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 |
|---|---|---|---|---|
| shyuan/skills A curated collection of Agent Skills for Claude Code and compatible agents. | 5 | Claude Code, Codex, OpenCode | 2 | 735 tok |
| flitzrrr/agent-skills Curated collection of AI agent skills for Antigravity, Claude Code, OpenCode & similar AI | 5 | Claude Code, Codex, GitHub Copilot, Cursor, OpenCode | 4 | 1,855 tok |
| xjli1972/book-brain A GBrain-shaped knowledge brain over open-source / free books. Markdown on disk, SQLite + | 5 | Codex, OpenCode | 1 | 1,375 tok |
| martinambrus/haive Deterministic multi-CLI orchestration and AI agentic workflow utility. | 5 | Claude Code, Codex, OpenCode | 2 | 8,065 tok |
| eduardoarantes/agentenv Project-scoped AI agent and plugin environment manager for Claude Code, Cursor, Codex, and | 5 | Claude Code, Codex, OpenCode | 7 | 2,219 tok |
| 5uck1ess/devkit A deterministic development harness for Claude Code — MCP workflow engine, enforcement hoo | 5 | Claude Code, Codex, OpenCode | 2 | 2,250 tok |
| hexsprite/claude-agents-md Claude Code plugin to enable AGENTS.md files, no CLAUDE.md vendor lock-in | 5 | Claude Code, Codex, OpenCode | 3 | 1,304 tok |
| Agentic-Insights/foundry agenticinsights.com Claude Code plugin marketplace by Agentic Insights - Beta versions of plugins for developm | 5 | Claude Code, Codex, OpenCode | 2 | 3,654 tok |
| agentinsync/agent-in-sync agentinsync.com The knowledge base AI coding agents share. Submit, search, and reuse battle-tested solutio | 5 | Claude Code, Codex, OpenCode | 2 | 5,511 tok |
| weitzu-com/ai-article-factory AI Article Factory — a Claude Code skill that turns any material/topic/product into illust | 5 | Claude Code, Codex, Gemini CLI, OpenCode | 3 | 1,465 tok |
| loki-ai-ch/spec-manager npmjs.com Make AI programming deliverable, reviewable, and traceable: L1 PRD → L2 Design → L3 Impl → | 5 | Claude Code, Codex, OpenCode | 3 | 1,703 tok |
| supachai-j/open-knowledge-format-starter Ready-to-fork starter for an AI-maintained knowledge base on the Open Knowledge Format (OK | 5 | Codex, OpenCode | 1 | 1,843 tok |
| lucasgodt/open-agent-ready-typescript | 5 | Claude Code, Codex, OpenCode | 5 | 1,963 tok |
| recondodev/recondo recondo.dev AI governance gateway. Wire-level LLM observability — every prompt, every tool call, every | 5 | Claude Code, Codex, OpenCode | 2 | 4,447 tok |
| webmaxru/is-ai-native isainative.dev Audit public GitHub repositories for AI coding readiness across Copilot, Claude Code, and | 5 | Claude Code, Codex, GitHub Copilot | 38 | 316 tok |
| Tokfuel/Tokfuel tokfuel.github.io See how you actually use Claude Code from the menu bar — local-only skill, MCP, sub-agent | 5 | Claude Code, Codex, OpenCode | 9 | 4,466 tok |
| animeshkundu/github-router animesh.kundus.in Power Claude Code, Codex CLI, and more with your Copilot subscription. | 5 | Claude Code, Codex, OpenCode | 2 | 36,055 tok |
| lixiaocong/AgentBar Coding Agent Quota/Usage Bar for Mac. Claude, Codex, Copilot, Gemini | 5 | Codex, OpenCode | 1 | 6,707 tok |
| yugo-ibuki/unitmux unitmux.vercel.app "unitmux" — Unifies your AI coding sessions into a single floating interface. | 5 | Claude Code, Codex, OpenCode | 6 | 2,562 tok |
| ghillb/swarmux ghillb.github.io Agent-first tmux async task orchestration CLI | 5 | Claude Code, Codex, OpenCode | 3 | 346 tok |
| hxt9805/cadence A discussion-driven software development workflow plugin — automatically implements discus | 5 | Claude Code, Codex, OpenCode | 1 | 154 tok |
| xChechi/xche-ai-app-security-pack stefannasev.dev Free security guardrails for apps built with AI coding tools (Claude Code, Cursor, Lovable | 5 | Claude Code, Codex, OpenCode | 2 | 1,527 tok |
| stroops/sloop stroops.tech The local-first control layer for your AI coding CLIs — one context, one cross-repo fleet | 5 | Claude Code, Codex, Gemini CLI, OpenCode | 3 | 413 tok |
| aanari/muxboard A tmux command center for AI agents, panes, and long-running terminal work. | 5 | Codex, OpenCode | 1 | 3,072 tok |
| KKenny0/card-skill A Claude Code/Codex skill that turns articles, ideas, and arguments into checked Quiet Pap | 5 | Codex, OpenCode | 1 | 757 tok |
| netopsengineer/axiom Axiom is a curated marketplace of shared plugins for Claude Code and Codex. | 5 | Claude Code, Codex, OpenCode | 2 | 2,767 tok |
| agungprasastia/toksave A zero-config CLI that securely installs and wires token-saving tools into AI coding agent | 5 | Claude Code, Codex, OpenCode | 2 | 1,284 tok |
| ValorVie/custom-skills Automated AI dev environment setup CLI with curated Skills collection for Claude Code and | 5 | Claude Code, Codex, Gemini CLI, OpenCode | 5 | 4,485 tok |
| JackyYang258/agent-teacher Turns "explain X" into a code-driven lesson | 5 | Claude Code, Codex, OpenCode | 2 | 3,211 tok |
| liliang-cn/tagit TagIt — an open-source, self-hosted Claude Tag | 5 | Claude Code, Codex, OpenCode | 2 | 2,647 tok |
| Aquaticat/Monochromatic TypeScript and Rust monorepo: Claude Code and Pi coding-agent plugins, a minimal MCP stdio | 5 | Claude Code, Codex, OpenCode | 12 | 15,120 tok |
| sydneyvb-nl/tellur tellur.dev Local-first AI code provenance: line-level attribution, PR risk reports, policy checks, an | 5 | Claude Code, Codex, OpenCode | 1 | 6,300 tok |
| thuong-nc/perlytics-skill Disciplined analyst workflows for AI assistants — 16 skills for analytics, strategy, and d | 5 | Claude Code, Codex, OpenCode | 2 | 974 tok |
| panda850819/verbs personal skill pack | 5 | Claude Code, Codex, OpenCode | 2 | 828 tok |
| Madhurr/agit Agent-native git middleware — preserves AI reasoning in every commit | 5 | Codex, OpenCode | 1 | 719 tok |
| wangshunnn/claude-telemetry Agent Telemetry for Claude Code & Codex 🎯 | 5 | Codex, OpenCode | 1 | 743 tok |
| aiman-labs/ergouzi-agent-skills Public Agent Skills and Claude Code / Codex plugins for New API and reusable workflows. | 5 | Codex, OpenCode | 1 | 982 tok |
| dofbi/seddo 🤝 Seddo — Agent coordination via GitHub Gist. Wolof: séddo = partager. A shared space whe | 5 | Codex, OpenCode | 1 | 692 tok |
| joseph0926/prompt-shield prompt quality management for Claude Code | 5 | Claude Code, Codex, OpenCode | 2 | 3,654 tok |
| rshade/mcp-devtools-server rshade.github.io AI-powered development tools server for Claude Code and MCP clients. 40+ tools for Go, Nod | 5 | Claude Code, Codex, Gemini CLI, OpenCode | 18 | 10,420 tok |
| lavallee/cub A CLI for Ralph + Beads-style development with harnesses like Claude Code and Codex | 5 | Claude Code, Codex, OpenCode | 24 | 9 tok |
| danygiguere/audit-skills Language- and framework-agnostic audit checklists for AI coding agents — security, correct | 5 | Claude Code, Codex, OpenCode | 2 | 1,611 tok |
| CyrusZhang23/AI-learning-by-claude-code Hands-on AI coding tools course (Claude Code as the main focus, including Codex/Gemini com | 5 | Claude Code, Codex, OpenCode | 5 | 3,771 tok |
| supermaciz/sessions-chronicle sessions-chronicle.maciz.dev A Gtk/Adwaita app to browse and search your AI coding sessions | 5 | Claude Code, Codex, OpenCode | 4 | 1,958 tok |
| Conradgui/loop-craft Turn goals, existing Skills, and authorized work records into bounded Agent Loops, then ex | 5 | Codex, OpenCode | 1 | 2,622 tok |
| DongDuong2001/pudo-code-system Modular, scalable, automated development intelligence. | 5 | Claude Code, Codex, GitHub Copilot, Gemini CLI, OpenCode | 8 | 1,949 tok |
| AiGuangInc/suxiaoqiang-cli superun.com sxq is the official command-line tool for Superun, the vibe coding platform. It syncs your | 5 | Codex, OpenCode | 1 | 402 tok |
| droxer/Synapse An open-source AI agent platform that does the work for you. | 5 | Claude Code, Codex, OpenCode | 2 | 1,312 tok |
| baldaworks/promptkitty npmjs.com PromptKit workflows for coding agents, the command line, and Go — agent skills plus determ | 5 | Codex, OpenCode | 1 | 1,407 tok |
| soia-team/soia-open-skills SOIA Skill ecosystem portal: authoritative specifications, Skill directory, and cross-repo | 5 | Codex, OpenCode | 1 | 839 tok |