3,501 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 |
|---|---|---|---|---|
| storybookjs/mcp storybook-evals.vercel.app 🤖 | 270 | GitHub Copilot | 4 | 17,082 tok |
| radix-ng/primitives radix-ng.com Headless, signals-first UI primitives for Angular. Accessible. Customizable. | 270 | Claude Code, Codex, GitHub Copilot, OpenCode | 17 | 11,052 tok |
| DitriXNew/EDT-MCP MCP for 1C:EDT | 270 | Claude Code, GitHub Copilot | 15 | 3,654 tok |
| gregs1104/pgbent PostgreSQL Benchmarking Toolkit | 269 | Codex, GitHub Copilot, OpenCode | 2 | 1,244 tok |
| Azure/awesome-azd aka.ms An awesome list that curates content (articles, videos, tutorials and docs) and templates | 268 | GitHub Copilot | 1 | 3,240 tok |
| mariuz/flamerobin flamerobin.org FlameRobin is a database administration tool for Firebird RDBMS. Our goal is to build a to | 262 | Claude Code, Codex, GitHub Copilot | 2 | 1,376 tok |
| ruby-grape/grape-swagger-rails Swagger UI as Rails Engine for grape-swagger gem. | 261 | Claude Code, GitHub Copilot | 2 | 1,422 tok |
| Scottcjn/rustchain-bounties rustchain.org Earn RTC crypto by contributing to the RustChain ecosystem. Bounties from 1-150 RTC. Star, | 261 | GitHub Copilot | 2 | 505 tok |
| klboke/kkRepo kkrepo.cn kkRepo is a Nexus-compatible, self-hosted artifact repository for Maven, npm, PyPI, Go, He | 260 | Claude Code, Codex, GitHub Copilot, OpenCode | 10 | 3,046 tok |
| Azure/kimojio-rs A thread-per-core Linux io_uring async runtime for Rust optimized for latency. | 260 | Claude Code, Codex, GitHub Copilot | 2 | 225 tok |
| axa-group/oauth2-mock-server npmjs.com A development and test oriented OAuth2 mock server | 258 | Codex, GitHub Copilot, OpenCode | 2 | 2,265 tok |
| aws-samples/sample-well-architected-skills-and-steering aws.amazon.com Reusable skills and steering that teach AI coding agents how to apply the AWS Well-Archite | 258 | GitHub Copilot | 1 | 569 tok |
| DIGI-UW/OpenELIS-Global-2 openelis-global.org OpenELIS Global — open-source Laboratory Information System (LIS/LIMS) for clinical and pu | 251 | Claude Code, Codex, GitHub Copilot, OpenCode | 32 | 23,972 tok |
| The-AI-Alliance/tapestry thealliance.ai Project Tapestry aims to give every nation and participant frontier AI they can call their | 251 | Codex, GitHub Copilot, OpenCode | 2 | 3,075 tok |
| duckduckgo/apple-browsers duckduckgo.com DuckDuckGo iOS & macOS browsers | 251 | Claude Code, Codex, GitHub Copilot, OpenCode | 7 | 459 tok |
| microsoft/GitHub-Copilot-for-Azure GitHub Copilot for Azure | 249 | GitHub Copilot | 2 | 4,017 tok |
| finos/git-proxy git-proxy.finos.org Deploy custom push protections and policies on top of Git | 248 | Claude Code, Codex, GitHub Copilot, OpenCode | 17 | 2,404 tok |
| EmpiricaAI/empirica getempirica.com Make AI agents and AI workflows measurably reliable. Epistemic measurement, Noetic RAG, | 247 | Claude Code, Codex, GitHub Copilot, Cursor, OpenCode | 3 | 6,962 tok |
| SCStelz/security-investigator Automated security investigation tool using Microsoft MCP Servers, GitHub Copilot, Python | 244 | Claude Code, Codex, GitHub Copilot | 29 | 22,159 tok |
| estruyf/vscode-demo-time demotime.show A Visual Studio Code extension to help you script your demos | 243 | Claude Code, GitHub Copilot | 2 | 742 tok |
| felipebarcelospro/igniter-js igniterjs.com Igniter is a modern, type-safe HTTP framework designed to streamline the development of sc | 242 | Codex, GitHub Copilot, Gemini CLI, OpenCode | 4 | 26,005 tok |
| laiso/ts-bench laiso.github.io Benchmark CLI for comparing AI coding agents on TypeScript workloads. | 240 | Codex, GitHub Copilot, OpenCode | 2 | 343 tok |
| ErikEJ/SqlServer.Rules 140+ T-SQL static code analysis rules for SQL Database Projects | 240 | Claude Code, GitHub Copilot | 2 | 3,767 tok |
| leancoderkavy/premiere-pro-mcp premiere-pro-mcp.com Local-first Adobe Premiere Pro MCP: 344 structured tools, reviewable workflows, CEP bridge | 237 | GitHub Copilot | 1 | 653 tok |
| oculus-samples/Unity-MRMotifs The developer community is beginning to show the world why Mixed Reality can be special. D | 236 | Claude Code, Codex, GitHub Copilot, Gemini CLI, OpenCode | 6 | 1,089 tok |
| responsibleai/ASSERT responsibleai.github.io Requirement-driven evaluation harness for AI agents and LLM applications. Generate behavio | 236 | Claude Code, Codex, GitHub Copilot, Cursor, OpenCode | 7 | 6,087 tok |
| microsoft/discovery Microsoft Discovery community repository | 236 | Claude Code, Codex, GitHub Copilot | 5 | 2,104 tok |
| holtwood/awesome-cursorrules-zh lessup.github.io A curated collection of Cursor AI programming rules | 132+ rules covering 32 areas, includ | 232 | Claude Code, Codex, GitHub Copilot, OpenCode | 3 | 1,485 tok |
| andreaskelm/pm-brain AI-powered product management thinking & operating system. Playbooks, guides, templates, a | 231 | Claude Code, Codex, GitHub Copilot, OpenCode | 4 | 4,141 tok |
| microsoft/P.808 This is an open-source implementation of the ITU P.808 standard for "Subjective evaluation | 230 | Claude Code, Codex, GitHub Copilot, OpenCode | 6 | 1,712 tok |
| bx33661/Wireshark-MCP Wireshark-MCP，Give your AI assistant a packet analyzer. Drop a .pcap file, ask questions i | 230 | Claude Code, GitHub Copilot | 3 | 235 tok |
| OpenEVSE/openevse_esp32_firmware OpenEVSE v6 WiFi gateway using ESP32 | 229 | Claude Code, Codex, GitHub Copilot, OpenCode | 3 | 2,206 tok |
| ioteverythin/OpenDocs | 229 | Claude Code, GitHub Copilot | 2 | 293 tok |
| vyos/vyos-documentation VyOS readthedocs | 228 | Codex, GitHub Copilot, OpenCode | 3 | 4,720 tok |
| GoogleCloudPlatform/race-condition developers.google.com The open source multi-agent simulation from the Developer Keynote at Google Cloud Next '26 | 227 | Claude Code, Codex, GitHub Copilot, Cursor, Gemini CLI, OpenCode | 5 | 2,675 tok |
| qualixar/superlocalmemory superlocalmemory.com Open-source governed, local-first memory control plane for AI agents and teams. arXiv:2608 | 224 | Codex, GitHub Copilot, OpenCode | 2 | 1,462 tok |
| bitrouter/bitrouter bitrouter.ai The context-aware model router that learns & adapts to your long-horizon coding agent work | 224 | Claude Code, Codex, GitHub Copilot, OpenCode | 3 | 1,657 tok |
| streamlit/agent-skills A collection of agent skills for development of Streamlit apps. | 224 | Claude Code, Codex, GitHub Copilot, OpenCode | 3 | 1,428 tok |
| timothywarner-org/claude-code techtrainertim.com Claude Code and Large-Context Reasoning (O'Reilly Live Learning) | 223 | Claude Code, GitHub Copilot | 23 | 5,219 tok |
| codemonkey85/PKMDS-Blazor pkmds.app PKMDS: Pokémon Save Editor for Web (no support for game hacks) | 223 | Claude Code, Codex, GitHub Copilot, OpenCode | 8 | 5,037 tok |
| Penecruz/VAICOM-Community VAICOM for DCS World | 223 | Claude Code, GitHub Copilot | 2 | 1,027 tok |
| kooshi/SharpToolsMCP A suite of MCP tools for AIs to analyze and modify C# solutions with high signal, Roslyn p | 222 | GitHub Copilot | 1 | 1,014 tok |
| SamMorrowDrums/remarkable-mcp MCP server for accessing reMarkable tablet data - sync files, extract text from highlights | 218 | GitHub Copilot | 1 | 1,893 tok |
| aethersdr/AetherSDR aethersdr.com Native amateur-radio workstation for FlexRadio (FLEX-6000/8000/Aurora) — Linux, macOS, Win | 217 | Claude Code, Codex, GitHub Copilot, Gemini CLI, OpenCode | 6 | 17,502 tok |
| yuanboP/frugal | 216 | Codex, GitHub Copilot, OpenCode | 2 | 986 tok |
| TentacleOpera/switchboard Switchboard plugin for VS Code, enables subscription-based AI agent teams | 214 | Claude Code, Codex, GitHub Copilot, Cursor, OpenCode | 5 | 10,991 tok |
| mduongvandinh/llm-wiki Hệ thống knowledge base cá nhân hoàn toàn tự động, vận hành bởi LLM. Dựa trên pattern LLM | 213 | Claude Code, Codex, GitHub Copilot, Gemini CLI, OpenCode | 4 | 6,513 tok |
| dotnet/maui-labs dot.net Experimental and pre-release tools for .NET MAUI | 213 | Claude Code, Codex, GitHub Copilot, OpenCode | 13 | 18,761 tok |
| QuantClaw/QuantClaw a C++ implementation of OpenClaw, designed for extremely performance and memory efficiency | 212 | GitHub Copilot | 1 | 737 tok |
| DandanLLab/legadoSkill | 211 | Claude Code, Codex, GitHub Copilot | 3 | 795 tok |