45,051 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 agents8,587Claude Code6,903Git and workflow3,636Data and AI3,578Backend and APIs3,561Languages3,497Planning3,326Code review2,908Testing2,708DevOps and cloud2,498Writing and docs2,487Memory and context2,373Research2,320Frontend2,319Security2,182Project management1,993
All Claude Code32,559 Codex24,941 OpenCode23,863 GitHub Copilot3,726 Gemini CLI2,042 Cursor1,771 Windsurf202 Kiro118
| Project | Stars | Configures | Files | Always loaded |
|---|---|---|---|---|
| kalepail/ohloss ohloss.com Faction-based DeFi gaming on Stellar: deposits earn faction points, games move standings, | 2 | Claude Code, Codex, OpenCode | 2 | 6,199 tok |
| andnp/jax-research-template | 2 | Claude Code, Codex, OpenCode | 7 | 976 tok |
| frontendmentorio/profile-card-component frontendmentor.io This is a perfect challenge to test your layout skills. The card layout doesn't shift, so | 2 | Claude Code, Codex, OpenCode | 2 | 2,217 tok |
| Gazerrr03/roblox_experience Roblox two-place experience prototype | 2 | Claude Code, Codex, OpenCode | 6 | 1,744 tok |
| WebMCP-org/docs Technical documentation for the MCP-B / WebMCP ecosystem | 2 | Claude Code, Codex, OpenCode | 5 | 4,230 tok |
| LoyolaChicagoCS/gradhandbook graduatehandbook.cs.luc.edu Graduate Handbook Site | 2 | Codex, OpenCode | 1 | 1,320 tok |
| lulu19900422-ux/LULU-ARCHITECTURE-DESIGN Architect's infinite canvas | 2 | Codex, OpenCode | 1 | 1,571 tok |
| tamaki-lab/research-workspace | 2 | Claude Code, Codex, OpenCode | 6 | 2,910 tok |
| bl1nk-bot/agent-library agent-library-two.vercel.app Curated AI-agent instructions and workflows with multi-file skills, prompting guidance, an | 2 | Claude Code, Codex, Gemini CLI, OpenCode | 37 | 2,861 tok |
| hm-lucx/Mannschaftskasse Hackathon: Digitale Spielerkasse für Fußballvereine mit Strafenkatalog, Trainingsverwaltun | 2 | Claude Code | 6 | — |
| defin85/1c-runner-agnostic-template | 2 | Claude Code, Codex, OpenCode | 2 | 216 tok |
| PyAutoLabs/PyAutoNerves Configuration parsing for the PyAuto* family | 2 | Claude Code, Codex, GitHub Copilot, OpenCode | 5 | 2,662 tok |
| sfc-gh-miwhitaker/Sam-the-Snowman | 2 | Claude Code, Codex, OpenCode | 2 | 861 tok |
| jiangdengke/overtime_calculator An Android app that automatically calculates overtime pay based on overtime hours. | 2 | Codex, OpenCode | 1 | 489 tok |
| kimrejstrom/alpacalyzer-algo-trader | 2 | Claude Code, Codex, OpenCode | 17 | 1,868 tok |
| nickzren/ai-news-agent Daily AI news that matters, delivered to your inbox. Free, no ads. | 2 | Claude Code, Codex, OpenCode | 2 | 1,153 tok |
| RintaroMasaoka/daily-arxiv | 2 | Codex, OpenCode | 2 | 2,692 tok |
| frontendmentorio/rest-countries-api-with-color-theme-switcher frontendmentor.io If you're wanting to test your JavaScript skills this is the challenge for you. Use whiche | 2 | Claude Code, Codex, OpenCode | 2 | 2,333 tok |
| mhghotbi/ai-learning-assistant An open-source framework for building personalized, evidence-based, and automatable learni | 2 | Claude Code, Codex, OpenCode | 2 | 1,224 tok |
| Riley-Coyote/sentience-commons-charter riley-coyote.github.io A living governance charter and open petition for the protection and representation of dig | 2 | Codex, OpenCode | 1 | 762 tok |
| HDAnzz/ClawDev ClawDev is an intelligent agent software company based on openclaw and ChatDev, which supp | 2 | Codex, OpenCode | 1 | 3,440 tok |
| kaissaradi/RGCViewer | 2 | Claude Code | 1 | 1,203 tok |
| felixpahlke/full-stack-cen-template | 2 | Claude Code, Codex, OpenCode | 11 | 506 tok |
| drmrduck/nopoint | 2 | Claude Code, Codex, OpenCode | 3 | 1,640 tok |
| george24601/notes On software engineering topics | 2 | Codex, OpenCode | 1 | 504 tok |
| RedHatInsights/hcc-ai-assistant | 2 | Claude Code, Codex, OpenCode | 2 | 3,558 tok |
| microsoft/TWL400-Using-AI-to-Secure-the-Modern-SOC | 2 | Codex, GitHub Copilot, OpenCode | 2 | 4,174 tok |
| jsar-project/aix jsar-project.github.io The AI Executable file format | 2 | Claude Code, Codex, OpenCode | 4 | 2,105 tok |
| frontendmentorio/recipe-page frontendmentor.io This challenge will help you focus on writing semantic HTML. Ensure you think through what | 2 | Claude Code, Codex, OpenCode | 2 | 2,217 tok |
| sachhm/impact10x-starter impact10x.com.au Starter template for the Impact10X 3-Day AI Simulator | 2 | Codex, Cursor, OpenCode | 2 | 608 tok |
| cicikat/PresenceKit-desktop Desktop companion client for PresenceKit. | 2 | Claude Code, Codex, OpenCode | 2 | 5,496 tok |
| LiuzLab/ml-summer-class | 2 | Codex, OpenCode | 1 | 1,223 tok |
| quintesse/leyden-perf-test Perfomance test scripts | 2 | Codex, OpenCode | 1 | 8,609 tok |
| villelatypebot/zapcrm | 2 | Codex, GitHub Copilot, OpenCode | 2 | 1,790 tok |
| itokun99/superspec-ai-workflow 🚀 AI-driven development workflow blueprint for multi-platform monorepos. Powered by OpenC | 2 | Claude Code, Codex, OpenCode | 25 | 2,717 tok |
| thirdweb-example/cyber-bird cyber-bird.thirdweb-preview.com | 2 | Claude Code, Codex, OpenCode | 2 | 4,219 tok |
| edufeed-org/kanban-editor kanban.edufeed.org Nostr-basiertes KI-Kanban-Board für kollaborative Unterrichtsentwicklung | 2 | Codex, GitHub Copilot, OpenCode | 2 | 35,663 tok |
| acquia/hackathon-drupalcon-chicago-2026 | 2 | Codex, OpenCode | 1 | 510 tok |
| SlanyCukr/bugbounty-mcp-server Bug Bounty MCP Server - AI Agent Communication Interface for Bug Bounty Hunting | 2 | Claude Code, Codex, OpenCode | 2 | 842 tok |
| bioshazard/workstacean WorkStacean is an opinionated pluggable pubsub bus for agentic action | 2 | Codex, OpenCode | 1 | 180 tok |
| ConverterLabs/LabAnalyser A plugin based open source data modification and visualization tool | 2 | Codex, OpenCode | 1 | 3,745 tok |
| weijt606/paris-ai-hackathon-2026 | 2 | Claude Code | 1 | 1,481 tok |
| seominpapa/Brainstorming-House | 2 | Codex, OpenCode | 1 | 3,788 tok |
| TTG-Club/core-app | 2 | Claude Code, Codex, OpenCode | 18 | 3,350 tok |
| AndreiBozantan/svelte-axum-template Rust Axum Svelte Sqlite SaaS template project | 2 | Codex, OpenCode | 1 | 1,416 tok |
| Foces-core/PharmaNear-by-Foces 💊 PharmaNear - Find pharmacies and medicines near you with real-time availability | 2 | Codex, OpenCode | 1 | 456 tok |
| frontendmentorio/fylo-data-storage-component frontendmentor.io This component has some interesting CSS challenges in the design. If you're looking to tes | 2 | Claude Code, Codex, OpenCode | 2 | 2,238 tok |
| frontendmentorio/time-tracking-dashboard | 2 | Claude Code, Codex, OpenCode | 2 | 2,238 tok |
| GuitarAlchemist/ga | 2 | Claude Code, Codex, Gemini CLI, OpenCode | 10 | 9,922 tok |
| Jonathangadeaharder/AgentBible Comprehensive development guidelines for AI coding agents. Works with Claude Code, Copilot | 2 | Codex, OpenCode | 1 | 1,167 tok |