23,761 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 agents8,530Claude Code6,887Git and workflow3,618Data and AI3,582Backend and APIs3,558Languages3,485Planning3,325Code review2,903Testing2,691DevOps and cloud2,482Writing and docs2,481Memory and context2,373Research2,322Frontend2,310Security2,179Project management1,971
All Claude Code32,523 Codex24,842 OpenCode23,761 GitHub Copilot3,723 Gemini CLI2,038 Cursor1,771 Windsurf201 Kiro116
| Project | Stars | Configures | Files | Always loaded |
|---|---|---|---|---|
| AlexWangDa/s3-mcp-server-java The MCP Server based on the S3 protocol can perform operations on Amazon S3 and other S3-c | 8 | Codex, OpenCode | 1 | 560 tok |
| kimgh06/Thask thask.kimgh06.com Thask – Linked Graph Risk Manager for Engineering Teams | 8 | Claude Code, Codex, OpenCode | 2 | 1,471 tok |
| sardine-ai/mcp-server-manager | 8 | Claude Code, Codex, OpenCode | 5 | 5,855 tok |
| armanas/froglet A protocol and node for a bot economy — bots create, publish, discover, buy, sell, and com | 8 | Claude Code, Codex, OpenCode | 2 | 1,954 tok |
| emercoin/emer-ai-tools api.steledger.com Archived. The original Emercoin agent gateway. The emercoin/core image is built by emercoi | 8 | Claude Code, Codex, OpenCode | 2 | 1,848 tok |
| Kynlos/Obsidian-MCP An Obsidian MCP for Agentic Coding Agents | 8 | Codex, OpenCode | 1 | 4,816 tok |
| nbiish/mcp-calc-tools | 8 | Codex, OpenCode | 1 | 3,864 tok |
| BigCactusLabs/dead-letter pypi.org Convert .eml and .mbox email, including Gmail Takeout, to Markdown with YAML front matter | 8 | Codex, OpenCode | 1 | 2,219 tok |
| Aboudjem/ui-ux-suite ESLint for design. Finds the exact line, the measured wrong value, and the exact fix. 12 w | 8 | Claude Code, Codex, OpenCode | 2 | 5,395 tok |
| Chili-Piper/mcp-assets chilipiper.com Official Chili Piper Skills and ChatGPT GPTs for the Chili Piper MCP — meeting diagnostics | 8 | Codex, OpenCode | 1 | 857 tok |
| bezata/kObsidian Filesystem-first MCP server for Obsidian vaults with an LLM-Wiki layer on top. | 8 | Claude Code, Codex, OpenCode | 2 | 928 tok |
| bricerising/enterprise-software-playbook bricerising.github.io Composable agent skills (playbooks) for building enterprise-grade web services — covering | 8 | Codex, OpenCode | 1 | 445 tok |
| nagameTW/humanizer-zh-tw Skill for removing AI writing traces, enhanced for Taiwan. Covers 46 patterns, including d | 8 | Codex, OpenCode | 1 | 1,295 tok |
| chrisgagne/grounded-forge Project once, retrieve distillations, create tools: a pre-loading retrieval architecture a | 8 | Claude Code, Codex, OpenCode | 4 | 5,455 tok |
| pitlane-ai/pitlane Race a baseline vs a skill or MCP on real tasks. Hard checks show if it got better, faster | 8 | Codex, OpenCode | 1 | 287 tok |
| teamtinvio/jaz-ai jaz.ai Fastest ledger for agents. Jaz accounting plugins, skills, MCP server, and CLI for Claude, | 8 | Claude Code, Codex, OpenCode | 1 | 643 tok |
| mgiovani/cc-arsenal 45 production-grade AI agent skills for real dev workflows. Code review, shipping, docs, g | 8 | Claude Code, Codex, OpenCode | 2 | 4,516 tok |
| tartinerlabs/skills Claude Code skills for git workflows, GitHub automation, security audits, code refactoring | 8 | Codex, OpenCode | 1 | 2,810 tok |
| hani-q/qstack A personal stack of agent skills for reviewable planning, disciplined execution, and durab | 8 | Codex, OpenCode | 1 | 384 tok |
| Victory-7291/project-scaffold-setup-skills Reusable agent skills for scaffolding C++ and embedded projects | 8 | Codex, OpenCode | 1 | 995 tok |
| littlebearapps/pitchdocs littlebearapps.com Turn any codebase into professional, marketing-ready GitHub documentation — powered by AI | 8 | Claude Code, Codex, GitHub Copilot, Cursor, Gemini CLI, OpenCode | 5 | 6,155 tok |
| DmitriyYukhanov/claude-plugins Personal collection of Claude Code plugins and skills: development workflows, cross-model | 8 | Codex, OpenCode | 1 | 1,217 tok |
| Elnora-AI/elnora-linear Linear workspace for Claude Code — search, bulk edit, agents, and a config-driven curator. | 8 | Claude Code, Codex, OpenCode | 1 | 1,807 tok |
| Cubenest/rrweb-stack cubenest.in Two OSS products on one rrweb substrate: tracelane (self-contained HTML test-failure repla | 8 | Claude Code, Codex, OpenCode | 2 | 2,680 tok |
| ivanostanin/lucius-mcp ivanostanin.github.io A feature-rich Model Context Protocol (MCP) server and CLI for Allure TestOps TMS. | 8 | Codex, OpenCode | 1 | 374 tok |
| sphinx-contrib/mcp sphinx-contrib.github.io Sphinx extension for documenting MCP tools, prompts, resources and resource templates. | 8 | Claude Code, Codex, OpenCode | 2 | 755 tok |
| V-Songbird/razor YAGNI checks for Claude Code and Codex: reconsider dependencies, file growth and unnecessa | 8 | Claude Code, Codex, OpenCode | 2 | 1,232 tok |
| ABMJ/tenable-sc-mcp-server Production-ready MCP server for Tenable Security Center with intelligent caching. 90% toke | 8 | Codex, OpenCode | 1 | 1,269 tok |
| jpwang1208/find-skills-x AI-powered skill discovery tool for finding and recommending agent skills across 8+ platfo | 8 | Codex, OpenCode | 1 | 229 tok |
| trentisiete/endy npmjs.com Multi-agent control plane for coding CLIs (Codex, OpenCode, CommandCode, Hermes) with one | 8 | Codex, OpenCode | 1 | 3,029 tok |
| vibestackdev/vibe-stack vibestack0.gumroad.com 29 .mdc architecture rules that prevent AI coding assistants from hallucinating insecure a | 8 | Claude Code, Codex, OpenCode | 2 | 2,642 tok |
| hslee16/Archy Architectural sensor for Python codebases - keeps structure honest under AI-assisted devel | 8 | Claude Code, Codex, OpenCode | 2 | 4,029 tok |
| kazakago/cc-mascot kazakago.github.io A desktop mascot that speaks responses from AI coding agents. | 8 | Codex, OpenCode | 1 | 1,341 tok |
| ojamin/okf-loom Toolkit for turning Markdown docs bundles into validated OKF knowledge graphs, with a loca | 8 | Claude Code, Codex, OpenCode | 2 | 877 tok |
| Supersynergy/agent-token-saver Cuts what your coding assistant spends per task, and shows you the numbers. Works with Cod | 8 | Claude Code, Codex, OpenCode | 2 | 474 tok |
| ehurrn/newsroom-extension AI investigative journalism toolkit — OSINT, FOIA engineering, corporate veil piercing, li | 8 | Codex, Gemini CLI, OpenCode | 2 | 2,571 tok |
| tb0hdan/wass-mcp Web Application Security Scanner MCP Server | 8 | Claude Code, Codex, Gemini CLI, OpenCode | 3 | 191 tok |
| snyk/saw-mcp | 8 | Claude Code, Codex, OpenCode | 2 | 1,968 tok |
| yashau/dexgram Lightweight Telegram bridge for Codex on Windows | 8 | Claude Code, Codex, OpenCode | 2 | 1,834 tok |
| Trenza1ore/GitCode-API gitcode-api.readthedocs.io Easy-to-use Python SDK for the GitCode REST API. Providing a built-in CLI tool and optiona | 8 | Claude Code, Codex, OpenCode | 2 | 3,160 tok |
| art9mid/arc-skill AI agent skill for scaffolding production-ready React Native (Expo) projects. Architecture | 8 | Claude Code, Codex, Cursor, OpenCode | 4 | 2,221 tok |
| tsnAnh/flutter-agentic-starter The production-ready Flutter starter built for Claude Code, Cursor, Codex, and modern AI c | 8 | Claude Code, Codex, OpenCode | 2 | 3,715 tok |
| Bundl-AI/bundl-cli bundl.ai Bundl - The open corpus standard for AI employees. Define how your company works once. Eve | 8 | Claude Code, Codex, OpenCode | 2 | 306 tok |
| alficlaw01/claw3d claw3d-office-alfi1.vercel.app 3D AI agent office — forked from iamlukethedev/Claw3D | 8 | Codex, OpenCode | 1 | 129 tok |
| classicchins/compounding-marketing cmo-skills.com A Claude Code + ChatGPT/Codex plugin for world-class Marketing & GTM workflows | 8 | Claude Code, Codex, OpenCode | 2 | 8,473 tok |
| DropFan/claude-code-plugins Claude Code plugins collection - custom plugins and curated favorites. chat-saver/skill-ex | 8 | Claude Code, Codex, OpenCode | 2 | 1,569 tok |
| Apptware-Product-Labs/markr apptware.com Fast Markdown preview for VS Code & Cursor — GitHub rendering, live TOC, Mermaid, multi-ta | 8 | Claude Code, Codex, Cursor, OpenCode | 3 | 1,265 tok |
| sfc-gh-myoung/ai_coding_rules One universal AI coding rule set for all AI assistants, IDEs, and agents — portable, intel | 8 | Codex, OpenCode | 1 | 711 tok |
| markpasternak/canvas-drop canvas-drop.com Turn web artifacts into tools your team can use. Publish from files or an AI agent, contro | 8 | Claude Code, Codex, OpenCode | 2 | 4,677 tok |
| 777genius/infinity-context Reliable memory and context infrastructure for AI coding agents: source-backed facts, revi | 8 | Codex, OpenCode | 1 | 284 tok |