23,761 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 agents8,530Claude Code6,887Git and workflow3,618Data and AI3,582Backend and APIs3,558Languages3,485Planning3,325Code review2,903Testing2,691DevOps and cloud2,482Writing and docs2,481Memory and context2,373Research2,322Frontend2,310Security2,179Project management1,971
All Claude Code32,523 Codex24,842 OpenCode23,761 GitHub Copilot3,723 Gemini CLI2,038 Cursor1,771 Windsurf201 Kiro116
| Project | Stars | Configures | Files | Always loaded |
|---|---|---|---|---|
| rchaz/tunelab Claude Code plugin for LLM fine-tuning, distillation, and evaluation — decide whether you | 6 | Codex, OpenCode | 1 | 1,026 tok |
| isaacriehm/cairn Persistent ground truth for Claude Code. Stop AI agents from drifting on your codebase. | 6 | Claude Code, Codex, OpenCode | 2 | 2,269 tok |
| mzored/init-deep AI documentation generator for Claude Code, Cursor, Copilot, Gemini CLI, Codex, Windsurf, | 6 | Claude Code, Codex, GitHub Copilot, Gemini CLI, OpenCode | 4 | 3,843 tok |
| softcane/codex-blackbox Codex CLI session supervision: see failed or incomplete turns, token use, model changes, c | 6 | Codex, OpenCode | 1 | 1,559 tok |
| leejpsd/nextjs-cache-handler Redis cache handler for Next.js 16 — supports both cacheHandler (ISR) & cacheHandlers ('us | 6 | Codex, OpenCode | 1 | 496 tok |
| onorbumbum/sand onuruzunismail.com Sand is a Swift CLI for Apple silicon Macs. It creates small named Linux environments. Eac | 6 | Codex, OpenCode | 1 | 2,293 tok |
| wei-b0/codexbar-lite getcodexbar.xyz A tiny native macOS menu bar app for monitoring Codex usage - no browser extensions, no Ch | 6 | Codex, OpenCode | 1 | 914 tok |
| elastic/jingra Competitive Benchmarking Framework | 6 | Claude Code, Codex, OpenCode | 2 | 390 tok |
| narumiruna/ly-mcp | 6 | Codex, OpenCode | 1 | 748 tok |
| sreyas-endor/observatory | 6 | Codex, OpenCode | 1 | 1,389 tok |
| davidmosiah/polar-mcp wellness.delx.ai Unofficial local-first Polar AccessLink Dynamic API v4 MCP server for AI agents | 6 | Codex, OpenCode | 1 | 150 tok |
| sandraschi/godot-mcp Godot 4 automation via FastMCP — scene/mesh/PBR/particles, STL import, HTML5 export. For C | 6 | Claude Code, Codex, GitHub Copilot, Cursor, OpenCode, Windsurf | 6 | 1,476 tok |
| yugui923/db-connect-mcp Multi-database MCP server for PostgreSQL, MySQL, and ClickHouse | 6 | Claude Code, Codex, OpenCode | 2 | 3,271 tok |
| brainOS-HQ/brain-os brainos-hq.com BrainOS is one memory for every AI tool: your AI picks up where you left off, with the dec | 6 | Claude Code, Codex, GitHub Copilot, OpenCode | 3 | 4,217 tok |
| VitalyOstanin/youtrack-mcp MCP server for YouTrack: issues, attachments, work items, time reports, knowledge base | 6 | Claude Code, Codex, OpenCode | 2 | 4,661 tok |
| netixc/stremio-mcp pypi.org Python MCP server for TMDB search, Stremio library management, and Android TV playback/con | 6 | Claude Code, Codex, OpenCode | 2 | 1,409 tok |
| RyanCardin15/Perigee-Tides | 6 | Claude Code, Codex, OpenCode | 2 | 2,239 tok |
| Traves-Theberge/openlens npmjs.com openlens is an opencode, code review tool that runs multiple specialized AI agents in para | 6 | Claude Code, Codex, Gemini CLI, OpenCode | 4 | 5,541 tok |
| louisbrulenaudet/bodyboard Canonical instructions for coding assistants from a single AGENTS.md ✨ | 6 | Claude Code, Codex, GitHub Copilot, Gemini CLI, OpenCode | 4 | 3,604 tok |
| louisfghbvc/task-management-system A complete task management system | 6 | Codex, OpenCode | 1 | 241 tok |
| KittLabsAI/KittyCode A minimal, hackable AI coding agent with a composable tool loop and modular skills | 6 | Codex, OpenCode | 1 | 175 tok |
| neskuchny/sima_atlas tessent.ai Visual contract-first development for AI coding agents — graph of contracts between you an | 6 | Claude Code, Codex, OpenCode | 3 | 1,827 tok |
| vatsalunadkat/ERICKeyboard vatsalunadkat.github.io Accessibility focused keyboard for Android and iOS using swipe based chord inputs. | 6 | Claude Code, Codex, GitHub Copilot, OpenCode | 3 | 4,109 tok |
| Deploi-Cloud/deploi-agent-skills AI Agent Skills for Deploi Norwegian Cloud VPS | 6 | Codex, OpenCode | 1 | 355 tok |
| Juliocbm/beacon-docs Opinionated documentation convention + CLI for AI-collaborative codebases. Scaffolds docs, | 6 | Claude Code, Codex, Cursor, Gemini CLI, OpenCode | 4 | 4,581 tok |
| ninsau/nextjs-reusable-table nextjs-reusables.vercel.app A highly customizable and reusable table component for Next.js applications, built with Ty | 6 | Codex, OpenCode | 1 | 728 tok |
| flanliulf/cord CORD is a document relationship graph engine for AI-assisted development. It uses determin | 6 | Claude Code, Codex, OpenCode | 56 | 697 tok |
| Traves-Theberge/opencode-mcp MCP server that exposes OpenCode as a tool/subagent for IDEs and AI clients | 6 | Claude Code, Codex, GitHub Copilot, Cursor, OpenCode | 5 | 1,998 tok |
| vlad-ryzhkov/ai-context-engineering-for-qa AI Context Engineering for QA | 6 | Claude Code, Codex, OpenCode | 27 | 1,237 tok |
| ArmisSecurity/armis-appsec-mcp AI-powered security scanning MCP plugin for Claude Code | 6 | Claude Code, Codex, GitHub Copilot, OpenCode | 3 | 8,554 tok |
| suyogpawar88/Threat-Model suyogpawar88.github.io | 6 | Codex, OpenCode | 1 | 1,275 tok |
| jl-cmd/claude-dev-env | 6 | Claude Code, Codex, GitHub Copilot, Cursor, OpenCode | 7 | 1,147 tok |
| CodeTeng/harness-template Harness Engineering template, ready to use | 6 | Claude Code, Codex, Cursor, OpenCode | 11 | — |
| karlng279/ai-ready-product-workflow-v2 karlng279.github.io AI-Ready Product Workflow V2 | 6 | Claude Code, Codex, Cursor, Gemini CLI, OpenCode | 11 | 8,319 tok |
| avivsinai/sabx A fast, scriptable CLI for SABnzbd - built for AI coding agents like Claude Code, Cursor, | 6 | Claude Code, Codex, OpenCode | 2 | 1,008 tok |
| TxnLab/skills Curated agent skills for TxnLab's Algorand ecosystem — NFDomains, use-wallet, Haystack Rou | 6 | Claude Code, Codex, OpenCode | 2 | 491 tok |
| hyfdev/moonbit-agent-skills Agent Skills for MoonBit. Help coding agents work with MoonBit and write better MoonBit co | 6 | Codex, OpenCode | 1 | 2,041 tok |
| lathe-cli/kitup Shared installer SDK for bundled Agent Skills. | 6 | Codex, OpenCode | 1 | 1,531 tok |
| netresearch/typo3-conformance-skill Agent Skill: TYPO3 extension conformance checker - validates against official standards | | 6 | Codex, OpenCode | 1 | 940 tok |
| segunadebayo/design-eng-skills Agent skills for design engineers: state machine design, component API design, engineering | 6 | Claude Code, Codex, OpenCode | 2 | 72 tok |
| usetemi/skills usetemi.com Open-source agent skills for Claude Code, Claude Cowork, Codex, Cursor, and Gemini CLI. Co | 6 | Claude Code, Codex, OpenCode | 2 | 339 tok |
| owenob1/prompt-improver Turn vague agent prompts into precise, verifiable XML specs — then execute them. Headless | 6 | Claude Code, Codex, OpenCode | 2 | 2,785 tok |
| dolutech/dolu-agents-skills Dolu Agents Skills - Open-source collection of modular and extensible skills for AI agents | 6 | Codex, OpenCode | 1 | 4,587 tok |
| zenml-io/skills docs.zenml.io AI coding agent skills for ZenML MLOps workflows — quick wins, pipeline setup, and more | 6 | Claude Code, Codex, OpenCode | 2 | 4,687 tok |
| srbryers/slope SLOPE — Sprint Lifecycle & Operational Performance Engine. Golf-metaphor sprint scoring fo | 6 | Claude Code, Codex, Cursor, OpenCode | 10 | 5,072 tok |
| mtnyilmaz/agents | 6 | Claude Code, Codex, OpenCode | 57 | 2,391 tok |
| Wizarck/ai-playbook Universal AI-dev norms, specs, scripts, and templates for Wizarck org projects (consumed v | 6 | Codex, OpenCode | 1 | 4,204 tok |
| ucsahinn/ai-project-starter AI Project Starter: documentation-first starter kit for AI-coded projects, project context | 6 | Codex, OpenCode | 1 | 314 tok |
| 233i/agent-skills Production-grade engineering skills for AI coding agents. | 6 | Claude Code, Codex, OpenCode | 2 | 1,381 tok |
| rizkyhaksono/portfolio-v3 natee.my.id Portfolio v3 using Next.js 16 with SSR, CSR, ISR, Azure Web App, Portainer. | 6 | Claude Code, Codex, GitHub Copilot, Cursor, Gemini CLI, OpenCode | 6 | 10,861 tok |