24,815 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 agents8,505Claude Code6,886Git and workflow3,611Data and AI3,580Backend and APIs3,556Languages3,487Planning3,327Code review2,899Testing2,686Writing and docs2,480DevOps and cloud2,479Memory and context2,375Research2,323Frontend2,308Security2,172Project management1,965
All Claude Code32,517 Codex24,815 OpenCode23,733 GitHub Copilot3,719 Gemini CLI2,034 Cursor1,770 Windsurf202 Kiro114
| Project | Stars | Configures | Files | Always loaded |
|---|---|---|---|---|
| jonanderson10/enhanced-opencode-prompt-stack A provider-agnostic replacement for OpenCode's built-in system prompts with best practices | 3 | Codex, OpenCode | 1 | 576 tok |
| balsm-health/Balsm-AI Balsm AI — AI plugins, agents, and skills for healthcare workflows | 3 | Codex, OpenCode | 1 | 4,058 tok |
| romelllo/mipt-python-2026 | 3 | Claude Code, Codex, OpenCode | 2 | 1,984 tok |
| aaoa-dev/Sleak | 3 | Codex, OpenCode | 1 | 399 tok |
| datarobot-oss/datarobot-agent-tester Generate, test, and improve AGENTS.md files and AI coding skills via the DataRobot LLM Gat | 3 | Codex, OpenCode | 1 | 691 tok |
| cuongdev/indie-app-shipping Solo/indie playbook for shipping small iOS/macOS & Android apps — an AI agent skill pack f | 3 | Codex, OpenCode | 1 | 1,103 tok |
| Dhananjay625/dev-workflow Plan-first workflow for AI coding agents: cross-session memory via a project changelog, se | 3 | Codex, OpenCode | 1 | 2,408 tok |
| fco3lho/unlazier-ai OpenCode and Claude Code rules to eliminate lazy coding, behavioral principles, code quali | 3 | Claude Code, Codex, OpenCode | 2 | 1,425 tok |
| jn12-29/personal-agent-kit Branch-based profiles for personal AI coding agent instructions, skills, and configuration | 3 | Codex, OpenCode | 1 | 524 tok |
| dradoaica/cogov-a-sdlc Co-Governed Agentic SDLC (Software Development Life Cycle) | 3 | Claude Code, Codex, GitHub Copilot, Gemini CLI, Kiro, OpenCode, Windsurf | 14 | 368 tok |
| plasma-ai/dev Plasma development environments. | 3 | Claude Code, Codex, OpenCode | 2 | 6,120 tok |
| luabagg/agent-skills Collection of skills, tools and workflows | 3 | Claude Code, Codex, OpenCode | 2 | 323 tok |
| Eljaja/Harness-engineering | 3 | Codex, OpenCode | 1 | 502 tok |
| KrystianMarek/ai-assisted-development | 3 | Claude Code, Codex, OpenCode | 5 | 6,164 tok |
| Proxyfan/Proxyfan HTTP debugging proxy for inspecting, capturing, and modifying network traffic in real time | 3 | Claude Code, Codex, GitHub Copilot, OpenCode | 39 | 19,008 tok |
| duyet/kb the shared brain | 3 | Claude Code, Codex, OpenCode | 2 | 3,542 tok |
| vectra-ai-research/vectra-soc-agent-starter Starter pack for building an AI SOC analyst on top of Vectra AI — AGENTS.md + agent skills | 3 | Codex, OpenCode | 1 | 1,779 tok |
| Aviator-Coding/home-ops | 3 | Claude Code, Codex, OpenCode | 36 | 4,669 tok |
| serpbase-dev/serpbase-skill serpbase.dev Agent-portable SerpBase Google SERP API skill for Codex, Claude Code, opencode, OpenClaw, | 3 | Claude Code, Codex, OpenCode | 2 | 803 tok |
| abexiong/govafy-unsolicited-proposal-kit A plain-English playbook for small businesses writing federal unsolicited proposals under | 3 | Claude Code, Codex, OpenCode | 2 | 4,953 tok |
| luisalima/agent-policy-kit Repo-local operating policy and skills for coding agents | 3 | Codex, OpenCode | 1 | 185 tok |
| Affitor/agent-skills AI agent instructions for integrating Affitor affiliate tracking. Works with Claude Code, | 3 | Codex, OpenCode | 1 | 327 tok |
| abuxton/terraform-data-env | 3 | Claude Code, Codex, GitHub Copilot, OpenCode | 12 | 1,633 tok |
| Felpborges/projeto-prospecta | 3 | Claude Code, Codex, OpenCode | 2 | 2,643 tok |
| weante/city-salary City salary calculator Agent Skill: Calculates social security, housing provident fund, in | 3 | Codex, OpenCode | 1 | 1,400 tok |
| docxology/literature doi.org Python literature-review toolkit: unified search across arXiv, PubMed, Semantic Scholar, C | 3 | Codex, OpenCode | 1 | 2,907 tok |
| katmin2001/kenzy_agent_ai_template | 3 | Codex, OpenCode | 2 | 445 tok |
| andrejkaxz/Vanessa_for_AI Rules, Agent Skills, and a step catalog for Vanessa Automation for Codex, Claude Code, Ope | 3 | Claude Code, Codex, OpenCode | 2 | 887 tok |
| mpge/look-for-work-codex Proactive codebase analysis agent for Codex CLI — find the highest-impact improvements acr | 3 | Codex, OpenCode | 1 | 206 tok |
| TidyFactor/Cinematic tidyfactor.com Produce high-impact, scroll-driven product films and luxury Cinematic Landing pages. | 3 | Claude Code, Codex, OpenCode | 20 | 3,385 tok |
| tym83-ai/ai-workspace-system | 3 | Claude Code, Codex, OpenCode | 2 | 432 tok |
| Fisherd99/Fisherd99.github.io fisherd99.github.io My personal blog | 3 | Claude Code, Codex, OpenCode | 2 | 3,275 tok |
| XyrusCode/ai-sync Sync skills, memory, MCP servers and chat history across Claude Code, OpenCode, Codex, Gem | 3 | Codex, OpenCode | 1 | 1,012 tok |
| yyakubov-akam/akamai-functions-generator Generate Akamai Functions following prompt | 3 | Claude Code, Codex, GitHub Copilot, OpenCode | 3 | 2,053 tok |
| tomas-lp/hackIAthon-2026-nkc inu-app.inu-bdc.workers.dev | 3 | Claude Code, Codex, OpenCode | 3 | 209 tok |
| tjmustard/Hypergraph-Coding-Agent-Framework A rigorous, Spec-First framework for autonomous software engineering. Solves the Specifica | 3 | Claude Code, Codex, Gemini CLI, OpenCode | 75 | 5,009 tok |
| joshka/practice | 3 | Codex, OpenCode | 1 | 1,491 tok |
| serenashenn3-art/wechat-forensic-pro wechat-forensic-pro | 3 | Claude Code, Codex, Cursor, Gemini CLI, OpenCode | 4 | 13,264 tok |
| viaduct-dev/batteries-included Viaduct template project with React, GraphQL, and Supabase | 3 | Claude Code, Codex, OpenCode | 2 | 541 tok |
| xrcodexcode/xr_node Personal wiki | 3 | Claude Code, Codex, Gemini CLI | 5 | 6,109 tok |
| jsohi/app-trading-engine Aeron Cluster + SBE + Artio FIX Trading Engine | 3 | Claude Code, Codex, OpenCode | 8 | 7,949 tok |
| cmu-delphi/exploration-tooling tools for evaluating and exploring forecasters | 3 | Codex, OpenCode | 1 | 3,026 tok |
| cicikat/PresenceKit-mobile Mobile client for PresenceKit, providing a companion experience on Android. | 3 | Claude Code, Codex, OpenCode | 2 | 4,697 tok |
| Adios94/megabonk-game MegaBonk 3D Roguelike Survivor - Three.js game (playable in browser) | 3 | Claude Code, Codex, Cursor, OpenCode | 7 | 1,464 tok |
| krahets/krahets.github.io krahets.com Personal website of Yudong Jin (@krahets) | 3 | Claude Code, Codex, OpenCode | 2 | 3,318 tok |
| rahult18/prism-mem Post-session knowledge crystallizer for AI coding agents | 3 | Claude Code, Codex, Cursor, OpenCode | 3 | 1,470 tok |
| breim/bob-the-constructor-md Behavioral guardrails for coding agents that treat specs as contracts. | 3 | Codex, OpenCode | 1 | 1,562 tok |
| raptorxde/LaunchProof-Web-Audit Cross-agent website launch-readiness audit skill for Codex, Claude Code, Cursor, and AI co | 3 | Claude Code, Codex, OpenCode | 2 | 228 tok |
| Amartuvshins0404/clean-code-skills Language-agnostic clean-code skill package for AI coding agents (Claude Code, Codex, Curso | 3 | Claude Code, Codex, GitHub Copilot, Gemini CLI, OpenCode | 5 | 2,135 tok |
| atmosware/cognia-agents | 3 | Claude Code, Codex, OpenCode | 33 | 794 tok |