23,196 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 agents7,571Claude Code6,627Data and AI3,684Backend and APIs3,492Languages3,401Planning3,221Git and workflow3,179Code review2,740Testing2,368Memory and context2,365Writing and docs2,309DevOps and cloud2,308Research2,298Frontend2,256Security2,015Productivity1,715
All Claude Code31,984 Codex23,196 OpenCode22,145 GitHub Copilot3,551 Gemini CLI1,917 Cursor1,736 Windsurf133 Kiro79
| Project | Stars | Configures | Files | Always loaded |
|---|---|---|---|---|
| belt-sh/cli belt — the cloud platform cli for ai agents | 7 | Claude Code, Codex, OpenCode | 3 | 478 tok |
| 8090-inc/software-factory-plugin Software Factory plugin for coding agents | 7 | Codex, OpenCode | 1 | 493 tok |
| raheb77/saudi-open-data-mcp MCP server for reliable AI access to curated Saudi official open data. | 7 | Codex, OpenCode | 1 | 639 tok |
| Dellety/vision-mcp-for-ds Vision MCP for DS — an MCP Server that adds visual capabilities to DeepSeek agents | 7 | Codex, OpenCode | 1 | 2,836 tok |
| saltyskip/rift riftl.ink Deep links for humans and agents. Cross-platform mobile deep linking with AI-readable cont | 7 | Claude Code, Codex, OpenCode | 2 | 7,790 tok |
| christoph-hart/hise_mcp_server A MCP Server for AI Agents that verifies API methods & component properties | 7 | Codex, OpenCode | 1 | 1,536 tok |
| KyaniteLabs/Epoch kyanitelabs.github.io Time estimation MCP server for AI agents: PERT, COCOMO II, Monte Carlo, sprint forecasting | 7 | Claude Code, Codex, GitHub Copilot, Cursor, OpenCode, Windsurf | 5 | 2,396 tok |
| gaelic-ghost/socket macOS Agent Workflows, Research, & Experiments | 7 | Codex, OpenCode | 1 | 741 tok |
| Amey-Thakur/AI-SKILLS amey-thakur.github.io Plug-and-play skills and prompts for every AI coding agent | 7 | Claude Code, Codex, OpenCode | 2 | 1,738 tok |
| Bannovich/arabic-word-production Deterministic Agent Skill and plugin for Arabic-first and bilingual Microsoft Word DOCX pr | 7 | Codex, OpenCode | 1 | 220 tok |
| buildinternet/releases releases.sh Open product release note registry, indexed and made for agents. Get recent product change | 7 | Claude Code, Codex, OpenCode | 6 | 11,476 tok |
| mumez/pharo-agentic-browser A multi-agent AI coding workspace and orchestration environment for Pharo Smalltalk, featu | 7 | Codex, OpenCode | 1 | 1,742 tok |
| BjornMelin/dev-skills AgentSkills library: reusable skills for AI coding agents (AI SDK, Codex, LangGraph, Supab | 7 | Codex, OpenCode | 1 | 4,549 tok |
| Wolfe-Jam/faf-mcp faf.one Persistent Project Context for Cursor, IDEs and VS Code — IANA-registered .faf format · 29 | 7 | Claude Code, Codex, GitHub Copilot, Cursor, Gemini CLI, OpenCode | 5 | 2,474 tok |
| widnyana/eyay-toolkits Agents don’t behave, they swarm. Skills and plugins slot in mid flight, and somehow the wh | 7 | Codex, OpenCode | 1 | 4 tok |
| sgomez/developer-skills Unattended PRD delivery for Claude Code | 7 | Claude Code, Codex, OpenCode | 3 | 1,679 tok |
| athal7/dotfiles | 7 | Codex, OpenCode | 1 | 1,021 tok |
| hutzelmann/thesis-proposal-skills skills.sh Write a convincing thesis proposal with support from AI | 7 | Claude Code, Codex, OpenCode | 3 | 4,668 tok |
| TAKEOFF69/codex-skills-kit Task-typed prompt-engineering Agent Skills for OpenAI Codex. | 7 | Codex, OpenCode | 1 | 714 tok |
| rogerdigital/vault-inspector community.obsidian.md An Obsidian vault health checker for finding broken links, orphan attachments, duplicate f | 7 | Claude Code, Codex, OpenCode | 2 | 2,410 tok |
| sodam-ai/SoDam-Design-Kit Claude Code design automation plugin that converts Figma designs into shadcn/ui code and c | 7 | Codex, OpenCode | 1 | 550 tok |
| cyanheads/eur-lex-mcp-server npmjs.com Search EU legislation, CJEU case law, and treaties; traverse the CELLAR relationship graph | 7 | Claude Code, Codex, OpenCode | 2 | 11,822 tok |
| zhurong2020/pyobfus pyobfus.readthedocs.io AST-based Python obfuscator with reverse stack-trace mapping — obfuscate before shipping a | 7 | Claude Code, Codex, OpenCode | 2 | 29,028 tok |
| Devlaner/loomy loomy.devlane.dev Loomy is an open-source collaborative whiteboard. Create infinite boards, invite your team | 7 | Claude Code, Codex, GitHub Copilot, Gemini CLI, OpenCode | 4 | 4,094 tok |
| thuandiep1707/codex-harness-javascript Multi-agent harness for OpenAI Codex with Jira-backed workflows, pause/resume, progressive | 7 | Claude Code, Codex, OpenCode | 4 | 5,397 tok |
| nikzlabs/shipit ship-it.ai Self-hosted, chat-driven IDE for running coding agents through your real engineering loop | 7 | Claude Code, Codex, OpenCode | 18 | 10,921 tok |
| DikshitRJ/quickfill-mcp npmjs.com Instant Generative UI MCP Server for AI Agents. Turn static AI chats into live, hot-reload | 7 | Claude Code, Codex, OpenCode | 2 | 764 tok |
| anivar/jest-skill skills.sh AI agent skill for Jest 29/30 — 28 rules: mocks, async, timers, snapshots, CI. Works with | 7 | Codex, OpenCode | 1 | 5,070 tok |
| openma-ai/backchat backchat.openma.dev Local-first desktop workspace for ACP agents—DeepSeek Harness, Claude Code, Codex, Gemini | 7 | Claude Code, Codex, OpenCode | 2 | 988 tok |
| MidnightDarling/collate Chinese-language literature OCR proofreading and reading pipeline for historical researche | 7 | Claude Code, Codex, Gemini CLI, OpenCode | 2 | 9,613 tok |
| Marcelo-Barella/Cursor-CA-Orchestrator | 7 | Codex, OpenCode | 1 | 732 tok |
| tonyghiani/ai-essentials My personal AI essentials for rules, skills. subagents and more. | 7 | Claude Code, Codex, OpenCode | 1 | 1,354 tok |
| jeunecraack/talisman-skill Talisman — turn a codebase into a beautiful, brand-styled PDF guide (LaTeX→PDF). An agent | 7 | Codex, OpenCode | 1 | 865 tok |
| jnorthrup/TrikeShed my (++Bike)shed ideas | 7 | Codex, OpenCode | 1 | 122 tok |
| clawnify/greybeard Behavioral guidelines for AI coding agents — drop into CLAUDE.md / AGENTS.md to reduce com | 7 | Claude Code, Codex, GitHub Copilot, Gemini CLI, OpenCode | 4 | 14,743 tok |
| moberghr/mtk-agent-toolkit moberghr.github.io A Claude Code plugin that enforces your team's coding standards, security policies, and re | 7 | Claude Code, Codex, OpenCode | 60 | 5,884 tok |
| bitflight-devops/skilllint The best platform agnostic Linter for AI agent plugins and skills — validates structure, f | 7 | Claude Code, Codex, OpenCode | 6 | 3,399 tok |
| ajhcs/healthcare-data-mcp 18 local MCP servers for public healthcare market intelligence: facilities, ownership, qua | 7 | Codex, OpenCode | 1 | 54 tok |
| aws-geospatial/amazon-location-agent-context Amazon Location Service context for AI coding assistants — available as Kiro Powers, Claud | 7 | Claude Code, Codex, OpenCode | 2 | 2,436 tok |
| alexmond/alexmskills alexmond.org A curated Claude Code plugin marketplace of reusable, self-improving skills and agents — e | 7 | Claude Code, Codex, OpenCode | 3 | 6,132 tok |
| microsoft/github-advisory-mcp MCP tools for semantic search in github/advisory-database | 7 | Codex, OpenCode | 1 | 1,159 tok |
| sumithr/sumo-qa pypi.org MCP server that brings senior-QA discipline to AI coding assistants — test planning, TDD, | 7 | Claude Code, Codex, GitHub Copilot, OpenCode | 9 | 2,294 tok |
| essentialproject/essential-view-builder-mcp This MCP (Model Context Protocol) server provides tools and resources for building high-qu | 7 | Claude Code, Codex, Gemini CLI, OpenCode | 3 | 373 tok |
| SethGame/mcp_flexsim mcp server for FlexSim | 7 | Codex, OpenCode | 1 | 700 tok |
| pwelty/mcp_trilium paulwelty.com 🌳 Model Context Protocol (MCP) server for Trilium Notes - Connect your knowledge base to | 7 | Claude Code, Codex, OpenCode | 2 | 181 tok |
| jazzsequence/5eMCP | 7 | Claude Code, Codex, OpenCode | 2 | 3,626 tok |
| u33pk/mitmproxy-mcp | 7 | Claude Code, Codex, OpenCode | 2 | 4,470 tok |
| sandraschi/filesystem-mcp FastMCP 3.2.0+ server plus webapp for comprehensive file system operations, Git repository | 7 | Claude Code, Codex, GitHub Copilot, Cursor, OpenCode, Windsurf | 8 | 1,627 tok |
| GangGreenTemperTatum/fbdl-mcp facebook.com MCP Server for Meta Hackers, use agents to create FBDL scripts. FBDL is a tool designed to | 7 | Claude Code, Codex, OpenCode | 5 | 3,464 tok |
| venikman/fpf-memory mcp.fpf.sh Hosted MCP server + slim wiki projection of the First Principles Framework (FPF) by Anatol | 7 | Claude Code, Codex, OpenCode | 2 | 2,838 tok |