3,528 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 agents7,473Claude Code6,589Data and AI3,693Backend and APIs3,491Languages3,403Planning3,201Git and workflow3,131Code review2,731Memory and context2,354Testing2,335DevOps and cloud2,298Research2,288Writing and docs2,284Frontend2,242Security1,995Productivity1,703
All Claude Code32,066 Codex23,211 OpenCode21,984 GitHub Copilot3,528 Gemini CLI1,908 Cursor1,730 Windsurf104 Kiro70
| Project | Stars | Configures | Files | Always loaded |
|---|---|---|---|---|
| CrowdStrike/fusion-skills crowdstrike.com AI coding assistant skills for building CrowdStrike Falcon Fusion workflows: action discov | 14 | Claude Code, Codex, GitHub Copilot, Gemini CLI, OpenCode | 4 | 3,083 tok |
| Cynrath/agent-context-kit cynrath.github.io Offline-first toolkit for agent-ready repositories: readiness scoring, instruction graphs, | 14 | Claude Code, Codex, GitHub Copilot, Gemini CLI, OpenCode | 4 | 4,051 tok |
| sbroenne/skillpm skillpm.dev Package manager for Agent Skills. Built on npm. | 14 | GitHub Copilot | 1 | 1,296 tok |
| WFord26/BetTrack FastMCP server providing sports betting odds and ESPN data to Claude Desktop. Features pla | 14 | Claude Code, GitHub Copilot | 4 | 8,113 tok |
| joslat/maf-doctor AI-powered toolkit for Microsoft Agent Framework (MAF) migrations — agents, skills, MCP se | 14 | Codex, GitHub Copilot, OpenCode | 5 | 7,516 tok |
| gamedevpl/www.gamedev.pl gamedev.pl Point Claude Code, Cursor, or any MCP-capable agent at this server and it builds a real, p | 14 | Claude Code, Codex, GitHub Copilot, Cursor, OpenCode | 12 | 5,111 tok |
| TsuyoshiUshio/buka-samples Sample Project for the buka project | 14 | Claude Code, Codex, GitHub Copilot, OpenCode | 6 | 2,584 tok |
| Hackbyrd/orbital-express A better way to organize and develop on your Express.js Node.js application. Built for dev | 14 | Claude Code, Codex, GitHub Copilot, OpenCode | 24 | 3,514 tok |
| jonathanbossenger/wordpress-plugin-copilot-instructions WordPress Plugin GitHub Copilot Instructions | 14 | GitHub Copilot | 1 | 2,356 tok |
| zbowling/mcpcodeserver A Model Context Protocol (MCP) proxy server that translates tool calls into TypeScript cod | 14 | Claude Code, Codex, GitHub Copilot, Cursor, OpenCode | 4 | 6,814 tok |
| DanWahlin/marvel-mcp | 14 | GitHub Copilot | 1 | 838 tok |
| Azure-Samples/APIM-Unified-AI-Gateway-Sample | 14 | GitHub Copilot | 4 | 7,459 tok |
| ashlesh-t/cognirepo ashlesh-t.github.io Local cognitive infrastructure for AI coding agents — semantic memory, repository intellig | 14 | Claude Code, GitHub Copilot | 2 | 3,047 tok |
| rachmataditiya/odoo-rust-mcp Odoo MCP Server - Model Context Protocol server for Odoo ERP integration. Supports Odoo 14 | 14 | GitHub Copilot | 1 | 2,780 tok |
| raydeStar/sir-thaddeus Private, local-first AI assistant for Windows with permissioned tools, durable memory, and | 14 | Codex, GitHub Copilot, OpenCode | 6 | 13,425 tok |
| BnJam/stac-mcp An MCP Server for STAC requests | 14 | Codex, GitHub Copilot, OpenCode | 2 | 5,711 tok |
| reactiveui/Primitives A compact, high-performance reactive library for .NET applications | 14 | Claude Code, Codex, GitHub Copilot, OpenCode | 3 | 1,755 tok |
| devjefferson/synapos | 14 | Claude Code, Codex, GitHub Copilot, OpenCode | 12 | 1,610 tok |
| izaac/nixos-config Izaac Reproducible Configuration | 14 | Claude Code, Codex, GitHub Copilot, Gemini CLI, OpenCode | 4 | 1,156 tok |
| takehaya/Vinbero A complete subset of SRv6 local function & transit written in XDP and TC | 14 | GitHub Copilot | 1 | 218 tok |
| Emily2040/rapid-domain-mastery A universal Agent Skill for deep, multi-source learning across 18+ AI coding agents | 13 | Claude Code, Codex, GitHub Copilot, Gemini CLI, OpenCode | 5 | 872 tok |
| CrestApps/CrestApps.AgentSkills crestapps.com Shared AI agent skills and MCP tooling for .NET applications and Orchard Core based projec | 13 | Claude Code, Codex, GitHub Copilot, OpenCode | 3 | 3,728 tok |
| Smithbox-ai/ControlFlow Multi-agent orchestration for VS Code Copilot, Claude Code, OpenAI Codex and Cursor | 13 | Claude Code, GitHub Copilot | 3 | 2,885 tok |
| elbruno/mcpapp-colorpicker A Model Context Protocol (MCP) App built with .NET that provides an interactive color pick | 13 | Claude Code, GitHub Copilot | 3 | 87 tok |
| Bpolat0/atlasmemory npmjs.com Proof-backed, drift-resistant AI memory for your codebase. 11 languages, 28 MCP tools, evi | 13 | Claude Code, GitHub Copilot | 2 | 4,425 tok |
| Angular-Material-Dev/angular-material-ai-rules ui.angular-material.dev This repo contains rules, instructions and guidelines for various AI based code editors to | 13 | GitHub Copilot | 1 | 1,853 tok |
| isndev/qb-linq Lazy Enumerable-style LINQ pipelines for C++17: where, select, order_by, group_by, joins, | 13 | Codex, GitHub Copilot, Cursor, OpenCode | 3 | 1,389 tok |
| iloveitaly/llm-ide-rules Centralized LLM prompt instructions for Copilot and Cursor, including scripts to convert a | 13 | Claude Code, Codex, GitHub Copilot, OpenCode | 15 | 14,634 tok |
| ArtemisAI/Harness_Engineering A template project for harness engineering and grounding long running agentic AI coding sw | 13 | Claude Code, Codex, GitHub Copilot, OpenCode | 8 | 6,305 tok |
| initialneil/project-with-reflect Claude Code meta-skill: turn each project/machine/device into a self-improving skill (log | 13 | Claude Code, Codex, GitHub Copilot, OpenCode | 4 | 508 tok |
| austenstone/myinstants-mcp myinstants.com MCP server that lets your ai agent press sound buttons. it's not that deep. | 13 | GitHub Copilot | 1 | 1,027 tok |
| ChuckBryan/ynabmcpserver | 13 | GitHub Copilot | 1 | 291 tok |
| dickiedyce/Obsidian-TS-MCP Deprecated -- superseded by https://github.com/dickiedyce/devjournal | 13 | GitHub Copilot | 1 | 481 tok |
| php-opcua/opcua-client php-opcua.com A PHP library that talks OPC UA binary protocol over TCP. It handles the full stack — tran | 13 | Claude Code, Codex, GitHub Copilot | 2 | 710 tok |
| smykla-skalski/klaudiush A validation dispatcher for Claude Code hooks that enforces git workflow standards, commit | 13 | Claude Code, Codex, GitHub Copilot, OpenCode | 3 | 7,199 tok |
| EnventDigital/community-express-dev-mcp edgidesign.com A community-built MCP server that provides developer tools for building Adobe Express add- | 13 | GitHub Copilot | 1 | 44 tok |
| Guing/xhs-downloader-skill A Xiaohongshu (Xiaohongshu/Red) content download Skill supporting multiple AI coding assis | 13 | GitHub Copilot | 1 | 1,051 tok |
| zhendalf/claude-mcp An MCP server that allows AI tools to interact with Claude Code programmatically with sess | 13 | Claude Code, GitHub Copilot | 2 | 1,939 tok |
| phenixphp/framework phenixphp.com Phenix framework core | 13 | GitHub Copilot | 2 | 1,472 tok |
| ahmadulhoq/agentskel The skeleton for agentic development — persistent memory, shared standards, and structured | 13 | Claude Code, Codex, GitHub Copilot, Gemini CLI, OpenCode | 7 | 5,625 tok |
| sidprasad/spytial Spytial: Lightweight Diagrams for Structured Python Data | 13 | GitHub Copilot | 1 | 1,940 tok |
| prolific-oss/cli 🔬 A CLI for managing and automating workflows on the Prolific platform | 13 | Claude Code, Codex, GitHub Copilot, OpenCode | 6 | 3,488 tok |
| Badminton-Apps/badman badman.app Codebase for Badman | 13 | Claude Code, Codex, GitHub Copilot, OpenCode | 48 | 7,980 tok |
| vorcyc/Vorcyc.Mathematics A high performance , navie managed code math library. | 13 | GitHub Copilot | 1 | 29 tok |
| abicheck/abicheck abicheck.github.io API/ABI checker: castxml-based header dumper + Python checker + LLVM/GCC support | 12 | Claude Code, Codex, GitHub Copilot, OpenCode | 5 | 24,105 tok |
| sintaxasn/Fluence.Wpf Fluence.Wpf is a modern theming and control library based on WinUI 3, but for WPF on .NET | 12 | Claude Code, Codex, GitHub Copilot, OpenCode | 12 | 15,068 tok |
| zircote/rust-lsp Claude Code plugin for Rust development with rust-analyzer, clippy, rustfmt, and cargo-aud | 12 | Claude Code, GitHub Copilot | 2 | 778 tok |
| h315uk3/symbiosis Claude Code plugins: your extended memory + your thinking partner. Information theory & co | 12 | Claude Code, GitHub Copilot | 7 | 2,434 tok |
| zircote/lsp-tools LSP-first code intelligence for Claude Code with strong enforcement patterns. Part of the | 12 | Claude Code, GitHub Copilot | 2 | 574 tok |
| alexey-pelykh/lhremote lhremote.org CLI and MCP server for LinkedHelper automation — let AI assistants control LinkedIn outrea | 12 | Claude Code, GitHub Copilot | 3 | 6,838 tok |