    assert body["error"]["code"] == "dashboard_invalid_input"
+    assert body["error"]["message"] == 'metadata.schemaVersion must be "v6", got ""'
+
+
+def test_missing_display_name_rejected(
+    signoz: SigNoz,
+    create_user_admin: Operation,  # pylint: disable=unused-argument
+    get_token: Callable[[str, str], str],
+):
+    admin_token = get_token(USER_ADMIN_EMAIL, USER_ADMIN_PASSWORD)
+
+    response = _post_dashboard(signoz, admin_token, {"metadata": {"schemaVersion": "v6"}})
+
+    assert response.status_code == HTTPStatus.BAD_REQUEST
+    body = response.json()
+    assert body["status"] == "error"
+    assert body["error"]["code"] == "dashboard_invalid_input"
+    assert body["error"]["message"] == "data.display.name is required"
+
+
+def test_minimal_valid_body_creates_dashboard(
+    signoz: SigNoz,
+    create_user_admin: Operation,  # pylint: disable=unused-argument
+    get_token: Callable[[str, str], str],
+):
+    admin_token = get_token(USER_ADMIN_EMAIL, USER_ADMIN_PASSWORD)
+
+    response = _post_dashboard(
+        signoz,
+        admin_token,
+        {
+            "metadata": {"schemaVersion": "v6"},
+            "data": {"display": {"name": "test name"}},
+        },
+    )
+
+    assert response.status_code == HTTPStatus.CREATED
+    body = response.json()
+    assert body["status"] == "success"
+    data = body["data"]
+    assert data["info"]["data"]["display"]["name"] == "test name"
+    assert data["info"]["metadata"]["schemaVersion"] == "v6"
+
+
+def test_unknown_root_field_rejected(
+    signoz: SigNoz,
+    create_user_admin: Operation,  # pylint: disable=unused-argument
+    get_token: Callable[[str, str], str],
+):
+    admin_token = get_token(USER_ADMIN_EMAIL, USER_ADMIN_PASSWORD)
+
+    response = _post_dashboard(
+        signoz,
+        admin_token,
+        {
+            "metadata": {"schemaVersion": "v6"},
+            "data": {"display": {"name": "test name"}},
+            "unknownfieldattheroot": "shouldgiveanerror",
+        },
+    )
+
+    assert response.status_code == HTTPStatus.BAD_REQUEST
+    body = response.json()
+    assert body["status"] == "error"
+    assert body["error"]["code"] == "dashboard_invalid_input"
+    assert body["error"]["message"] == 'json: unknown field "unknownfieldattheroot"'
+
+
+def test_unknown_nested_field_rejected(
+    signoz: SigNoz,
+    create_user_admin: Operation,  # pylint: disable=unused-argument
+    get_token: Callable[[str, str], str],
+):
+    admin_token = get_token(USER_ADMIN_EMAIL, USER_ADMIN_PASSWORD)
+
+    response = _post_dashboard(
+        signoz,
+        admin_token,
+        {
+            "metadata": {"schemaVersion": "v6"},
+            "data": {
+                "display": {
+                    "name": "test name",
+                    "unknownfieldinside": "shouldgiveanerror",
+                },
+            },
+        },
+    )
+
+    assert response.status_code == HTTPStatus.BAD_REQUEST
+    body = response.json()
+    assert body["status"] == "error"
+    assert body["error"]["code"] == "dashboard_invalid_input"
+    assert body["error"]["message"] == 'json: unknown field "unknownfieldinside"'
+
+
+def test_perses_fixture_creates_dashboard(
+    signoz: SigNoz,
+    create_user_admin: Operation,  # pylint: disable=unused-argument
+    get_token: Callable[[str, str], str],
+):
+    """The perses.json fixture is the kitchen-sink dashboard the schema tests
+    use; round-tripping it through the create API exercises the full plugin
+    surface end-to-end."""
+    admin_token = get_token(USER_ADMIN_EMAIL, USER_ADMIN_PASSWORD)
+
+    data = json.loads(_PERSES_FIXTURE.read_text())
+    response = _post_dashboard(
+        signoz,
+        admin_token,
+        {"metadata": {"schemaVersion": "v6"}, "data": data},
+    )
+
+    assert response.status_code == HTTPStatus.CREATED
+    body = response.json()
+    assert body["status"] == "success"
+    assert body["data"]["info"]["data"]["display"]["name"] == data["display"]["name"]
+
+
+def test_tag_casing_is_inherited_from_existing_parent(
+    signoz: SigNoz,
+    create_user_admin: Operation,  # pylint: disable=unused-argument
+    get_token: Callable[[str, str], str],
+):
+    """A second dashboard tagged with a sibling under a casing-variant parent
+    path should adopt the existing parent's casing while keeping the
+    user-supplied casing for the new leaf segment."""
+    admin_token = get_token(USER_ADMIN_EMAIL, USER_ADMIN_PASSWORD)
+
+    first = _post_dashboard(
+        signoz,
+        admin_token,
+        {
+            "metadata": {"schemaVersion": "v6"},
+            "data": {"display": {"name": "dac"}},
+            "tags": [{"name": "engineering/US/NYC"}],
+        },
+    )
+    assert first.status_code == HTTPStatus.CREATED
+    first_tags = first.json()["data"]["info"]["tags"]
+    assert first_tags == [{"name": "engineering/US/NYC"}]
+
+    second = _post_dashboard(
+        signoz,
+        admin_token,
+        {
+            "metadata": {"schemaVersion": "v6"},
+            "data": {"display": {"name": "dac"}},
+            "tags": [{"name": "engineering/us/SF"}],
+        },
+    )
+    assert second.status_code == HTTPStatus.CREATED
+    second_tags = second.json()["data"]["info"]["tags"]
+    assert second_tags == [{"name": "engineering/US/SF"}]
+
+
+# ─── list filter DSL ─────────────────────────────────────────────────────────
+# All fixtures carry a marker tag so each test query can be ANDed with
+# `tag = '__lst_v2_filter_test'` server-side. That guarantees no leakage
+# from any other test file/module sharing the session-scoped DB. The marker
+# rules out a `tag NOT EXISTS` case (a fixture that's no-tags by design
+# can't also carry the marker) — that operator is covered by the visitor
+# unit tests in pkg/types/dashboardtypes/listfilter.
+
+_LIST_FIXTURE_MARKER_TAG = "__lst_v2_filter_test"
+
+_LIST_FIXTURE_DASHBOARDS = [
+    ("lst-overview-prod", ["team/pulse", "prod", "team/frontend"]),
+    ("lst-overview-dev", ["team/pulse", "dev"]),
+    ("lst-database-prod", ["team/storage", "prod", "database/postgres"]),
+    ("lst-database-test", ["team/storage", "test", "database/redis"]),
+    ("lst-frontend-team", ["team/pulse", "team/frontend"]),
+]
+
+
+@pytest.fixture(name="list_fixture_dashboards", scope="module")
+def list_fixture_dashboards(
+    signoz: SigNoz,
+    create_user_admin: Operation,  # pylint: disable=unused-argument
+    get_token: Callable[[str, str], str],
+) -> None:
+    admin_token = get_token(USER_ADMIN_EMAIL, USER_ADMIN_PASSWORD)
+    for name, tags in _LIST_FIXTURE_DASHBOARDS:
+        body: dict = {
+            "metadata": {"schemaVersion": "v6"},
+            "data": {"display": {"name": name}},
+            "tags": [{"name": t} for t in [*tags, _LIST_FIXTURE_MARKER_TAG]],
+        }
+        response = _post_dashboard(signoz, admin_token, body)
+        assert response.status_code == HTTPStatus.CREATED, response.text
+
+
+@pytest.mark.parametrize(
+    ("filter_query", "expected_names"),
+    [
+        (
+            "name = 'lst-overview-prod' AND tag = 'team/frontend'",
+            {"lst-overview-prod"},
+        ),
+        (
+            "name LIKE 'database/%' AND tag = 'team/storage'",
+            {"lst-database-prod", "lst-database-test"},
+        ),
+        (
+            "(name CONTAINS 'overview' OR name CONTAINS 'frontend') AND tag NOT IN ['dev']",
+            {"lst-overview-prod", "lst-frontend-team"},
+        ),
+        (
+            "NOT tag = 'prod' AND name CONTAINS 'lst-'",
+            {"lst-overview-dev", "lst-database-test", "lst-frontend-team"},
+        ),
+        (
+            "tag = 'team/pulse' AND tag != 'dev'",
+            {"lst-overview-prod", "lst-frontend-team"},
+        ),
+        (
+            "tag IN ['dev', 'test'] OR name = 'lst-overview-prod'",
+            {"lst-overview-dev", "lst-database-test", "lst-overview-prod"},
+        ),
+        (
+            "tag = 'team/pulse' AND tag LIKE 'database/%'",
+            {"lst-overview-dev", "lst-database-test", "lst-overview-prod"},
+        ),
+    ],
+)
+def test_list_v2_filter_dsl(
+    signoz: SigNoz,
+    create_user_admin: Operation,  # pylint: disable=unused-argument
+    get_token: Callable[[str, str], str],
+    list_fixture_dashboards: None,  # pylint: disable=unused-argument
+    filter_query: str,
+    expected_names: set[str],
+):
+    admin_token = get_token(USER_ADMIN_EMAIL, USER_ADMIN_PASSWORD)
+
+    scoped_query = f"({filter_query}) AND tag = '{_LIST_FIXTURE_MARKER_TAG}'"
+    response = requests.get(
+        signoz.self.host_configs["8080"].get("/api/v2/dashboards"),
+        params={"query": scoped_query, "limit": 200},
+        headers={"Authorization": f"Bearer {admin_token}"},
+        timeout=2,
+    )
+    assert response.status_code == HTTPStatus.OK, response.text
+    body = response.json()
+    assert body["status"] == "success"
+
+    returned_names = {
+        d["info"]["data"]["display"]["name"] for d in body["data"]["dashboards"]
+    }
+    assert returned_names == expected_names