How real projects configure their agents

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