24,692 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 |
|---|---|---|---|---|
| muratcankoylan/Agent-Skills-for-Context-Engineering A comprehensive collection of Agent Skills for context engineering, multi-agent architectu | 18,310 | Claude Code, Codex, OpenCode | 2 | 3,938 tok |
| zhanymkanov/fastapi-best-practices FastAPI Best Practices and Conventions we used at our startup | 18,292 | Codex, OpenCode | 1 | 4,106 tok |
| RightNow-AI/openfang openfang.sh Open-source Agent Operating System | 18,243 | Claude Code, Codex, OpenCode | 2 | 1,448 tok |
| lidge-jun/opencodex opencodex.me Universal provider proxy for OpenAI Codex & Claude Code — use any LLM (Claude, Gemini, Gro | 18,235 | Codex, OpenCode | 1 | 6,679 tok |
| rowboatlabs/rowboat rowboatlabs.com AI coworker with memory and collaboration | 18,134 | Claude Code, Codex, OpenCode | 2 | 459 tok |
| Canner/WrenAI getwren.ai GenBI (Generative BI) for AI agents, an open-source, governed text-to-SQL through an open | 18,087 | Claude Code, Codex, OpenCode | 2 | 123 tok |
| larksuite/cli The official Lark/Feishu CLI tool, maintained by the larksuite team — built for humans and | 17,986 | Codex, OpenCode | 1 | 3,126 tok |
| greensock/gsap-skills Official AI skills for GSAP. These skills teach AI coding agents how to correctly use GSAP | 17,947 | Claude Code, Codex, GitHub Copilot, Gemini CLI, OpenCode | 6 | 1,838 tok |
| itwanger/toBeBetterJavaer javabetter.cn An easy-to-understand, witty, and humorous Java learning guide covering core topics includ | 17,826 | Claude Code, Codex, OpenCode | 14 | 1,397 tok |
| tradingview/lightweight-charts tradingview.com Performant financial charts built with HTML5 canvas | 17,775 | Claude Code, Codex | 2 | — |
| langchain-ai/openwiki OpenWiki is a CLI that writes and maintains agent documentation for your codebase. | 17,774 | Claude Code, Codex, OpenCode | 2 | 318 tok |
| leon-ai/leon getleon.ai 🧠 Leon is your open-source personal assistant. | 17,646 | Claude Code, Codex, OpenCode | 2 | 2,307 tok |
| microsoft/mcp-for-beginners This open-source curriculum introduces the fundamentals of Model Context Protocol (MCP) th | 17,609 | Codex, OpenCode | 1 | 3,209 tok |
| semgrep/semgrep semgrep.dev Lightweight static analysis for many languages. Find bug variants with patterns that look | 17,493 | Claude Code, Codex, OpenCode | 2 | 2,125 tok |
| architecture-decision-record/architecture-decision-record Architecture decision record (ADR) examples for software planning, IT leadership, and temp | 17,407 | Codex, OpenCode | 1 | 728 tok |
| apache/apisix apisix.apache.org The Cloud-Native API Gateway and AI Gateway | 17,297 | Codex, OpenCode | 1 | 354 tok |
| coder/coder coder.com Secure environments for developers and their agents | 17,290 | Claude Code, Codex, Cursor, OpenCode | 16 | 1,968 tok |
| ipfs/kubo docs.ipfs.tech IPFS implementation in Go: a daemon that stores and serves content-addressed data, with a | 17,175 | Codex, OpenCode | 1 | 7,449 tok |
| pipecat-ai/pipecat pipecat.ai Open Source framework for voice agents, multimodal apps, and realtime AI. Maintained by Da | 17,082 | Claude Code, Codex, OpenCode | 15 | 5,856 tok |
| ag-ui-protocol/ag-ui ag-ui.com AG-UI: the Agent-User Interaction Protocol. Bring Agents into Frontend Applications. | 17,038 | Claude Code, Codex, OpenCode | 16 | 1,403 tok |
| xbtlin/ai-berkshire xbtlin.github.io Berkshire in the AI era: a value investing research framework built for Claude Code / Code | 17,025 | Claude Code, Codex, OpenCode | 2 | 2,590 tok |
| googleapis/mcp-toolbox mcp-toolbox.dev MCP Toolbox for Databases is an open source MCP server for databases. | 16,814 | Claude Code, Codex, Gemini CLI, OpenCode | 3 | 4,028 tok |
| MODSetter/SurfSense surfsense.com Air-gapped, privacy-focused, open-source NotebookLM alternative. AI agent that researches, | 16,789 | Claude Code, Codex, OpenCode | 11 | 2,352 tok |
| Arindam200/awesome-ai-apps studio1hq.com A collection of projects showcasing RAG, agents, workflows, and other AI use cases | 16,722 | Claude Code, Codex, GitHub Copilot, OpenCode | 4 | 3,496 tok |
| triggerdotdev/trigger.dev trigger.dev Trigger.dev – build and deploy durable AI agents and workflows | 16,720 | Claude Code, Codex, GitHub Copilot, Cursor, OpenCode | 10 | 3,720 tok |
| FlashML-org/FreeToken FreeToken brings datacenter-scale model serving to your desktop. Run massive models locall | 16,715 | Claude Code, Codex, OpenCode | 2 | 1,355 tok |
| umijs/qiankun qiankun.umijs.org 📦 🚀 Blazing fast, simple and complete solution for micro frontends. | 16,704 | Claude Code, Codex, OpenCode | 3 | 3,063 tok |
| udecode/plate platejs.org Rich-text editor with AI and shadcn/ui | 16,690 | Claude Code, Codex, GitHub Copilot, OpenCode | 45 | 10,760 tok |
| vercel/vercel vercel.com Develop. Preview. Ship. | 16,534 | Codex, OpenCode | 1 | 1,585 tok |
| FreshRSS/FreshRSS freshrss.org A free, self-hostable news aggregator… | 16,515 | Claude Code, Codex, GitHub Copilot, OpenCode | 9 | 2,277 tok |
| opensandbox-group/OpenSandbox open-sandbox.ai Secure, Fast, and Extensible Sandbox runtime for AI agents. | 16,463 | Claude Code, Codex, OpenCode | 3 | 1,966 tok |
| scalar/scalar scalar.com Scalar is an open-source API platform: 🌐 Modern REST API Client 📖 Beautiful API Referenc | 16,381 | Claude Code, Codex, OpenCode | 10 | 6,314 tok |
| mobile-dev-inc/Maestro maestro.dev Painless E2E Automation for Mobile and Web | 16,339 | Claude Code, Codex, OpenCode | 6 | 3,796 tok |
| alshedivat/al-folio alshedivat.github.io A beautiful, simple, clean, and responsive Jekyll theme for academics | 16,309 | Claude Code, Codex, GitHub Copilot, OpenCode | 12 | 3,826 tok |
| GreyDGL/PentestGPT Automated Penetration Testing Agentic Framework Powered by Large Language Models | 16,287 | Claude Code, Codex | 18 | 780 tok |
| chenhg5/cc-connect Bridge local AI coding agents (Claude Code, Cursor, Gemini CLI, Codex) to messaging platfo | 16,255 | Claude Code, Codex, OpenCode | 2 | 5,282 tok |
| AgriciDaniel/claude-obsidian Self-organizing AI second brain for Obsidian + Claude Code. Drop any source and Claude rea | 16,203 | Claude Code, Codex, GitHub Copilot, Gemini CLI, OpenCode | 3 | 1,529 tok |
| Kanaries/pygwalker kanaries.net PyGWalker: Turn your dataframe into an interactive UI for visual analysis | 16,003 | Claude Code, Codex, OpenCode | 2 | 3,355 tok |
| YishenTu/claudian An Obsidian plugin that embeds Claude Code, Codex and other agents as an AI collaborator i | 15,915 | Codex, OpenCode | 1 | 931 tok |
| spree/spree spreecommerce.org Open Source Platform for DTC, B2B Commerce, Marketplaces & Omnichannel. REST APIs, TypeScr | 15,811 | Claude Code, Codex, OpenCode | 5 | 2,094 tok |
| superset-sh/superset superset.sh Paradev (formerly Superset) is an agentic IDE to orchestrate 100+ coding agents in paralle | 15,800 | Claude Code, Codex, GitHub Copilot, OpenCode | 31 | 3,629 tok |
| eigent-ai/eigent eigent.ai Eigent: The Open Source Cowork Desktop - Local and Free Alternative to Claude Cowork and C | 15,751 | Codex, OpenCode | 1 | 608 tok |
| open-metadata/OpenMetadata open-metadata.org The Open Context Layer for Data and AI , OpenMetadata is the open platform for building t | 15,691 | Claude Code, Codex, GitHub Copilot, OpenCode | 6 | 4,174 tok |
| yc-software/qm x.com Multiplayer agent harness for work. | 15,646 | Claude Code, Codex, OpenCode | 7 | 2,592 tok |
| apache/pulsar pulsar.apache.org Apache Pulsar - distributed pub-sub messaging system | 15,356 | Claude Code, Codex, GitHub Copilot, OpenCode | 5 | 1,871 tok |
| theonedev/onedev onedev.io The Unified and Autonomous Development Platform | 15,343 | Codex, OpenCode | 1 | 565 tok |
| NanmiCoder/cc-haha cchaha.ai Local-first cross-platform Claude Code / AI Agent desktop workspace: multi-agent collabora | 15,320 | Codex, GitHub Copilot, OpenCode | 2 | 1,713 tok |
| yusufkaraaslan/Skill_Seekers skillseekersweb.com Convert documentation websites, GitHub repositories, and PDFs into Claude AI skills with a | 15,283 | Claude Code, Codex, OpenCode | 2 | 9,413 tok |
| akitaonrails/ai-memory Solution for long term memory for agent coding CLIs and to facilitate handoff between diff | 15,226 | Claude Code, Codex, OpenCode | 2 | 13,802 tok |
| alexta69/metube Self-hosted video downloader for YouTube and other sites (web UI for yt-dlp) | 15,198 | Codex, OpenCode | 1 | 2,253 tok |