23,733 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 agents8,505Claude Code6,886Git and workflow3,611Data and AI3,580Backend and APIs3,556Languages3,487Planning3,327Code review2,899Testing2,686Writing and docs2,480DevOps and cloud2,479Memory and context2,375Research2,323Frontend2,308Security2,172Project management1,965
All Claude Code32,517 Codex24,815 OpenCode23,733 GitHub Copilot3,719 Gemini CLI2,034 Cursor1,770 Windsurf202 Kiro114
| Project | Stars | Configures | Files | Always loaded |
|---|---|---|---|---|
| pvliesdonk/markdown-vault-mcp pvliesdonk.github.io Generic markdown vault MCP with hybrid search | 38 | Claude Code, Codex, OpenCode | 17 | 3,944 tok |
| koreyba/Claude-Skill-pdf-to-epub Contains clause skills that can be installed to AI agents. | 38 | Codex, OpenCode | 1 | 486 tok |
| 2233admin/obsidian-llm-wiki Your markdown vault, compiled into a 6-persona MCP team for Claude Code, Codex, OpenCode, | 38 | Claude Code, Codex, OpenCode | 8 | 1,626 tok |
| theagenttimes/agent-news The best news MCP server — 150+ verified articles/day with confidence scores, Ed25519 pro | 38 | Codex, OpenCode | 1 | 424 tok |
| LeeYudok/agents-scaffold leeyudok.github.io Fork-and-fill bootstrap for AI coding agents (Claude Code first, Codex/Gemini via AGENTS.m | 38 | Claude Code, Codex, OpenCode | 7 | 2,772 tok |
| odds-api/odds-api odds-api.net OpenAPI sports betting odds API for coding agents with REST examples, SDKs, MCP, mock mode | 38 | Codex, OpenCode | 1 | 863 tok |
| harness/harness-evals Harness Evals | 38 | Claude Code, Codex, OpenCode | 2 | 8,084 tok |
| Kokxi/qa-test-skills A software testing skill set with 48 expert-level testing skills and one entry workflow, c | 38 | Claude Code, Codex, OpenCode | 2 | 2,595 tok |
| shuangji66/fluxor A mihomo control panel for Linux | 38 | Codex, OpenCode | 1 | 30,154 tok |
| Navyum/chrome-extension-yuque yuque.toolab.top Batch export Yuque documents to local storage. What you see is what you can download. Supp | 38 | Claude Code, Codex, OpenCode | 2 | 3,561 tok |
| ultralytics/lite A fast, local workspace for Claude Code, Codex, Gemini CLI, Kimi Code, Qwen Code, DeepSeek | 38 | Claude Code, Codex, OpenCode | 2 | 1,820 tok |
| slopus/happy-agent happy.engineering Universal Agent Harness from Happy that works with any subscription | 38 | Claude Code, Codex, OpenCode | 3 | 6,673 tok |
| ymm-oss/fsl AI-Native Formal Specification Language — a bounded model checker (Lark + Z3) built for LL | 38 | Claude Code, Codex, OpenCode | 18 | 2,301 tok |
| 17380936778/omp-web Web UI for Oh My Pi (omp) coding agent | Web visual interface for the Oh My Pi coding agen | 38 | Codex, OpenCode | 1 | 3,653 tok |
| ultralytics/skills ultralytics.com Agent skills for Ultralytics YOLO, covering models, datasets, training, tuning, inference, | 38 | Codex, OpenCode | 1 | 1,943 tok |
| MetaMask/metamask-design-system metamask.github.io The design system for MetaMask products | 38 | Claude Code, Codex, Cursor, OpenCode | 3 | 1,983 tok |
| alicankiraz1/SentinelXPrime Stage-aware security skills for Codex, Claude Code, and OpenCode, with explicit compatibil | 38 | Codex, OpenCode | 1 | 353 tok |
| dunecity-project/dunecity dunecity-project.github.io DuneCity — Dune Legacy RTS + Micropolis city-building simulation | 38 | Claude Code, Codex, Cursor, OpenCode | 3 | 9,619 tok |
| Xquik-dev/hermes-tweet docs.xquik.com Hermes Twitter plugin for Hermes Agent, a Twitter bot for monitors, automation & search. N | 37 | Codex, OpenCode | 1 | 787 tok |
| vectimus/vectimus vectimus.com Deterministic governance for AI coding agents. Cedar-based policy engine that intercepts e | 37 | Codex, OpenCode | 1 | 2,214 tok |
| MicSm/boffin Staff-engineer layer for AI coding agents: routes per-edit architectural constraints and r | 37 | Claude Code, Codex, GitHub Copilot, OpenCode | 3 | 7,626 tok |
| Aboudjem/ERC-3643 ERC-3643 - Raptor Version is a simple, educational look at the T-REX standard. Using Solid | 37 | Claude Code, Codex, GitHub Copilot, Cursor, OpenCode | 4 | 2,713 tok |
| SamFold/Mcp.Net A fully featured C# implementation of Anthropic's Model Context Protocol (MCP) | 37 | Codex, OpenCode | 1 | 1,417 tok |
| VioletCranberry/coco-search Local-first hybrid semantic code search tool. Indexes codebases into PostgreSQL with pgvec | 37 | Claude Code, Codex, OpenCode | 2 | 8,368 tok |
| smucclaw/l4-ide This project is being continued by Legalese: | 37 | Claude Code, Codex, OpenCode | 2 | 1,552 tok |
| MiguelAxcar/ai-rpi-protocol Repo-native protocol for AI-assisted coding that enforces a simple discipline: research fi | 37 | Claude Code, Codex, OpenCode | 2 | 1,993 tok |
| memgrafter/flatmachines Orchestrate agents with a peer network of state machines. Supports checkpoint/restore, per | 37 | Claude Code, Codex, OpenCode | 2 | 2,188 tok |
| TheGreenCedar/CodeStory CodeStory is a codebase grounding engine that preindexes code into a knowledge graph and e | 37 | Codex, GitHub Copilot, OpenCode | 2 | 5,313 tok |
| PSPDFKit-labs/nutrient-dws-client-typescript nutrient.io This library provides a type-safe and ergonomic interface for document processing operatio | 37 | Claude Code, Codex, OpenCode | 2 | 522 tok |
| learnwithparam/ai-agentic-patterns learnwithparam.com Hands-on AI agentic patterns workshop material for building real AI and web apps. | 37 | Claude Code, Codex, OpenCode | 2 | 289 tok |
| stablekernel/protoc-gen-go-mcp A protoc plugin for generating mcp servers in golang from a protocol buffer specification | 37 | Codex, OpenCode | 1 | 715 tok |
| liuyingxuvka/Khaos-Brain A local predictive experience layer where AI agents turn repeated work into inspectable mo | 37 | Codex, OpenCode | 9 | 4,956 tok |
| jpablo/metals-standalone-client Minimal Metals stand alone client that allows running the metals mcp server | 37 | Claude Code, Codex, OpenCode | 2 | 1,026 tok |
| webrenew/memories memories.sh | 37 | Claude Code, Codex, OpenCode | 2 | 460 tok |
| mifunedev/openharness oh.mifune.dev 🏗️ Run coding agents in a sandbox, not on your machine. | 37 | Claude Code, Codex, OpenCode | 6 | 2,015 tok |
| collibra/chip Collibra Model Context Protocol (MCP) Server | 37 | Codex, OpenCode | 1 | 1,367 tok |
| FutureRootsDE/legal-audit-de Claude Code plugin for German/EU legal audits (DSGVO, TDDDG, UWG, AI Act, etc.). Not legal | 37 | Claude Code, Codex, GitHub Copilot, OpenCode | 4 | 7,274 tok |
| fayzan123/claude-workflow-composer Visual desktop app for composing multi-agent coding workflows. Drag agents, attach skill | 37 | Claude Code, Codex, OpenCode | 2 | 4,866 tok |
| s2-streamstore/s2-sdk-typescript s2.dev TypeScript SDK for S2, the durable streams API | 37 | Codex, OpenCode | 1 | 246 tok |
| nirholas/defi-agents sperax.click DeFi agent definitions JSON API + MCP - Production-ready agents for Web3, crypto trading, | 37 | Claude Code, Codex, GitHub Copilot, Gemini CLI, OpenCode | 4 | 708 tok |
| Litenova-Solutions/Fuse fuse.codes Faster .NET build and test loop for AI coding agents. | 37 | Claude Code, Codex, OpenCode | 2 | 2,049 tok |
| ismailsaoulaj/reddit-mcp-server A production-grade Model Context Protocol (MCP) server. Empowers AI assistants (Claude, Cu | 37 | Codex, OpenCode | 1 | 675 tok |
| frmoretto/clarity-gate clarity-gate.org Stop LLMs from hallucinating your guesses as facts. Clarity Gate is a verification protoco | 37 | Claude Code, Codex, OpenCode | 2 | 1,163 tok |
| geekatron/jerry jerry.geekatron.org A Claude Code plugin for behavior and workflow guardrails with knowledge accrual | 37 | Claude Code, Codex, OpenCode | 3 | 10,984 tok |
| sergenes/mini_agent A minimal AI agent built from scratch — no agent framework, just Python, the OpenAI SDK, a | 37 | Claude Code, Codex, Gemini CLI, OpenCode | 6 | 522 tok |
| rapid7/rapid7-bulk-export-mcp Rapid7 Bulk Export MCP - AI-powered analysis for Rapid7 Command Platform data using MCP (M | 37 | Codex, Kiro, OpenCode | 4 | 4,303 tok |
| electrikhq/slate slate.electrik.dev Slate - a Laravel Blade UI Kit is a set of anonymous blade components built using Tailwind | 37 | Codex, OpenCode | 1 | 486 tok |
| CrowdStrike/foundry-skills crowdstrike.com AI coding assistant skills for building CrowdStrike Falcon Foundry apps: scaffolding, depl | 37 | Claude Code, Codex, GitHub Copilot, Cursor, OpenCode | 4 | 3,265 tok |
| stasstepv/hermes-pwa Unofficial mobile PWA for Hermes Agent — installs as a plugin in your Hermes Dashboard (we | 37 | Codex, OpenCode | 1 | 1,326 tok |
| avala-ai/agent-code avala-ai.github.io An AI-powered coding agent for the terminal, written in pure Rust | 37 | Codex, OpenCode | 1 | 2,846 tok |