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 |
|---|---|---|---|---|
| module-federation/core module-federation.io Module Federation is a concept that allows developers to share code and resources across m | 2,677 | Claude Code, Codex, Cursor, OpenCode | 10 | 6,350 tok |
| CodeBoarding/CodeBoarding codeboarding.org Interactive architecture diagrams for codebases | 2,663 | Claude Code, Codex, OpenCode | 2 | 1,829 tok |
| mongodb/mongo-java-driver mongodb.com The official MongoDB drivers for Java, Kotlin, and Scala | 2,661 | Claude Code, Codex, OpenCode | 4 | 1,072 tok |
| AgriciDaniel/claude-blog Free, open source blog writer for Claude Code. Researches current sources, writes answer-f | 2,656 | Claude Code | 1 | 3,717 tok |
| lichess-org/mobile Lichess mobile app | 2,650 | Claude Code, Codex, OpenCode | 2 | 2,377 tok |
| plexe-ai/plexe plexe.ai ✨ Build a machine learning model from a prompt | 2,648 | Claude Code, Codex, OpenCode | 2 | 1,434 tok |
| oxsecurity/megalinter megalinter.io 🦙 MegaLinter analyzes 50 languages, 22 formats, 21 tooling formats, excessive copy-pastes | 2,647 | Claude Code | 34 | 2,792 tok |
| alexbelgium/hassio-addons My homeassistant addons | 2,646 | Claude Code, GitHub Copilot | 6 | 3,193 tok |
| Agent-Field/agentfield agentfield.ai Build, run and scale AI agents like API and microservices | 2,644 | Claude Code, Codex, OpenCode | 2 | 4,146 tok |
| SummerSec/ShiroAttack2 Comprehensive exploitation of Shiro deserialization vulnerabilities (for authorized testin | 2,640 | Claude Code, Codex, OpenCode | 3 | 2,182 tok |
| softaworks/agent-toolkit A curated collection of skills for AI coding agents. Skills are packaged instructions and | 2,635 | Claude Code, Codex, OpenCode | 2 | 755 tok |
| samanhappy/mcphub mcphub.app Self-hosted MCP gateway and control plane for connecting, controlling, and operating MCP s | 2,634 | Claude Code, Codex, OpenCode | 3 | 602 tok |
| nunit/nunit nunit.org NUnit Framework | 2,632 | Claude Code, Codex, GitHub Copilot, OpenCode | 10 | 724 tok |
| vercel-labs/vgpu vgpu.sh Modular cross-runtime WebGPU library for shaders, 3D scenes, GPU tensors, neural networks, | 2,620 | Claude Code, Codex, OpenCode | 3 | 1,008 tok |
| harbor-framework/terminal-bench-1 tbench.ai A benchmark for LLMs on complicated tasks in the terminal | 2,614 | Claude Code, GitHub Copilot | 2 | 1,389 tok |
| kayba-ai/agentic-context-engine kayba.ai 🧠 Make your agents learn from experience. Now available as a hosted solution at kayba.ai | 2,608 | Claude Code, Codex, OpenCode | 19 | 2,759 tok |
| David-Crty/databasement david-crty.github.io Self-hosted database backup manager with a web UI. Schedule, backup, and restore MySQL, Po | 2,606 | Claude Code, Codex | 5 | 13,697 tok |
| heyitsnoah/claudesidian | 2,605 | Claude Code, Codex | 23 | — |
| wondelai/skills skills.wondel.ai Wondel.ai Agent Skills — Business, Marketing, UX & Coding Frameworks from Bestselling Book | 2,602 | Claude Code, GitHub Copilot, Cursor | 3 | 4,287 tok |
| Piebald-AI/tweakcc Customize Claude Code's system prompts, create custom toolsets, input pattern highlighters | 2,598 | Claude Code, Codex, OpenCode | 3 | 883 tok |
| terryyin/lizard A simple code complexity analyser without caring about the C/C++ header files or Java impo | 2,585 | Claude Code, Codex, OpenCode | 27 | 407 tok |
| sdyckjq-lab/llm-wiki-skill A personal knowledge-base building Skill based on the Karpathy llm-wiki methodology, suppo | 2,581 | Claude Code, Codex, OpenCode | 2 | 4,044 tok |
| kacperkapusciak/goldie ✨ agentic app store previews and screenshots | 2,578 | Claude Code | 4 | 360 tok |
| graphistry/pygraphistry PyGraphistry is a Python library to quickly load, shape, embed, and explore big graphs wit | 2,577 | Claude Code, Codex, OpenCode | 8 | 479 tok |
| mflux-community/mflux Apple MLX native implementations of state-of-the-art generative image & video models | 2,576 | Claude Code, Codex, Cursor, OpenCode | 13 | 968 tok |
| neilotoole/sq sq.io sq data wrangler | 2,574 | Claude Code, Codex, OpenCode | 6 | 4,477 tok |
| nitrocloudofficial/nitrostack nitrostack.ai The full-stack TypeScript framework to build, test, and deploy production-ready MCP server | 2,567 | Claude Code | 1 | — |
| Azure/azure-sdk-for-java This repository is for active development of the Azure SDK for Java. For consumers of the | 2,563 | Claude Code, Codex, GitHub Copilot, OpenCode | 18 | 3,984 tok |
| K-Dense-AI/claude-scientific-writer k-dense.ai A general purpose scientific writer | 2,556 | Claude Code, Codex, OpenCode | 28 | 10,828 tok |
| Nano-Collective/nanocoder docs.nanocollective.org An open coding agent for your terminal, built by a community collective rather than a comp | 2,552 | Claude Code, Codex, OpenCode | 2 | 4,597 tok |
| DrCatHicks/learning-opportunities A Claude or Codex skill for deliberate skill development during AI-assisted coding | 2,543 | Claude Code | 1 | 466 tok |
| pingcap/ossinsight ossinsight.io Analysis, Comparison, Trends, Rankings of Open Source Software, you can also get insight f | 2,523 | Claude Code | 1 | — |
| openwebf/webf openwebf.com Bring JavaScript and Web Dev to Flutter | 2,518 | Claude Code, Codex, OpenCode | 13 | 2,407 tok |
| natolambert/rlhf-book rlhfbook.com Textbook on reinforcement learning from human feedback | 2,500 | Claude Code, Codex, OpenCode | 8 | 1,668 tok |
| noamseg/interview-coach-skill | 2,494 | Claude Code | 1 | — |
| vercel/workflow workflow-sdk.dev Workflow SDK: Build durable, reliable, and observable apps and AI Agents in TypeScript | 2,493 | Claude Code, Codex, OpenCode | 5 | 10,423 tok |
| MrGeDiao/shuorenhua Chinese-first rewrite skill for Codex / Claude Code / Cursor / ChatGPT — removes AI tone, | 2,491 | Claude Code, Codex, OpenCode | 2 | 463 tok |
| Infisical/agent-vault docs.agent-vault.dev A HTTP credential proxy and vault for AI agents like Claude Code, OpenClaw, Hermes, custom | 2,481 | Claude Code, Codex, OpenCode | 4 | 3,229 tok |
| Draculabo/AntigravityManager Antigravity Manager is a desktop application for managing the Google accounts used by Anti | 2,469 | Claude Code, Codex, OpenCode | 45 | 2,253 tok |
| RAIT-09/obsidian-agent-client rait-09.github.io Bring AI agents into Obsidian via Agent Client Protocol (ACP), such as Claude Code, Codex | 2,468 | Claude Code, Codex, GitHub Copilot, Gemini CLI, OpenCode | 7 | 5,375 tok |
| PimpinPumpkin/Vela velamaps.org Maps and turn-by-turn navigation for Android without Google Play Services: the best of ope | 2,467 | Claude Code | 1 | 9,499 tok |
| llmsresearch/paperbanana Open source implementation and extension of Google Research’s PaperBanana for automated ac | 2,466 | Claude Code, GitHub Copilot | 4 | 890 tok |
| Django-CRM/Django-CRM bottlecrm.io BottleCRM: free, open-source (MIT) CRM with sales, support tickets and invoicing in one ap | 2,464 | Claude Code | 1 | 3,746 tok |
| subsy/ralph-tui ralph-tui.com | 2,461 | Claude Code, Codex, OpenCode | 3 | 1,095 tok |
| exceptionless/Exceptionless exceptionless.com Exceptionless application | 2,456 | Claude Code, Codex, OpenCode | 16 | 2,274 tok |
| digitalsamba/claude-code-video-toolkit AI-native video production toolkit for Claude Code | 2,453 | Claude Code, Codex, OpenCode | 3 | 13,631 tok |
| vercel/chat chat-sdk.dev Universal chat layer for building bots and agents. | 2,451 | Claude Code, Codex, OpenCode | 4 | 1,381 tok |
| jnMetaCode/agency-orchestrator ao.aiolaola.com 🚀 One sentence → your one-person company of AI experts → complete deliverable in minutes. | 2,447 | Claude Code | 1 | 7,998 tok |
| antonbabenko/terraform-skill Terraform & OpenTofu Skill for AI Agents - testing, modules, CI/CD, and production pattern | 2,446 | Claude Code | 1 | 2,390 tok |
| lestrrat-go/jwx Complete implementation of JWx (Javascript Object Signing and Encryption/JOSE) technologie | 2,444 | Claude Code, Codex, OpenCode | 3 | 3,354 tok |