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Claude Skills

The open format is called Agent Skills and works in Claude Code, Codex, Cursor and other agents — most people know it as Claude Skills.

Every Agent Skill we could find on GitHub, deduplicated by content. 79 870 files from 1 769 authors, of which 62 217 are unique — the rest is the same skill repackaged into someone else's repository. For each one: what it weighs in tokens, whether it ships runnable scripts, and which MCP servers it needs.

62 217
unique skills
out of 79 870 files found on GitHub
17 653
are copies
same content, someone else's repository
1 743
tokens, median
what a typical skill costs you in context
7 935
name collisions
two skills with one name cannot sit side by side

23 401–23 460 of 62 217

page 391 of 1 037
Prompt Optimizer
by loulanyue

>-

4k tokens
Pytorch Patterns
by loulanyue

PyTorch deep learning patterns and best practices for building robust, efficient, and reproducible training pipelines, model architectures, and data loading.

3k tokens
Python Testing
by loulanyue

pytest、TDD手法、フィクスチャ、モック、パラメータ化、カバレッジ要件を使用したPythonテスト戦略。

5k tokens
Regex Vs LLM Structured Text
by loulanyue

Decision framework for choosing between regex and LLM when parsing structured text — start with regex, add LLM only for low-confidence edge cases.

2k tokens
Quality Nonconformance
by loulanyue

>

8k tokens
Ralphinho Rfc Pipeline
by loulanyue

RFC-driven multi-agent DAG execution pattern with quality gates, merge queues, and work unit orchestration.

456 tokens
Returns Reverse Logistics
by loulanyue

>

6k tokens
Rules Distill
by loulanyue

Scan skills to extract cross-cutting principles and distill them into rules — append, revise, or create new rule files

2k tokens
Rust Patterns
by loulanyue

Idiomatic Rust patterns, ownership, error handling, traits, concurrency, and best practices for building safe, performant applications.

3k tokens
Search First
by loulanyue

Research-before-coding workflow. Search for existing tools, libraries, and patterns before writing custom code. Invokes the researcher agent.

2k tokens
Rust Testing
by loulanyue

Rust testing patterns including unit tests, integration tests, async testing, property-based testing, mocking, and coverage. Follows TDD methodology.

3k tokens
Skill Stocktake
by loulanyue

Use when auditing Claude skills and commands for quality. Supports Quick Scan (changed skills only) and Full Stocktake modes with sequential subagent batch evaluation.

2k tokens
Security Scan
by loulanyue

AgentShield を使用して、Claude Code の設定(.claude/ ディレクトリ)のセキュリティ脆弱性、設定ミス、インジェクションリスクをスキャンします。CLAUDE.md、settings.json、MCP サーバー、フック、エージェント定義をチェックします。

2k tokens zh
Springboot Patterns
by loulanyue

Spring Boot architecture patterns, REST API design, layered services, data access, caching, async processing, and logging. Use for Java Spring Boot backend work.

3k tokens
Security Review
by loulanyue

認証の追加、ユーザー入力の処理、シークレットの操作、APIエンドポイントの作成、支払い/機密機能の実装時にこのスキルを使用します。包括的なセキュリティチェックリストとパターンを提供します。

7k tokens
Springboot Tdd
by loulanyue

Test-driven development for Spring Boot using JUnit 5, Mockito, MockMvc, Testcontainers, and JaCoCo. Use when adding features, fixing bugs, or refactoring.

1k tokens
Springboot Security
by loulanyue

Spring Security best practices for authn/authz, validation, CSRF, secrets, headers, rate limiting, and dependency security in Java Spring Boot services.

1k tokens
Springboot Verification
by loulanyue

Verification loop for Spring Boot projects: build, static analysis, tests with coverage, security scans, and diff review before release or PR.

715 tokens zh
Swift Actor Persistence
by loulanyue

Thread-safe data persistence in Swift using actors — in-memory cache with file-backed storage, eliminating data races by design.

1k tokens
Strategic Compact
by loulanyue

任意の自動コンパクションではなく、タスクフェーズを通じてコンテキストを保持するための論理的な間隔での手動コンパクションを提案します。

720 tokens zh
Swift Concurrency 6 2
by loulanyue

Swift 6.2 Approachable Concurrency — single-threaded by default, @concurrent for explicit background offloading, isolated conformances for main actor types.

2k tokens
Swiftui Patterns
by loulanyue

SwiftUI architecture patterns, state management with @Observable, view composition, navigation, performance optimization, and modern iOS/macOS UI best practices.

2k tokens
Swift Protocol Di Testing
by loulanyue

Protocol-based dependency injection for testable Swift code — mock file system, network, and external APIs using focused protocols and Swift Testing.

2k tokens
Team Builder
by loulanyue

Interactive agent picker for composing and dispatching parallel teams

2k tokens
Tdd Workflow
by loulanyue

新機能の作成、バグ修正、コードのリファクタリング時にこのスキルを使用します。ユニット、統合、E2Eテストを含む80%以上のカバレッジでテスト駆動開発を強制します。

3k tokens
Verification Loop
by loulanyue

A comprehensive verification system for Claude Code sessions.

809 tokens zh
Videodb
by loulanyue

See, Understand, Act on video and audio. See- ingest from local files, URLs, RTSP/live feeds, or live record desktop; return realtime context and playable stream links. Understand- extract frames, build visual/semantic/temporal indexes, and search moments with timestamps and auto-clips. Act- transcode and normalize (codec, fps, resolution, aspect ratio), perform timeline edits (subtitles, text/image overlays, branding, audio overlays, dubbing, translation), generate media assets (image, audio, video), and create real time alerts for events from live streams or desktop capture.

31k tokens
Video Editing
by loulanyue

AI-assisted video editing workflows for cutting, structuring, and augmenting real footage. Covers the full pipeline from raw capture through FFmpeg, Remotion, ElevenLabs, fal.ai, and final polish in Descript or CapCut. Use when the user wants to edit video, cut footage, create vlogs, or build video content.

3k tokens
X API
by loulanyue

X/Twitter API integration for posting tweets, threads, reading timelines, search, and analytics. Covers OAuth auth patterns, rate limits, and platform-native content posting. Use when the user wants to interact with X programmatically.

1k tokens
Agent Eval
by loulanyue

Head-to-head comparison of coding agents (Claude Code, Aider, Codex, etc.) on custom tasks with pass rate, cost, time, and consistency metrics

1k tokens
Visa Doc Translate
by loulanyue

Translate visa application documents (images) to English and create a bilingual PDF with original and translation

2k tokens
Agentic Engineering
by loulanyue

Operate as an agentic engineer using eval-first execution, decomposition, and cost-aware model routing.

432 tokens
AI First Engineering
by loulanyue

Engineering operating model for teams where AI agents generate a large share of implementation output.

334 tokens
AI Regression Testing
by loulanyue

Regression testing strategies for AI-assisted development. Sandbox-mode API testing without database dependencies, automated bug-check workflows, and patterns to catch AI blind spots where the same model writes and reviews code.

3k tokens
Android Clean Architecture
by loulanyue

Clean Architecture patterns for Android and Kotlin Multiplatform projects — module structure, dependency rules, UseCases, Repositories, and data layer patterns.

2k tokens
Architecture Decision Records
by loulanyue

Capture architectural decisions made during Claude Code sessions as structured ADRs. Auto-detects decision moments, records context, alternatives considered, and rationale. Maintains an ADR log so future developers understand why the codebase is shaped the way it is.

2k tokens
Article Writing
by loulanyue

Write articles, guides, blog posts, tutorials, newsletter issues, and other long-form content in a distinctive voice derived from supplied examples or brand guidance. Use when the user wants polished written content longer than a paragraph, especially when voice consistency, structure, and credibility matter.

841 tokens
Backend Patterns
by loulanyue

Backend architecture patterns, API design, database optimization, and server-side best practices for Node.js, Express, and Next.js API routes.

3k tokens
Autonomous Loops
by loulanyue

Patterns and architectures for autonomous Claude Code loops — from simple sequential pipelines to RFC-driven multi-agent DAG systems.

6k tokens
Blueprint
by loulanyue

>- Turn a one-line objective into a step-by-step construction plan for multi-session, multi-agent engineering projects. Each step has a self-contained context brief so a fresh agent can execute it cold. Includes adversarial review gate, dependency graph, parallel step detection, anti-pattern catalog, and plan mutation protocol. complex multi-PR task, or describes work that needs multiple sessions. than 3 tool calls, or user says "just do it".

1k tokens
Claude API
by loulanyue

Anthropic Claude API patterns for Python and TypeScript. Covers Messages API, streaming, tool use, vision, extended thinking, batches, prompt caching, and Claude Agent SDK. Use when building applications with the Claude API or Anthropic SDKs.

2k tokens
Carrier Relationship Management
by loulanyue

> Codified expertise for managing carrier portfolios, negotiating freight rates, tracking carrier performance, allocating freight, and maintaining strategic carrier relationships. Informed by transportation managers with 15+ years experience. Includes scorecarding frameworks, RFP processes, market intelligence, and compliance vetting. Use when managing carriers, negotiating rates, evaluating carrier performance, or building freight strategies.

6k tokens
Bun Runtime
by loulanyue

Bun as runtime, package manager, bundler, and test runner. When to choose Bun vs Node, migration notes, and Vercel support.

703 tokens
Claude Devfleet
by loulanyue

Orchestrate multi-agent coding tasks via Claude DevFleet — plan projects, dispatch parallel agents in isolated worktrees, monitor progress, and read structured reports.

1k tokens
Clickhouse Io
by loulanyue

ClickHouse database patterns, query optimization, analytics, and data engineering best practices for high-performance analytical workloads.

3k tokens
Codebase Onboarding
by loulanyue

Analyze an unfamiliar codebase and generate a structured onboarding guide with architecture map, key entry points, conventions, and a starter CLAUDE.md. Use when joining a new project or setting up Claude Code for the first time in a repo.

2k tokens
Coding Standards
by loulanyue

Universal coding standards, best practices, and patterns for TypeScript, JavaScript, React, and Node.js development.

3k tokens
Configure Ecc
by loulanyue

Interactive installer for awesome claude notes — guides users through selecting and installing skills and rules to user-level or project-level directories, verifies paths, and optionally optimizes installed files.

4k tokens
Compose Multiplatform Patterns
by loulanyue

Compose Multiplatform and Jetpack Compose patterns for KMP projects — state management, navigation, theming, performance, and platform-specific UI.

2k tokens
Content Engine
by loulanyue

Create platform-native content systems for X, LinkedIn, TikTok, YouTube, newsletters, and repurposed multi-platform campaigns. Use when the user wants social posts, threads, scripts, content calendars, or one source asset adapted cleanly across platforms.

698 tokens
Content Hash Cache Pattern
by loulanyue

Cache expensive file processing results using SHA-256 content hashes — path-independent, auto-invalidating, with service layer separation.

1k tokens
Context Budget
by loulanyue

Audits Claude Code context window consumption across agents, skills, MCP servers, and rules. Identifies bloat, redundant components, and produces prioritized token-savings recommendations.

1k tokens
Continuous Agent Loop
by loulanyue

Patterns for continuous autonomous agent loops with quality gates, evals, and recovery controls.

279 tokens
Continuous Learning
by loulanyue

Automatically extract reusable patterns from Claude Code sessions and save them as learned skills for future use.

2k tokens scripts
Cpp Coding Standards
by loulanyue

C++ coding standards based on the C++ Core Guidelines (isocpp.github.io). Use when writing, reviewing, or refactoring C++ code to enforce modern, safe, and idiomatic practices.

6k tokens
Crosspost
by loulanyue

Multi-platform content distribution across X, LinkedIn, Threads, and Bluesky. Adapts content per platform using content-engine patterns. Never posts identical content cross-platform. Use when the user wants to distribute content across social platforms.

1k tokens
Cpp Testing
by loulanyue

Use only when writing/updating/fixing C++ tests, configuring GoogleTest/CTest, diagnosing failing or flaky tests, or adding coverage/sanitizers.

2k tokens
Database Migrations
by loulanyue

Database migration best practices for schema changes, data migrations, rollbacks, and zero-downtime deployments across PostgreSQL, MySQL, and common ORMs (Prisma, Drizzle, Kysely, Django, TypeORM, golang-migrate).

3k tokens
Customs Trade Compliance
by loulanyue

> Codified expertise for customs documentation, tariff classification, duty optimization, restricted party screening, and regulatory compliance across multiple jurisdictions. Informed by trade compliance specialists with 15+ years experience. Includes HS classification logic, Incoterms application, FTA utilization, and penalty mitigation. Use when handling customs clearance, tariff classification, trade compliance, import/export documentation, or duty optimization.

7k tokens
Deployment Patterns
by loulanyue

Deployment workflows, CI/CD pipeline patterns, Docker containerization, health checks, rollback strategies, and production readiness checklists for web applications.

3k tokens

Claude Skills — questions

Answers built from the skills we actually parsed.

What is a Claude Skill?
A folder with a SKILL.md file: instructions that teach an agent to do one thing well, optionally with scripts and reference files alongside. The format is open and called Agent Skills — Claude Code, Codex and other agents read the same files. It is not a program you run; it is knowledge the agent loads when the task calls for it.
How is a skill different from an MCP server?
A server gives the agent new abilities — it connects to something and exposes tools. A skill gives the agent knowledge: how to use what it already has. They combine, and often literally: 11 541 of the skills here declare which MCP servers they need to work.
Why are there fewer skills here than in other catalogues?
Because we deduplicate by content. Of 79 870 files found on GitHub, 62 217 are unique — the rest is the same skill copied into someone else's repository, word for word. Catalogues that count files rather than skills show every copy as a separate entry.
What does the token count mean?
A skill is loaded into the model's context when it is used, so its size is a running cost on every request that touches it. We measure the whole folder, not just SKILL.md: one official skill is 377 tokens, another drags 83 files of fonts behind it.
How do I install a skill?
Copy the skill folder into ~/.claude/skills for personal use, or into .claude/skills inside a project. The agent picks it up by the name in the SKILL.md header — which is worth checking: 7 935 skills here share a name with another skill, and two of them cannot sit side by side.