23,222 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 |
|---|---|---|---|---|
| cyanheads/calculator-mcp-server npmjs.com Evaluate, simplify, and differentiate mathematical expressions via MCP. STDIO or Streamabl | 1 | Claude Code, Codex, OpenCode | 2 | 12,968 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 | 13,436 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 | 12,072 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 | 11,166 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 | 12,548 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 | 11,150 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 | 11,384 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 | 14,242 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 | 12,388 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 | 11,858 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 | 13,414 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 | 12,054 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 | 11,830 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 | 11,318 tok |
| dfch/biz.dfch.SpecMgr d-fens.ch An artifact manager for system specifications. | 1 | Codex, OpenCode | 5 | 14,795 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 |
| dinosaur24/mockhero mockhero.dev | 1 | Claude Code, Codex | 2 | 79 tok |
| darylmcd/Roslyn-Backed-MCP | 1 | Claude Code, Codex, GitHub Copilot, OpenCode | 23 | 3,413 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 |
| 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 |
| ellmos-ai/ellmos-controlcenter-mcp npmjs.com MCP control plane for local server discovery, profile management, capability bundles, dash | 1 | Claude Code, Codex, OpenCode | 2 | 149 tok |
| edithatogo/healthpoint-rs Rust SDK, CLI, and read-only MCP server for licensed Healthpoint HL7 FHIR API access | 1 | Codex, OpenCode | 1 | 572 tok |
| gblinproject/gblin-treasury-risk-regime gblin.digital Market risk regime (calm/elevated/crash) for AI agents on Base — free to read via MCP. Sig | 1 | Codex, OpenCode | 1 | 1,425 tok |
| gCuadros/hevy-mcp | 1 | Claude Code, Codex, GitHub Copilot, OpenCode | 4 | 5,216 tok |
| mcpindex-ai/mcpindex-web mcpindex.ai The agent-native index of MCP servers — discovery layer over the official MCP registry. | 1 | Claude Code, Codex, OpenCode | 2 | 79 tok |
| fluidumber/AutoPM Turn abstract ideas into shipping roadmaps. AutoPM is an agentic workflow that deploys spe | 1 | Claude Code, Codex, OpenCode | 2 | 7,697 tok |
| gabrielmahia/wapimaji-mcp pypi.org MCP server for Kenya drought and water access — NDMA drought phases, borehole registry, wa | 1 | Codex, OpenCode | 1 | 143 tok |
| gate/gate-local-mcp A local MCP server that exposes the Gate API v4 to any MCP-compatible client | 1 | Claude Code, Codex, OpenCode | 3 | 1,259 tok |
| equilibrium-team/tweekit-mcp | 1 | Codex, OpenCode | 1 | 938 tok |
| eternal-roman/ledger npmjs.com Exact-decimal double-entry kernel for AI agents. Call MCP tools instead of doing money mat | 1 | Claude Code, Codex, GitHub Copilot, OpenCode | 6 | 787 tok |
| ex3lite/mcp_rzd_tickets | 1 | Codex, OpenCode | 1 | 115 tok |
| fantasyce/agent-runtime-proof fantasyce.github.io Local, read-only proof that a live Agent or MCP runtime matches an approved artifact. | 1 | Codex, OpenCode | 1 | 380 tok |
| groupdocs-metadata/GroupDocs.Metadata.Mcp GroupDocs.Metadata for .NET MCP server — read, write, and remove metadata properties from | 1 | Codex, OpenCode | 1 | 1,689 tok |
| groupdocs-comparison/GroupDocs.Comparison.Mcp GroupDocs.Comparison for .NET MCP server — compare PDF, Word, Excel, PowerPoint, and text | 1 | Codex, GitHub Copilot, OpenCode | 2 | 2,385 tok |
| getanyapi-com/skills getanyapi.com Official AnyAPI agent skills — hundreds of scraping & data APIs through one gateway: one k | 1 | Claude Code, Codex, OpenCode | 2 | 296 tok |
| gulmezeren2-byte/erp-report-engine A provably read-only SQL layer for AI agents (MCP) and weekly reports — over the database | 1 | Codex, GitHub Copilot, OpenCode | 2 | 2,244 tok |
| japlete/md-vision-mcp npmjs.com stdio MCP server to read or index markdown with images | 1 | Claude Code, Codex, OpenCode | 2 | 630 tok |
| iVamsi/droid-agent-kit Local, permissioned MCP server giving AI coding agents real Android dev tools — Gradle, ad | 1 | Claude Code, Codex, OpenCode | 2 | 2,719 tok |
| hakimjonas/lambe ardaproject.org Total, multi-format query language for structured data (JSON, YAML, TOML, HCL, CSV, XML, M | 1 | Claude Code, Codex, OpenCode | 2 | 2,900 tok |
| igmizo/auseklis Astrology MCP server — natal charts, transits, synastry, eclipses, retrogrades. Real ephem | 1 | Claude Code, Codex, OpenCode | 2 | 1,069 tok |
| invigil/invigil Linters check your code. Invigil checks whether your repo is legible — to newcomers and to | 1 | Codex, OpenCode | 1 | 411 tok |