43,750 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 agents7,690Claude Code6,656Data and AI3,669Backend and APIs3,506Languages3,395Planning3,227Git and workflow3,219Code review2,753Testing2,387Memory and context2,368Writing and docs2,331DevOps and cloud2,317Research2,292Frontend2,266Security2,036Productivity1,725
All Claude Code31,992 Codex23,401 OpenCode22,346 GitHub Copilot3,564 Gemini CLI1,917 Cursor1,741 Windsurf146 Kiro83
| Project | Stars | Configures | Files | Always loaded |
|---|---|---|---|---|
| chrischall/groupon-mcp MCP server + curl skill for Groupon deals — anonymous search, deal detail, and category br | 1 | Claude Code | 1 | 1,553 tok |
| chrischall/ioffice-mcp | 1 | Claude Code | 1 | 2,152 tok |
| chrischall/resy-mcp | 1 | Claude Code, Codex, OpenCode | 2 | 7,837 tok |
| chrischall/viator-mcp MCP server for the Viator Partner API — search tours and activities, availability, attract | 1 | Claude Code | 1 | 1,394 tok |
| crunchtools/mcp-wordpress Secure MCP server for WordPress content management | 1 | Claude Code | 1 | 888 tok |
| cyanheads/exchange-rates-mcp-server npmjs.com Convert currencies, get FX rates, and query historical ECB exchange rate data via MCP. STD | 1 | Claude Code, Codex, OpenCode | 2 | 15,502 tok |
| cyanheads/college-scorecard-mcp-server npmjs.com Search, compare, and analyze U.S. college data — costs, earnings, programs, and outcomes — | 1 | Claude Code | 1 | 5,995 tok |
| cyanheads/evals-mcp-server Author verifiable eval records through a draft → review → revise → submit loop with server | 1 | Claude Code, Codex, OpenCode | 2 | 12,314 tok |
| cyanheads/gbif-biodiversity-mcp-server npmjs.com Search GBIF species taxonomy, occurrence records, datasets, and publishers via MCP. STDIO | 1 | Claude Code, Codex, OpenCode | 2 | 14,134 tok |
| cyanheads/anime-mcp-server npmjs.com Search anime/manga, get full detail, franchise watch order, seasonal schedule, characters, | 1 | Claude Code, Codex, OpenCode | 2 | 11,974 tok |
| cyanheads/calculator-mcp-server npmjs.com Evaluate, simplify, and differentiate mathematical expressions via MCP. STDIO or Streamabl | 1 | Claude Code, Codex, OpenCode | 2 | 13,370 tok |
| cyanheads/coingecko-mcp-server npmjs.com Market data for 15,000+ cryptocurrencies — prices, history, trends, and deep coin metadata | 1 | Claude Code, Codex, OpenCode | 2 | 15,880 tok |
| cyanheads/epa-mcp-server npmjs.com Access EPA environmental data — facility compliance (ECHO), toxic releases (TRI), Superfun | 1 | Claude Code, Codex, OpenCode | 2 | 12,342 tok |
| cyanheads/federal-regulations-mcp-server npmjs.com Search and trace US federal rules across the Federal Register (proposed/final rules and no | 1 | Claude Code, Codex, OpenCode | 2 | 13,088 tok |
| cyanheads/finnhub-mcp-server npmjs.com Real-time US-equity quotes, company fundamentals, earnings, analyst trends, and financial | 1 | Claude Code, Codex, OpenCode | 2 | 13,458 tok |
| cyanheads/gnomad-genetics-mcp-server npmjs.com Ancestry allele frequencies, LoF constraint, variant lists, and coverage from gnomAD, join | 1 | Claude Code, Codex, OpenCode | 2 | 15,000 tok |
| crunchtools/mcp-workboard Secure MCP server for WorkBoard OKR and strategy execution platform | 1 | Claude Code | 1 | 1,038 tok |
| cunicopia-dev/knowledge-graph-rdbms A label property graph in a single SQLite file — event-sourced, gated, and MCP-ready. Agen | 1 | Claude Code | 2 | 3,947 tok |
| tuning-labs-oss/claude-command-center tuninglabs.net Transform Claude Code into an organized command center — session persistence, daily task t | 1 | Claude Code | 1 | 333 tok |
| cyanheads/bls-labor-mcp-server npmjs.com Fetch US Bureau of Labor Statistics data — CPI, unemployment, wages, JOLTS, and more via M | 1 | Claude Code, Codex, OpenCode | 2 | 15,198 tok |
| cyanheads/bluesky-mcp-server npmjs.com Search posts, profiles, feeds, threads, and trending topics on Bluesky via MCP. STDIO or S | 1 | Claude Code, Codex, OpenCode | 2 | 13,756 tok |
| cyanheads/chembl-mcp-server npmjs.com Link compounds to protein targets, rank bioactivity (IC50/Ki/EC50), and look up drug mecha | 1 | Claude Code, Codex, OpenCode | 2 | 16,870 tok |
| cyanheads/congressgov-mcp-server npmjs.com Access U.S. congressional data - bills, votes, members, committees via MCP. STDIO & Stream | 1 | Claude Code, Codex, OpenCode | 2 | 13,162 tok |
| cyanheads/cpsc-recalls-mcp-server npmjs.com Search and retrieve US consumer product recalls from the CPSC (Consumer Product Safety Com | 1 | Claude Code, Codex, OpenCode | 2 | 14,204 tok |
| cyanheads/docgen-mcp-server npmjs.com Render HTML/markdown to PDF, export rows to xlsx, and fill AcroForm PDFs via MCP. STDIO or | 1 | Claude Code, Codex, OpenCode | 2 | 16,092 tok |
| cyanheads/earthquake-mcp-server npmjs.com Search USGS and EMSC seismic data — real-time feeds, event queries, and earthquake counts | 1 | Claude Code, Codex, OpenCode | 2 | 11,584 tok |
| cyanheads/fbi-crime-mcp-server npmjs.com Exposes the FBI Crime Data Explorer API — UCR crime estimates, NIBRS incident breakdowns, | 1 | Claude Code, Codex, OpenCode | 2 | 14,348 tok |
| cyanheads/fcc-broadband-mcp-server npmjs.com Access FCC broadband availability, coverage analysis, and digital divide data for US geogr | 1 | Claude Code, Codex, OpenCode | 2 | 14,504 tok |
| cyanheads/fema-mcp-server npmjs.com Query FEMA disaster declarations, public assistance grants, housing aid, and NFIP flood in | 1 | Claude Code, Codex, OpenCode | 2 | 12,284 tok |
| dfch/biz.dfch.SpecMgr d-fens.ch An artifact manager for system specifications. | 1 | Codex, OpenCode | 7 | 15,776 tok |
| deapi-ai/mcp-server-deapi | 1 | Claude Code | 1 | 1,285 tok |
| dockndevai/mcp-azure-devops dockndevai.github.io MCP server for Azure DevOps — boards, repos, pipelines, projects — with governance control | 1 | Claude Code | 1 | — |
| dockndevai/mcp-azure dockndevai.github.io MCP server for Azure (Resource Manager) — inventory, tags, VM power, lifecycle — with gove | 1 | Claude Code | 1 | — |
| darrenjrobinson/graph-atlas-mcp An MCP server that tracks schema changes across the Microsoft Graph API — both the changes | 1 | Claude Code | 1 | 1,283 tok |
| davidmosiah/delx-memory npmjs.com Local-first persistent memory layer for AI agents. SQLite-backed, MCP-compatible, cross-ag | 1 | Codex, OpenCode | 1 | 416 tok |
| davidmosiah/wellness-cgm-mcp npmjs.com Local-first continuous glucose monitor MCP — Dexcom Developer API, FreeStyle Libre via Lib | 1 | Codex, OpenCode | 1 | 686 tok |
| dazzle-labs/cli | 1 | Claude Code | 2 | 738 tok |
| dinosaur24/mockhero mockhero.dev | 1 | Claude Code, Codex | 2 | 79 tok |
| darylmcd/Roslyn-Backed-MCP | 1 | Claude Code, Codex, GitHub Copilot, OpenCode | 22 | 3,676 tok |
| david-eve-za/nvidia-nim-mcp | 1 | Codex, OpenCode | 1 | 941 tok |
| davidmosiah/short-video-agent-kit npmjs.com Agent-first short-form AI video generation CLI and MCP server for Sora, Veo, xAI and Seeda | 1 | Codex, OpenCode | 1 | 137 tok |
| davidmosiah/tiktok-agent-publisher npmjs.com Agent-first TikTok Content Posting API CLI and MCP server with dry-run publishing | 1 | Codex, OpenCode | 1 | 142 tok |
| davidmosiah/youtube-shorts-agent npmjs.com Agent-first YouTube Shorts upload CLI and MCP server with dry-run API uploads | 1 | Codex, OpenCode | 1 | 139 tok |
| decidefyi/decide decide.fyi Source-backed, fail-closed policy checks for refunds, cancellations, returns, and trials. | 1 | Codex, OpenCode | 1 | 1,180 tok |
| desper/quick-html-sharing qhs.fyi Indie SaaS for vibe coders to instantly share AI-generated HTML pages — unguessable URLs + | 1 | Claude Code, Codex, OpenCode | 2 | 3,608 tok |
| dfieser/hea-bench dfieser.github.io Free high-entropy alloy (HEA) and high-entropy oxide calculator: mixing entropy, atomic-si | 1 | Claude Code, Codex, OpenCode | 2 | 7,698 tok |
| digitalgremlin/hn-developer-sentiment-mcp a deterministic developer-sentiment engine for Hacker News | 1 | Codex, OpenCode | 1 | 6,211 tok |
| ENTIA-IA/entia-mcp-server entia.systems Verified business-identity intelligence for AI agents & MCP clients — company verification | 1 | Codex, OpenCode | 1 | 157 tok |
| echoedinvoker/chatmux Local-first personal chat data layer daemon. Connects IM platforms via child-process adapt | 1 | Claude Code | 1 | 2,037 tok |
| edithatogo/sourceright edithatogo.github.io Reference verification infrastructure for academic and legal citation workflows | 1 | Claude Code, Codex, GitHub Copilot, OpenCode | 3 | 4,909 tok |