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Found 13,900 Skills
TanStack Query v5 server state management for React. Covers query/mutation patterns, v4-to-v5 migration (object syntax, gcTime, isPending, keepPreviousData), optimistic updates via useMutationState, SSR/hydration with HydrationBoundary, infinite queries, offline/PWA support, error boundaries with throwOnError, and React 19 Suspense integration. Use when building data fetching, fixing migration errors, debugging hydration mismatches, implementing caching strategies, or configuring mutations.
Analyze and build knowledge graph links in Obsidian vault. Find orphan notes, suggest connections, add backlinks, visualize link structure. Triggers on /graph, "analyze links", "find orphans", "suggest connections".
Expo Framework-specific guidelines. Includes best practices for Views, Blueprints, and Extensions.
Create beautiful, responsive HTML emails using React components with React Email. Build transactional emails with modern components, support internationalization, and integrate with email service providers like Resend. Use when creating welcome emails, password resets, notifications, order confirmations, or any HTML email templates.
Transform passive 'Verify X' test descriptions into active, observable test actions. Use when test ideas lack specificity, use vague language, or fail quality validation. Converts to action-verb format for clearer, more testable descriptions.
React 19+ patterns, performance optimization, and component architecture. Covers hooks, state management decision trees, data fetching with use() API, Server Components, React Compiler, bundle optimization, and re-render elimination. Use when building components, optimizing re-renders, fetching data, managing state, handling forms, structuring frontends, or reviewing React code.
Write a deterministic OK file to out/ok.txt.
API testing patterns with supertest, MSW, and Vitest. Covers integration testing for REST APIs, HTTP request mocking with Mock Service Worker v2, response assertions, schema validation, test organization, and framework-specific patterns for Express, Fastify, and Hono. Use when writing integration tests for REST APIs, mocking HTTP requests, or testing API endpoints. Use for api-test, supertest, msw, mock-service-worker, integration-test, http-mock, endpoint-test, request-test.
Automate versioning and changelog generation using semantic versioning principles. Configure release automation, version bumping, and changelog tools. Use when implementing version management or automating release processes.
Bug-to-test pipeline: reproduce the bug as a failing test first, then fix. The regression test lives forever.
TDD feature build loop: spec (RED) → implement (GREEN) → refactor. Pass the feature name as argument.
Build reactive backends with Convex functions, schema validation, auth integration, and deployment workflows.