Guide for implementing Claude Code hooks - automated scripts that execute at specific workflow points. Use when building hooks, understanding hook events, or troubleshooting hook configuration.

Evaluate Agent Skill quality against official specifications. Use when reviewing SKILL.md files, auditing skill packages, improving skill design, or checking if a skill follows best practices. Provides 8-dimension scoring (120 points) with actionable improvements. Triggers on review skill, evaluate skill, audit skill, improve skill, skill quality, SKILL.md review.

Create software diagrams using Mermaid syntax. Use when users need to create, visualize, or document software through diagrams including class diagrams, sequence diagrams, flowcharts, ERDs, C4 architecture diagrams, state diagrams, git graphs, and other diagram types. Triggers include requests to diagram, visualize, model, map out, or show the flow of a system.

Complete guide to building AI chat applications with Vercel AI SDK. Orchestrates streaming routes, useChat integration, tool architecture, message handling, and UX patterns. Use when building production AI chatbots or assistants. Triggers on build AI chat, create chatbot, AI assistant, Vercel AI SDK app, chat application.

Curated collection of professional color and typography themes for styling artifacts — slides, docs, reports, landing pages. Use when applying visual themes to presentations, generating themed content, or creating custom brand palettes. Triggers on theme, color palette, font pairing, slide styling, presentation theme, brand colors.

Caching strategies, invalidation, eviction policies, HTTP caching, distributed caching, and anti-patterns. Use when designing cache layers, choosing eviction policies, debugging stale data, or optimizing read-heavy workloads.

React composition patterns for scalable component architecture. Use when refactoring components with boolean prop proliferation, building flexible component libraries, designing reusable component APIs, or working with compound components and context providers.

Write clear, concise prose for humans — documentation, READMEs, API docs, commit messages, error messages, UI text, reports, and explanations. Combines Strunk's rules for clearer prose with technical documentation patterns, structure templates, and review checklists.

Add, fix, or optimize schema markup and structured data. Use when the user mentions schema markup, structured data, JSON-LD, rich snippets, schema.org, FAQ schema, product schema, review schema, or breadcrumb schema.

WHAT: Turborepo monorepo build system - caching, task pipelines, and parallel execution for JS/TS projects. WHEN: User configures turbo.json, creates packages, sets up monorepo, shares code between apps, runs --affected builds, debugs cache misses, or has apps/packages directories. KEYWORDS: turborepo, turbo.json, monorepo, dependsOn, task pipeline, caching, remote cache, --filter, --affected, packages, workspace, pnpm workspace, npm workspace, build optimization

WHAT: Create Claude Code slash commands - reusable markdown workflows invoked with /command-name. WHEN: User wants to create, make, or add a slash command. User wants to automate a repetitive workflow or document a consistent process for reuse. KEYWORDS: "create a command", "make a slash command", "add a command", "new command", "/command", "automate this workflow", "make this repeatable"

Building native mobile UIs with Expo Router and React Native. Covers routing, navigation, styling, native controls, animations, and platform conventions following Apple Human Interface Guidelines.

Production Go concurrency patterns — goroutines, channels, sync primitives, context, worker pools, pipelines, and graceful shutdown. Use when building concurrent Go applications or debugging race conditions.

Find 10x product opportunities and high-leverage improvements. Use when the user wants strategic product thinking, mentions 10x, wants to find high-impact features, or asks what would make a product dramatically more valuable.

Unit, integration, and E2E testing patterns with framework-specific guidance. Use when asked to "write tests", "add test coverage", "testing strategy", "test this function", "create test suite", "fix flaky tests", or "improve test quality".

Postgres performance optimization and best practices from Supabase — covering indexing, connection management, RLS security, schema design, locking, data access patterns, and monitoring. Use when writing SQL, designing schemas, optimizing queries, or configuring Postgres.

Systematic task implementation using TDD, phase checkpoints, and structured commits. Ensures quality through red-green-refactor cycles, 80% coverage gates, and verification protocols before proceeding.

Plan content aligned with user personas and journey stages. Use when asked to "plan content," "create content strategy," "build editorial calendar," "map content to personas," "audit existing content," or when aligning marketing/docs content with user journeys defined in persona docs.

WHAT: Universal release workflow with auto-detection, multi-language changelogs, semantic versioning, and git tagging. WHEN: User wants to create a release, bump version, update changelog, push a new version, or prepare for deployment. KEYWORDS: "release", "发布", "new version", "新版本", "bump version", "update version", "更新版本", "push", "推送", "create release", "prepare release", "tag version"

Lightweight documentation capturing the context, decision, and consequences of significant technical choices. ADRs become the institutional memory of why things are built the way they are.