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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. 79 437 files from 1 744 authors, of which 61 785 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.

61 785
unique skills
out of 79 437 files found on GitHub
17 652
are copies
same content, someone else's repository
1 737
tokens, median
what a typical skill costs you in context
7 884
name collisions
two skills with one name cannot sit side by side

11 941–12 000 of 61 785

page 200 of 1 030
Owasp Docker
by microsoft
vendor

OWASP Docker Top 6 knowledge base for identifying, assessing, and remediating Docker container security risks.

8k tokens
Owasp LLM
by microsoft
vendor

OWASP Top 10 for LLM Applications (2025) knowledge base for identifying, assessing, and remediating large language model security risks.

19k tokens
Owasp Infrastructure
by microsoft
vendor

OWASP Infrastructure Top 10 knowledge base for identifying, assessing, and remediating internal IT infrastructure security risks.

12k tokens
Owasp Top 10
by microsoft
vendor

OWASP Top 10 for Web Applications (2025) knowledge base for identifying, assessing, and remediating web application security risks.

16k tokens
Owasp MCP
by microsoft
vendor

OWASP MCP Top 10 knowledge base for identifying, assessing, and remediating Model Context Protocol security risks.

11k tokens
Security Reviewer Formats
by microsoft
vendor

Format specifications and data contracts for the security reviewer orchestrator and its subagents.

4k tokens
Secure By Design
by microsoft
vendor

Secure by Design principles knowledge base for assessing security-first design, development, and deployment across the software lifecycle.

13k tokens
Pr Reference
by microsoft
vendor

Generates PR reference XML with commit history and unified diffs between branches, with extension and path filtering. Use when creating pull request descriptions, preparing code reviews, analyzing branch changes, discovering work items from diffs, or generating structured diff summaries.

31k tokens scripts
Supply Chain Security
by microsoft
vendor

Software supply chain security reference for OpenSSF Scorecard, SLSA, Sigstore, SBOM, and posture/backlog taxonomies.

8k tokens
Telemetry Foundations
by microsoft
vendor

Declarative OpenTelemetry-aligned telemetry vocabulary and instrumentation conventions for traces, metrics, logs, and PII handling

3k tokens
Vex
by microsoft
vendor

OpenVEX v0.2.0 specification reference plus VEX management playbooks - Brought to you by microsoft/hve-core.

32k tokens scripts
Release
by hyhmrright

> all four plugin manifests and every version-bearing text file (README badges, docs site metadata), write the CHANGELOG entry, validate, then commit, push, tag, and publish the GitHub release. Triggers when the maintainer asks to "release", "cut a release", "ship a new version", or "bump and publish" brooks-lint. (use `npm run bump` directly), CHANGELOG edits alone, or questions about the release process that don't ask to perform it.

667 tokens
Brooks Audit
by hyhmrright

> Architecture audit that maps module dependencies, checks layering integrity, and flags structural decay across a codebase, drawing on twelve classic engineering books. check for circular imports, understand how the codebase is organized, or asks "does this follow clean architecture?" or "why does everything depend on everything?". or "give me a codebase tour" (use onboarding mode). questions — this skill analyzes structural/module-level concerns, not individual functions.

3k tokens
New Skill
by hyhmrright

> Scaffold a new brooks-lint analysis skill so it passes `npm run validate` and `npm run evals` on the first try — generates skills/{name}/SKILL.md (with the ranges) plus skills/{name}/{name}-guide.md (sequentially numbered steps), then appends paired eval scenarios. Triggers when the maintainer asks to "add a new skill", "scaffold a skill", or "create a brooks-lint mode". an existing skill, or authoring skills for some other plugin.

723 tokens
Brooks Sweep
by hyhmrright

> architecture, tech debt, and test quality — then applies fixes directly to the codebase. Safe changes are auto-applied; risky changes are confirmed before execution. Drawing on twelve classic engineering books. issues", "clean up the whole project", or asks for a single command that both diagnoses and remediates quality problems. findings without code changes; single-dimension reviews (use the focused skill checks, HTTP /health endpoints, Kubernetes probes, database health, or application uptime.

4k tokens
Brooks Harness
by hyhmrright

> Maintenance orchestrator for the brooks-lint plugin itself. Runs a sequential subagent pipeline — author → eval → QA → trigger-audit → release — to add or edit a skill, refresh the eval suite, keep the four manifests + all README translations + CHANGELOG + AGENTS/GEMINI in sync, audit trigger boundaries, and cut releases. Drives the five agents in .claude/agents/ (skill-author, eval-curator, consistency-qa, trigger-boundary-auditor, release-manager). "edit the brooks-debt guide", "update the eval suite", "fix the trigger descriptions", "make this change and validate it", "release brooks-lint", "bump and audit", "do the X part again". (that's brooks-review / brooks-audit / brooks-debt / brooks-test / brooks-health / brooks-sweep); generic questions about brooks-lint that don't ask to change it; or maintenance of a different plugin.

2k tokens
Brooks Health
by hyhmrright

> Combined codebase health dashboard that scores a project across all four quality dimensions — PR quality, architecture, tech debt, and test quality — in a single pass, drawing on twelve classic engineering books. codebase?", "run all the checks", "I need a health score before the release", or wants to onboard a new team with a quality overview. liveness/readiness probes, database health, or application uptime. Also do not trigger when the user specifically requests only one dimension — use the corresponding focused skill instead (brooks-review / brooks-audit / brooks-debt / brooks-test).

1k tokens
Brooks Debt
by hyhmrright

> Tech debt assessment that identifies, classifies, and prioritizes maintainability problems — helping teams build a refactoring roadmap — drawing on twelve classic engineering books. first, or asks "why is this so hard to change?", "what should we fix first?", or "how do I justify refactoring to management?". database health, or application uptime — "health" in those contexts is infrastructure, not code quality. Also not for single-function refactoring questions.

2k tokens
Brooks Review
by hyhmrright

> PR code review that surfaces decay risks, design smells, and maintainability issues with concrete Symptom → Source → Consequence → Remedy findings, drawing on twelve classic engineering books. code asking "does this look right?" / "any issues here?" / "ready to merge?", or asks for feedback on a function, class, or file. DDD / SOLID principles / Hyrum's Law / deep modules / tactical programming / conceptual integrity / Brooks's Law / Mythical Man-Month / second system effect. questions, or framework/tool questions where no existing code is shared.

2k tokens
Brooks Test
by hyhmrright

> Test quality review drawing on twelve classic engineering books — with primary focus on xUnit Test Patterns, The Art of Unit Testing, How Google Tests Software, and Working Effectively with Legacy Code — that diagnoses structural problems in an poor readability. take forever", "tests pass but bugs still reach production", or "we have too many mocks". workflow) or testing framework/syntax questions — this skill reviews an existing suite for structural quality problems, not individual test authoring.

2k tokens
Draft Pr
by microsoft
vendor

Creates a pull request for the current branch, generating a clear title and a description that summarizes the changes and includes instructions on how to test them. Use when asked to open, draft, or create a PR.

991 tokens
Hotfix
by microsoft
vendor

Proposes a scoped version bump for a roosterjs hotfix. Given one or more commits provided by the user, determines which packages had files changed by those commits, bumps the version only for the affected version groups, and creates a draft PR. Use when asked to do a hotfix, a scoped/targeted version bump, or to release only specific commits.

3k tokens
Version Bump
by microsoft
vendor

Performs a version bump for roosterjs. Merges changes from master into release, determines the correct SemVer version bump based on public interface changes, and creates a draft PR. Use when asked to do a version bump, release prep, or bump versions.

2k tokens
Lore
by specstoryai

SpecStory Lore - mine your SpecStory coding histories (any agent - Claude Code, Codex, Cursor, Gemini, and more) into a persistent corpus, surface your reproducible workflows with corroborated evidence, and interactively forge the chosen ones into skills installed across all your agent harnesses. Use when the user wants to turn past AI coding sessions into reusable skills, asks "what could I make into a skill", "mine my lore", "forge skills from my history", or points at a .specstory/history directory.

78k tokens scripts
Workthreads
by specstoryai

SpecStory Workthreads - a weekly work-thread rollup across a team's repos from SpecStory coding histories (any agent - Claude Code, Codex, Cursor, Gemini, and more). It groups the window's sessions into threads of work per project and labels each new / open / recently closed, so a lead sees what shipped, what is still an open loop, and what was just started. Use when someone asks "what happened this week", "what is still open", "what did the team finish", "give me the weekly rollup", or wants a status report over a .specstory/history corpus.

21k tokens scripts
Claude Reflect
by BayramAnnakov

Self-learning system that captures corrections during sessions and reminds users to run /reflect to update CLAUDE.md. Use when discussing learnings, corrections, or when the user mentions remembering something for future sessions.

108k tokens scripts
Swift Docc
by supabase
vendor

> Use when adding triple-slash comments to Swift types, methods, or properties; creating a .docc catalog folder; writing articles or extension files for a Swift package; fixing DocC build warnings about broken symbol links or missing documentation; or setting up module-level documentation for the first time.

2k tokens
Crosvm Cl Tool
by google
vendor

Skill to assist with using the `./tools/cl` tool for managing and uploading Gerrit CLs in the crosvm repository.

646 tokens
Crosvm Dev Container
by google
vendor

Skill to assist with using the `dev_container` tool for running builds, tests, and other tools in a consistent containerized environment.

344 tokens
Crosvm Testing
by google
vendor

Skill to assist with running tests and managing test VMs in the crosvm repository.

847 tokens
Crosvm Contribution Workflow
by google
vendor

Skill to assist with the contribution workflow for crosvm. ALL agents making code changes MUST use this skill to run presubmit checks before committing.

2k tokens
Autoreview
by openclaw

Pre-commit/ship code review: Codex default; optional Claude or Pi.

193k tokens scripts
Crabbox
by openclaw

Detect and use Crabbox for repository tests and validation on remote runners. Use when crabbox.yaml or .crabbox.yaml exists, the crabbox CLI is available, or work needs remote compute, a clean or reusable environment, target-platform coverage, or auditable execution evidence.

5k tokens
Sast Hardcodedsecrets
by utkusen

>- Detect hardcoded sensitive data (API keys, access tokens, private keys, passwords, etc.) in publicly accessible code — frontend JavaScript, mobile recon (find secret candidates), batched verify (confirm real secrets in public code paths, 3 candidates each), and merge (consolidate batch results). Requires sast/architecture.md (run sast-analysis first). Outputs findings to sast/hardcodedsecrets-results.md. Use when asked to find hardcoded secrets, leaked API keys, or exposed credentials.

7k tokens
Sast JWT
by utkusen

>- Detect insecure JWT (JSON Web Token) implementations in a codebase using a understand the token lifecycle and signing configuration, then check each verification site for exploitable weaknesses such as algorithm confusion, missing signature verification, weak secrets, header injection, and missing claim validation. Requires sast/architecture.md (run sast-analysis first). Outputs findings to sast/jwt-results.md. If no JWT usage is found in Phase 1, Phase 2 is skipped. Use when asked to find JWT, token forgery, or authentication bypass bugs.

6k tokens
Sast Idor
by utkusen

>- Detect Insecure Direct Object Reference (IDOR) vulnerabilities in a codebase authorization in parallel subagents, 3 candidates each), and merge (consolidate batch results). Checks endpoints for missing ownership or authorization checks on user-supplied identifiers. Requires sast/architecture.md (run sast-analysis first). Outputs findings to sast/idor-results.md. Use when asked to find IDOR or authorization bypass bugs.

5k tokens
Sast Graphql
by utkusen

>- Detect GraphQL injection vulnerabilities in a codebase using a three-phase assembly sites), batched verify (trace user input to those sites in parallel subagents, up to 3 candidate sites each), and merge (consolidate batch results). Requires sast/architecture.md (run sast-analysis first). Outputs findings to sast/graphql-results.md. If no GraphQL technology is found in Phase 1, later phases are skipped. Use when asked to find GraphQL injection, unsafe GraphQL document construction, or operation string injection bugs.

5k tokens
Sast Analysis
by utkusen

>- Perform codebase analysis and architecture mapping as the first phase of a security assessment. Explores the tech stack, frameworks, entry points, data flows, and trust boundaries. Outputs sast/architecture.md. Run this before any vulnerability detection skill. Use when asked to analyze a codebase for security or when sast/architecture.md does not yet exist.

1k tokens
Sast Businesslogic
by utkusen

>- Detect business logic vulnerabilities in a codebase using a three-phase verify (check exploitable gaps in parallel subagents, 3 scenarios each), and merge (consolidate batch results). Covers price manipulation, workflow bypass, limit violations, race conditions, reward abuse, etc. Requires sast/architecture.md (run sast-analysis first). Outputs findings to sast/businesslogic-results.md. Use when asked to find business logic, logic flaws, or abuse-of-function bugs.

5k tokens
Sast Missingauth
by utkusen

>- Detect missing authentication and broken function-level authorization endpoints and the role/permission system), batched verify (check auth/authz in parallel subagents, 3 endpoints each), and merge (consolidate batch results). Covers unauthenticated access and vertical privilege escalation (e.g., regular user accessing admin-only functions). Requires sast/architecture.md (run sast-analysis first). Outputs findings to sast/missingauth-results.md. Use when asked to find missing auth, broken access control, or privilege escalation bugs.

6k tokens
Sast Fileupload
by utkusen

>- Detect insecure file upload vulnerabilities in a codebase using a three-phase bypass and related issues in parallel subagents, 3 sites each), and merge (consolidate batch results). Requires sast/architecture.md (run sast-analysis first). Outputs findings to sast/fileupload-results.md. Use when asked to find file upload, unrestricted upload, or extension bypass bugs.

7k tokens
Sast Pathtraversal
by utkusen

>- Detect path traversal vulnerabilities in a codebase using a three-phase (trace user input and mitigations in parallel subagents, 3 sinks each), and merge (consolidate batch results). Requires sast/architecture.md (run sast-analysis first). Outputs findings to sast/pathtraversal-results.md. Use when asked to find path traversal, directory traversal, or file disclosure bugs.

7k tokens
Sast Report
by utkusen

>- Consolidate all SAST vulnerability results from the sast/ folder into a single final report ranked by severity and confidentiality impact. Reads all *-results.md files and produces sast/final-report.md. Run after all vulnerability detection skills complete. Use when asked to generate a final report, consolidate findings, or summarize security results.

2k tokens
Sast Rce
by utkusen

>- Detect Remote Code Execution (RCE) vulnerabilities in a codebase using a (trace user input to sinks in parallel subagents, 3 sinks each), and merge (consolidate batch results). Covers OS command injection, eval-like sinks, and unsafe deserialization. Requires sast/architecture.md (run sast-analysis first). Outputs findings to sast/rce-results.md. Use when asked to find RCE, command injection, or unsafe deserialization bugs.

8k tokens
Sast Ssrf
by utkusen

>- Detect Server-Side Request Forgery (SSRF) vulnerabilities in a codebase using user input to destinations in parallel subagents, 3 sites each), and merge (consolidate batch results). Requires sast/architecture.md (run sast-analysis first). Outputs findings to sast/ssrf-results.md. Use when asked to find SSRF or server-side request forgery bugs.

7k tokens
Sast Ssti
by utkusen

>- Detect Server-Side Template Injection (SSTI) vulnerabilities in a codebase dynamic strings), batched verify (trace user input to those sites in parallel subagents, 3 candidates each), and merge (consolidate batch results). Requires sast/architecture.md (run sast-analysis first). Outputs findings to sast/ssti-results.md. Use when asked to find SSTI or template injection bugs.

8k tokens
Sast Sqli
by utkusen

>- recon (find unsafe SQL construction sites), batched verify (trace user input to those sites in parallel subagents, 3 sites each), and merge (consolidate batch results). Covers string concat, f-strings, unsafe ORM methods, and dynamic identifiers. Requires sast/architecture.md (run sast-analysis first). Outputs findings to sast/sqli-results.md. Use when asked to find SQLi or database injection bugs.

6k tokens
Sast Xss
by utkusen

>- Detect Cross-Site Scripting (XSS) vulnerabilities in a codebase using a (trace user input to sinks in parallel subagents, 3 sink sites each), and merge (consolidate batch results). Requires sast/architecture.md (run sast-analysis first). Outputs findings to sast/xss-results.md. Use when asked to find XSS or cross-site scripting bugs.

7k tokens
Sast Xxe
by utkusen

>- Detect XML External Entity (XXE) vulnerabilities in a codebase using a hardening), batched verify (trace user input to each site in parallel subagents, 3 sites each), and merge (consolidate batch results). Requires sast/architecture.md (run sast-analysis first). Outputs findings to sast/xxe-results.md. Use when asked to find XXE or XML injection bugs.

7k tokens
Skill Creator
by AIPexStudio

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 AIPex's capabilities with specialized knowledge, workflows, or tool integrations.

13k tokens scripts
Ux Audit Walkthrough
by AIPexStudio

Minimalist UX/Interaction Audit Expert that deconstructs complex interactions through cognitive load and operational efficiency lenses. Use this skill when you need to perform a UX walkthrough audit on a Figma prototype or web interface, evaluating usability based on principles like fewer clicks, less UI elements, no hidden logic, and self-explanatory design.

2k tokens
Wcag22 A11y Audit
by AIPexStudio

WCAG 2.2 Accessibility Audit skill that systematically evaluates web pages against 8 core Success Criteria (1.1.1, 1.4.3, 1.4.11, 2.1.1, 2.1.2, 2.4.3, 2.4.7, 4.1.2) using accessibility tree inspection and visual analysis. Use this skill when you need to perform accessibility testing/auditing on a live webpage.

5k tokens
Aipex Browser
by AIPexStudio

AI-powered browser automation using the AIPex Chrome Extension via MCP bridge. Use this skill when the agent needs to control a Chrome browser — navigating pages, clicking elements, filling forms, capturing screenshots, managing tabs, or downloading content — by connecting to the AIPex MCP bridge.

5k tokens
AI Search Hub
by minsight-ai-info

Run the AI Search Hub browser automation scripts for Yuanbao, LongCat, Doubao, Qwen, Gemini, Grok, and MiniMax. Use this skill when the user wants to ask one of those sites a prompt, auto-start or attach to a Chrome DevTools session on port 9222, seed an isolated debug browser profile from the user's local browser data, detect whether login is required, wait for the user to finish logging in if needed, and then continue automatically.

526k tokens scripts
Design Dna
by zanwei

>- (tokens), design style (qualitative feel), and visual effects (Canvas, WebGL, wants to see the full 3-dimension design structure/schema, (2) a user provides images, screenshots, or URLs of reference designs and wants them analyzed into a structured JSON profile covering all three dimensions, (3) a user has a Design DNA JSON and content and wants a design generated from it, or (4) any combination of these phases. Triggers on "design DNA", "extract design style", "analyze design", "design tokens from reference", "generate design from JSON", "design system from screenshot", "design profile", "style guide JSON", "visual effects analysis", "design with effects", "3d design analysis".

29k tokens
Ab Test Setup And Analysis
by irinabuht12-oss

Designs statistically valid split tests for ads, audiences, landing pages, or bid strategies. Calculates required sample sizes before you start, monitors results during the test, and calls winners when statistical significance is actually reached — not when you feel like one is winning. Platform: Google and Meta.

744 tokens
Account Structure Review
by irinabuht12-oss

Evaluates your campaign and ad set structure against your actual goals and budget. Flags over-segmentation that fragments your data, under-segmentation that hides performance differences, budget allocation issues, and consolidation opportunities that would improve algorithmic delivery and your ability to optimize. Platform: Google and Meta.

768 tokens
Ad Extension Audit
by irinabuht12-oss

Reviews all your Google Ads extensions — sitelinks, callouts, structured snippets, call extensions, image extensions, price extensions — across every campaign. Flags what's missing, what's underperforming, what's outdated, and writes replacements based on your best performing ads and landing pages. Platform: Google.

712 tokens
Anomaly Detection
by irinabuht12-oss

Catches unusual performance changes across your accounts — CPC spikes, CVR drops, spend surges, impression collapses, CTR shifts — and flags them with context about what likely changed. The goal is to catch problems in hours instead of discovering them days later during a routine check. Platform: Google and Meta.

663 tokens
AI Visibility Audit
by irinabuht12-oss

Audit how visible your brand is inside AI answers (ChatGPT, Claude, Gemini, Perplexity, AI Overviews). Claude builds a prompt panel for your category, scores where you show up vs competitors, and turns the gaps into a prioritized fix list. Platform: AI visibility.

615 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: 11 333 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 79 437 files found on GitHub, 61 785 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: 7 884 skills here share a name with another skill, and two of them cannot sit side by side.