43,695 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 agents7,622Claude Code6,647Data and AI3,678Backend and APIs3,504Languages3,404Planning3,218Git and workflow3,203Code review2,744Testing2,378Memory and context2,367Writing and docs2,318DevOps and cloud2,312Research2,291Frontend2,259Security2,027Productivity1,717
All Claude Code32,008 Codex23,279 OpenCode22,224 GitHub Copilot3,555 Gemini CLI1,920 Cursor1,736 Windsurf139 Kiro81
| Project | Stars | Configures | Files | Always loaded |
|---|---|---|---|---|
| ethereumfollowprotocol/google-services-mcp google-services-mcp.efp.workers.dev MCP server for interacting with the google services used by the EFP team | 3 | Claude Code | 3 | — |
| severity1/3commas-mcp An MCP (Model Context Protocol) server that integrates with the 3Commas.io API, enabling a | 3 | Claude Code | 2 | 487 tok |
| amattas/todoist-mcp MCP server for interacting with Todoist task management | 3 | Claude Code | 1 | 2,463 tok |
| UmarHassanKhan929/react-profiler-mcp Bridge React’s Profiler API to Model Context Protocol (MCP): a local companion server + br | 3 | Claude Code, Cursor | 19 | — |
| AiAgentKarl/aviation-mcp-server MCP server for aviation data — Live flight tracking, airport weather, airline info | 3 | Claude Code | 1 | 273 tok |
| gunvertugberk/mcp-sqlserver npmjs.com A powerful MCP server for SQL Server — schema discovery, query execution, DDL, stored proc | 3 | Claude Code | 4 | 1,726 tok |
| dmayan-ss/mcp-ispkeeper Simple MCP server for ISPKeeper | 3 | Claude Code | 1 | 694 tok |
| jvanmelckebeke/mcp-synaptic Memory-enhanced MCP server with local RAG database and expiring memory capabilities | 3 | Claude Code | 1 | 5,659 tok |
| wgarrido/mcp-browser npmjs.com Give your AI a real browser. MCP server that routes web requests through Chrome via CDP. | 3 | Claude Code | 2 | 148 tok |
| knishioka/freee-mcp MCP server for freee accounting API integration | 3 | Claude Code | 1 | 994 tok |
| Juanmidev1/synapse-code-mcp Model Context Protocol server for code intelligence. Lets AI assistants explore your codeb | 3 | Claude Code | 1 | 1,213 tok |
| greenhouselabs/cuescope-mcp greenhouselabs.io CueScope: read-first production intelligence for workflows compatible with vMix | 3 | Claude Code, Codex, OpenCode | 2 | 1,635 tok |
| max1ab/rss-news MCP tool to get NEWS from RSS | 3 | Codex, OpenCode | 1 | 727 tok |
| seandearnaley/mcp-warden-magento-ts | 3 | Claude Code, Codex, OpenCode | 2 | 1,782 tok |
| briandconnelly/codex-in-claude Call OpenAI Codex from Claude Code for delegation, review, and second opinions | 3 | Claude Code, Codex, OpenCode | 9 | 6,489 tok |
| longevitycoach/bloodtest-mcp-server A comprehensive health coaching system that combines blood test analysis with evidence-bas | 3 | Claude Code | 1 | 1,056 tok |
| hcross/videogame-encyclopedia-mcp-server A MCP server dedicated to videogame information and visual assets searching and fetching. | 3 | Codex, OpenCode | 1 | 407 tok |
| johnneerdael/google-mailpilot johnneerdael.github.io A Gmail IMAP/SMTP Client for AI Agents with Calendar Integration | 3 | Codex, OpenCode | 1 | 4,322 tok |
| Smengerl/vw_connect_mcp Make your EV (VW Group and 30+ other brands via Tibber) available to your AI via MCP | 3 | Claude Code, GitHub Copilot | 4 | 6,453 tok |
| encypherai/c2pa-knowledge-graph Generate versioned RDF/OWL knowledge graphs from C2PA specification source files. Serve to | 3 | Claude Code | 1 | — |
| harmonicabot/harmonica-mcp MCP server for Harmonica deliberation sessions — create, query, and analyze sessions from | 3 | Claude Code | 1 | 3,004 tok |
| cal3bdev/omcp Securely connect AI agents to your production data | 3 | Claude Code | 1 | 796 tok |
| HappyMonkeyAI/DynamicMCPProxy A smart MCP proxy server that **lazily loads relevant MCP tool servers based on your proje | 3 | Codex, OpenCode | 1 | 844 tok |
| theagenticguy/opencodehub theagenticguy.github.io Apache-2.0 code intelligence for AI coding agents. Graph-based impact analysis, blast radi | 3 | Claude Code, Codex, OpenCode | 16 | 2,984 tok |
| ashcastelinocs124/master-mcp master-mcp.vercel.app | 3 | Codex, OpenCode | 1 | 1,497 tok |
| CrispyW0nton/Unreal-MCP-Ghost | 3 | Codex, OpenCode | 1 | 195 tok |
| Bluezeamer/PrecisionContextEngine PCE is a codebase analysis MCP tool that uses a wrapper around serena and an agent mechani | 3 | Codex, OpenCode | 1 | 355 tok |
| huckncatch/mailmate-mcp MCP Server for MailMate | 3 | Claude Code | 1 | 808 tok |
| tternquist/marklogic-mcp | 3 | Claude Code | 15 | 4,056 tok |
| labjp-mcp/cncf-tech-advisor-mcp MCP Server for CNCF Technology Advisor - AI-powered cloud native guidance | 3 | Claude Code | 1 | 1,227 tok |
| adrmrn/tidio-mcp MCP server that integrates with the Tidio customer service platform | 3 | Claude Code | 2 | 648 tok |
| scanner/emacs-org-mcp MCP for creating/updating tasks and journal entries kept in emacs org-mode | 3 | Claude Code | 1 | 11,261 tok |
| wangyaominde/mermaid-studio Online Mermaid.js diagram editor with MCP support — Cloudflare Workers | 3 | Claude Code | 1 | 702 tok |
| nerdo/precision-math-mcp MCP server providing precise mathematical computation via math.js | 3 | Claude Code | 1 | 770 tok |
| willorn/mcp-yashan An MCP (Model Context Protocol) server for connecting to YashanDB, enabling AI assistants | 3 | Codex, OpenCode | 1 | 535 tok |
| jompereira/HacknPlan-MCP | 3 | Claude Code | 1 | 549 tok |
| henrikogaard/infomaniak-mcp A unified Model Context Protocol (MCP) server that gives AI agents full access to your Inf | 3 | Codex, OpenCode | 1 | 1,369 tok |
| divikwu/figcraft AI-driven Figma plugin that follows design specs. MCP bridge between IDE and Figma. | 3 | Claude Code, Codex, OpenCode | 3 | 9,627 tok |
| igrechuhin/Cortex | 3 | Claude Code, Codex, OpenCode | 26 | 6,359 tok |
| Albenzoo/Mockoon-mcp npmjs.com Control Mockoon mocks via natural language using the Model Context Protocol | 3 | Claude Code, Codex, GitHub Copilot | 2 | 2,083 tok |
| superiorsd10/rubberduck-mcp | 3 | Claude Code | 1 | 2,278 tok |
| Ichliebedich1/mimo-bridge-mcp An MCP with an admin dashboard that lets Codex and other Agent tools perform analysis and | 3 | Codex, OpenCode | 1 | 1,008 tok |
| matthewgjohnson/ask-another MCP server for querying other LLMs (OpenAI, Gemini, xAI, Anthropic, Groq) through a unifie | 3 | Claude Code | 1 | 1,552 tok |
| ageugyn/glpi-mcp-server First MCP Server for GLPI ITSM — Connect Claude, ChatGPT and Copilot to your IT operations | 3 | Claude Code, Codex | 1 | — |
| bcharleson/prospeo-cli CLI and MCP server for the Prospeo API — person/company enrichment and search for AI agent | 3 | Claude Code, Codex, OpenCode | 2 | 7,630 tok |
| hadi21k/database-mcp | 3 | Claude Code | 1 | 1,618 tok |
| Stupidoodle/instagram-mcp Instagram DM MCP server - built entirely by Claude (Opus 4.5) in ~3 hours with mass auto-a | 3 | Claude Code | 2 | 678 tok |
| freegyes/project-ContemPlace adamfreisinger.me A modern commonplace book that auto-gardens into an MCP-connected knowledge base. Capture | 3 | Claude Code | 10 | 4,140 tok |
| ttpears/mediawiki-mcp | 3 | Claude Code | 1 | 791 tok |
| jgauffin/ts-language-mcp TypeScript MCP Server for Coding agents to reduce token usage and more accurate coding. | 3 | Claude Code | 1 | 24 tok |