43,750 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 agents7,690Claude Code6,656Data and AI3,669Backend and APIs3,506Languages3,395Planning3,227Git and workflow3,219Code review2,753Testing2,387Memory and context2,368Writing and docs2,331DevOps and cloud2,317Research2,292Frontend2,266Security2,036Productivity1,725
All Claude Code31,992 Codex23,401 OpenCode22,346 GitHub Copilot3,564 Gemini CLI1,917 Cursor1,741 Windsurf146 Kiro83
| Project | Stars | Configures | Files | Always loaded |
|---|---|---|---|---|
| Ismola/personal-copilot-instructions 🎯 Template de instrucciones personalizadas para GitHub Copilot Define reglas y convencion | 1 | GitHub Copilot | 3 | 4,018 tok |
| nerdCopter/copilot-prompts VS Code Copilot prompt/instructions repository: agents, skills, instructions, and prompt f | 1 | Codex, OpenCode | 1 | 348 tok |
| skaramicke/github-copilot-tdd-instructions | 1 | GitHub Copilot | 1 | 731 tok |
| zamax14/Copilot-Tools Custom prompts, agents, skills, instructions y hooks para github copilot. | 1 | Claude Code, GitHub Copilot | 13 | 6,855 tok |
| lsampaioweb/ai-instructions Centralized VS Code Copilot configuration repository for software development and infrastr | 1 | Claude Code, GitHub Copilot, Cursor | 65 | 37,541 tok |
| thomasiverson/copilot-compose Compose and sync copilot-instructions from a shared master repo — VS Code extension | 1 | Claude Code, Codex | 2 | — |
| Stellar-Technology-Services/ai-workshop-demo A hands-on workshop for AI-assisted development: a small C#/.NET Blazor "chat with your do | 1 | Claude Code, GitHub Copilot | 2 | 1,455 tok |
| vinn-ie/stmllm GitHub Copilot custom instructions for STM32 embedded development. | 1 | Codex, GitHub Copilot, OpenCode | 5 | 5,679 tok |
| virtualrussel/dynatrace-ai-dtctl-workspace Dynatrace AI workspace — Skills, prompts, MCP config, and Copilot instructions for observa | 1 | Claude Code, Codex, GitHub Copilot | 43 | 3,522 tok |
| Melampe001/.githum-copilot-instructions.md { "github.copilot.enable": {"*": true}, "github.copilot.chat.experimental.autoChatMode | 1 | GitHub Copilot | 1 | 4,454 tok |
| NovoaDev/copilot-instructions-BC | 1 | GitHub Copilot | 1 | 1,315 tok |
| antiotaku/github-copilot-instructions A collection of Github Copilot instructions, prompts and chatmodes for ASTRON projects | 1 | GitHub Copilot | 16 | 50,615 tok |
| LukeFrankio/LukesCopilotInstructions | 1 | Claude Code, Codex, GitHub Copilot | 39 | 227,215 tok |
| mluker/github-copilot-instructions-prompts Github Copilot instructions and prompts | 1 | GitHub Copilot | 2 | 106 tok |
| cgfixit/AzureAI-CopilotStudio-PersonalAgent-Instructions Azure OpenAI Copilot Studio Personal Agent - Production-tested system instructions for ent | 1 | Claude Code, Codex | 14 | 29 tok |
| hungthai1401/laravel-dod-instruction GitHub Copilot Custom Instructions for Laravel | 1 | GitHub Copilot | 1 | 265 tok |
| Salberg87/batonq-skills Multi-CLI role skills for batonq autonomous coding agents — worker, judge, pr-runner, expl | 1 | Claude Code, Codex, OpenCode | 2 | 119 tok |
| MarcelRoozekrans/AgenticAI Template for AI-assisted development workflows using agentic primitives and context engine | 1 | GitHub Copilot | 5 | 2,515 tok |
| OpenOps-Studio/vibe-driven-dev Agent-first framework for safe vibe coding. Turn messy product ideas into structured plans | 1 | Claude Code, Codex, OpenCode | 8 | 4,099 tok |
| jaemk/mind jaemk.github.io A package manager for agent tooling: meld git repos of skills, agents, rules, and tools in | 1 | Claude Code | 3 | 4,662 tok |
| TheStreamCode/agentic-rd-skill mikesoft.it Portable multi-agent research workflow skill for Codex, Claude Code, GitHub Copilot, Gemin | 1 | Codex, OpenCode | 1 | 1,439 tok |
| wjohns989/Muninn Local-first memory infrastructure for coding workflows: deterministic retrieval, explainab | 1 | Gemini CLI | 1 | 815 tok |
| contextpilot-dev/contextpilot Make every AI tool understand your codebase. Generate and sync .cursorrules, CLAUDE.md, co | 1 | Claude Code, GitHub Copilot, Cursor | 3 | 562 tok |
| Statutecontempt951/obsidian-llm-wiki Convert your Obsidian markdown vault into a six-persona MCP team for local LLM tools to pr | 1 | Claude Code | 1 | 702 tok |
| Deltologic/datadoe-mcp-gemini-cli This repository is a minimal example of using the DataDoe MCP server from Codex for Amazon | 1 | Gemini CLI | 1 | 368 tok |
| MMStudioCreations/skill-router The universal router has zero baked-in knowledge. Its routing table is assembled at runtim | 1 | Claude Code | 1 | 208 tok |
| azgem102-max/ai-project-context-kit Vendor-neutral shared project context kit for Codex, Claude Code, ChatGPT, Copilot, Gemini | 1 | Claude Code, Codex, GitHub Copilot, Gemini CLI, OpenCode | 4 | 541 tok |
| nomadicmehul/TheNightOps nightopsai.dev TheNightOps — Triage. Heal. Evolve. | 1 | Claude Code | 1 | 1,972 tok |
| PedroHenrique0713/brain-template A persistent, versioned brain for your AI tools — Obsidian vault template with shared memo | 1 | Claude Code | 1 | — |
| JHdehao/gemini-mem-v3 The final evolved version of gemini-mem | 1 | Claude Code, Codex, Gemini CLI, OpenCode | 9 | 2,923 tok |
| UKHO/UKHO.GitHubCopilot.ToolKit A repository of tools (instructions, prompts and agents) to help you on your GitHub Copilo | 1 | Claude Code, Codex, GitHub Copilot, OpenCode | 29 | 14,748 tok |
| msopariw/GitHubCopilotDemo Simple Todo app to demonstrate GitHub Copilot features: Custom Instructions, Skills, Custo | 1 | Claude Code, Codex, GitHub Copilot | 7 | 532 tok |
| akhildev-mj/copilot-workflow-starter akhildev.vercel.app Reusable GitHub Copilot setup with instructions, prompts, skills, and agents to enable tic | 1 | Claude Code, GitHub Copilot | 7 | 755 tok |
| coderandhiker/copilot-when-to-use-what Talk track on the current state of tools (prompts, instructions, agents, sub agents, etc) | 1 | Claude Code, Codex | 1 | — |
| jiamaozheng/awesome-claude-code | 1 | Claude Code, Codex, GitHub Copilot, OpenCode | 3 | 4,181 tok |
| ai-awesome/.claude | 1 | Claude Code | 1 | 620 tok |
| trsdn/github-copilot-cli Blueprint for customizing GitHub Copilot CLI — custom agents, instructions, skills, and MC | 1 | Codex, GitHub Copilot, OpenCode | 3 | 1,570 tok |
| InteractiveStrategies/github-copilot-presentation A hands-on demonstration of GitHub Copilot's AI-powered coding features including autocomp | 1 | GitHub Copilot | 1 | 472 tok |
| ichangyou/awesome-claude-code A curated list of awesome Claude Code tools, MCPs, skills, and resources | 1 | Claude Code | 1 | 950 tok |
| ArnelBukva/awesome-answer-engine-optimization arnelbukva.github.io Curated resources for Answer Engine Optimization (AEO) and Generative Engine Optimization | 1 | Claude Code | 1 | — |
| andrei-isvoran96/claude-skill-lab Collection of awesome claude stuff | 1 | Claude Code | 1 | 1,434 tok |
| KIMISKI33/awesome-copilot Community-contributed instructions, agents, skills, and configurations to help you make th | 1 | Claude Code, Codex, GitHub Copilot, OpenCode | 3 | 4,294 tok |
| MaximilianMayr94/skills Here you can find all my Copilot meta files (Skills, copilot instructions and scripts) | 1 | Claude Code, GitHub Copilot | 12 | 1,792 tok |
| zexion7873/copilot-setting Agentic context engineering for GitHub Copilot — agents route, skills execute, instruction | 1 | Claude Code, Codex, GitHub Copilot, OpenCode | 31 | 11,547 tok |
| alipajand/agent-context-doctor Audit agent context files like AGENTS.md, CLAUDE.md, .cursor/rules/*.mdc, .github/copilot- | 1 | Codex, OpenCode | 1 | 572 tok |
| xf-hq/vscode-workspaces Contains workspace files, Copilot/LLM/agent prompt files, instruction files, etc. for use | 1 | GitHub Copilot | 2 | 2,556 tok |
| Udhayaboopathi/A-complete-AI-Agent-Instruction-Library I stopped letting AI invent my architecture. I built an open-source AI Agent Instruction | 1 | Cursor | 1 | — |
| Alexmacapple/mcp-playbook-dsfr systeme-de-design.gouv.fr Serveur MCP pour le Design System de l'État français (DSFR v1.14) - Génération de composan | 1 | Claude Code | 1 | 2,795 tok |
| jacobpixleratgather/bitbucket-mcp npmjs.com | 1 | Claude Code, Codex, OpenCode | 2 | 3,261 tok |
| RayanZaki/laravel-starter My personal starter template for laravel api projects with production and development dock | 1 | GitHub Copilot | 1 | 1,518 tok |