22,198 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 agents7,609Claude Code6,644Data and AI3,677Backend and APIs3,502Languages3,403Planning3,220Git and workflow3,193Code review2,743Testing2,377Memory and context2,363DevOps and cloud2,314Writing and docs2,311Research2,293Frontend2,259Security2,022Productivity1,721
All Claude Code32,006 Codex23,251 OpenCode22,198 GitHub Copilot3,552 Gemini CLI1,917 Cursor1,737 Windsurf138 Kiro81
| Project | Stars | Configures | Files | Always loaded |
|---|---|---|---|---|
| mlorentedev/pdf-modifier-mcp MCP server + CLI for PDF text replacement with font style preservation | 2 | Codex, OpenCode | 1 | 2,152 tok |
| noclickapp/noclick noclick.com Build agents to automate any background task; works with your ChatGPT/Claude subscription. | 2 | Claude Code, Codex, OpenCode | 7 | 2,301 tok |
| sandraschi/overte-mcp Overte (classic Vircadia-lineage) MCP server + dashboard for domain admin and entity orche | 2 | Codex, Cursor, OpenCode | 2 | 606 tok |
| valuein/valuein valuein.biz We provide documentation and resources for 12M+ SEC filings and 105M+ raw facts. This is a | 2 | Claude Code, Codex, OpenCode | 2 | 9,018 tok |
| tufantunc/axiom-advanced-math-mcp npmjs.com Exact symbolic math for LLMs: integrals, equations, matrices, and claim verification via G | 2 | Codex, OpenCode | 1 | 1,272 tok |
| Catfish-75/claw-task-hub Local-first, Linear-like task hub for AI agents and agentic harnesses | 2 | Codex, OpenCode | 1 | 472 tok |
| ssheleg/sheleg-design-skill skills.sshlg.me Visual-system skill for coding agents: a library of locked style packs, design tokens, cin | 2 | Codex, OpenCode | 1 | 27 tok |
| ddalgrande/dining-places-skill Agent Skill that turns your Google Maps saved places into a personal dining knowledge base | 2 | Claude Code, Codex, OpenCode | 2 | 555 tok |
| equinor/fusion-skills Fusion repo for agent skills | 2 | Claude Code, Codex, GitHub Copilot, OpenCode | 11 | 5,529 tok |
| RandyNorthrup/high-quality-projects-skill Vendor-neutral project discovery, feature delivery, and quality retrofit. Scan and enhance | 2 | Codex, GitHub Copilot, OpenCode | 2 | 1,824 tok |
| Fandhe-AI/agent-cli-skills | 2 | Claude Code, Codex, OpenCode | 9 | 8,413 tok |
| coval-ai/mcp-server coval.dev MCP server for Coval that enables AI assistants to launch evaluations, manage test sets, a | 2 | Codex, OpenCode | 1 | 895 tok |
| DespotB/handelsregister-cli Search the German commercial register (Handelsregister) and download all registry document | 2 | Claude Code, Codex, Gemini CLI, OpenCode | 3 | 1,057 tok |
| gzb1128/opencode-plugin A CLI tool that brings the Claude Code plugin marketplace ecosystem to OpenCode — install, | 2 | Codex, OpenCode | 1 | 1,823 tok |
| ventusff/claude-model-guard 🚨 Claude Code statusline plugin that catches silent model downgrades — theme-proof full-w | 2 | Claude Code, Codex, OpenCode | 2 | 2,142 tok |
| 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 |
| dominikwozniak/dw-solo-skills a persistent Solo Projects spec-to-ship workflow for Claude Code | 2 | Claude Code, Codex, OpenCode | 5 | 1,998 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 |
| 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 |
| igovet/codex-cortex-orchestrator Cortex - Reliable multi-agent orchestration for complex software engineering work in Codex | 2 | Codex, OpenCode | 1 | 2,576 tok |
| 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 | 1,605 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 |
| agentlint/agentlint agentlint.sh The Lighthouse for AI coding agents. Audit any repo for how ready it is for Claude Code, C | 2 | Claude Code, Codex, GitHub Copilot, OpenCode | 4 | 3,497 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 |
| 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 |
| bestimmaa/roon-mcp npmjs.com MCP server to control Roon music player via AI agents | 2 | Claude Code, Codex, OpenCode | 2 | 246 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 |
| 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 |
| VitexSoftware/mcp-server-abraflexi MCP server for AbraFlexi integration using FastMCP and python-abraflexi | 2 | Codex, OpenCode | 1 | 1,072 tok |
| 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 |
| pnmcguire480/cairntir Local-first persistent memory MCP server for Claude Code, Codex, Cursor, Qwen Code, and AI | 2 | Claude Code, Codex, OpenCode | 2 | 3,528 tok |
| jpantsjoha/pinescript-plugin jpantsjoha.com Pine Script v6 skills and MCP tooling for coding agents — backed by a real validator, not | 2 | Codex, Gemini CLI, OpenCode | 2 | 627 tok |
| shayanline/msloop-mcp MCP server for Microsoft Loop. No app registration required, reuses your existing Loop web | 2 | Codex, OpenCode | 1 | 1,341 tok |
| davidsolheim/grok-chrome-bridge Chrome extension that lets Grok Build attach to the profile you mark Active. | 2 | Codex, OpenCode | 1 | 152 tok |
| postalform/agent-mail-mcp postalform.com Send physical mail from an AI agent. An open MCP server for agent-payable mail - print and | 2 | Codex, OpenCode | 1 | 279 tok |
| babybuddy/babybuddy-mcp | 2 | Codex, OpenCode | 1 | 1,227 tok |
| snow-wind-001/CodeRecoder CodeRecoder: MCP for recode the Code | 2 | Claude Code, Codex, OpenCode | 2 | 1,280 tok |
| t-rhex/obsidian-mcp-server MCP server for Obsidian vaults — direct filesystem access with git sync, wikilinks, and fr | 2 | Claude Code, Codex, OpenCode | 2 | 839 tok |
| rementum/rementum rementum.dev Self-hosted shared memory infrastructure for AI agents with versioned knowledge and confli | 2 | Claude Code, Codex, OpenCode | 2 | 2,174 tok |