23,799 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 agents8,544Claude Code6,892Git and workflow3,622Data and AI3,580Backend and APIs3,558Languages3,492Planning3,321Code review2,907Testing2,690DevOps and cloud2,489Writing and docs2,484Memory and context2,374Research2,321Frontend2,311Security2,178Project management1,971
All Claude Code32,539 Codex24,879 OpenCode23,799 GitHub Copilot3,723 Gemini CLI2,040 Cursor1,772 Windsurf202 Kiro116
| Project | Stars | Configures | Files | Always loaded |
|---|---|---|---|---|
| arkgum/arkgum-agent-skills Source-grounded NotebookLM research skill that turns a topic into a cited page brief and b | 2 | Codex, OpenCode | 1 | 284 tok |
| Coverage-Cat/skills coveragecat.com Public installable skills for Coverage Cat | 2 | Codex, OpenCode | 1 | 1,838 tok |
| WdBlink/autoresearch-paper Research-first Agent Skill that runs long-horizon paper pipelines with evaluator gates, he | 2 | Codex, OpenCode | 1 | 344 tok |
| GDvega/super-android-kotlin-firebase-skill A modular Agent Skills repository for Android, Kotlin, Jetpack Compose and Firebase develo | 2 | Codex, Gemini CLI, OpenCode | 2 | 202 tok |
| ChuYiCui1/AshareHub-skills asharehub.com Official AShareHub Agent Skill for querying Chinese A-share and ETF market data | 2 | Codex, OpenCode | 1 | 278 tok |
| Zkeeper6899/rigorous-agents-md A reusable AGENTS.md profile for rigorous AI assistant reasoning, uncertainty awareness, a | 2 | Codex, OpenCode | 1 | 755 tok |
| jpbaking/playwright-fieldkit Playwright FieldKit: gives coding agents hands and eyes on the web — crawl, debug, record, | 2 | Claude Code, Codex, OpenCode | 2 | 312 tok |
| jukrap/ai-agent-playbook npmjs.com Reusable AI agent skills, project templates, and guardrails for safer software maintenance | 2 | Codex, OpenCode | 1 | 331 tok |
| frankxai/affiliate-agent-skills frankx.ai Agent skill engine for AI-tool affiliate catalogs, monetization audits, partnership workfl | 2 | Codex, OpenCode | 1 | 862 tok |
| blackwell-systems/polywave-codex Polywave implementation for OpenAI Codex CLI: parallel AI agents with disjoint file owners | 2 | Codex, OpenCode | 1 | 210 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 |
| byheaven/byheaven-skills A collection of agent skills for code and productive work. | 2 | Claude Code, Codex, OpenCode | 3 | 1,858 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 |
| 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 |
| Jared13PG/ai-engineering-workflow Description: A structured engineering workflow skill for complex AI-assisted coding, cours | 2 | Codex, OpenCode | 1 | 1,404 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| yasik/kmd Agentic knowledge base and wiki management that works with any agent harness | 2 | Claude Code, Codex, OpenCode | 2 | 894 tok |
| keepYaoung/artifact-organizer Agent skill that turns semantic JSON into self-contained, themed HTML — then stacks your a | 2 | Codex, OpenCode | 1 | 1,761 tok |
| eliranpv11/code-discipline-skills Production-grade coding methodology for AI coding agents, Claude Code, Cursor, Codex. Six | 2 | Claude Code, Codex, OpenCode | 2 | 3,603 tok |