sentry

Instrument and discover analytics events in Sentry's frontend UI. Use when adding tracking to buttons, pages, modals, or custom interactions, when defining new analytics events, when searching for existing events, when auditing analytics coverage for a feature, or when answering questions about how users interact with a feature. Trigger on "add analytics", "track event", "instrument analytics", "analytics event", "track click", "track page view", "add tracking", "what events exist for", "audit analytics", "how many people", "how many users", "are people using", "is anyone clicking", "usage of", "who is using".

Reference and active migration guide for Sentry's cell architecture. Explains what cells and localities are and why they're different, how requests reach cells via Synapse API routing, ingestion routing, and the control silo gateway, and how to safely query cross-cell data without silently missing results. The migration section covers how to do migration work: draining the URL_NAME_TO_ACTION registry in test_urls.py to zero (with a recipe for each action type), rolling deploy safety and the two-phase pattern required by independent sentry/getsentry deploys, and the region -> cell rename including what not to rename (DB columns, AWS refs, uptime regions, billing address). Also documents known issues with proposed fixes: integration TeamLinkageView routing, Jira cross-cell fan-out, and relocation endpoint routing.

Generate Django database migrations for Sentry. Use when creating migrations, adding/removing columns or tables, adding indexes, or resolving migration conflicts.

Guide for creating forms using Sentry's new form system. Use when implementing forms, form fields, validation, or auto-save functionality.

Guide for migrating forms from the legacy JsonForm/FormModel system to the new TanStack-based form system.

Create a new ESLint rule with tests for eslintPluginScraps. Use when asked to "create a lint rule", "add an eslint rule", "scaffold a rule", "write a new scraps rule", or "new design system lint rule". Covers rule creation, test authoring, registration, and autofix implementation.

Guide for adding new actions to Sentry's Command+K palette. Use when implementing new cmdk actions, registering page-level or global actions, building async resource pickers, or adding contextual actions to a view.

Design Django ORM models for Sentry following architectural conventions for silos, replication, relocation, and foreign keys. Use when adding a new Django model, designing a model for a feature, deciding where data should live, picking a foreign key type, or refactoring an existing model's silo placement. Trigger on "add a Django model", "create a model", "design a model for X", "new database table", "store this data in the DB", "I need to track Y", "model for [feature]". Not for Pydantic models, dataclasses, ML models, or Protobuf — this is specifically for Django ORM models in the Sentry codebase.

Guide for creating, updating, and deprecating hybrid cloud RPC services in Sentry. Use when asked to "add RPC method", "create RPC service", "hybrid cloud service", "new RPC model", "deprecate RPC method", "remove RPC endpoint", "cross-silo service", "cell RPC", or "control silo service". Covers service scaffolding, method signatures, RPC models, cell resolvers, testing, and safe deprecation workflows.

Sentry-specific security review based on real vulnerability history. Use when reviewing Sentry endpoints, serializers, or views for security issues. Trigger keywords: "sentry security review", "check for IDOR", "access control review", "org scoping", "cross-org", "security audit endpoint".

Fix violations of an eslintPluginScraps rule across the codebase. Use when asked to "fix lint violations", "apply a lint rule", "fix scraps rule errors", "roll out a lint rule", "enforce a rule codebase-wide", or "fix design system lint". Covers manual fixes, autofix, batching, and codemod strategies for large-scale rollouts.

Guide for creating and maintaining outbox-based eventually consistent operations in Sentry. Most commonly used for cross-silo data replication, but applicable anywhere eventual consistency is needed — including single-silo deferred side effects, audit logging, and event fanout. Use when asked to "add outbox", "add outbox replication", "replicate model to control silo", "replicate model to cell", "add outbox category", "write outbox signal receiver", "debug stuck outboxes", "outbox not processing", "data not replicating", "test outbox", "migrate model to use outboxes", "backfill outbox data", "outbox coalescing", "ReplicatedCellModel", "ReplicatedControlModel", "OutboxCategory", "OutboxScope", or "outbox_runner". Covers model mixins, category registration, signal receivers, testing, backfill, and debugging workflows.

Generate hybrid cloud tests for the Sentry codebase. Use when asked to "generate HC test", "create hybrid cloud test", "write HC test", "add HC test", "write RPC test", "test RPC service", "silo test", "cross-silo test", "outbox test", "API gateway test", or "endpoint silo test". Covers RPC service tests, API gateway tests, outbox pattern tests, and API endpoint tests with silo decorators.

Review Sentry Python and Django changes for bug patterns drawn from real production issues. Use when reviewing a backend diff or PR, checking Warden findings, auditing the current branch, reviewing production-error patterns, or looking for common regressions in `src/` and `tests/`.

Generate snapshot test files for Sentry frontend React components. Use when asked to "generate snapshot tests", "add snapshot tests", "create visual snapshots", "write snapshot tests", "add visual regression tests", or "snapshot this component". Accepts an optional component path or name via $ARGUMENTS.

Guide for using Sentry's layout and text primitives. Use when implementing UI components, layouts, or typography. Enforces use of core components over styled components.

Review Sentry React and TypeScript changes for bug patterns drawn from real production issues. Use when reviewing a frontend diff or PR, checking Warden findings, auditing the current branch, reviewing production-error patterns, or looking for common regressions in `static/`.

Set up and manage the Sentry development environment using devenv. Handles fresh setup, updating existing environments, starting dev services, and troubleshooting. Use when asked to "set up sentry", "setup dev environment", "get sentry running", "start dev server", "devenv setup", "devservices not working", "sentry won't start", or any development environment issue.

Guide for adding notifications, custom renderers, or new providers to Sentry's NotificationPlatform. Use when asked to "add notification", "new notification", "notification platform", "send notification", "notification template", "notification renderer", "notification provider", "NotificationPlatform", "notify user", "send email notification", "send slack notification".

Create or update component documentation in Sentry's MDX stories format. Use when asked to "document a component", "add stories", "write component docs", "create an mdx file", "add a stories.mdx", or document a design system component. Generates structured MDX with live demos, accessibility guidance, and auto-generated API docs from TypeScript types.