3,543 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 agents7,521Claude Code6,606Data and AI3,688Backend and APIs3,494Languages3,401Planning3,209Git and workflow3,151Code review2,736Memory and context2,361Testing2,351DevOps and cloud2,300Writing and docs2,296Research2,295Frontend2,250Security2,004Productivity1,709
All Claude Code32,116 Codex23,280 OpenCode22,053 GitHub Copilot3,543 Gemini CLI1,915 Cursor1,736 Windsurf119 Kiro77
| Project | Stars | Configures | Files | Always loaded |
|---|---|---|---|---|
| biggora/claude-plugins-registry CLI marketplace for discovering, installing, and managing Claude Code plugins. | 2 | Codex, GitHub Copilot, OpenCode | 2 | 799 tok |
| Nlai741533/EFC-Plugin Fact-check AI-generated research reports — CLI, Claude Code plugin, GitHub Action | 2 | Claude Code, GitHub Copilot | 1 | 414 tok |
| ukinora/ulanzi-studio-plugin-skill Claude Code skill for building Ulanzi Studio plugins (D200H/D200/D200X) | 2 | GitHub Copilot, Cursor | 2 | 9,234 tok |
| Kenmege/codex-claude-companion Codex-native Claude review plugin for read-only, evidence-cited Opus review lanes. | 2 | GitHub Copilot | 1 | 186 tok |
| observability-oss/progress-observability-plugin Six Claude Code / Copilot skills for the Progress Observability Platform: trace triage, co | 2 | GitHub Copilot | 1 | 10,705 tok |
| vhcg77/github-copilot-instructions Advanced hierarchical instruction system for GitHub Copilot - 100% validated for Data Scie | 2 | GitHub Copilot | 1 | 4,815 tok |
| ThiagoGuislotti/copilot-instructions Curated collection of GitHub Copilot instructions, templates, and best practices for consi | 2 | Claude Code, Codex, GitHub Copilot | 50 | 67,775 tok |
| NKFahrni/github-copilot-instructions these are my custom github copilot instructions i use for my Development workflow with Git | 2 | GitHub Copilot | 6 | 5,568 tok |
| navikt/hovmester Copilot customization files (agents, skills, instructions) distributed via reusable GitHub | 2 | Claude Code, Codex, GitHub Copilot | 49 | 6,842 tok |
| suuus/ape-context Enterprise context setup wizard for GitHub Copilot — scans your project, discovers MCP ser | 2 | Claude Code, GitHub Copilot | 14 | 1,162 tok |
| jfjordanfarr/copilot-self-improvement A radically simple VS Code extension and MCP tool which provides Github Copilot with the r | 2 | GitHub Copilot | 1 | 1,628 tok |
| bitia-srl/bitia-vs-code-copilot-examples AI generated hands-on examples and exercises for learning GitHub Copilot customization in | 2 | GitHub Copilot | 5 | 512 tok |
| selfagency/teamdynamix-mcp teamdynamix-mcp.self.agency 🎟️ TeamDynamix MCP Server (unofficial) | 2 | Claude Code, Codex, GitHub Copilot | 3 | 1,307 tok |
| nahtheking/semantic-model-mcp | 2 | GitHub Copilot | 1 | 127 tok |
| 108yen/task-orchestrator-mcp An MCP (Model Context Protocol) server for task orchestration. | 2 | GitHub Copilot | 1 | 1,126 tok |
| joelmnz/mcp-markdown-manager Manage a Markdown knowledge library with AI MCP API | 2 | Claude Code, Codex, GitHub Copilot, OpenCode | 5 | 1,676 tok |
| karnagge/mcpcand | 2 | GitHub Copilot | 1 | 1,216 tok |
| tiemenrtuinstra/baarn-raadsinformatie MCP Server voor politieke documenten gemeente Baarn via Notubiz API | 2 | GitHub Copilot | 1 | 779 tok |
| lenvolk/mcp-lifx | 2 | Claude Code, Codex, GitHub Copilot | 3 | 833 tok |
| javiarmesto/Lab3_1_MCP_BusinessCentral | 2 | GitHub Copilot | 1 | 357 tok |
| axelspringer/snyk-mcp-rest MCP for Snyk REST API | 2 | GitHub Copilot | 1 | 1,859 tok |
| not-a-feature/evo2-mcp evo2-mcp.readthedocs.io MCP server for generating, scoring and embedding genomic sequences using Evo 2 | 2 | GitHub Copilot | 1 | 230 tok |
| kieutrongthien/coding-mcp coding-mcp.omaicode.com Coding MCP is a multi-project MCP server for remote coding workflows. It lets agents work | 2 | Claude Code, Codex, GitHub Copilot | 4 | 320 tok |
| sandraschi/opencode-cli-mcp MCP server that wraps opencode CLI's HTTP API (opencode serve) into MCP tools, plus a weba | 2 | Claude Code, Codex, GitHub Copilot, Cursor, OpenCode, Windsurf | 6 | 1,891 tok |
| gusztavvargadr/foaas-mcp foaas.io MCP server to expose the functionality of FOAAS (Fuck Off As A Service) to AI clients | 2 | GitHub Copilot | 1 | 2,118 tok |
| theobjectivedad/powersearch-mcp PowerSearch MCP helps AI agents search and retrieve content from the public web with fewer | 2 | Codex, GitHub Copilot, OpenCode | 2 | 1,562 tok |
| surajfale/git-mcp-server | 2 | GitHub Copilot | 1 | 1,125 tok |
| l0kifs/web-explorer-mcp | 2 | GitHub Copilot | 1 | 1,842 tok |
| mnooseman/mcsrc-mcp | 2 | Claude Code, GitHub Copilot | 2 | 1,760 tok |
| dave-palt/mcp-dynamics-365 | 2 | GitHub Copilot | 1 | 2,528 tok |
| getlien/lien lien.dev Local-first semantic code search for AI coding assistants. Indexes your codebase with loca | 2 | Claude Code, Codex, GitHub Copilot, OpenCode | 9 | 7,645 tok |
| asvarnon/mcp-homelab | 2 | Claude Code, GitHub Copilot | 7 | 1,586 tok |
| l4b4r4b4b4/real-estate-sustainability-mcp MCP server for analyzing building sustainability metrics through Excel, PDF, and standardi | 2 | GitHub Copilot | 1 | 709 tok |
| zk-armor/mcp-sphinx-docs MCP server to convert Sphinx documentation to LLM-optimized Markdown | 2 | GitHub Copilot | 1 | 340 tok |
| qd313/decky-plugin-studio VS Code / Cursor extension for Decky plugin development — live QAM preview, MCP tools for | 2 | Claude Code, Codex, GitHub Copilot, OpenCode | 3 | 2,212 tok |
| densuke/fuga-memory Long-term memory MCP server for Claude Code and other LLMs | 2 | Claude Code, Codex, GitHub Copilot, Gemini CLI, OpenCode | 4 | 1,720 tok |
| 0xEkho/Ruckus-vSZ-MCP RUCKUS vSZ MCP | 2 | Claude Code, Codex, GitHub Copilot, OpenCode | 6 | 2,782 tok |
| amanasmuei/amem npmjs.com The memory layer for AI coding tools. Local-first, semantic, works with Claude Code, Curso | 2 | Claude Code, GitHub Copilot | 2 | 2,416 tok |
| DimitrK/mcp-search | 2 | GitHub Copilot | 1 | 3,592 tok |
| sushilti80/datadog-mcp Model Context Protocol (MCP) server that provides AI agents with seamless access to Datado | 2 | Codex, GitHub Copilot, OpenCode | 2 | 8,835 tok |
| janainarocha/testrail-mcp-server A comprehensive Model Context Protocol (MCP) server that enables AI assistants to interact | 2 | GitHub Copilot | 1 | 324 tok |
| bradygaster/UsingMcpServers | 2 | GitHub Copilot | 1 | 87 tok |
| muah1987/Ollama-MCP-Server MCP-Server tools for Ollama | 2 | GitHub Copilot | 1 | 2,101 tok |
| tanihiroki/speech_mcp_server | 2 | GitHub Copilot | 1 | 423 tok |
| michalisKout/diavgeia-mcp-server | 2 | GitHub Copilot | 1 | 340 tok |
| XTeam-Wing/Marshal-MCP Mcp services by marshal | 2 | GitHub Copilot | 1 | 44 tok |
| boecht/birre BiRRe (Bitsight Rating Retriever) MCP server provides access to BitSight security rating d | 2 | Claude Code, Codex, GitHub Copilot, OpenCode | 11 | 3,670 tok |
| SaViGnAnO/vscode-simple-browser-mcp MCP Server for interaction with VSCode Simple Browser window | 2 | GitHub Copilot | 1 | 398 tok |
| GaryWenneker/SitecoreMCP A Model Context Protocol (MCP) server that integrates Sitecore CMS with AI assistants like | 2 | GitHub Copilot | 1 | 8,943 tok |
| andnp/ragdocs-mcp | 2 | Claude Code, Codex, GitHub Copilot, OpenCode | 4 | 3,711 tok |