43,713 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 agents7,642Claude Code6,648Data and AI3,676Backend and APIs3,504Languages3,399Planning3,222Git and workflow3,208Code review2,743Testing2,379Memory and context2,369Writing and docs2,323DevOps and cloud2,312Research2,290Frontend2,262Security2,025Productivity1,719
All Claude Code31,997 Codex23,311 OpenCode22,257 GitHub Copilot3,557 Gemini CLI1,917 Cursor1,739 Windsurf141 Kiro81
| Project | Stars | Configures | Files | Always loaded |
|---|---|---|---|---|
| shengyy/agent-skills Reusable AI agent skills for Claude Code / Codex — install with npx skills | 2 | Claude Code, Codex, OpenCode | 2 | 676 tok |
| Benja-Pauls/SerpentStack npmjs.com Find any AI agent skill or MCP server. Search every registry, install in seconds. | 2 | GitHub Copilot, Cursor | 2 | 1,822 tok |
| marcusrbrown/dev-like mrbro.dev Profile a shop's engineering culture from public sources and install develop-like-<target> | 2 | Codex, OpenCode | 1 | 222 tok |
| ming-14/PTY-Agent Give your AI agent a real terminal: persistent PTY sessions, prompt-triggered returns, sc | 2 | Codex, OpenCode | 1 | 2,257 tok |
| gericke98/skillwright Show your browser a task once. Get a self-healing Agent Skill any agent (Claude, OpenAI, … | 2 | Claude Code | 1 | 192 tok |
| EmZod/Agent-Focus-Group Test AI tool documentation against multiple models before shipping. Send skill docs to GPT | 2 | Codex, OpenCode | 1 | 2,284 tok |
| TerminatrX/agenticTrader An agent-driven equity trading system for Robinhood, built on the Robinhood MCP server. Cl | 2 | Claude Code | 3 | 3,908 tok |
| llodev/skills npmjs.com Collection of Agent Skills for Claude Code, Cursor, Codex, Windsurf, and any agent that sp | 2 | Claude Code | 1 | 782 tok |
| zakariaf/Flutter-Skills zakaria.dev General, reusable Flutter engineering skills for AI coding agents — architecture, Riverpod | 2 | Codex, OpenCode | 1 | 1,096 tok |
| cyzlmh/agentype Local AI-agent usage analytics and persona archetypes | 2 | Codex, OpenCode | 1 | 680 tok |
| 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 | 1,046 tok |
| WdBlink/autoresearch-paper Research-first Agent Skill that runs long-horizon paper pipelines with evaluator gates, he | 2 | Codex, OpenCode | 1 | 24 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 |
| trugurpala/pinescriptv6 Source-traceable Pine Script v6 guidance and structured examples for AI coding agents, wit | 2 | Claude Code, Codex, GitHub Copilot, Cursor, Gemini CLI, OpenCode | 7 | 16,421 tok |
| Zkeeper6899/rigorous-agents-md A reusable AGENTS.md profile for rigorous AI assistant reasoning, uncertainty awareness, a | 2 | Codex, OpenCode | 1 | 755 tok |
| lectral/dnd-workshop A collection of structured AI workflows (SKILL.md) for building D&D content monsters, NPCs | 2 | Codex, OpenCode | 1 | 2,021 tok |
| jpbaking/playwright-fieldkit Playwright FieldKit: gives coding agents hands and eyes on the web — crawl, debug, record, | 2 | Claude Code, Codex, OpenCode | 2 | 186 tok |
| nibzard/skills nibzard.com An opinionated collection of Agent Skills I use daily in my work. | 2 | Claude Code | 1 | 1,100 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 |
| Digidai/website2markdown-skills md.genedai.me AI Agent Skills for website2markdown — convert any URL to Markdown. Compatible with Claude | 2 | Claude Code | 1 | 505 tok |
| frankxai/affiliate-agent-skills frankx.ai Agent skill engine for AI-tool affiliate catalogs, monetization audits, partnership workfl | 2 | Codex, OpenCode | 1 | 897 tok |
| Fodhol/skills fodhol.github.io 🚀 Enhance your AI-assisted security workflows with plugins from the Trail of Bits Skills | 2 | Claude Code | 1 | 1,781 tok |
| blackwell-systems/polywave-codex Polywave implementation for OpenAI Codex CLI: parallel AI agents with disjoint file owners | 2 | Codex, OpenCode | 1 | 210 tok |
| YusenZhang0601/context-canopy Portable, local-first AI agent memory and personal context—switch agents without losing id | 2 | Claude Code, Codex, OpenCode | 2 | 632 tok |
| 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 |
| Kaos599/Synctax kaos599.github.io Universal sync for the agentic developer stack, configure MCP servers, agents, skills, and | 2 | Claude Code | 1 | 6,104 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 | 2,437 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 | 5,513 tok |
| SebastianElvis/hammer Agent skills for learning — Socratic tutoring with persistent learner state and spaced rev | 2 | Claude Code | 1 | 2,416 tok |
| edloidas/skills Agent skills for planning, building, reviewing, auditing, maintaining, and shipping softwa | 2 | Claude Code, Codex, OpenCode | 2 | 12,918 tok |
| agentpipe/pipebuilder Reuse Agent Skills across Cursor, Claude Code, Codex, and CodeBuddy. Build task-specific A | 2 | Claude Code | 1 | — |
| 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 |
| cmj-hub/claude-cold-email jaymountconsulting.com A JMC cold email is four jobs in under 90 words: a verbatim public signal, the pain that s | 2 | Codex, OpenCode | 1 | 980 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 | 1,842 tok |
| sven1103-agent/sklint A small Go CLI to validate agent skills against agentskills.io specification | 2 | Codex, OpenCode | 1 | 3,460 tok |
| drakulavich/iago drakulavich.github.io 🦜 Greptile-style Mermaid diagrams for AI code reviews — drawn by your own agent. A Claude | 2 | Claude Code, Codex, OpenCode | 2 | 1,855 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 | 1,013 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 |