43,383 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 agents7,374Claude Code6,573Data and AI3,706Backend and APIs3,486Languages3,398Planning3,181Git and workflow3,100Code review2,701Memory and context2,354Testing2,311Research2,292DevOps and cloud2,282Writing and docs2,269Frontend2,250Security1,980Productivity1,695
All Claude Code32,004 Codex23,112 OpenCode21,881 GitHub Copilot3,501 Gemini CLI1,902 Cursor1,724 Windsurf62 Kiro40
| Project | Stars | Configures | Files | Always loaded |
|---|---|---|---|---|
| Piebald-AI/claude-code-system-prompts All parts of Claude Code's system prompt, 27 builtin tool descriptions, sub agent prompts | 12,596 | Claude Code | 1 | 362 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 | 12,591 | Claude Code | 1 | 2,425 tok |
| zilliztech/claude-context Code search MCP for Claude Code. Make entire codebase the context for any coding agent. | 12,499 | Claude Code, Codex, OpenCode | 2 | 1,547 tok |
| simonw/llm llm.datasette.io Access large language models from the command-line | 12,468 | Codex, OpenCode | 1 | 100 tok |
| axolotl-ai-cloud/axolotl docs.axolotl.ai Go ahead and axolotl questions | 12,445 | Claude Code, Codex, OpenCode | 2 | 1,680 tok |
| Orchestra-Research/AI-Research-SKILLs orchestra-research.com Comprehensive open-source library of AI research and engineering skills for any AI model. | 12,383 | Claude Code | 1 | 3,596 tok |
| run-llama/liteparse developers.llamaindex.ai A fast, helpful, and open-source document parser | 12,261 | Claude Code, Codex, OpenCode | 2 | 2,104 tok |
| emdash-cms/emdash emdashcms.com EmDash is a full-stack TypeScript CMS based on Astro; the spiritual successor to WordPress | 12,239 | Claude Code, Codex, OpenCode | 3 | 6,651 tok |
| semantica-agi/semantica getsemantica.ai Graph-Native Infrastructure for Context and Accountable AI Systems | 12,210 | Claude Code | 1 | — |
| vercel-labs/portless portless.sh Replace port numbers with stable, named local URLs. For humans and agents. | 12,173 | Codex, OpenCode | 1 | 1,445 tok |
| elie222/inbox-zero getinboxzero.com The world's best AI personal assistant for email. Open source app to help you reach inbox | 12,155 | Claude Code, Codex, Cursor, OpenCode | 26 | 1,754 tok |
| spencermountain/compromise compromise.cool modest natural-language processing | 12,152 | Codex, OpenCode | 1 | 1,249 tok |
| jina-ai/reader jina.ai Convert any URL to an LLM-friendly input with a simple prefix https://r.jina.ai/ | 11,955 | Claude Code | 1 | 2,542 tok |
| FlashML-org/FreeToken FreeToken brings datacenter-scale model serving to your desktop. Run massive models locall | 11,907 | Claude Code, Codex, OpenCode | 2 | 988 tok |
| mrexodia/ida-pro-mcp plugins.hex-rays.com AI-powered reverse engineering assistant that bridges IDA Pro with language models through | 11,872 | Claude Code | 1 | 1,135 tok |
| TencentCloud/CubeSandbox cubesandbox.com Instant, Concurrent, Secure & Lightweight Sandbox for AI Agents. | 11,808 | Claude Code, Codex, OpenCode | 11 | 232 tok |
| reactjs/react.dev react.dev The React documentation website | 11,798 | Claude Code | 13 | 393 tok |
| CodebuffAI/freebuff freebuff.com The free coding agent | 11,765 | Codex, OpenCode | 1 | 259 tok |
| NangoHQ/nango nango.dev Build product integrations with AI. | 11,746 | Claude Code, Codex, OpenCode | 12 | 609 tok |
| BeehiveInnovations/pal-mcp-server The power of Claude Code / GeminiCLI / CodexCLI + [Gemini / OpenAI / OpenRouter / Azure / | 11,734 | Claude Code, Codex, OpenCode | 4 | 3,590 tok |
| meshery/meshery meshery.io Meshery, the cloud native manager | 11,710 | Claude Code, Codex, GitHub Copilot, OpenCode | 25 | 8,073 tok |
| jxxghp/MoviePilot movie-pilot.org NAS media library automation management tool | 11,702 | Claude Code, Codex, GitHub Copilot, OpenCode | 3 | 4,266 tok |
| cocoindex-io/cocoindex cocoindex.io Incremental engine for long horizon agents 🌟 Star if you like it! | 11,496 | Claude Code, Codex, OpenCode | 5 | 4,383 tok |
| 0xJacky/nginx-ui nginxui.com Yet another WebUI for Nginx | 11,477 | Claude Code, Codex, OpenCode | 3 | 1,366 tok |
| humanlayer/humanlayer humanlayer.dev The best way to get AI coding agents to solve hard problems in complex codebases. | 11,471 | Claude Code | 35 | 751 tok |
| OpenByteInc/QuantDinger ai.quantdinger.com Open-source AI Trading OS and commercial-ready multi-tenant SaaS platform — research marke | 11,379 | Cursor | 1 | — |
| Arize-ai/phoenix arize.com AI Observability & Evaluation | 11,348 | Claude Code, Codex, OpenCode | 31 | 192 tok |
| Jeffallan/claude-skills 67 Specialized Skills for Full-Stack Developers. Transform Claude Code into your expert pa | 11,347 | Claude Code | 1 | 2,588 tok |
| toss/es-toolkit es-toolkit.dev A modern JavaScript utility library that's 2-3 times faster and up to 97% smaller, a major | 11,334 | Claude Code, Codex, OpenCode | 8 | 2,737 tok |
| tw93/Kami kami.tw93.fun 👩🚒 Good content deserves good paper. | 11,227 | Claude Code, Codex, OpenCode | 2 | 6,917 tok |
| MemTensor/MemOS memos.openmem.net Self-evolving memory OS for LLM & AI Agents: ultra-persistent memory, hybrid-retrieval, an | 11,209 | Claude Code, Codex, OpenCode | 7 | 3,034 tok |
| holaboss-ai/holaOS holaos.ai Open-source agentic workspace enterprises can make their own. Connect the systems you alre | 11,169 | Claude Code, Codex, OpenCode | 2 | 1,361 tok |
| BrasilAPI/BrasilAPI brasilapi.com.br Vamos transformar o Brasil em uma API? | 11,107 | Claude Code | 2 | — |
| cobusgreyling/loop-engineering cobusgreyling.github.io Practical patterns, starters & CLI tools for loop engineering with AI coding agents. Desig | 11,093 | Codex, OpenCode | 1 | 457 tok |
| aden-hive/hive Multi-Agent Harness for Production AI | 11,021 | Claude Code, Codex, OpenCode | 4 | 380 tok |
| Untrivial-ai/agent-orchestrator aoagents.dev Agent IDE that enables you to manage fleets of coding agents. It comes with an agentic orc | 11,008 | Claude Code, Codex, OpenCode | 4 | 2,953 tok |
| Tracer-Cloud/opensre discord.com Build your own AI SRE agents. The open source toolkit for the AI era. | 11,006 | Claude Code, Codex, OpenCode | 3 | 6,820 tok |
| ValueCell-ai/valuecell valuecell.ai ValueCell is a community-driven, multi-agent platform for financial applications. | 11,004 | Codex, OpenCode | 1 | 1,224 tok |
| maxrave-dev/SimpMusic simpmusic.org A cross-platform music app using YouTube Music for backend | 11,000 | Claude Code | 25 | 33,450 tok |
| EKKOLearnAI/hermes-studio hermes-studio.ai Web dashboard for Hermes Agent — multi-platform AI chat, session management, scheduled job | 10,904 | Codex, OpenCode | 1 | 586 tok |
| modelcontextprotocol/inspector modelcontextprotocol.io Visual testing tool for MCP servers | 10,834 | Claude Code, Codex, OpenCode | 13 | 16,145 tok |
| huggingface/ml-intern 🤗 ml-intern: an open-source ML engineer that reads papers, trains models, and ships ML mo | 10,767 | Codex, OpenCode | 1 | 1,007 tok |
| data-privacy-stack/presidio presidio.dataprivacystack.org An open-source framework for detecting, redacting, masking, and anonymizing sensitive data | 10,759 | Claude Code, Codex, GitHub Copilot, OpenCode | 5 | 6,710 tok |
| numman-ali/openskills Universal skills loader for AI coding agents - npm i -g openskills | 10,742 | Claude Code, Codex, OpenCode | 2 | 301 tok |
| langchain-ai/open-swe langchain.com An Open-Source Asynchronous Coding Agent | 10,676 | Claude Code, Codex, OpenCode | 3 | 768 tok |
| skypilot-org/skypilot skypilot.ai The AI Compute Platform for frontier teams. SkyPilot turns fragmented AI compute into one | 10,571 | Claude Code, Codex, OpenCode | 2 | 3,959 tok |
| VoltAgent/voltagent voltagent.dev AI Agent Engineering Platform built on an Open Source TypeScript AI Agent Framework | 10,562 | Claude Code, Codex, OpenCode | 2 | 340 tok |
| cosscom/coss coss.com coss.com/ui is the official design system of Cal.com | 10,537 | Codex, OpenCode | 1 | 48 tok |
| yugabyte/yugabyte-db yugabyte.com YugabyteDB - the cloud native distributed SQL database for mission-critical applications. | 10,517 | Claude Code, Codex, OpenCode | 13 | 1,339 tok |
| woocommerce/woocommerce woocommerce.com A customizable, open-source ecommerce platform built on WordPress. Build any commerce solu | 10,492 | Claude Code, Codex, OpenCode | 16 | 5,088 tok |