23,799 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 agents8,544Claude Code6,892Git and workflow3,622Data and AI3,580Backend and APIs3,558Languages3,492Planning3,321Code review2,907Testing2,690DevOps and cloud2,489Writing and docs2,484Memory and context2,374Research2,321Frontend2,311Security2,178Project management1,971
All Claude Code32,539 Codex24,879 OpenCode23,799 GitHub Copilot3,723 Gemini CLI2,040 Cursor1,772 Windsurf202 Kiro116
| Project | Stars | Configures | Files | Always loaded |
|---|---|---|---|---|
| superliyang/tony-2026 tony 2026 obsidian | 2 | Codex, OpenCode | 1 | 722 tok |
| sous-chefs/beyondcompare supermarket.chef.io Development repository for the beyondcompare cookbook | 2 | Codex, OpenCode | 1 | 548 tok |
| Siddhant-135/ARIES_Website aries-website-one.vercel.app ARIES's official website (ariesiitd.com) | 2 | Codex, OpenCode | 1 | 1,083 tok |
| frontendmentorio/bookmark-landing-page frontendmentor.io This challenge will really test your layout skills. There are also areas that will require | 2 | Claude Code, Codex, OpenCode | 2 | 2,400 tok |
| coinmastersguild/pioneer-studio studio.pioneers.dev Open-source AI production studio powered by the Pioneer API | 2 | Codex, OpenCode | 1 | 771 tok |
| bescriptkiddie/oc_world oc-world-ochre.vercel.app | 2 | Codex, OpenCode | 1 | 1,770 tok |
| rajshah4/openhands-sre | 2 | Claude Code, Codex, OpenCode | 5 | 1,132 tok |
| deyloop/lianli_207_lcd Linux Driver for Lian Li Lancool 207 Digital LCD Screen | 2 | Codex, OpenCode | 1 | 1,438 tok |
| availproject/docs docs.availproject.org Official Avail Documentation | 2 | Claude Code, Codex, OpenCode | 2 | 1,229 tok |
| ya-labs/DevLab Repositório voltado ao ensino e aprofundamento técnico em desenvolvimento front-end, conte | 2 | Codex, OpenCode | 1 | 3,239 tok |
| diplodoc-platform/tabs-extension | 2 | Codex, OpenCode | 1 | 138 tok |
| 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 |
| 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 | 3,052 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 |
| 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 | 5,010 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 |