
Retrieve up-to-date documentation for software libraries, frameworks, and components via the Context7 API. This skill should be used when looking up documentation for any programming library or framework, finding code examples for specific APIs or features, verifying correct usage of library functions, or obtaining current information about library APIs that may have changed since training.
ClickHouse database patterns, query optimization, analytics, and data engineering best practices for high-performance analytical workloads.
Universal coding standards, best practices, and patterns for TypeScript, JavaScript, React, and Node.js development.
Automatically extract reusable patterns from Claude Code sessions and save them as learned skills for future use.
This skill provides comprehensive guidance for working with the nix-config framework - a platform-agnostic modular configuration system for NixOS and Darwin (macOS). Use this skill when adding new modules, hosts, users, or services; when troubleshooting configuration issues; or when modifying any aspect of the nix-config/nix-secrets ecosystem.
# Project Guidelines Skill (Example) This is an example of a project-specific skill. Use this as a template for your own projects. Based on a real production application: [Zenith](https://zenith.chat) - AI-powered customer discovery platform. --- ## When to Use Reference this skill when working on the specific project it's designed for. Project skills contain: - Architecture overview - File structure - Code patterns - Testing requirements - Deployment workflow --- ## Architecture Overview
Use this skill when adding authentication, handling user input, working with secrets, creating API endpoints, or implementing payment/sensitive features. Provides comprehensive security checklist and patterns.
Tooling and verification. Apply when encountering unfamiliar third-party libraries, framework updates, uncertain parameter types, verifying best practices, or uncertain API parameters.
Guide for creating effective skills. This skill should be used when users want to create a new skill (or update an existing skill) that extends Claude's capabilities with specialized knowledge, workflows, or tool integrations.
Suggests manual context compaction at logical intervals to preserve context through task phases rather than arbitrary auto-compaction.
Use this skill when writing new features, fixing bugs, or refactoring code. Enforces test-driven development with 80%+ coverage including unit, integration, and E2E tests.
# Verification Loop Skill A comprehensive verification system for Claude Code sessions. ## When to Use Invoke this skill: - After completing a feature or significant code change - Before creating a PR - When you want to ensure quality gates pass - After refactoring ## Verification Phases ### Phase 1: Build Verification ```bash # Check if project builds npm run build 2>&1 | tail -20 # OR pnpm build 2>&1 | tail -20 ``` If build fails, STOP and fix before continuing. ### Phase 2: Type Check
Documentation standards. Apply when completing full feature development, introducing new architecture patterns, or adding new public APIs.
Review UI code for Web Interface Guidelines compliance. Use when asked to "review my UI", "check accessibility", "audit design", "review UX", or "check my site against best practices".
React and Next.js performance optimization guidelines from Vercel Engineering. This skill should be used when writing, reviewing, or refactoring React/Next.js code to ensure optimal performance patterns. Triggers on tasks involving React components, Next.js pages, data fetching, bundle optimization, or performance improvements.
Architectural thinking and code review. Apply for architecture decisions, complexity judgment, code taste, over-engineering rejection, code review, analysis, evaluation, or optimization.
Git workflow standards. Apply when committing changes, creating pull requests, or managing branches.
Frontend development patterns for React, Next.js, state management, performance optimization, and UI best practices.
# Eval Harness Skill A formal evaluation framework for Claude Code sessions, implementing eval-driven development (EDD) principles. ## Philosophy Eval-Driven Development treats evals as the "unit tests of AI development": - Define expected behavior BEFORE implementation - Run evals continuously during development - Track regressions with each change - Use pass@k metrics for reliability measurement ## Eval Types ### Capability Evals Test if Claude can do something it couldn't before: ```mark
Backend architecture patterns, API design, database optimization, and server-side best practices for Node.js, Express, and Next.js API routes.