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. 79 341 files from 1 736 authors, of which 61 700 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.

61 700

unique skills

out of 79 341 files found on GitHub

17 641

are copies

same content, someone else's repository

1 739

tokens, median

what a typical skill costs you in context

7 879

name collisions

two skills with one name cannot sit side by side

421–480 of 61 700

page 8 of 1 029

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Twitter Algorithm Optimizer

Analyze and optimize tweets for maximum reach using Twitter's open-source algorithm insights. Rewrite and edit user tweets to improve engagement and visibility based on how the recommendation system ranks content.

You MUST use this before any creative work - creating features, building components, adding functionality, or modifying behavior. Explores user intent, requirements and design before implementation.

Execute read-only SQL queries against multiple PostgreSQL databases. Use when: (1) querying PostgreSQL databases, (2) exploring database schemas/tables, (3) running SELECT queries for data analysis, (4) checking database contents. Supports multiple database connections with descriptions for intelligent auto-selection. Blocks all write operations (INSERT, UPDATE, DELETE, DROP, etc.) for safety.

Crypto wallet operations via the awal CLI — sign in, check balances, send USDC/ETH/POL/SOL, trade tokens, fund the wallet, and use the x402 payment protocol to discover paid services, pay for API calls, monetize an API, or query onchain data. Use whenever the user mentions signing in, login, authentication, wallet status, balance, address, sending money, paying someone, transferring tokens, ENS names, swapping/trading/converting tokens, funding/topping up/onramp, USDC, ETH, POL, SOL, the x402 bazaar, paid APIs, monetizing an endpoint, or querying onchain data on Base.

Advanced Evaluation

by christophacham

This skill should be used when the user asks to "implement LLM-as-judge", "compare model outputs", "create evaluation rubrics", "mitigate evaluation bias", or mentions direct scoring, pairwise comparison, position bias, evaluation pipelines, or automated quality assessment.

14k tokens scripts

Agent Mail Automation

by christophacham

Automate Agent Mail tasks via Rube MCP (Composio). Always search tools first for current schemas.

741 tokens needs MCP

Agentql Automation

by christophacham

Automate Agentql tasks via Rube MCP (Composio). Always search tools first for current schemas.

730 tokens needs MCP

Agenty Automation

by christophacham

Automate Agenty tasks via Rube MCP (Composio). Always search tools first for current schemas.

726 tokens needs MCP

AI Ml API Automation

by christophacham

Automate AI ML API tasks via Rube MCP (Composio). Always search tools first for current schemas.

738 tokens needs MCP

All Images AI Automation

by christophacham

Automate All Images AI tasks via Rube MCP (Composio). Always search tools first for current schemas.

753 tokens needs MCP

Alttext AI Automation

by christophacham

Automate Alttext AI tasks via Rube MCP (Composio). Always search tools first for current schemas.

741 tokens needs MCP

Anthropic Administrator Automation

by christophacham

Automate Anthropic Admin tasks via Rube MCP (Composio). Always search tools first for current schemas.

774 tokens needs MCP

Anthropic Administrator Automation

by christophacham

Automate Anthropic Admin tasks via Rube MCP (Composio): API keys, usage, workspaces, and organization management. Always search tools first for current schemas.

1k tokens needs MCP

Apipie AI Automation

by christophacham

Automate Apipie AI tasks via Rube MCP (Composio). Always search tools first for current schemas.

738 tokens needs MCP

Appdrag Automation

by christophacham

Automate Appdrag tasks via Rube MCP (Composio). Always search tools first for current schemas.

730 tokens needs MCP

Astica AI Automation

by christophacham

Automate Astica AI tasks via Rube MCP (Composio). Always search tools first for current schemas.

738 tokens needs MCP

Bdi Mental States

by christophacham

This skill should be used when the user asks to "model agent mental states", "implement BDI architecture", "create belief-desire-intention models", "transform RDF to beliefs", "build cognitive agent", or mentions BDI ontology, mental state modeling, rational agency, or neuro-symbolic AI integration.

Bigml Automation

by christophacham

Automate Bigml tasks via Rube MCP (Composio). Always search tools first for current schemas.

723 tokens needs MCP

Bonsai Automation

by christophacham

Automate Bonsai tasks via Rube MCP (Composio). Always search tools first for current schemas.

726 tokens needs MCP

Browseai Automation

by christophacham

Automate Browseai tasks via Rube MCP (Composio). Always search tools first for current schemas.

734 tokens needs MCP

by christophacham

Performs arbitrary-precision arithmetic calculations including addition, subtraction, multiplication, division, and exponents. Use when the user asks to calculate, compute, or evaluate math expressions, or when precise decimal arithmetic is needed to avoid floating-point errors.

42k tokens scripts

Chatfai Automation

by christophacham

Automate Chatfai tasks via Rube MCP (Composio). Always search tools first for current schemas.

730 tokens needs MCP

Claid AI Automation

by christophacham

Automate Claid AI tasks via Rube MCP (Composio). Always search tools first for current schemas.

734 tokens needs MCP

Convolo AI Automation

by christophacham

Automate Convolo AI tasks via Rube MCP (Composio). Always search tools first for current schemas.

741 tokens needs MCP

Customgpt Automation

by christophacham

Automate Customgpt tasks via Rube MCP (Composio). Always search tools first for current schemas.

738 tokens needs MCP

Docsbot AI Automation

by christophacham

Automate Docsbot AI tasks via Rube MCP (Composio). Always search tools first for current schemas.

741 tokens needs MCP

Hedgefundmonitor

by christophacham

Query the OFR (Office of Financial Research) Hedge Fund Monitor API for hedge fund data including SEC Form PF aggregated statistics, CFTC Traders in Financial Futures, FICC Sponsored Repo volumes, and FRB SCOOS dealer financing terms. Access time series data on hedge fund size, leverage, counterparties, liquidity, complexity, and risk management. No API key or registration required. Use when working with hedge fund data, systemic risk monitoring, financial stability research, hedge fund leverage or leverage ratios, counterparty concentration, Form PF statistics, repo market data, or OFR financial research data.

by christophacham

Generate high-quality Product Requirements Documents (PRDs) for software systems and AI-powered features. Includes executive summaries, user stories, technical specifications, and risk analysis.

Project Development

by christophacham

This skill should be used when the user asks to "start an LLM project", "design batch pipeline", "evaluate task-model fit", "structure agent project", or mentions pipeline architecture, agent-assisted development, cost estimation, or choosing between LLM and traditional approaches.

17k tokens scripts

Ddd Context Mapping

by christophacham

Map relationships between bounded contexts and define integration contracts using DDD context mapping patterns.

Ddd Tactical Patterns

by christophacham

Apply DDD tactical patterns in code using entities, value objects, aggregates, repositories, and domain events with explicit invariants.

21risk Automation

by christophacham

Automate 21risk tasks via Rube MCP (Composio). Always search tools first for current schemas.

728 tokens needs MCP

2chat Automation

by christophacham

Automate 2chat tasks via Rube MCP (Composio). Always search tools first for current schemas.

724 tokens needs MCP

Ably Automation

by christophacham

Automate Ably tasks via Rube MCP (Composio). Always search tools first for current schemas.

719 tokens needs MCP

Abstract Automation

by christophacham

Automate Abstract tasks via Rube MCP (Composio). Always search tools first for current schemas.

734 tokens needs MCP

Abyssale Automation

by christophacham

Automate Abyssale tasks via Rube MCP (Composio). Always search tools first for current schemas.

734 tokens needs MCP

Accelo Automation

by christophacham

Automate Accelo tasks via Rube MCP (Composio). Always search tools first for current schemas.

726 tokens needs MCP

Accredible Certificates Automation

by christophacham

Automate Accredible Certificates tasks via Rube MCP (Composio). Always search tools first for current schemas.

790 tokens needs MCP

Acculynx Automation

by christophacham

Automate Acculynx tasks via Rube MCP (Composio). Always search tools first for current schemas.

734 tokens needs MCP

Active Campaign Automation

by christophacham

Automate ActiveCampaign tasks via Rube MCP (Composio). Always search tools first for current schemas.

758 tokens needs MCP

Addresszen Automation

by christophacham

Automate Addresszen tasks via Rube MCP (Composio). Always search tools first for current schemas.

741 tokens needs MCP

Adobe Automation

by christophacham

Automate Adobe tasks via Rube MCP (Composio). Always search tools first for current schemas.

723 tokens needs MCP

Adyntel Automation

by christophacham

Automate Adyntel tasks via Rube MCP (Composio). Always search tools first for current schemas.

730 tokens needs MCP

Aero Workflow Automation

by christophacham

Automate Aero Workflow tasks via Rube MCP (Composio). Always search tools first for current schemas.

753 tokens needs MCP

Aeroleads Automation

by christophacham

Automate Aeroleads tasks via Rube MCP (Composio). Always search tools first for current schemas.

738 tokens needs MCP

Affinda Automation

by christophacham

Automate Affinda tasks via Rube MCP (Composio). Always search tools first for current schemas.

730 tokens needs MCP

Affinity Automation

by christophacham

Automate Affinity tasks via Rube MCP (Composio). Always search tools first for current schemas.

734 tokens needs MCP

Agencyzoom Automation

by christophacham

Automate Agencyzoom tasks via Rube MCP (Composio). Always search tools first for current schemas.

741 tokens needs MCP

Agiled Automation

by christophacham

Automate Agiled tasks via Rube MCP (Composio). Always search tools first for current schemas.

726 tokens needs MCP

Agility Cms Automation

by christophacham

Automate Agility CMS tasks via Rube MCP (Composio). Always search tools first for current schemas.

745 tokens needs MCP

Ahrefs Automation

by christophacham

Automate SEO research with Ahrefs -- analyze backlink profiles, research keywords, track domain metrics history, audit organic rankings, and perform batch URL analysis through the Composio Ahrefs integration.

2k tokens needs MCP

Aivoov Automation

by christophacham

Automate Aivoov tasks via Rube MCP (Composio). Always search tools first for current schemas.

726 tokens needs MCP

Alchemy Automation

by christophacham

Automate Alchemy tasks via Rube MCP (Composio). Always search tools first for current schemas.

730 tokens needs MCP

Algodocs Automation

by christophacham

Automate Algodocs tasks via Rube MCP (Composio). Always search tools first for current schemas.

734 tokens needs MCP

Algolia Automation

by christophacham

Automate Algolia tasks via Rube MCP (Composio). Always search tools first for current schemas.

730 tokens needs MCP

Altoviz Automation

by christophacham

Automate Altoviz tasks via Rube MCP (Composio). Always search tools first for current schemas.

730 tokens needs MCP

Amara Automation

by christophacham

Automate Amara tasks via Rube MCP (Composio). Always search tools first for current schemas.

723 tokens needs MCP

Amazon Automation

by christophacham

Automate Amazon tasks via Rube MCP (Composio). Always search tools first for current schemas.

726 tokens needs MCP

Ambee Automation

by christophacham

Automate Ambee tasks via Rube MCP (Composio). Always search tools first for current schemas.

723 tokens needs MCP

Ambient Weather Automation

by christophacham

Automate Ambient Weather tasks via Rube MCP (Composio). Always search tools first for current schemas.

760 tokens needs MCP

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: 11 328 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 79 341 files found on GitHub, 61 700 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.