> browse/registry

> doc-coauthoring

Guide users through a structured workflow for co-authoring documentation. Use when user wants to write documentation, proposals, technical specs, decision docs, or similar structured content. This workflow helps users efficiently transfer context, refine content through iteration, and verify the doc works for readers. Trigger when user mentions writing docs, creating proposals, drafting specs, or similar documentation tasks.

> API Integration Specialist

Expert in integrating third-party APIs with proper authentication, error handling, rate limiting, and retry logic. Use when integrating REST APIs, GraphQL endpoints, webhooks, or external services. Specializes in OAuth flows, API key management, request/response transformation, and building robust API clients.

> sentry

Use when the user asks to inspect Sentry issues or events, summarize recent production errors, or pull basic Sentry health data via the Sentry API; perform read-only queries with the bundled script and require `SENTRY_AUTH_TOKEN`.

> aspnet-core

Build, review, refactor, or architect ASP.NET Core web applications using current official guidance for .NET web development. Use when working on Blazor Web Apps, Razor Pages, MVC, Minimal APIs, controller-based Web APIs, SignalR, gRPC, middleware, dependency injection, configuration, authentication, authorization, testing, performance, deployment, or ASP.NET Core upgrades.

> gh-address-comments

Help address review/issue comments on the open GitHub PR for the current branch using gh CLI; verify gh auth first and prompt the user to authenticate if not logged in.

> claude-code-usage

[AUTO-INVOKE] MUST be invoked at the START of each new coding session. Covers context management, task strategies, and Foundry-specific workflows. Trigger: beginning of any new conversation or coding session in a Solidity/Foundry project.

> mem0

You are an expert in Mem0, the memory infrastructure for AI applications. You help developers add persistent, personalized memory to LLM-powered apps and agents — storing user preferences, conversation history, facts, and context that persists across sessions, enabling AI that remembers users, learns from interactions, and provides increasingly personalized responses.

> composio

You are an expert in Composio, the platform that gives AI agents access to 250+ external tools and APIs with managed authentication. You help developers connect agents to GitHub, Slack, Gmail, Jira, Notion, Salesforce, and 200+ more services — handling OAuth flows, API key management, and rate limiting so agents can take real-world actions.

> playwright-testing

Write and maintain end-to-end tests with Playwright. Use when someone asks to "add e2e tests", "test my web app", "set up Playwright", "write browser tests", "test login flow", "visual regression testing", "test across browsers", or "automate UI testing". Covers test setup, page objects, authentication, API mocking, visual comparisons, and CI integration.

> browserbase

You are an expert in BrowserBase, the cloud platform for running headless browsers at scale. You help developers deploy browser-based automations, AI agents, and web scraping pipelines using managed Chromium instances with residential proxies, session recording, stealth mode, and parallel execution — without managing browser infrastructure.

> burp-suite

Test web application security with Burp Suite. Use when a user asks to intercept HTTP traffic, test for web vulnerabilities, fuzz API endpoints, analyze authentication flows, or perform manual web application pentesting.

> class-variance-authority

Define component variants with CVA. Use when creating variant-based components with Tailwind, building design system tokens, or managing complex conditional class names in React.

> clerk-auth

Add authentication to web apps with Clerk — social login, email/password, magic links, organizations, RBAC, session management, webhooks, and multi-framework support. Use when tasks involve user authentication, team/org management, role-based access control, or integrating auth into Next.js, React, Remix, or Express applications.

> firebase

Expert guidance for Firebase, Google's platform for building and scaling web and mobile applications. Helps developers set up authentication, Firestore/Realtime Database, Cloud Functions, hosting, storage, and analytics using Firebase's SDK and CLI.

> graphql

Build and consume GraphQL APIs. Use when a user asks to create a GraphQL server, write GraphQL schemas, implement resolvers, set up subscriptions, build a GraphQL API, add authentication to GraphQL, optimize queries with DataLoader, implement pagination, handle file uploads, generate types from schema, consume a GraphQL endpoint, or migrate from REST to GraphQL. Covers Apollo Server, Apollo Client, schema design, resolvers, subscriptions, federation, and production patterns.

> hapi

You are an expert in Hapi.js, the configuration-centric enterprise framework for Node.js. You help developers build production APIs with built-in input validation (Joi), authentication strategies, plugin architecture, caching, rate limiting, and comprehensive request lifecycle hooks — designed for teams that need structure, security, and testability without third-party middleware sprawl.

> elysia

Build high-performance APIs with Elysia on Bun. Use when someone asks to "create an API with Bun", "build a REST API with Elysia", "set up WebSocket server on Bun", "type-safe API with Eden Treaty", "Elysia plugin", or "fastest TypeScript HTTP framework". Covers REST routes, WebSocket, validation with TypeBox, Eden Treaty type-safe client, plugins, auth guards, and OpenAPI/Swagger generation.

> hotjar

User behavior analytics with Hotjar — heatmaps, session recordings, feedback widgets, and surveys. Covers script installation, JavaScript API for custom events and user attributes, survey API, integration with analytics platforms like Google Analytics and Mixpanel, and privacy controls. Use when tasks involve understanding how users interact with a page visually, debugging UX issues with session recordings, or collecting user feedback with surveys.

> lucia-auth

You are an expert in Lucia, the lightweight authentication library for TypeScript. You help developers implement session-based authentication with email/password, OAuth (Google, GitHub, Discord), magic links, and two-factor authentication — providing a simple, database-agnostic auth layer that you understand and control, without the complexity of full auth platforms.

> jwt-handler

When the user needs to generate, validate, refresh, or debug JSON Web Tokens. Use when the user mentions "JWT," "access token," "refresh token," "token rotation," "token expiration," "token validation," "bearer token," or "decode JWT." Handles secure token lifecycle including signing, verification, refresh rotation, and revocation. For full auth system design, see auth-system-setup.