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 |
|---|---|---|---|---|
| OthmanAdi/planning-with-files skills.sh Persistent file-based planning for AI coding agents and long-running tasks. Crash-proof ma | 26,680 | Claude Code, Codex, OpenCode | 1 | 2,236 tok |
| vercel/ai ai-sdk.dev The AI Toolkit for TypeScript. From the creators of Next.js, the AI SDK is a free open-sou | 26,615 | Claude Code, Codex, OpenCode | 4 | 2,903 tok |
| deepset-ai/haystack haystack.deepset.ai Open-source AI orchestration framework for building context-engineered, production-ready L | 26,435 | Claude Code, Codex, OpenCode | 2 | 438 tok |
| h4ckf0r0day/obscura obscura.sh The headless browser for AI agents and web scraping | 26,268 | Codex, OpenCode | 1 | 2,630 tok |
| phuryn/pm-skills productcompass.pm PM Skills Marketplace: 100+ agentic skills, commands, and plugins — from discovery to stra | 26,066 | Claude Code, Codex, OpenCode | 2 | 1,910 tok |
| biomejs/biome biomejs.dev A toolchain for web projects, aimed to provide functionalities to maintain them. Biome off | 25,717 | Claude Code, Codex, OpenCode | 14 | 989 tok |
| JimLiu/baoyu-skills | 25,706 | Claude Code, Codex | 1 | 1,744 tok |
| alirezarezvani/claude-skills alirezarezvani.medium.com 380 Claude Code skills & agent skills & plugins (30+ Agents, 70+ custom commands, 380+ ski | 25,635 | Claude Code, Gemini CLI | 137 | — |
| agentskills/agentskills agentskills.io Specification and documentation for Agent Skills | 25,097 | Claude Code, Codex, OpenCode | 4 | 373 tok |
| EveryInc/compound-engineering-plugin every.to Official Compound Engineering plugin for Claude Code, Codex, Cursor, and more | 24,924 | Claude Code, Codex, Gemini CLI, OpenCode | 3 | 12,519 tok |
| VoltAgent/awesome-claude-code-subagents A collection of 100+ specialized Claude Code subagents covering a wide range of developmen | 24,899 | Claude Code | 1 | 595 tok |
| promptfoo/promptfoo promptfoo.dev Test your prompts, agents, and RAGs. Red teaming/pentesting/vulnerability scanning for AI. | 24,875 | Claude Code, Codex, OpenCode | 8 | 5,280 tok |
| Donchitos/Claude-Code-Game-Studios Turn Claude Code into a full game dev studio — 49 AI agents, 72 workflow skills, and a com | 24,852 | Claude Code | 11 | 381 tok |
| chromium/chromium chromium.googlesource.com The official GitHub mirror of the Chromium source | 24,730 | Claude Code, Codex, GitHub Copilot, Gemini CLI | 12 | 186 tok |
| letta-ai/letta docs.letta.com Platform for stateful agents: AI with advanced memory that can learn and self-improve over | 24,638 | Codex, OpenCode | 1 | 708 tok |
| RooCodeInc/Roo-Code roocode.com Roo Code gives you a whole dev team of AI agents in your code editor. | 24,309 | Codex, OpenCode | 1 | 95 tok |
| activepieces/activepieces activepieces.com AI Agents & MCPs & AI Workflow Automation • (~400 MCP servers for AI agents) • AI Automati | 24,304 | Claude Code, Codex, OpenCode | 22 | 9,534 tok |
| modelcontextprotocol/python-sdk py.sdk.modelcontextprotocol.io The official Python SDK for Model Context Protocol servers and clients | 24,218 | Claude Code, Codex, OpenCode | 4 | 2,212 tok |
| tursodatabase/turso A SQL database in Rust: SQLite-compatible, now also speaking Postgres (experimental). The | 24,185 | Claude Code, Codex, OpenCode | 15 | 2,197 tok |
| agentsmd/agents.md agents.md AGENTS.md — a simple, open format for guiding coding agents | 24,181 | Codex, OpenCode | 1 | 441 tok |
| browserbase/stagehand stagehand.dev The SDK For Browser Agents | 24,152 | Codex, OpenCode | 1 | 160 tok |
| nocobase/nocobase nocobase.com NocoBase is an open-source AI + no-code platform for building business systems fast. Inste | 24,077 | Claude Code, Codex, OpenCode | 2 | 1,116 tok |
| processing/p5.js p5js.org p5.js is a client-side JS platform that empowers artists, designers, students, and anyone | 23,954 | Codex, OpenCode | 1 | 4,651 tok |
| SuperClaude-Org/SuperClaude_Framework superclaude.netlify.app A configuration framework that enhances Claude Code with specialized commands, cognitive p | 23,871 | Claude Code, Codex, OpenCode | 4 | 3,795 tok |
| facebook/lexical lexical.dev Lexical is an extensible text editor framework that provides excellent reliability, access | 23,837 | Claude Code, Codex, OpenCode | 3 | 4,620 tok |
| kriasoft/react-starter-kit reactstarter.com Modern React starter kit with Bun, TypeScript, Tailwind CSS, tRPC, Stripe, and Cloudflare | 23,673 | Claude Code, Codex, GitHub Copilot, OpenCode | 3 | 1,405 tok |
| slopus/happy happy.engineering Mobile and Web client for Codex and Claude Code, with realtime voice, encryption and fully | 23,673 | Claude Code, Codex, OpenCode | 12 | 82 tok |
| JanDeDobbeleer/oh-my-posh ohmyposh.dev The most customisable and low-latency cross platform/shell prompt renderer | 23,423 | Codex, GitHub Copilot, OpenCode | 5 | 2,155 tok |
| coleam00/Archon archon.diy The first open-source harness builder for AI coding. Make AI coding deterministic and repe | 23,394 | Claude Code, Codex, OpenCode | 45 | 3,438 tok |
| different-ai/openwork openworklabs.com The open-source alternative to Claude Cowork (powered by opencode) | 23,375 | Claude Code, Codex, OpenCode | 20 | 1,151 tok |
| dotnet/maui dot.net .NET MAUI is the .NET Multi-platform App UI, a framework for building native device applic | 23,319 | Claude Code, Codex, GitHub Copilot | 50 | 34,574 tok |
| micro/go-micro go-micro.dev A Go agent harness and service framework | 23,057 | Claude Code, Codex, OpenCode | 2 | 2,557 tok |
| vectorize-io/hindsight hindsight.vectorize.io Hindsight: Agent Memory That Learns | 22,964 | Claude Code, Codex, OpenCode | 4 | 4,883 tok |
| 2025Emma/vibe-coding-cn | 22,946 | Codex, OpenCode | 1 | 3,650 tok |
| Skyvern-AI/skyvern skyvern.com Automate browser based workflows with AI | 22,941 | Claude Code, Codex, OpenCode | 3 | 1,555 tok |
| czlonkowski/n8n-mcp n8n-mcp.com A MCP for Claude Desktop / Claude Code / Windsurf / Cursor to build n8n workflows for you | 22,843 | Claude Code, Codex, OpenCode | 10 | 2,869 tok |
| forem/forem forem.com For empowering community 🌱 | 22,775 | Claude Code, Codex, GitHub Copilot, Cursor, OpenCode | 4 | 3,983 tok |
| 1Panel-dev/MaxKB maxkb.cn 🔥 MaxKB is an open-source platform for building enterprise-grade agents. A powerful and e | 22,729 | Claude Code | 1 | 2,021 tok |
| marimo-team/marimo marimo.io A reactive notebook for Python — run reproducible experiments, query with SQL, execute as | 22,678 | Claude Code, Codex, GitHub Copilot, OpenCode | 3 | 740 tok |
| fosrl/pangolin pangolin.net Modern networking and security platform providing secure access and connectivity to apps, | 22,654 | Claude Code | 1 | — |
| oxc-project/oxc oxc.rs ⚓ A collection of high-performance JavaScript tools. | 22,650 | Claude Code, Codex, GitHub Copilot, OpenCode | 3 | 3,367 tok |
| vxcontrol/pentagi pentagi.com Fully autonomous AI Agents system capable of performing complex penetration testing tasks | 22,452 | Claude Code | 1 | 2,308 tok |
| NVIDIA/NemoClaw docs.nvidia.com Run agents like Hermes, LangChain Deep Agents, and OpenClaw more securely inside NVIDIA Op | 22,393 | Claude Code, Codex, OpenCode | 31 | 4,217 tok |
| claude-code-best/claude-code ccb.agent-aura.top A genuine Claude Code-compatible, buildable, and debuggable version; production-grade engi | 22,389 | Claude Code, Codex, OpenCode | 5 | 14,205 tok |
| trycua/cua cua.ai Scale computer-use 2.0 with open-source drivers, cross-OS fleets, and benchmarks for train | 22,280 | Claude Code, Codex, OpenCode | 3 | 2,177 tok |
| magicuidesign/magicui magicui.design UI Library for Design Engineers. Animated components and effects you can copy and paste in | 22,181 | Codex, OpenCode | 1 | 3,445 tok |
| alibaba/open-code-review open-codereview.ai Fast, efficient, battle-tested at Alibaba's scale. Hybrid architecture code review tool: d | 22,013 | Claude Code, Codex, OpenCode | 2 | 790 tok |
| pascalorg/editor editor.pascal.app Create and share 3D architectural projects. | 21,987 | Claude Code, Codex, GitHub Copilot, Gemini CLI, OpenCode | 8 | 888 tok |
| appium/appium appium.io Cross-platform automation framework for all kinds of apps, built on top of the W3C WebDriv | 21,930 | Claude Code | 2 | — |
| pingdotgg/t3code t3.codes | 21,874 | Claude Code, Codex, OpenCode | 6 | 3,461 tok |