3,491 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 agents7,412Data and AI4,299Backend and APIs3,694Languages3,682Planning3,492Git and workflow3,285Code review2,942Memory and context2,581Research2,499Writing and docs2,458Testing2,454Frontend2,420DevOps and cloud2,410Security2,106Productivity2,076Project management1,686
All Claude Code31,991 Codex23,077 OpenCode21,846 GitHub Copilot3,491 Gemini CLI1,901 Cursor1,721 Kiro33 Windsurf25
| Project | Stars | Configures | Files | Always loaded |
|---|---|---|---|---|
| AvdLee/SwiftUI-Agent-Skill Add expert SwiftUI Best Practices guidance to your AI coding tool (Agent Skills open forma | 3,495 | Claude Code, Codex, GitHub Copilot, OpenCode | 3 | 2,427 tok |
| bytebase/dbhub dbhub.ai Token conscious database MCP server for Postgres, MySQL, SQL Server, MariaDB, SQLite. | 3,464 | Claude Code, GitHub Copilot | 4 | 3,785 tok |
| modelscope/evalscope evalscope.readthedocs.io A streamlined and customizable framework for efficient large model (LLM, VLM, AIGC) evalua | 3,373 | Codex, GitHub Copilot, OpenCode | 2 | 2,884 tok |
| Mesh-LLM/mesh-llm meshllm.cloud Distributed AI/LLM for the people. Share compute privately or publicly to power your agent | 3,358 | Claude Code, Codex, GitHub Copilot, OpenCode | 32 | 11,756 tok |
| Ar9av/obsidian-wiki Framework for AI agents to build and maintain a digital brain through Obsidian wiki | 3,354 | Claude Code, Codex, GitHub Copilot, Gemini CLI, OpenCode | 6 | 4,571 tok |
| AvaloniaCommunity/awesome-avalonia A collection of interesting libraries and tools for Avalonia project. | 3,228 | GitHub Copilot | 1 | 1,736 tok |
| bradygaster/squad bradygaster.github.io Squad: AI agent teams for any project | 3,159 | Claude Code, Codex, GitHub Copilot | 52 | 2,422 tok |
| taylorwilsdon/google_workspace_mcp workspacemcp.com Control Gmail, Google Calendar, Docs, Sheets, Slides, Chat, Forms, Tasks, Search & Drive w | 3,123 | GitHub Copilot | 1 | 1,129 tok |
| pulumi/kubespy pulumi.com Tools for observing Kubernetes resources in real time, powered by Pulumi. | 3,082 | GitHub Copilot | 1 | 1,506 tok |
| spiceai/spiceai docs.spiceai.org Add a real-time analytics node to your operational database. Spice is a portable, accelera | 3,077 | Claude Code, Codex, GitHub Copilot, OpenCode | 4 | 7,983 tok |
| sonos/tract Tiny, no-nonsense, self-contained, Tensorflow and ONNX inference | 3,059 | Claude Code, Codex, GitHub Copilot, Gemini CLI, OpenCode | 4 | 893 tok |
| arcboxlabs/arcbox arcbox.dev Run AI agents on real and isolated machines — own kernel, filesystem, and network — with < | 3,056 | Claude Code, Codex, GitHub Copilot, OpenCode | 3 | 4,748 tok |
| microsoft/Generative-AI-for-beginners-dotnet aka.ms Five lessons, learn how to really apply AI to your .NET Applications | 3,048 | Claude Code, Codex, GitHub Copilot, OpenCode | 24 | 6,616 tok |
| agavra/tuicr tuicr.dev a code review TUI with vim keybindings | 3,044 | Codex, GitHub Copilot, OpenCode | 2 | 9,056 tok |
| Shelf-nu/shelf.nu shelf.nu A free open source IT asset / Equipment / management and scheduling system. | 3,003 | Claude Code, Codex, GitHub Copilot, OpenCode | 15 | 13,457 tok |
| microsoft/skills microsoft.github.io Skills, MCP servers, Custom Agents, Agents.md for SDKs to ground Coding Agents | 2,993 | Claude Code, GitHub Copilot | 8 | 2,575 tok |
| oceanbase/seekdb seekdb.ai The AI-Native Search Database. Best for agent storage, it unifies vector, text, structured | 2,913 | Claude Code, Codex, GitHub Copilot, OpenCode | 3 | 133 tok |
| dataplat/dbatools dbatools.io 🚀 SQL Server automation and instance migrations have never been safer, faster or freer | 2,829 | Claude Code, Codex, GitHub Copilot, OpenCode | 12 | 5,690 tok |
| SRombauts/SQLiteCpp srombauts.github.io SQLiteC++ (SQLiteCpp) is a smart and easy to use C++ SQLite3 wrapper. | 2,781 | Claude Code, Codex, GitHub Copilot, OpenCode | 18 | 3,300 tok |
| ascending-llc/jarvis-registry jarvisregistry.com Connect any AI copilot or autonomous agent to your enterprise tools — through a single, se | 2,772 | Claude Code, Codex, GitHub Copilot, OpenCode | 5 | 7,869 tok |
| microsoft/clarity clarity.microsoft.com A behavioral analytics library that uses dom mutations and user interactions to generate a | 2,740 | Claude Code, GitHub Copilot | 2 | 3,256 tok |
| FluidInference/FluidAudio docs.fluidinference.com Frontier CoreML audio models in your apps — text-to-speech, speech-to-text, voice activity | 2,735 | Claude Code, Codex, GitHub Copilot, OpenCode | 7 | 3,646 tok |
| visa/visa-vulnerability-agentic-harness Visa Vulnerability Agentic Harness | 2,725 | Claude Code, Codex, GitHub Copilot, OpenCode | 3 | 3,632 tok |
| nteract/semiotic semiotic.nteract.io React data visualization library for streaming, networks, and AI-assisted development | 2,690 | Claude Code, Codex, GitHub Copilot, OpenCode | 5 | 1,807 tok |
| nunit/nunit nunit.org NUnit Framework | 2,623 | Claude Code, Codex, GitHub Copilot, OpenCode | 9 | 719 tok |
| Azure/azure-sdk-for-java This repository is for active development of the Azure SDK for Java. For consumers of the | 2,566 | Claude Code, Codex, GitHub Copilot, OpenCode | 17 | 3,984 tok |
| HarleyCoops/Math-To-Manim Create Epic Math and Physics Animations & Study Notes From Text and Images. | 2,565 | Claude Code, Codex, GitHub Copilot, OpenCode | 6 | 12,381 tok |
| harbor-framework/terminal-bench-1 tbench.ai A benchmark for LLMs on complicated tasks in the terminal | 2,564 | Claude Code, GitHub Copilot | 2 | 1,389 tok |
| microsoft/foundry-local foundrylocal.ai | 2,542 | GitHub Copilot | 14 | 10,736 tok |
| simonoppowa/OpenNutriTracker 🍴 OpenNutriTracker is a free and open source calorie tracker with a focus on simplicity a | 2,481 | Claude Code, Codex, GitHub Copilot, OpenCode | 3 | 6,993 tok |
| OpenCloudGaming/OpenNOW Custom GeForce Now Client Named OpenNOW | 2,409 | Claude Code, Codex, GitHub Copilot, OpenCode | 4 | 2,211 tok |
| samuelgursky/davinci-resolve-mcp MCP server integration for DaVinci Resolve Studio | 2,408 | Claude Code, Codex, GitHub Copilot, Cursor, OpenCode | 29 | 6,318 tok |
| utkuozdemir/pv-migrate CLI tool to easily migrate or backup/restore Kubernetes persistent volumes | 2,402 | Claude Code, Codex, GitHub Copilot, Gemini CLI, OpenCode | 4 | 7,176 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 | 2,393 | Claude Code, Codex, GitHub Copilot, Gemini CLI, OpenCode | 7 | 5,299 tok |
| OPCFoundation/UA-.NETStandard OPC Unified Architecture .NET Standard | 2,381 | Claude Code, Codex, GitHub Copilot | 6 | 3,677 tok |
| rsyslog/rsyslog rsyslog.com High-performance log ingestion and ETL engine | 2,335 | Claude Code, Codex, GitHub Copilot, OpenCode | 20 | 6,276 tok |
| Bottelet/DaybydayCRM daybydaycrm.com DaybydayCRM an open-source CRM, to help you keep track of your daily workflow. | 2,326 | Claude Code, Codex, GitHub Copilot, OpenCode | 16 | 1,632 tok |
| llmsresearch/paperbanana Open source implementation and extension of Google Research’s PaperBanana for automated ac | 2,325 | Claude Code, GitHub Copilot | 4 | 890 tok |
| codestoryai/aide aide.dev The open-source AI-native IDE | 2,194 | GitHub Copilot | 1 | 419 tok |
| wondelai/skills skills.wondel.ai Wondel.ai Agent Skills — Business, Marketing, UX & Coding Frameworks from Bestselling Book | 2,108 | Claude Code, GitHub Copilot, Cursor | 3 | 4,236 tok |
| chongdashu/unreal-mcp Enable AI assistant clients like Cursor, Windsurf and Claude Desktop to control Unreal Eng | 2,073 | GitHub Copilot | 1 | 287 tok |
| Lumiwealth/lumibot lumibot.lumiwealth.com Backtestable AI trading agents and Python algorithmic trading strategies for stocks, optio | 2,043 | Claude Code, Codex, GitHub Copilot, OpenCode | 3 | 16,167 tok |
| Azure/azureml-examples docs.microsoft.com Official community-driven Azure Machine Learning examples, tested with GitHub Actions. | 2,027 | GitHub Copilot | 1 | 270 tok |
| Kochava-Studios/witsy Witsy: desktop AI assistant / universal MCP client | 2,024 | Claude Code, Codex, GitHub Copilot, OpenCode | 7 | 5,730 tok |
| coder/xum xum.coder.com A desktop app for isolated, parallel agentic development | 2,004 | Claude Code, Codex, GitHub Copilot, OpenCode | 8 | 10 tok |
| microsoft/azure-devops-mcp The MCP server for Azure DevOps, bringing the power of Azure DevOps directly to your agent | 2,000 | GitHub Copilot | 1 | 311 tok |
| JurajNyiri/HomeAssistant-Tapo-Control Control for Tapo cameras as a Home Assistant component | 1,989 | Claude Code, Codex, GitHub Copilot, Cursor, Gemini CLI, OpenCode | 5 | 1,126 tok |
| zereight/gitlab-mcp zereight.github.io First gitlab mcp for you, building together | 1,953 | Claude Code, GitHub Copilot | 54 | 1,765 tok |
| microsoft/intelligent-terminal devblogs.microsoft.com A fork of Windows Terminal with native agent integration, right in your command line. | 1,925 | Claude Code, Codex, GitHub Copilot, OpenCode | 16 | 30,097 tok |
| quran/quran.com-frontend-next quran.com Frontend build on next.js | 1,905 | Claude Code, Codex, GitHub Copilot, OpenCode | 25 | 518 tok |