43,750 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 agents7,690Claude Code6,656Data and AI3,669Backend and APIs3,506Languages3,395Planning3,227Git and workflow3,219Code review2,753Testing2,387Memory and context2,368Writing and docs2,331DevOps and cloud2,317Research2,292Frontend2,266Security2,036Productivity1,725
All Claude Code31,992 Codex23,401 OpenCode22,346 GitHub Copilot3,564 Gemini CLI1,917 Cursor1,741 Windsurf146 Kiro83
| Project | Stars | Configures | Files | Always loaded |
|---|---|---|---|---|
| Elnora-AI/elnora-slack Slack for Claude Code — the entire Slack Web API as a CLI (201 methods, 29 groups) plus ag | 2 | Claude Code, Codex, OpenCode | 1 | 1,510 tok |
| WangChangxin0809/repo-agent-harness Lay the foundation that makes a repository teach coding agents how to work in it, then get | 2 | Claude Code | 6 | 975 tok |
| dominikwozniak/dw-solo-skills a persistent Solo Projects spec-to-ship workflow for Claude Code | 2 | Claude Code, Codex, OpenCode | 5 | 1,998 tok |
| systemfsoftware/comment-checker systemfsoftware.com Fast, offline Claude Code hook that flags unnecessary code comments and AI slop via Tree-s | 2 | Claude Code, Codex, OpenCode | 5 | 2,269 tok |
| AndrewDongminYoo/cc-agents-kit skills.donminzzi.kr Claude Code plugin marketplace. guard-hooks: five defensive hooks that block dangerous she | 2 | Claude Code | 1 | 1,352 tok |
| eugeniughelbur/clearmode eugeniughelbur.github.io An anti-AI-slop writing standard and checker for AI-drafted text. Scores any document 0-10 | 2 | Claude Code, Codex, OpenCode | 2 | 1,115 tok |
| Yashraj00700/indian-gov-ui-skills AI agent skills for building accessible Indian government websites — UX4G 3.0.18, DBIM v3, | 2 | Codex, OpenCode | 1 | 868 tok |
| GktuOktay/ai-skills 🚀 Universal Open-Source AI Agent Skills & Rules Library for Antigravity, Cursor, Claude C | 2 | Codex, GitHub Copilot, OpenCode | 2 | 8,202 tok |
| itsasheruwu/Veo itsasheruwu.github.io A native, local-first macOS workspace for Codex, built around your projects and local CLI. | 2 | Claude Code, Codex, OpenCode | 2 | 3,887 tok |
| stormlive-ai/ag-sdd npmjs.com Spec-Driven Development (SDD) harness & skill suite for Google Antigravity (AGY), Gemini 3 | 2 | Codex, OpenCode | 1 | 2,613 tok |
| martin-francois/symphony-trello Turn Trello cards into isolated, autonomous Codex implementation runs, allowing teams to m | 2 | Claude Code, Codex, OpenCode | 16 | 1,135 tok |
| adammatthewsteinberger/clippy-pet adammatthewsteinberger.github.io Unofficial animated paperclip pet for the ChatGPT desktop app & Codex CLI. 9 animations, 1 | 2 | Claude Code, Codex, Gemini CLI, OpenCode | 5 | 2,330 tok |
| Herbertmt978/HA_Codex_Bridge Run Codex privately inside Home Assistant with ChatGPT login, automations, skills, plugins | 2 | Codex, OpenCode | 1 | 757 tok |
| robcmills/cc.nvim neovim native plugin for coding agents (claude code and codex) | 2 | Claude Code | 1 | 2,142 tok |
| igovet/codex-cortex-orchestrator Cortex - Reliable multi-agent orchestration for complex software engineering work in Codex | 2 | Codex, OpenCode | 1 | 2,576 tok |
| sureclaw-ai/copr copr.fedorainfracloud.org https://sureclaw.com.au/ | 2 | Claude Code, Codex | 1 | — |
| kei-prog/shikigami A fast, lightweight TUI for managing development workspaces | 2 | Codex, OpenCode | 1 | 723 tok |
| Reedtrullz/codex-antigravity-auth pypi.org Released local Responses API gateway bringing Google Antigravity Claude Opus/Sonnet, Gemin | 2 | Codex, OpenCode | 1 | 1,676 tok |
| ilyautov/cordon aifrontier.tech A deterministic layer between untrusted content and agent actions: it removes the hidden l | 2 | Codex, OpenCode | 1 | 1,405 tok |
| jaxhemopo/tg-cli-bridge telegram CLI Bridge for antigravity, gemini and Claude CLI agents | 2 | Claude Code, Gemini CLI | 2 | 1,306 tok |
| bysiber/agents-md-tools Lint, secure, and manage AGENTS.md files — the open standard for AI coding agents. ESLint | 2 | Codex, OpenCode | 1 | 250 tok |
| youwei792/agentsmd CI for your AI agent's instructions — generate a grounded AGENTS.md, validate every comman | 2 | Claude Code, Codex, Gemini CLI, OpenCode | 3 | 573 tok |
| Fred-In-tech/learn-as-you-build Stop shipping code you can't explain. An AI coding assistant that teaches while it works — | 2 | Claude Code, Codex, Gemini CLI, OpenCode | 3 | 2,658 tok |
| rhyme17/ai-study-workflow AI-assisted active recall workflow for university learning, final exam review, course PDFs | 2 | Claude Code, Codex, Gemini CLI, OpenCode | 3 | 537 tok |
| thejdubb02/clique useclique.dev Your private clique of CLIs - folder-organised, CLI-agnostic coding sessions in a browser, | 2 | Claude Code | 8 | 2,252 tok |
| chf3198/copilot-governance Portable Copilot governance system: instructions, skills, agents, hooks — cloneable to any | 2 | Claude Code, GitHub Copilot, Gemini CLI | 6 | 4,672 tok |
| sandraschi/openbci-mcp OpenBCI EEG MCP server (BrainFlow + SOTA webapp) | 2 | Codex, OpenCode | 1 | 105 tok |
| aliasunder/vault-onboarding Give your AI agents persistent memory and session continuity in your Obsidian vault — a co | 2 | Claude Code, Codex, OpenCode | 2 | 1,849 tok |
| ngoctranfire/discord-mcp-server An MCP server that gives AI assistants full control of Discord — manage channels, messages | 2 | Codex, OpenCode | 1 | 315 tok |
| crnisamuraj/G0DM0D3-mcp | 2 | Codex, OpenCode | 1 | 3,451 tok |
| jonathan-meyer/zmachine-mcp Model Context Protocol for ZMachine | 2 | Claude Code, GitHub Copilot | 4 | 2,101 tok |
| Trivle/i18n-tools-mcp MCP server for managing JSON translation files. Query, set, add, delete, rename, move, lis | 2 | Claude Code | 1 | 398 tok |
| cristip73/dynalist-mcp MCP Server for Dynalist.io | 2 | Claude Code | 1 | 465 tok |
| peerjakobsen/mcp-gtd AI-native Getting Things Done MCP server with SOP-driven meeting management | 2 | Claude Code | 1 | 1,318 tok |
| bestimmaa/roon-mcp npmjs.com MCP server to control Roon music player via AI agents | 2 | Claude Code, Codex, OpenCode | 2 | 246 tok |
| MeroZemory/suno-multi-mcp Suno AI MCP server (multi-instance fork of sandraschi/suno-mcp) | 2 | Cursor | 1 | 1,872 tok |
| BastianZim/apple-mail-mcp A lightweight, read-only MCP server for Apple Mail. Reads directly from Mail's local SQLit | 2 | Claude Code | 1 | 412 tok |
| WIndFate/legal-ai-agent Production-grade legal AI agent reference implementation — LangGraph + pgvector RAG + MCP | 2 | Claude Code, Codex, OpenCode | 2 | 1,994 tok |
| xmuweili/app-screen-mcp MCP server for iOS Simulator automation — accessibility tree, screenshot, tap/swipe/type, | 2 | Claude Code | 1 | — |
| BoabAI/mcp-cliniko | 2 | Claude Code | 1 | 1,215 tok |
| brunofin/openproject-mcp A Model Context Protocol (MCP) server that enables AI agents to interact with OpenProject' | 2 | Codex, OpenCode | 1 | 1,046 tok |
| piyushptiwari1/mcpkernel pypi.org The Security Kernel for AI Agents — MCP/A2A gateway with policy enforcement, taint trackin | 2 | Claude Code, Codex, GitHub Copilot | 8 | 2,161 tok |
| strelec00/testmo-mcp testmo.com Python MCP server for Testmo - connect Claude, Cursor, and other AI assistants to your Tes | 2 | Claude Code | 1 | 532 tok |
| chriswu727/sibyl pypi.org Evidence retrieval for AI agents. Search, extract, deduplicate, rank, and return auditable | 2 | Codex, OpenCode | 1 | 1,391 tok |
| tubealfred/mcp tubealfred.com Bring YouTube transcripts, comments and channel data into Claude, ChatGPT and Cursor. No Y | 2 | Codex, OpenCode | 1 | 549 tok |
| sandraschi/streamfog-mcp Fastmcp 3.2 server plus webapp for controlling streamfog ar facefilter | 2 | Claude Code, Codex, GitHub Copilot, Cursor, OpenCode, Windsurf | 6 | 1,755 tok |
| lyupro/skillforge-mcp Universal Skills MCP Server — folder-agnostic skill loader for Claude Code, Codex CLI, and | 2 | Claude Code | 1 | 2,514 tok |
| VitexSoftware/mcp-server-abraflexi MCP server for AbraFlexi integration using FastMCP and python-abraflexi | 2 | Codex, OpenCode | 1 | 1,132 tok |
| valentinludu/oblio-mcp MCP Server for the Oblio API, enabling Claude and other MCP compatible platforms to intera | 2 | Cursor | 1 | — |
| Raed2180416/holt raed2180416.github.io See what coding agents changed across Git worktrees. Inspect duplicates, collisions and de | 2 | Claude Code, Codex, OpenCode | 5 | 1,120 tok |