21,881 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 |
|---|---|---|---|---|
| iii-hq/iii iii.dev Effortlessly compose, extend, and observe every service in real-time for the first time ev | 18,677 | Codex, OpenCode | 1 | 1,777 tok |
| keploy/keploy keploy.io Open-source platform for creating safe, isolated production sandboxes for API, integration | 18,439 | Claude Code, Codex, OpenCode | 4 | 4,945 tok |
| nukeop/nuclear nuclearplayer.com Streaming music player that finds free music for you | 18,404 | Claude Code, Codex, GitHub Copilot, OpenCode | 6 | 4,563 tok |
| ccusage/ccusage ccusage.com npx ccusage | 18,399 | Claude Code, Codex, OpenCode | 21 | 844 tok |
| arc53/DocsGPT app.docsgpt.cloud Private AI platform for agents, assistants and enterprise search. Built-in Agent Builder, | 18,243 | Codex, OpenCode | 1 | 2,202 tok |
| RightNow-AI/openfang openfang.sh Open-source Agent Operating System | 18,167 | Claude Code, Codex, OpenCode | 2 | 1,448 tok |
| nesquena/hermes-webui get-hermes.ai Hermes WebUI: The best way to use Hermes Agent from the web or from your phone! | 18,129 | Codex, OpenCode | 1 | 1,537 tok |
| zhanymkanov/fastapi-best-practices FastAPI Best Practices and Conventions we used at our startup | 18,043 | Codex, OpenCode | 1 | 4,106 tok |
| gastownhall/gastown Gas Town - multi-agent workspace manager | 17,950 | Claude Code, Codex, Cursor, OpenCode | 8 | 1,529 tok |
| muratcankoylan/Agent-Skills-for-Context-Engineering A comprehensive collection of Agent Skills for context engineering, multi-agent architectu | 17,932 | Claude Code, Codex, OpenCode | 2 | 3,822 tok |
| windmill-labs/windmill windmill.dev Open-source developer platform to power your entire infra and turn scripts into webhooks, | 17,795 | Claude Code, Codex, OpenCode | 25 | 4,076 tok |
| langbot-app/LangBot langbot.app Production-grade platform for building agentic IM bots - Production-grade multi-platform i | 17,665 | Claude Code, Codex, OpenCode | 2 | 1,193 tok |
| itwanger/toBeBetterJavaer javabetter.cn An easy-to-understand, witty, and humorous Java learning guide covering core topics includ | 17,583 | Claude Code, Codex, OpenCode | 15 | 747 tok |
| every-app/open-seo openseo.so Open source alternative to Semrush and Ahrefs | 17,561 | Claude Code, Codex, OpenCode | 22 | 1,300 tok |
| Canner/WrenAI getwren.ai GenBI (Generative BI) for AI agents, an open-source, governed text-to-SQL through an open | 17,517 | Claude Code, Codex, OpenCode | 2 | 123 tok |
| browser-use/browser-harness browser-harness.com Browser Harness | Self-healing harness that enables LLMs to complete any task. | 17,405 | Claude Code, Codex, OpenCode | 2 | 545 tok |
| microsoft/mcp-for-beginners This open-source curriculum introduces the fundamentals of Model Context Protocol (MCP) th | 17,163 | Codex, OpenCode | 1 | 3,238 tok |
| ipfs/kubo docs.ipfs.tech IPFS implementation in Go: a daemon that stores and serves content-addressed data, with a | 17,125 | Codex, OpenCode | 1 | 7,449 tok |
| apache/apisix apisix.apache.org The Cloud-Native API Gateway and AI Gateway | 17,085 | Codex, OpenCode | 1 | 354 tok |
| larksuite/cli The official Lark/Feishu CLI tool, maintained by the larksuite team — built for humans and | 17,044 | Codex, OpenCode | 1 | 2,962 tok |
| bradautomates/claude-video Give Claude the ability to watch any video. /watch downloads, extracts frames, transcribes | 16,867 | Claude Code, Codex, OpenCode | 2 | 921 tok |
| umijs/qiankun qiankun.umijs.org 📦 🚀 Blazing fast, simple and complete solution for micro frontends. | 16,681 | Claude Code, Codex, OpenCode | 3 | 3,078 tok |
| udecode/plate platejs.org Rich-text editor with AI and shadcn/ui | 16,559 | Claude Code, Codex, OpenCode | 3 | 3,032 tok |
| semgrep/semgrep semgrep.dev Lightweight static analysis for many languages. Find bug variants with patterns that look | 16,533 | Claude Code, Codex, OpenCode | 2 | 2,020 tok |
| AgriciDaniel/claude-seo claude-seo.md Universal SEO skill for Claude Code. 25 sub-skills + 18 sub-agents covering technical SEO, | 16,469 | Claude Code, Codex, OpenCode | 2 | 6,692 tok |
| googleapis/mcp-toolbox mcp-toolbox.dev MCP Toolbox for Databases is an open source MCP server for databases. | 16,325 | Claude Code, Codex, Gemini CLI, OpenCode | 3 | 3,619 tok |
| getpaseo/paseo paseo.sh Orchestrate multiple coding agents from desktop and mobile | 16,249 | Claude Code, Codex, OpenCode | 4 | 4,240 tok |
| triggerdotdev/trigger.dev trigger.dev Trigger.dev – build and deploy fully‑managed AI agents and workflows | 16,223 | Claude Code, Codex, GitHub Copilot, Cursor, OpenCode | 11 | 3,528 tok |
| xbtlin/ai-berkshire Berkshire in the AI era: a value investing research framework built for Claude Code / Code | 16,211 | Claude Code, Codex, OpenCode | 2 | 2,391 tok |
| vercel/vercel vercel.com Develop. Preview. Ship. | 16,205 | Codex, OpenCode | 1 | 1,045 tok |
| langchain-ai/openwiki OpenWiki is a CLI that writes and maintains agent documentation for your codebase. | 16,178 | Claude Code, Codex, OpenCode | 2 | 340 tok |
| tradecatlabs/vibe-coding-cn x.com Vibe Coding tutorial from beginner to advanced｜AI pair programming workflow｜Prompt, Skill, | 16,106 | Codex, OpenCode | 1 | 5,556 tok |
| alshedivat/al-folio alshedivat.github.io A beautiful, simple, clean, and responsive Jekyll theme for academics | 16,098 | Claude Code, Codex, GitHub Copilot, OpenCode | 12 | 3,826 tok |
| vercel-labs/json-render json-render.dev The Generative UI framework | 16,098 | Codex, OpenCode | 1 | 1,357 tok |
| scalar/scalar scalar.com Scalar is an open-source API platform: 🌐 Modern REST API Client 📖 Beautiful API Referenc | 16,063 | Claude Code, Codex, OpenCode | 9 | 4,819 tok |
| Kanaries/pygwalker kanaries.net PyGWalker: Turn your dataframe into an interactive UI for visual analysis | 15,957 | Claude Code, Codex, OpenCode | 2 | 3,355 tok |
| FreshRSS/FreshRSS freshrss.org A free, self-hostable news aggregator… | 15,940 | Claude Code, Codex, GitHub Copilot, OpenCode | 9 | 2,241 tok |
| ag-ui-protocol/ag-ui ag-ui.com AG-UI: the Agent-User Interaction Protocol. Bring Agents into Frontend Applications. | 15,752 | Claude Code, Codex, OpenCode | 16 | 1,403 tok |
| spree/spree spreecommerce.org Open Source eCommerce Platform for B2B, Marketplace, and Enterprise. REST API, TypeScript | 15,672 | Claude Code, Codex, OpenCode | 5 | 37,082 tok |
| mobile-dev-inc/Maestro maestro.dev Painless E2E Automation for Mobile and Web | 15,513 | Claude Code, Codex, OpenCode | 4 | 3,171 tok |
| chenhg5/cc-connect Bridge local AI coding agents (Claude Code, Cursor, Gemini CLI, Codex) to messaging platfo | 15,377 | Claude Code, Codex, OpenCode | 2 | 5,282 tok |
| apache/pulsar pulsar.apache.org Apache Pulsar - distributed pub-sub messaging system | 15,326 | Claude Code, Codex, GitHub Copilot, OpenCode | 5 | 1,674 tok |
| pipecat-ai/pipecat pipecat.ai Open Source framework for voice agents, multimodal apps, and realtime AI. Maintained by Da | 15,287 | Claude Code, Codex, OpenCode | 15 | 4,173 tok |
| theonedev/onedev onedev.io The Unified and Autonomous Development Platform | 15,230 | Codex, OpenCode | 1 | 181 tok |
| eigent-ai/eigent eigent.ai Eigent: The Open Source Cowork Desktop - Local and Free Alternative to Claude Cowork and C | 15,205 | Codex, OpenCode | 1 | 608 tok |
| citrolabs/ego-lite lite.ego.app The fastest browser for AI agents to run browser automation, built for sharing your logged | 15,194 | Codex, OpenCode | 1 | 1,577 tok |
| YishenTu/claudian An Obsidian plugin that embeds Claude Code/Codex as an AI collaborator in your vault | 15,191 | Claude Code, Codex, OpenCode | 2 | 2,416 tok |
| open-metadata/OpenMetadata open-metadata.org The Open Context Layer for Data and AI , OpenMetadata is the open platform for building t | 15,119 | Claude Code, Codex, GitHub Copilot, OpenCode | 6 | 9,296 tok |
| opensandbox-group/OpenSandbox open-sandbox.ai Secure, Fast, and Extensible Sandbox runtime for AI agents. | 15,009 | Claude Code, Codex, OpenCode | 2 | 1,714 tok |
| greensock/gsap-skills Official AI skills for GSAP. These skills teach AI coding agents how to correctly use GSAP | 15,003 | Claude Code, Codex, GitHub Copilot, Gemini CLI, OpenCode | 6 | 1,838 tok |