43,712 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 agents7,642Claude Code6,648Data and AI3,676Backend and APIs3,504Languages3,399Planning3,222Git and workflow3,208Code review2,742Testing2,379Memory and context2,369Writing and docs2,323DevOps and cloud2,311Research2,290Frontend2,261Security2,025Productivity1,719
All Claude Code31,996 Codex23,310 OpenCode22,256 GitHub Copilot3,557 Gemini CLI1,917 Cursor1,739 Windsurf141 Kiro81
| Project | Stars | Configures | Files | Always loaded |
|---|---|---|---|---|
| Timmyy3000/skills | 2 | Codex, OpenCode | 1 | 240 tok |
| domini-code/ai-spec-builder ai-spec-builder.vercel.app ai-spec-builder | 2 | Claude Code | 6 | 624 tok |
| JobsHwang/skills Small, explicit, composable skills for software delivery and knowledge work. | 2 | Codex, OpenCode | 1 | 274 tok |
| BTreeMap/SKILLs A centralized library of reusable, project-agnostic Markdown skills for LLM coding agents. | 2 | Claude Code, Codex, OpenCode | 2 | 1,990 tok |
| smurzaliev/flutter-ai-skills | 2 | Claude Code | 1 | 1,828 tok |
| wangbinquan/skills A daily collection of useful harnesses | 2 | Claude Code, OpenCode | 21 | 1,999 tok |
| psd401/psd-claude-plugins Peninsula School District's comprehensive Claude Code plugin system with proven workflow a | 2 | Claude Code | 1 | 4,387 tok |
| dirkkok101/skills Skills for AI agents | 2 | Gemini CLI | 1 | 389 tok |
| forayconsulting/crawledcode DnD Emulator for Claude Code | 2 | Claude Code | 4 | 4,507 tok |
| amjadjibon/skills amjadjibon.github.io Dev Skills | 2 | Claude Code | 2 | 2,125 tok |
| ericfitz/skills Repository for my AI agent skills, organized as "plugins" and usable as a Claude or Codex | 2 | Claude Code | 1 | 1,099 tok |
| Muromi-Rikka/cc-learn claude-learn.pages.dev A Claude Code tutorial documentation site progressing from beginner to advanced | 2 | Claude Code, Codex, OpenCode | 5 | 1,332 tok |
| pmatos/skills Personal use skills | 2 | Claude Code, Codex, OpenCode | 2 | 2,067 tok |
| theshadow27/mcp-cli an MCP cli | 2 | Claude Code | 26 | 4,185 tok |
| MapleAI-Tech/skills An open-source collection of skills from Qingfeng Digital Technology | 2 | Claude Code | 1 | 443 tok |
| sanchitnis/SrujanaSangama | 2 | Claude Code, Codex, GitHub Copilot, Gemini CLI, OpenCode | 28 | 1,825 tok |
| dmarzzz/shape-rotator-field-kit shape-rotator-tools.vercel.app | 2 | Codex, OpenCode | 1 | 3,224 tok |
| mihaiserban/skills AI Skills I personally use for my day to day tasks | 2 | Codex, OpenCode | 1 | 755 tok |
| g-cqd/skills Engineering harness: 7 tiered subagents + 19 atomic Agent Skills (Swift/Apple-platform + l | 2 | Claude Code, Codex, OpenCode | 2 | 6,162 tok |
| swesmith/davila7__claude-code-templates.734b8a50 | 2 | Claude Code | 9 | 5,812 tok |
| hiadamhere/skills | 2 | Claude Code | 1 | 148 tok |
| holmconsulting-dk/claude-multiregnskab Claude Code plugin for working with multiregnskab.dk | 2 | Claude Code | 1 | — |
| polardb/polardb-pg-skills | 2 | Claude Code | 1 | 572 tok |
| kwasati/KARL | 2 | Codex, OpenCode | 1 | 600 tok |
| aicoder2048/story-writer | 2 | Claude Code | 13 | — |
| mvolkov83/skills | 2 | Claude Code | 1 | 1,577 tok |
| incognitojam/skills | 2 | Claude Code, Codex, OpenCode | 2 | 257 tok |
| gsd-build/docs | 2 | Codex, OpenCode | 1 | 245 tok |
| gsmlg-opt/claude-code | 2 | Claude Code, Codex, OpenCode | 5 | 13,454 tok |
| sangwonme/ClaudeCode-For-Researcher Useful claude code skills and hooks for awesome researchers | 2 | Claude Code | 1 | 359 tok |
| launch52-ai/flutter-template launch52.ai Template for Flutter mobile applications. | 2 | Claude Code | 1 | 1,349 tok |
| vivekkachhadiyatech/skills | 2 | Claude Code | 1 | 1,698 tok |
| DonggangChen/antigravity-agentic-skills antigravity-agentic-skills | 2 | Gemini CLI | 1 | 886 tok |
| nanocoai/nanoclaw-gmail NanoClaw Gmail channel integration | 2 | Claude Code | 31 | 948 tok |
| rudderlabs/terraform-provider-rudderstack | 2 | Claude Code | 1 | — |
| huqianghui/csa-ppt-plugin All-in-one presentation toolkit for Azure Cloud Solution Architects - Claude Code plugin w | 2 | Claude Code, Codex, GitHub Copilot, Cursor, OpenCode | 4 | 3,725 tok |
| sammasak/claude-code-skills Personal Claude Code skills, agents, and hooks | 2 | Claude Code | 1 | 604 tok |
| mathiasbourgoin/roster Personal AI agent roster + recruiter meta-agent for assembling project teams | 2 | Claude Code, Codex, OpenCode | 2 | 4,056 tok |
| cncoder/serverless-litellm Deploy the LiteLLM AI gateway to AWS EKS Fargate with one click and centrally manage acces | 2 | Claude Code | 1 | 1,124 tok |
| SebastianLuser/claude-code-arcane A Complete studio with agents and skills | 2 | Claude Code | 37 | 1,837 tok |
| lhohan/claude-code-plugins Hans' reusable Claude Code commands, skills, hooks, etc | 2 | Claude Code, Codex, OpenCode | 2 | 1,824 tok |
| MisterClean/ballot-endorsement-guide endorsement-frontend-production.up.railway.app Open-source, self-hostable ballot endorsement guide. | 2 | Claude Code | 2 | 316 tok |
| arunanksharan/claude-forge | 2 | Claude Code | 16 | — |
| oscal-compass/agentic-agile-authoring oscal-compass.dev Compliance authoring for OSCAL artifacts based on MCP Server and GenAI agentic solution wi | 2 | Claude Code | 1 | 1,620 tok |
| accionlabs/breezeai-claude-plugin Claude Code plugin for Breeze AI — functional graph, code graph, design analysis, and requ | 2 | Claude Code | 2 | 1,661 tok |
| byx-darwin/gitflow-cli Cross-platform Git engineering workflow orchestration framework: unifies GitHub, GitLab, a | 2 | Claude Code | 1 | 4,417 tok |
| Surya8991/AgentMaster Meta-orchestrator for AI coding agents. Auto-routes tasks to 41+ skills across 21 categori | 2 | Claude Code, GitHub Copilot | 2 | 13,776 tok |
| johnlanda/agentic-coding-starter-kit | 2 | Claude Code | 19 | 1,057 tok |
| jwpark-timbel/crew Intelligent multi-agent engineering crew for Claude Code with TDD enforcement | 2 | Claude Code | 1 | 1,012 tok |
| tom5610/llm-wiki | 2 | Claude Code | 4 | 4,678 tok |