32,436 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 agents8,442Claude Code6,875Data and AI3,584Git and workflow3,574Backend and APIs3,550Languages3,468Planning3,315Code review2,876Testing2,653DevOps and cloud2,462Writing and docs2,461Memory and context2,373Research2,315Frontend2,301Security2,167Project management1,944
All Claude Code32,436 Codex24,692 OpenCode23,614 GitHub Copilot3,700 Gemini CLI2,016 Cursor1,769 Windsurf202 Kiro113
| Project | Stars | Configures | Files | Always loaded |
|---|---|---|---|---|
| browseros-ai/BrowserOS browseros.com 🌐 The open-source Agentic browser; alternative to ChatGPT Atlas, Perplexity Comet, Dia. | 14,261 | Claude Code | 4 | — |
| nanobrowser/nanobrowser nanobrowser.ai Open-source AI agent for web automation. Use your real, logged-in browser to automate dail | 14,247 | Claude Code, Codex, OpenCode | 2 | 3,260 tok |
| rommapp/romm romm.app A beautiful, powerful, self-hosted ROM manager and player. | 14,234 | Claude Code, Codex, OpenCode | 17 | 2,188 tok |
| 567-labs/instructor python.useinstructor.com structured outputs for llms | 14,098 | Claude Code | 1 | 3,148 tok |
| qazbnm456/awesome-web-security awesomelists.top 🐶 A curated list of Web Security materials and resources. | 14,008 | Claude Code | 1 | 3,273 tok |
| Untrivial-ai/agent-orchestrator Plan, run and supervise fleets of agents from task to merged PR. Desktop (macOS, Windows, | 13,972 | Claude Code, Codex, OpenCode | 5 | 3,492 tok |
| rabbitmq/rabbitmq-server rabbitmq.com Open source RabbitMQ: core server and tier 1 (built-in) plugins | 13,955 | Claude Code, Codex, Gemini CLI, OpenCode | 3 | 4,982 tok |
| coleam00/context-engineering-intro Context engineering is the new vibe coding - it's the way to actually make AI coding assis | 13,901 | Claude Code | 3 | 693 tok |
| EverMind-AI/EverOS evermind.ai One portable memory layer for every AI agent: local-first, Markdown-native, user-owned, an | 13,824 | Claude Code | 8 | 1,132 tok |
| MiniMax-AI/skills | 13,793 | Claude Code | 1 | — |
| StarTrail-org/LEANN arxiv.org [MLsys2026 Best Paper]: https://arxiv.org/abs/2506.08276. RAG on Everything with LEANN. En | 13,775 | Claude Code | 1 | 2,437 tok |
| XiaomiMiMo/MiMo-Code mimo.xiaomi.com MiMo Code: Where Models and Agents Co-Evolve | 13,760 | Claude Code, Codex, OpenCode | 3 | 903 tok |
| modelcontextprotocol/typescript-sdk ts.sdk.modelcontextprotocol.io The official TypeScript SDK for Model Context Protocol servers and clients | 13,715 | Claude Code | 1 | 295 tok |
| OpenByteInc/QuantDinger ai.quantdinger.com Open-source AI Trading OS, agent trading, and vibe trading, with Jev System One integratio | 13,551 | Claude Code, Codex, OpenCode | 2 | 776 tok |
| sirmalloc/ccstatusline 🚀 Beautiful highly customizable statusline for Claude Code CLI with powerline support, th | 13,537 | Claude Code, Codex, OpenCode | 2 | 2,076 tok |
| ccfos/nightingale n9e.io Open-source, self-hosted alerting for metrics, logs, and databases. Includes a built-in AI | 13,453 | Claude Code | 1 | 2,244 tok |
| plantuml/plantuml plantuml.com Generate diagrams from textual description | 13,402 | Claude Code, GitHub Copilot | 2 | 1,273 tok |
| milind-soni/OpenMausBot openmausbot.com Open-source Grok Bot alternative with a virtual machine that bots can use | 13,395 | Claude Code, Codex, OpenCode | 3 | 300 tok |
| mrexodia/ida-pro-mcp plugins.hex-rays.com AI-powered reverse engineering assistant that bridges IDA Pro with language models through | 13,379 | Claude Code | 1 | 1,135 tok |
| Portkey-AI/gateway portkey.ai A blazing fast AI Gateway with integrated guardrails. Route to 1,600+ LLMs, 50+ AI Guardra | 13,329 | Claude Code | 1 | 844 tok |
| InsForge/InsForge insforge.dev The all-in-one, open-source backend platform for agentic coding. InsForge gives your codin | 13,286 | Claude Code, Codex, GitHub Copilot | 9 | 1,185 tok |
| MetaMask/metamask-extension metamask.io :globe_with_meridians: :electric_plug: The MetaMask browser extension enables browsing Eth | 13,250 | Claude Code, Codex, Cursor, OpenCode | 3 | 14,615 tok |
| nasa/openmct nasa.github.io A web based mission control framework. | 13,204 | Claude Code, Codex, Gemini CLI, OpenCode | 3 | 1,727 tok |
| TencentCloud/CubeSandbox cubesandbox.com Instant, Concurrent, Secure & Lightweight Sandbox for AI Agents. | 13,175 | Claude Code, Codex, OpenCode | 11 | 232 tok |
| NangoHQ/nango nango.dev Connect your agents & product to 1,000 APIs. | 13,130 | Claude Code, Codex, OpenCode | 13 | 681 tok |
| ixartz/Next-js-Boilerplate nextjs-boilerplate.com 🚀🎉📚 Nextjs Boilerplate and Starter with App Router and Page Router support, Tailwind CS | 13,091 | Claude Code, Codex, OpenCode | 2 | 886 tok |
| Piebald-AI/claude-code-system-prompts All parts of Claude Code's system prompt, 27 builtin tool descriptions, sub agent prompts | 13,091 | Claude Code | 1 | 362 tok |
| blackboardsh/electrobun electrobun.dev Build ultra fast, tiny, and cross-platform desktop apps with TypeScript, Zig, Rust, Go, or | 13,030 | Claude Code, Codex | 2 | 371 tok |
| run-llama/liteparse developers.llamaindex.ai A fast, helpful, and open-source document parser | 12,989 | Claude Code, Codex, OpenCode | 2 | 2,135 tok |
| datahub-project/datahub datahub.com The Context Platform for your Data and AI Stack | 12,956 | Claude Code, Codex, OpenCode | 4 | 7,376 tok |
| elie222/inbox-zero getinboxzero.com The world's best AI personal assistant for email. Open source app to help you reach inbox | 12,924 | Claude Code, Codex, Cursor, OpenCode | 27 | 2,083 tok |
| maxrave-dev/SimpMusic simpmusic.org A cross-platform music app using YouTube Music for backend | 12,831 | Claude Code | 24 | — |
| vercel-labs/portless portless.sh Replace port numbers with stable, named local URLs. For humans and agents. | 12,831 | Claude Code, Codex, OpenCode | 2 | 1,587 tok |
| humanlayer/humanlayer humanlayer.dev The best way to get AI coding agents to solve hard problems in complex codebases. | 12,815 | Claude Code, Codex, OpenCode | 32 | 3,747 tok |
| Wei-Shaw/claude-relay-service pincc.ai CRS — a self-hosted Claude Code mirror and all-in-one open-source proxy service that provi | 12,785 | Claude Code | 1 | 2,425 tok |
| Tracer-Cloud/opensre discord.com The open-source agent for CI/CD reliability. | 12,728 | Claude Code, Codex, OpenCode | 3 | 1,596 tok |
| laradock/laradock laradock.io Full PHP development environment for Docker. Run Laravel, Symfony, CodeIgniter, Phalcon, W | 12,682 | Claude Code, Codex, GitHub Copilot, Cursor, Gemini CLI, OpenCode, Windsurf | 6 | 584 tok |
| zilliztech/claude-context Code search MCP for Claude Code. Make entire codebase the context for any coding agent. | 12,673 | Claude Code, Codex, OpenCode | 2 | 1,547 tok |
| axolotl-ai-cloud/axolotl docs.axolotl.ai Go ahead and axolotl questions | 12,668 | Claude Code, Codex, OpenCode | 2 | 3,197 tok |
| elastic/beats elastic.co :tropical_fish: Beats - Lightweight shippers for Elasticsearch & Logstash | 12,651 | Claude Code, Codex, OpenCode | 2 | 1,700 tok |
| infracost/infracost infracost.io Cloud cost intelligence for engineers, AI coding agents, and CI/CD 💰📉 Shift FinOps Left! | 12,610 | Claude Code, Codex, OpenCode | 2 | 501 tok |
| mnfst/awesome-free-llm-apis List of Permanent Free LLM API (API Keys) | 12,339 | Claude Code | 3 | 366 tok |
| MemTensor/MemOS memos.openmem.net Self-evolving memory OS for LLM & AI Agents: ultra-persistent memory, hybrid-retrieval, an | 12,278 | Claude Code, Codex, OpenCode | 7 | 3,034 tok |
| Jeffallan/claude-skills 67 Specialized Skills for Full-Stack Developers. Transform Claude Code into your expert pa | 12,238 | Claude Code | 1 | 3,410 tok |
| jina-ai/reader jina.ai Convert any URL to an LLM-friendly input with a simple prefix https://r.jina.ai/ | 12,238 | Claude Code | 1 | 2,542 tok |
| Arize-ai/phoenix arize.com AI Observability & Evaluation | 12,165 | Claude Code, Codex, Cursor, OpenCode | 36 | 270 tok |
| meshery/meshery meshery.io Meshery, the cloud native manager | 12,134 | Claude Code, Codex, GitHub Copilot, OpenCode | 27 | 8,494 tok |
| reactjs/react.dev react.dev The React documentation website | 11,831 | Claude Code | 13 | 393 tok |
| cocoindex-io/cocoindex cocoindex.io Incremental engine for long horizon agents 🌟 Star if you like it! | 11,827 | Claude Code, Codex, OpenCode | 5 | 6,373 tok |
| BeehiveInnovations/pal-mcp-server The power of Claude Code / GeminiCLI / CodexCLI + [Gemini / OpenAI / OpenRouter / Azure / | 11,825 | Claude Code, Codex, OpenCode | 4 | 3,590 tok |