45,053 repositories keep their own agent configuration in the open: a CLAUDE.md, a rules file, instructions for Copilot, a skill the project runs on itself. These are not mods to install. They are worth reading for what they reveal — what a maintainer thinks an agent gets wrong.
Building agents8,576Claude Code6,909Git and workflow3,638Data and AI3,577Backend and APIs3,561Languages3,499Planning3,322Code review2,907Testing2,704DevOps and cloud2,498Writing and docs2,488Memory and context2,373Research2,320Frontend2,317Security2,182Project management1,989
All Claude Code32,564 Codex24,947 OpenCode23,868 GitHub Copilot3,726 Gemini CLI2,040 Cursor1,770 Windsurf203 Kiro117
| Project | Stars | Configures | Files | Always loaded |
|---|---|---|---|---|
| Claritune/mutantx AI powered mutation testing skill. Language and harness agnostic. | 2 | Claude Code | 1 | 628 tok |
| storious/agent-playbook Optional package and lifecycle manager for Agul runtimes, Skills, Plugins, and .agents pac | 2 | Codex, OpenCode | 1 | 372 tok |
| Tradebaas/Groundwork tradebaas.github.io The operating system for AI-built software: one rulebook, a skill library, project memory | 2 | Claude Code, Codex, OpenCode | 5 | 856 tok |
| arslanr-com/amcli amcli.arslanr.com A CLI over ArchiMate models — search, traverse, edit, validate and draw .archimate files. | 2 | Claude Code, Codex, OpenCode | 2 | 5,868 tok |
| edloidas/skills Agent skills for planning, building, reviewing, auditing, maintaining, and shipping softwa | 2 | Codex, OpenCode | 1 | 1,708 tok |
| dzhokhov/markdown-agent-vault-ru Open-source starter kit for an agent-ready Markdown vault with AGENTS.md, templates, skill | 2 | Codex, OpenCode | 1 | 2,342 tok |
| ConmuYan/my-academic-skills Personal academic agent skills: closed-loop abstracts and paper prototype code. Install on | 2 | Codex, OpenCode | 1 | 533 tok |
| bogdanbaciu21/skills bogdanbaciu.com Useful Skills from Bogdan Baciu | 2 | Codex, OpenCode | 1 | 77 tok |
| zmij/agent-kb Drop-in Qdrant-backed knowledge base for LLM coding agents, exposed over MCP | 2 | Claude Code, Codex, OpenCode | 2 | 1,260 tok |
| jorgealves/agent_skills My Agent Skills Configurations | 2 | Codex, OpenCode | 1 | 2,009 tok |
| sven1103-agent/sklint A small Go CLI to validate agent skills against agentskills.io specification | 2 | Codex, OpenCode | 1 | 3,460 tok |
| sonofmagic/skills icebreaker's skills | 2 | Claude Code, Codex, OpenCode | 2 | 2,221 tok |
| unshDee/proofrag pypi.org Point your agent at your docs and your RAG app; get a golden test set + an LLM-as-judge & | 2 | Claude Code, Codex, OpenCode | 1 | 348 tok |
| devjourney/music-assistant-mcp A Model Context Protocol (MCP) server for Home Assistant's Music Assistant service. | 2 | Claude Code | 1 | 242 tok |
| BenedictKing/tavily-web Powerful web search, extraction, crawling, and research capabilities for Claude Code using | 2 | Claude Code | 1 | — |
| dawiddutoit/custom-claude Collection of Claude Code skills, agents, and plugins | 2 | Claude Code | 1 | 3,900 tok |
| byheaven/byheaven-skills A collection of agent skills for code and productive work. | 2 | Claude Code, Codex, OpenCode | 3 | 1,858 tok |
| dnvriend/pdf-to-pptx-tool Professional CLI tool that converts PDF documents into PowerPoint presentations | 2 | Claude Code | 1 | 2,302 tok |
| Lutra-Fs/sift An MCP and skills manager that reduces cognitive load across multiple AI agents. | 2 | Claude Code, Codex, OpenCode | 2 | 1,131 tok |
| speech115/notes-skill Local-first /notes skill for agent-made study notes from YouTube, transcripts, audio, and | 2 | Codex, OpenCode | 1 | 681 tok |
| wokaka209/markdown_everything AI agent skill | 2 | Claude Code | 1 | 943 tok |
| SmallNoc/noc-living-docs Living docs protocol and Codex skill for keeping AI-assisted code changes, requirements, s | 2 | Codex, OpenCode | 1 | 367 tok |
| matracey/daisyui-mcp-server MCP server for daisyUI React components — search docs, props, and code examples from any A | 2 | Codex, GitHub Copilot, OpenCode | 2 | 1,577 tok |
| Ryan1857/openclaw-deploy-ninja Provide a secure, guided one-click installer for OpenClaw with automated dependency setup | 2 | Claude Code | 1 | 949 tok |
| Jared13PG/ai-engineering-workflow Description: A structured engineering workflow skill for complex AI-assisted coding, cours | 2 | Codex, OpenCode | 1 | 1,404 tok |
| SadmanYasar/arch-review-agent An ADK 2.0 multi-agent guardrail that screens pull requests for security flaws and AST vio | 2 | Gemini CLI | 1 | 748 tok |
| srinitude/skills skills.sh All of my portable Agent Skills with local validation and MCP access | 2 | Codex, OpenCode | 1 | 1,510 tok |
| williamjxj/friendshipdaycare friendshipdaycare.com A stunning, well-design UI, multi-themes, multi-languages supports product using nextjs, t | 2 | Codex, GitHub Copilot, OpenCode | 2 | 1,341 tok |
| mhagrelius/dotfiles Personal configuration files | 2 | Claude Code | 19 | — |
| armatrix/twitter-mcp Lightweight Twitter MCP server for Claude Code. Read via twitterapi.io, write via Official | 2 | Claude Code | 1 | 770 tok |
| MajesteitBart/TalentMatcher bartvandermeeren.nl AI-powered system for automatically matching rejected candidates to alternative open posit | 2 | Claude Code, Codex, OpenCode | 61 | 4,942 tok |
| reachjalil/skills-kit Repo-local skill switchboard for agent skill libraries | 2 | Codex, OpenCode | 1 | 171 tok |
| bonnguyenitc/specship A staged spec → plan → coding → review workflow for shipping AI-assisted code. Works with | 2 | Claude Code, GitHub Copilot | 3 | 1,036 tok |
| is-bo/fullstack-forge-skill A production full-stack engineering skill suite for AI coding agents—covering UI, UX, secu | 2 | Claude Code, Codex, Gemini CLI, OpenCode | 3 | 446 tok |
| scalekit-inc/skills Skills that teach AI coding agents to integrate Scalekit auth — agent auth, full-stack log | 2 | Codex, OpenCode | 1 | 584 tok |
| YosefHayim/planpage npmjs.com CLI and Preact kit that renders AI agent plans and reports as local HTML, with in-browser | 2 | Codex, OpenCode | 1 | 2,534 tok |
| AllanWessels/Bratan Bratan is a self-improving Retrieval-Augmented Generation framework built on an adversaria | 2 | Claude Code | 1 | 3,230 tok |
| Zhangs-11/zs-skills Kakarot's Chinese Agent Skills collection: automated three-pass steelman analysis for impo | 2 | Claude Code, Codex, OpenCode | 2 | 4,125 tok |
| Sliky1/lagrangian-skills Agent Skill for constrained optimization via ALM/ADMM/KKT — with adversarial guards, COOP | 2 | Claude Code | 1 | 236 tok |
| Hubujiu/practical-coding A lean, event-driven coding skill for AI agents. Less over-engineering, zero ceremony, sur | 2 | Codex, OpenCode | 1 | 701 tok |
| seatlayer/seatlayer-ai-toolkit docs.seatlayer.io SeatLayer's AI toolkit for coding agents: portable agent skills, deterministic integration | 2 | Codex, OpenCode | 1 | 142 tok |
| swaaap-nil/system-design-skill Turn any codebase into a Staff-level system design interview problem. One command, works i | 2 | Codex, OpenCode | 1 | 380 tok |
| 2612evgenii-hue/business-idea-evaluator Objective evaluation of business ideas through 18 subagents and a Business Reality Score. | 2 | Codex, OpenCode | 1 | 938 tok |
| ai-creed/ai-shakespii npmjs.com Workbench for Agent Skills — lint, test, benchmark, and gate-install SKILL.md skills for C | 2 | Codex, OpenCode | 1 | 2,002 tok |
| xirothedev/skills NestJS API best-practice skill and adapter pack for coding agents. | 2 | Claude Code, Codex, OpenCode | 2 | 5,701 tok |
| 2018wzh/windows-sandbox-computer-use Windows Sandbox-only visual control and scoped file sharing skill for Codex and npx skills | 2 | Codex, OpenCode | 1 | 475 tok |
| BreetyGreen/Myco Myco — the mycelial layer for your AI agents. A macOS menu-bar app that shares one skill a | 2 | Codex, OpenCode | 1 | 1,924 tok |
| ReyYang/SkillYard A local-first macOS app for organizing, installing, taking over, mounting, and updating AI | 2 | Codex, OpenCode | 1 | 925 tok |
| xFurti/leogriel xfurti.github.io Weave Agent Skills into every workflow — discover, lock, sync, audit, and test across codi | 2 | Codex, OpenCode | 1 | 607 tok |
| SeasonXue/avatar-forge-skill An Agent Skill for creating reusable, style-consistent human and character avatars | 2 | Codex, OpenCode | 1 | 2,891 tok |