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. 79 354 files from 1 739 authors, of which 61 713 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.

61 713

unique skills

out of 79 354 files found on GitHub

17 641

are copies

same content, someone else's repository

1 738

tokens, median

what a typical skill costs you in context

7 879

name collisions

two skills with one name cannot sit side by side

56 161–56 220 of 61 713

page 937 of 1 029

Sort Most copied

Ue Materials Rendering

by ComeOnOliver

5k tokens

Ue Module Build System

by ComeOnOliver

4k tokens

Ue Networking Replication

Ue Procedural Generation

Ue Sequencer Cinematics

by ComeOnOliver

5k tokens

Ue Serialization Savegames

Ue World Level Streaming

Electron To Electrobun

Accessibility Compliance Accessibility Audit

by ComeOnOliver

409 tokens

Agent Orchestration Improve Agent

by ComeOnOliver

2k tokens

Agent Orchestration Multi Agent Optimize

API Testing Observability API Mock

by ComeOnOliver

415 tokens

Application Performance Performance Optimization

by ComeOnOliver

3k tokens

Attack Tree Construction

by ComeOnOliver

266 tokens

Auth Implementation Patterns

Backend Development Feature Development

by ComeOnOliver

3k tokens

Backend Security Coder

by ComeOnOliver

2k tokens

Backtesting Frameworks

by ComeOnOliver

283 tokens

Bash Defensive Patterns

Bats Testing Patterns

by ComeOnOliver

258 tokens

Bazel Build Optimization

by ComeOnOliver

2k tokens

Binary Analysis Patterns

C4 Architecture C4 Architecture

Cicd Automation Workflow Automate

Code Documentation Code Explain

by ComeOnOliver

388 tokens

Code Documentation Doc Generate

by ComeOnOliver

385 tokens

Code Refactoring Context Restore

by ComeOnOliver

2k tokens

Code Refactoring Refactor Clean

by ComeOnOliver

386 tokens

Code Refactoring Tech Debt

by ComeOnOliver

2k tokens

Code Review AI AI Review

by ComeOnOliver

4k tokens

Code Review Excellence

by ComeOnOliver

287 tokens

Codebase Cleanup Deps Audit

by ComeOnOliver

408 tokens

Codebase Cleanup Refactor Clean

by ComeOnOliver

382 tokens

Competitive Landscape

by ComeOnOliver

211 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: 11 329 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 79 354 files found on GitHub, 61 713 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: 7 879 skills here share a name with another skill, and two of them cannot sit side by side.