43,652 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 agents7,588Claude Code6,636Data and AI3,676Backend and APIs3,496Languages3,402Planning3,219Git and workflow3,187Code review2,745Testing2,374Memory and context2,364DevOps and cloud2,310Writing and docs2,309Research2,295Frontend2,261Security2,021Productivity1,715
All Claude Code31,998 Codex23,222 OpenCode22,170 GitHub Copilot3,550 Gemini CLI1,918 Cursor1,738 Windsurf137 Kiro80
| Project | Stars | Configures | Files | Always loaded |
|---|---|---|---|---|
| samtalki/AgentREPL.jl STDIO-based MCP server for persistent Julia REPL sessions, eliminating TTFX overhead for A | 7 | Claude Code | 1 | 3,856 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 | 11,505 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 |
| pedrobraiti/vizier-trading-skill Vizier - the decision-making brain of an agentic-trading stack. A Claude Code skill that r | 7 | Claude Code | 1 | 1,449 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 |
| vibeknow/cli vibeknow.ai Official VibeKnow CLI — turn documents and URLs into professional videos in one command. B | 7 | Codex, OpenCode | 1 | 5,873 tok |
| samzong/agent-brains Personal agent brain catalog for coding agents: AGENTS.md, SOUL.md, MEMORY.md, skills, wor | 7 | Codex, OpenCode | 1 | 547 tok |
| sichengchen/apple-calendar-cli Access Apple Calendar through CLI. Fully in Swift via EventKit (not Apple Script). | 7 | Claude Code | 3 | — |
| 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 |
| stewie-sh/agent-crystallize Local-first checkpoints and crystals for long-running AI coding agent sessions. | 7 | Claude Code, Codex, OpenCode | 2 | 467 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 |
| cmeans/mcp-synology pypi.org Connect any MCP client to your Synology NAS. Browse, search, and manage files, monitor sy | 7 | Claude Code | 1 | 2,881 tok |
| chinkan/RustFox A Rust-based Telegram AI assistant powered by OpenRouter LLM with built-in sandboxed tools | 7 | Claude Code | 1 | 4,170 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 |
| yeisonrestrepo/code-conductor Spec-first workflow engine for Claude Code: /cc-spec → /cc-plan → /cc-implement, with auto | 7 | Claude Code | 5 | 1,228 tok |
| sparklingneuronics/sparkling-skills sparklingneuronics.ai Give Claude Code a second opinion — run OpenAI Codex & Google Gemini from inside Claude Co | 7 | Claude Code | 1 | 1,191 tok |
| jassics/awesome-claude-security jassics.github.io Claude code skills, agents, memory, profiles to accomplish cybersecurity tasks, projects, | 7 | Claude Code | 1 | 848 tok |
| LH8PPL/core-memory-kit Persistent per-project memory for Claude Code, Kiro, Cursor & Codex - plain markdown commi | 7 | Claude Code | 1 | 26,397 tok |
| davebream/claude-of-alexandria Claude plugin for rigorous biblical study. TDD-built to prevent AI failures: psychologizin | 7 | Claude Code | 2 | 5,437 tok |
| skymanbp/cc-memory Persistent memory for Claude Code. Survives compaction and session boundaries: anti-patch | 7 | Claude Code | 1 | 38,857 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 | 13,768 tok |
| ionos-cloud/ionoscloud-mcp This project implements an MCP server to interact with ionos cloud resources. | 7 | Claude Code | 1 | 7,245 tok |
| decantr-ai/decantr decantr.ai Decantr AI design intelligence layer for AI-generated web applications | 7 | Claude Code | 1 | 8,678 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 |
| 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 | 11,159 tok |
| tj-smith47/cfgd Declarative, GitOps-inspired, shareable tooling and machine configurations. | 7 | Claude Code | 1 | 1,410 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 |
| beetlebugorg/tekmetric-mcp beetlebugorg.github.io Ask questions about your Tekmetric shop data using natural language. Get instant answers a | 7 | Claude Code | 1 | 385 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 |
| uselayout/cli layout.design Layout CLI + MCP server — design system context for AI coding agents | 7 | Claude Code | 3 | 266 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 |
| sroberts/plumbline Repo-level AI coding readiness assessment, in Go. Maps a repository to its level on the AI | 7 | Claude Code | 1 | 2,968 tok |
| gosha70/code-copilot-team gosha70.github.io Enforceable, provider-neutral harness for multi-agent AI coding: spec-driven workflow, cro | 7 | Claude Code, GitHub Copilot | 20 | 31,183 tok |
| aycanozarpaci/seo-pro-max-skill Production-grade SEO setup skill for AI coding agents (Claude Code, Cursor, Windsurf, Clin | 7 | GitHub Copilot | 1 | 20,549 tok |
| popoloni/non_deterministic_sw_eng Companion repository for Non-Deterministic Software Engineering book by Enrico Papalini | 7 | GitHub Copilot | 3 | 782 tok |
| ishandutta2007/claude-skills-by-karpathy a viral set of behavioral guidelines popularized by AI researcher Andrej Karpathy to fix t | 7 | Claude Code | 1 | 524 tok |
| cekura-ai/cekura-skills Claude Plug-Ins & Skills for Cekura | 7 | Claude Code, Gemini CLI | 2 | 14,952 tok |
| jnorthrup/TrikeShed my (++Bike)shed ideas | 7 | Codex, OpenCode | 1 | 122 tok |
| sahajamit/figma-cli figma cli | 7 | Claude Code | 1 | 1,986 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 |