24,815 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 agents8,505Claude Code6,886Git and workflow3,611Data and AI3,580Backend and APIs3,556Languages3,487Planning3,327Code review2,899Testing2,686Writing and docs2,480DevOps and cloud2,479Memory and context2,375Research2,323Frontend2,308Security2,172Project management1,965
All Claude Code32,517 Codex24,815 OpenCode23,733 GitHub Copilot3,719 Gemini CLI2,034 Cursor1,770 Windsurf202 Kiro114
| Project | Stars | Configures | Files | Always loaded |
|---|---|---|---|---|
| veecle/chiplab veecle.ai Give agents access to virtual hardware. | 18 | Claude Code, Codex, GitHub Copilot, OpenCode | 3 | 2,171 tok |
| aa-io/site ambrosino.io Andrew Ambrosino's personal website | 18 | Codex, OpenCode | 1 | 1,159 tok |
| nodnarbnitram/claude-code-extensions These are a collection of extension for Claude Code that can typically also be used in ope | 18 | Claude Code, Codex, OpenCode | 11 | 4,389 tok |
| a-tokyo/agent-skills skills.sh 🧠 AI Agent skills for LLMs and AI Agents - Claude, Codex, Cursor etc. | 18 | Claude Code, Codex, OpenCode | 2 | 1,128 tok |
| Thibaultbm/claude-seo-geo sorank.com SEO & GEO skills for Claude Code, built with Claude Mythos 5. Rank in Google AND in LLMs ( | 18 | Claude Code, Codex, OpenCode | 1 | 1,031 tok |
| iannuttall/mailroom Private email infrastructure for people and AI agents. | 18 | Claude Code, Codex, OpenCode | 2 | 1,623 tok |
| maojiebc/majia-guanyuan GuanYuan BI · Practical Edition — a hands-on enhancement layer built on top of the officia | 18 | Codex, OpenCode | 1 | 2,368 tok |
| oscal-compass-lab/compliance-trestle-skills Agent-portable Compliance Trestle and OSCAL engineering toolkit: convert legacy SSPs to OS | 18 | Codex, Gemini CLI, OpenCode | 2 | 1,658 tok |
| Parslee-ai/neo A self-improving code reasoning engine with persistent semantic memory | 18 | Claude Code, Codex, OpenCode | 18 | 2,813 tok |
| blxzer77/cursor-trellis | 18 | Claude Code, Codex, OpenCode | 15 | 4,726 tok |
| ReadyToGo-Education/fluxo_criativo | 18 | Claude Code, Codex, OpenCode | 6 | 23,770 tok |
| bezael/sdd-creator Genera specs siguiendo la metodología Spec-Driven Development de Dominicode (Bezael Pérez) | 18 | Claude Code, Codex, OpenCode | 2 | 2,825 tok |
| alifanov/scopegate scopegate.dev AI Access Proxy Layer — granular permission gateway for AI agents. Connect services, defin | 18 | Claude Code, Codex | 4 | 7,613 tok |
| Zandereins/schliff pypi.org Deterministic quality scorer for AI agent instruction files — 8-dimension scoring with sec | 18 | Codex, OpenCode | 1 | 1,073 tok |
| earonesty/boxpdf earonesty.github.io Tiny box-layout DSL over pdf-lib. Flexbox-lite for server-side PDF generation in Node, Clo | 18 | Codex, OpenCode | 1 | 148 tok |
| ray-manaloto/notebooklm-claude-integration NotebookLM integration for Claude Desktop (MCP) and Claude Code (Plugin) - unified researc | 18 | Claude Code, Codex, OpenCode | 3 | 3,194 tok |
| kununu/agent-bridge This skill accommodates Agent-to-Agent communitcation: e.g. Codex asking Claude for a revi | 18 | Codex, OpenCode | 1 | 139 tok |
| XBP-Europe/sagemath-mcp pypi.org Stateful SageMath MCP server: 40 tools for symbolic math, algebra, number theory, graphs, | 18 | Claude Code, Codex, OpenCode | 2 | 5,576 tok |
| AndyShaman/telegram-business-bridge ai-handler.com Connect any AI agent to your personal Telegram via the official Business API — no userbot, | 18 | Claude Code, Codex, OpenCode | 2 | 2,255 tok |
| liujuanjuan1984/codex-a2a Expose Codex through A2A with an inbound server surface and embedded outbound client. | 18 | Codex, OpenCode | 1 | 1,097 tok |
| tene-ai/tene tene.sh AI-safe secret manager CLI for Claude Code, Cursor, and other AI agents. Local-first, encr | 18 | Claude Code, Codex, GitHub Copilot, Gemini CLI, OpenCode | 4 | 3,109 tok |
| yelmuratoff/agent_sync One source of truth for your AI coding rules. AgentSync generates them for 14 tools in eac | 18 | Claude Code, Codex | 13 | — |
| TheLobbi/Claude-m Claude Microsoft plugins | 18 | Claude Code, Codex, OpenCode | 12 | 5,969 tok |
| twells89/sigma-migration-skills Claude Code plugin marketplace: migrate Tableau / Power BI / Qlik to Sigma (converter + as | 18 | Codex, OpenCode | 1 | 3,833 tok |
| remsky/comic-chat-web comics.remsky.art Modern port of Microsoft Comic Chat 1996 on Cloudflare Durable Objects || Create custom st | 18 | Claude Code, Codex, OpenCode | 2 | 1,296 tok |
| Neeeophytee/ai-watermarks-reality-check Test what AI watermark and provenance evidence exists, whether it verifies, and what survi | 18 | Codex, OpenCode | 1 | 652 tok |
| context4ai/agent-graph context4ai.org Graph Engineering for Agent Skills: a specification and toolchain for dynamically discover | 18 | Codex, OpenCode | 1 | 442 tok |
| codybrom/clairvoyance clairvoyance.fyi ESP for AI Coding — Agent skills on the philosophy on software design, grounded in decades | 18 | Codex, OpenCode | 1 | 659 tok |
| sandraschi/qcad-mcp fastmcp 3.4 server plus webapp for qcad pro architectural cad | 18 | Claude Code, Codex, GitHub Copilot, Cursor, OpenCode, Windsurf | 6 | 744 tok |
| lennyzeltser/mcp-expertise-toolkit Turn domain expertise into AI-accessible MCP servers | 18 | Codex, OpenCode | 1 | 58 tok |
| jmagly/kintsugi-usb AI-assisted rescue boot USB — a Ventoy multi-boot drive on Ubuntu 24.04 with offline LLM i | 18 | Claude Code, Codex, OpenCode | 21 | 3,014 tok |
| zaber-dev/free-ai-gateway npmjs.com Enterprise-grade capability-driven AI routing engine, proxy gateway, MCP server, developer | 18 | Claude Code, Codex, OpenCode | 5 | 1,137 tok |
| lance0/nbox crates.io Terminal UI, CLI, and MCP server for NetBox — fast search, IPAM lookups, and device contex | 18 | Codex, OpenCode | 1 | 5,575 tok |
| davidmosiah/samsung-health-mcp wellness.delx.ai Unofficial local-first MCP server for Samsung Health personal-data CSV/ZIP exports. | 18 | Codex, OpenCode | 1 | 162 tok |
| G-Research/bobbit Agent workforce manager for product owners | 18 | Claude Code, Codex, OpenCode | 12 | 1,618 tok |
| aporb/agentic-os A minimal, opinionated template for turning any AI agent CLI into a persistent operating s | 18 | Claude Code, Codex, Cursor, OpenCode | 3 | 2,326 tok |
| DoRmAmMu1997/My-Algo-Trading-Code Python algorithmic trading suite: signal generators, backtests, and a multithreaded paper- | 18 | Claude Code, Codex, OpenCode | 2 | 14,138 tok |
| tallclub/matimo matimo.dev Policy-governed tool execution for AI agents. One YAML tool definition for Python, TypeScr | 18 | Claude Code, Codex, GitHub Copilot, OpenCode | 15 | 13,898 tok |
| maxkuminov/obsidian-mcp Self-hosted MCP server for Obsidian: semantic + full-text search, wikilink graph, note CRU | 18 | Claude Code, Codex, OpenCode | 2 | 14,180 tok |
| arjitj2/skillindex skillindex.app Keep your AI setup aligned across every agent, 100% locally. | 18 | Codex | 1 | — |
| vcqr/ashell vcqr.github.io A lightweight, attractive AI-powered cross-platform SSH client supporting SFTP, port forwa | 18 | Codex, OpenCode | 1 | 196 tok |
| PANGKAIFENG/ai-product-manager-skills AI product manager skills for Codex/Claude: brainstorming, product research, PRD workflows | 18 | Codex, OpenCode | 1 | 561 tok |
| andreapollastri/newsletter newsletter.web.ap.it Open Source Newsletter System | 18 | Claude Code, Codex, OpenCode | 2 | 5,350 tok |
| anivar/developer-docs-framework skills.sh AI agent skill for technical docs — Diataxis + 27 rules, 6 style guides (Google, Good Docs | 18 | Codex, OpenCode | 1 | 21,969 tok |
| gszr/lunar a truly open experimental coding harness | 18 | Codex, OpenCode | 1 | 1,068 tok |
| toonhuysmans/pocket-scion-synth Real-time generative synthesis firmware for the Pocket SCION | 18 | Codex, OpenCode | 1 | 1,475 tok |
| sourcenetwork/defradb.rs A full implementation of DefraDB in Rust | 18 | Codex, OpenCode | 1 | 9,106 tok |
| aiqinxuancai/e-language-skill AI Agent Skill for Yi Language (e-language) projects. | 18 | Codex, OpenCode | 1 | 90 tok |
| delta-exchange/delta-exchange-mcp mcp.delta.exchange Official Delta Exchange MCP | 18 | Codex, OpenCode | 1 | 6,314 tok |
| macanderson/stella stella.oxagen.sh A coding agent that builds it's own tools and mines it's own skills and always ships with | 18 | Claude Code, Codex, OpenCode | 5 | 46,046 tok |