43,652 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 agents7,588Claude Code6,636Data and AI3,676Backend and APIs3,496Languages3,402Planning3,219Git and workflow3,187Code review2,745Testing2,374Memory and context2,364DevOps and cloud2,310Writing and docs2,309Research2,295Frontend2,261Security2,021Productivity1,715
All Claude Code31,998 Codex23,222 OpenCode22,170 GitHub Copilot3,550 Gemini CLI1,918 Cursor1,738 Windsurf137 Kiro80
| Project | Stars | Configures | Files | Always loaded |
|---|---|---|---|---|
| vishnu2kmohan/mcp-server-langgraph mcp-server-langgraph.mintlify.app Agent Studio with Federated Single Sign-On and Fine-Grained Access Controls | 4 | Claude Code, GitHub Copilot, Cursor | 48 | 4,381 tok |
| UltimaPhoenix/dev-coach ultimaphoenix.github.io Stay sharp while your AI does the work — local MCP coach that teaches one concept per task | 4 | Claude Code | 1 | 6,404 tok |
| aplaceforallmystuff/mcp-kit An MCP (Model Context Protocol) server that connects AI assistants like Claude to the [Kit | 4 | Claude Code | 1 | 644 tok |
| TristanLib/mcp_server_mysql_windows | 4 | Cursor | 1 | 181 tok |
| resolve-ai-oss/resolve-ai-plugins | 4 | Claude Code, Codex, OpenCode | 2 | 1,014 tok |
| vishalsachdev/claude-code-skills Professional skills for Claude Code following the Agent Skills open specification | 4 | Codex, OpenCode | 1 | 471 tok |
| donnfelker/donnfelker-plugin-marketplace | 4 | Claude Code, Codex, OpenCode | 2 | 2,124 tok |
| identimoji/mcp-server-emojikey MCP Server for emojikey.io ... save your unique relationship state and interaction style w | 4 | Claude Code | 1 | 260 tok |
| frontsail-ai/aspicio aspicio.frontsail.app DXF and vector-PDF viewer for the web and AI agents — TypeScript parse→tessellate→render e | 4 | Claude Code, Codex, OpenCode | 2 | 2,867 tok |
| jayozer/outscraper-mcp model context protocol for outscraper | 4 | Claude Code | 1 | 546 tok |
| ragingwind/web-llm-mcp-server MCP Server for web-llm | 4 | Claude Code | 1 | 847 tok |
| nickytonline/pimp-my-ride-mcp An MCP server that allows you to configure a car | 4 | Claude Code, Codex, GitHub Copilot, Cursor, OpenCode | 4 | 3,846 tok |
| maricoxu/remote-terminal-mcp | 4 | Cursor | 1 | 1,306 tok |
| ythalorossy/openfda | 4 | Claude Code, Codex, OpenCode | 2 | 2,128 tok |
| julianoczkowski/mcp-modus This MCP server gives AI assistants (like Cursor, Claude, VS Code) access to complete Modu | 4 | Claude Code | 1 | 1,467 tok |
| dgalarza/ynab-mcp-dgalarza MCP server for working with your YNAB budget | 4 | Claude Code | 1 | — |
| sophia-labs/mnemosyne-mcp MCP for Sophia knowledge platform (Mnemosyne). Interfaces with RDF graphs and Garden front | 4 | Claude Code | 1 | — |
| mbk-dev/okama-mcp MCP server providing investment analysis tools backed by the okama Python library | 4 | Claude Code, Codex, OpenCode | 5 | 1,868 tok |
| johnnyzhoujz/pin-it-public justpinit.xyz A local Mac pinboard for saving anything you want to reuse with any AI. | 4 | Claude Code, Codex, OpenCode | 2 | 510 tok |
| espresso3389/pdf-splitter-mcp MCP server to handle PDF files efficiently | 4 | Claude Code | 1 | 1,432 tok |
| nav33n25/IMCP Welcome to IMCP – a deliberately vulnerable framework that exposes 14 critical security we | 4 | GitHub Copilot | 1 | 286 tok |
| foundry-works/foundry-mcp foundry-mcp | 4 | Claude Code, Codex, OpenCode | 2 | 4,413 tok |
| kvas-it/mcp-server-fs MCP server providing basic file system operations. Supports navigation, reading, writing, | 4 | Claude Code | 1 | 369 tok |
| EoinFalconer/granola-mcp-server | 4 | Codex, OpenCode | 1 | 1,465 tok |
| jweingardt12/BaseClaw jweingardt12.github.io Win your fantasy league, with the help of AI. Allows for Claude/OpenClaw management of you | 4 | Claude Code, Codex, OpenCode | 2 | 4,647 tok |
| manojbajaj95/agent-knowledge-cards Filesystem-first knowledge cards for coding agents; durable facts as trusted memory. Save | 4 | Codex, OpenCode | 1 | 879 tok |
| aws-samples/sample-laboratory-data-transformation-mcp | 4 | Claude Code, Codex | 1 | — |
| ngmeyer/skills Agent skills I use every day — small, composable, model-agnostic. (private; scrub pending | 4 | Claude Code | 1 | 938 tok |
| masx200/persistent-terminal-mcp https://github.com/sanshao85/persistent-terminal-mcp | 4 | Claude Code | 1 | 1,910 tok |
| marcusquinn/quickfile-mcp MCP server for QuickFile UK accounting software - invoices, clients, purchases, banking, a | 4 | Claude Code, Codex, GitHub Copilot, Cursor, OpenCode, Windsurf | 6 | 706 tok |
| OwenQian/mcp-server-manager | 4 | Claude Code | 1 | 601 tok |
| nuxeo/nuxeo-mcp-server Nuxeo MCP Server | 4 | Codex, OpenCode | 1 | 3,817 tok |
| funtusov/mcp-server-architect | 4 | Claude Code | 1 | 848 tok |
| prikotov/moex-mcp-server | 4 | Codex, OpenCode | 1 | 346 tok |
| toyamagu-2021/argocd-mcp-server ArgoCD MCP Server | 4 | Claude Code | 2 | 1,795 tok |
| arkhangelsk/mcp-appium-server Mobile Automation Using Appium MCP Server | 4 | GitHub Copilot | 1 | 973 tok |
| ajentik/ruby_mcp_server Configurable Rack MCP Server App | 4 | Claude Code | 1 | 484 tok |
| ratatatat1/pingcode-mcp | 4 | Claude Code | 1 | 820 tok |
| p-meier/northdata-connectors Generic NorthData API wrapper: Python CLI, MCP server, and Claude Skill. | 4 | Claude Code | 1 | 1,368 tok |
| darknodebros/EleSync elesync.dev Your AI chats and memories Synced! Claude, ChatGPT, Gemini, Grok, Deepseek and Perplexit | 4 | Claude Code, Codex, GitHub Copilot | 5 | 104 tok |
| AgiMaulana/HuaweiAppGalleryMcp | 4 | Codex, OpenCode | 2 | 581 tok |
| bmdhodl/agent47 agentguard47.com Python runtime checks for AI agents: budgets, loops, retries, and local traces. Zero runti | 4 | Claude Code, Codex, GitHub Copilot, OpenCode | 9 | 6,555 tok |
| cyanheads/hn-mcp-server npmjs.com Browse Hacker News feeds, threads, and user profiles with full-text search via MCP. STDIO | 4 | Claude Code | 1 | 6,380 tok |
| cyanheads/openfda-mcp-server npmjs.com Query FDA data on drugs, food, devices, and recalls via openFDA. STDIO or Streamable HTTP. | 4 | Claude Code, Codex, OpenCode | 2 | 12,346 tok |
| RossH121/perplexity-mcp A Perplexity MCP server based on https://github.com/jaacob/perplexity-mcp which includes a | 4 | Claude Code | 1 | 2,074 tok |
| madebygps/obsidian-diary-mcp MCP server for Obsidian diary management with local AI (Ollama). Generates reflection prom | 4 | GitHub Copilot | 2 | 72 tok |
| AdelElo13/neuromcp npmjs.com Semantic memory for AI agents — local-first MCP server with hybrid search, governance, and | 4 | Claude Code, Codex, OpenCode | 2 | 1,832 tok |
| SajmustafaKe/frappe-dev-mcp-server A Model Context Protocol (MCP) server that provides AI assistance for Frappe/ERPNext devel | 4 | Claude Code | 1 | 975 tok |
| cyanheads/libofcongress-mcp-server npmjs.com Search LOC digital collections, browse Chronicling America newspapers with full OCR text, | 4 | Claude Code, Codex, OpenCode | 2 | 11,494 tok |
| davidmosiah/google-ads-mcp-unofficial npmjs.com Unofficial MCP server for Google Ads — campaign management, keyword/bid optimization, budg | 4 | Codex, OpenCode | 1 | 851 tok |