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 |
|---|---|---|---|---|
| dongtang3/mnemic Local-first memory kernel for coding agents: MCP-native, temporal, auditable, source-keyed | 2 | Claude Code, Codex, OpenCode | 2 | 316 tok |
| Vedant9500/OpenLMlib Cross-project knowledge library for LLM agents with semantic retrieval, citation-aware qua | 2 | GitHub Copilot | 2 | — |
| k-rister/ephemeral-buffer-mcp Ephemeral in-memory command output capture and hybrid search MCP server for coding agents. | 2 | Claude Code, Codex, OpenCode | 2 | 949 tok |
| Celmis-labs/Celmis celmis-labs.github.io Self-hosted. Your monitoring already told you something broke — Celmis is what happens nex | 2 | Claude Code | 1 | — |
| dynmie/foolfuuka-mcp-server MCP server for querying 4chan archives via the FoolFuuka API | 2 | Claude Code, OpenCode | 10 | — |
| bchoor/bws-mcp Remote MCP for Bitwarden Secrets Manager on Cloudflare Workers (list, get, put, delete) | 2 | Codex, OpenCode | 1 | 817 tok |
| sinanpl/mcp-memes A situation-aware meme editor, served over MCP. Describe a situation, get five captioned m | 2 | Claude Code | 1 | 1,509 tok |
| zai-one/telegram-ads-mcp zai.one Unofficial MCP server for Telegram Ads (TON cabinet, Gram currency). For Claude, Cursor, a | 2 | Claude Code, Codex, OpenCode | 2 | 2,892 tok |
| Muqaram0/oscp-companion oscp-companion.vercel.app OSCP methodology knowledge base with web UI and MCP server | 2 | Claude Code, Codex, OpenCode | 2 | 79 tok |
| cunzai97/Memory-DB Minimal vector memory for AI agents — store, search, update, delete via semantic similarit | 2 | Claude Code | 1 | 473 tok |
| ingjohnfigueroablanco/Fast-browser-MCP | 2 | Claude Code | 1 | — |
| liangjunglj-cpu/almond-mcp Almond - MCP server for Rhino 8: semantic scene layer, curated asset libraries, Karamba ca | 2 | Codex, OpenCode | 1 | 1,108 tok |
| Mandrilsquad1441/codex-davinci-resolve-mcp mandrilsquad1441.github.io Secure, local-first Codex plugin and MCP control plane for DaVinci Resolve studio workflow | 2 | Codex, OpenCode | 1 | 432 tok |
| adiosdotdev/mcp | 2 | Gemini CLI | 1 | 164 tok |
| ikraamg/csstruth Hard ground truth for CSS — the browser's rendered layout as deterministic, diffable text | 2 | Claude Code | 1 | 2,060 tok |
| ShreddyKrueger75/claude-orcaslicer-mcp MCP server for OrcaSlicer: headless slicing, preset management, G-code analysis, and Elego | 2 | Claude Code | 1 | 31 tok |
| coltonbearden/carrel coltonbearden.github.io Read, index, pack and file your documents — from the terminal, for you and your agents. | 2 | Claude Code | 2 | 1,201 tok |
| oscarthroedsson/willys-mcp | 2 | Claude Code | 1 | 1,528 tok |
| vypdev/homeassistant-gateway Secure Home Assistant-native MCP gateway with observer/operator profiles, credential manag | 2 | Codex, OpenCode | 1 | 654 tok |
| fmilioni/agents-board A Jira for your agents. sprint/card/doc project management exposed over MCP, so AI agents | 2 | Claude Code, Codex, OpenCode | 3 | 2,090 tok |
| zai-one/grok-build-mcp zai.one MCP bridge that hands the coding loop to Grok CLI and returns a verified receipt. Save Cla | 2 | Claude Code, Codex, OpenCode | 3 | 8,527 tok |
| 0xZoharHuang/garment-cad-mcp Agent-safe transactional garment CAD tooling for Valentina, GarmentCode, and remote Warp s | 2 | Claude Code | 1 | — |
| dgraziosi/foundation Personal ontology + MCP for agents — a foundation they can grow. | 2 | Claude Code, Codex, Cursor | 11 | — |
| ajmichels/moneta-notes A personal notes system built around an Obsidian vault, providing fast full-text and seman | 2 | Claude Code | 1 | 2,149 tok |
| TimWongUp/keepygaga Cross-agent core memory in local Markdown, with MCP tools, native hooks, and installers fo | 2 | Claude Code, Codex, OpenCode | 2 | 2,140 tok |
| no-materials/hird A typed language for LLM agent systems on BEAM: effect-row tracking, auditable tool effect | 2 | Claude Code, Codex, OpenCode | 2 | 1,667 tok |
| AndreaGriffiths11/machine-mcp Laptop-side MCP server so an AI agent can use the human's own machine. | 2 | Codex, OpenCode | 1 | 531 tok |
| altryne/mcpilled mcpilled.vercel.app MCPilled.com is a collection of curated news about MCP servers, clients, protocol updates | 2 | Claude Code | 1 | 252 tok |
| joemclo/property-prices-mcp UK Property Price Search MCP Server | 2 | Codex, OpenCode | 1 | 716 tok |
| Baighasan/Chat-Royale chat-royale.com A Clash Royale agent, powered by a custom built Clash Royale MCP server. Enables the agent | 2 | Claude Code | 1 | 3,760 tok |
| supernovae-st/nika-plugins docs.nika.sh One Add teaches your agent Nika: skills, commands, hooks, an MCP oracle. | 2 | Codex, OpenCode | 1 | 1,195 tok |
| msinclair25/mdevolved mdevolved.com Durable, owner-controlled project memory for humans and AI agents across tools and compute | 2 | Codex, OpenCode | 1 | 4,542 tok |
| darcivieira/kanbanize-sdk | 2 | Claude Code | 11 | 1,692 tok |
| fiscaltec/vitally-mcp | 1 | Claude Code | 3 | 32,358 tok |
| fo0/clawstash AI-optimized stash storage — dynamic RAG for agents. Store, search, and retrieve docs, cod | 1 | Claude Code, Codex, OpenCode | 25 | 3,997 tok |
| ormastes/simple | 1 | Claude Code, Codex, Gemini CLI, OpenCode | 84 | 11,207 tok |
| jyswee/oddsockets oddsockets.ai Agent-first CLI for OddSockets real-time messaging. As simple as git. | 1 | Codex, OpenCode | 1 | 649 tok |
| aiven/aiven-ai-plugins A plugin for Claude and Cursor for managing services and building applications with Aiven | 1 | Claude Code | 1 | — |
| astafford8488/agentaegis-mcp MCP server for cybersecurity operations — compliance, vuln scans, code security, threat in | 1 | Codex, OpenCode | 1 | 2,212 tok |
| sandovalrr/project-context | 1 | Codex, OpenCode | 1 | 143 tok |
| ebenezer-isaac/llmconveyors-mcp llmconveyors.com MCP server that connects AI agents to LLM Conveyors — run Job Hunter, B2B Sales, and more | 1 | Claude Code | 1 | 2,331 tok |
| jasoft/ursoft-skills My personal Codex skills collection (ursoft-skills) | 1 | Codex, OpenCode | 1 | 612 tok |
| phuetz/code-explorer Graph-powered code intelligence for AI agents — a Rust engine that maps your whole codebas | 1 | Claude Code | 2 | 4,914 tok |
| s-nems/open-northland A modern, open-source reimplementation of the Cultures game series | 1 | Claude Code, Codex, OpenCode | 8 | 2,436 tok |
| BuyWhere/buywhere BuyWhere agent-native product catalog API | 1 | Codex, OpenCode | 1 | 1,103 tok |
| LinVireo/browsertap-mcp Real-browser MCP server with a resilient Chrome CDP bridge, background input, dialogs, cap | 1 | Codex, OpenCode | 1 | 1,167 tok |
| hongnoul/mit-dining-mcp MCP server for MIT dining hall menus (Bon Appétit) | 1 | Claude Code | 1 | 723 tok |
| finfin/mermaid-mcp-app Interactive Mermaid Editor inside Claude Desktop / VSCode Copilot | 1 | Claude Code, Codex | 1 | — |
| nolindnaidoo/colors-le letools.dev Extract every color in a codebase, and say which ones are not in your palette | 1 | Claude Code, Codex, GitHub Copilot, Cursor, Gemini CLI, OpenCode, Windsurf | 6 | 8,235 tok |
| wardawgmalvicious/agent-config Skills, coding rules, hooks, a subagent and MCP templates for coding agents — day-to-day M | 1 | Claude Code | 2 | 18,177 tok |