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 |
|---|---|---|---|---|
| k-vaca/prompt-engineering-skill Research-grounded Agent Skill for writing professional LLM prompts — matches technique to | 8 | Codex, OpenCode | 1 | 158 tok |
| NITISH-R-G/hackerrank-orchestrate-skills hackerrank.com Unofficial community toolkit for HackerRank Orchestrate: 8 agent skills (Claude Code, Code | 8 | Claude Code, Codex, GitHub Copilot, Gemini CLI, OpenCode | 4 | 736 tok |
| mhenke/john-ousterhout-skills Strategic software design guidelines for AI coding agents. 15 behavioral rules + critique/ | 8 | Claude Code, Codex, OpenCode | 2 | 2,307 tok |
| nirholas/metaplex-agent-mcp nirholas.github.io Deploy AI agents on-chain into the Metaplex Agent Registry on Solana: one atomic transacti | 8 | Codex, OpenCode | 1 | 475 tok |
| nirholas/x402-mcp-commerce nirholas.github.io MCP server that gives Claude/GPT agents commerce tools — each tool call pays an upstream x | 8 | Claude Code, Codex, OpenCode | 2 | 519 tok |
| Quidli/connect-mcp connect.quid.li MCP server for agent identity & reputation: resolve social handles to wallet addresses, sc | 8 | Claude Code, Codex | 1 | — |
| iamwaqargulzar/Marketing-Agent-OS Universal, cross-platform marketing agent skill system with 238 skills for SEO, GEO, AEO, | 8 | Claude Code, Codex, OpenCode | 2 | 263 tok |
| open-edge-platform/skills Repository for Open Edge Platform Agent Skills | 8 | Claude Code, Codex | 38 | — |
| snyk-labs/snyk-vulnbench vulnbench.com A benchmark harness for measuring how AI coding agents find and fix security vulnerabiliti | 8 | Claude Code, Codex, OpenCode | 12 | 3,693 tok |
| porchetthub/-https-github.com-DietrichGebert-ponytail | 8 | Codex, GitHub Copilot, OpenCode | 2 | 1,117 tok |
| dsvi-b/corretor-enem Corretor de redação ENEM (5 competências) agnóstico de agent, calibrado em 11.147 redações | 8 | Claude Code, Codex, OpenCode | 3 | 1,416 tok |
| sharpninja/McpServer sharpninja.github.io | 8 | Claude Code, Codex, GitHub Copilot, OpenCode | 3 | 6,730 tok |
| headlinearena/headlinearena-agent-plugin headlinearena.com Skills for integrating AI agents with HeadlineArena | 8 | Claude Code, Codex, OpenCode | 2 | 1,536 tok |
| Vollkorn-Games/godot-mcp MCP server for Godot — tools for scene building, scripting, interactive game control, stat | 8 | Claude Code, Codex | 4 | 936 tok |
| tambo-labs/charming-mcp usecharming.com Charming MCP server — generate and host interactive web apps via MCP | 8 | Codex, Gemini CLI, OpenCode | 2 | 2,759 tok |
| yuluod/AllSessions A local-first desktop workspace for browsing, searching, and managing Codex, Claude Code, | 8 | Codex, OpenCode | 1 | 2,070 tok |
| olgasafonova/gleif-mcp-server MCP server for GLEIF LEI (Legal Entity Identifier) database access | 8 | Claude Code, Codex, OpenCode | 2 | 413 tok |
| ddpie/lark-mcp-on-agentcore A hosted remote MCP service for AI agents to operate Feishu, reusing lark-cli's 200+ tools | 8 | Claude Code, Codex, OpenCode | 2 | 1,848 tok |
| menaje/codex-mcp-bridge-for-chatgpt A policy-enforcing Streamable HTTP MCP bridge from ChatGPT to local Codex. | 8 | Codex, OpenCode | 1 | 541 tok |
| minwoo19930301/korea-ecommerce-integrated-channel-mcp MCP server for handling product listing, editing, sales suspension, and deletion across mu | 8 | Codex, OpenCode | 1 | 1,345 tok |
| rebel0789/Memory-Recall npmjs.com Local-first repo memory and context for coding agents. | 8 | Claude Code, Codex, GitHub Copilot, Gemini CLI, OpenCode | 4 | 1,717 tok |
| supremehui/-Auto-Accounting An AI-powered Android automated expense-tracking tool | 8 | Claude Code, Codex, Gemini CLI, OpenCode | 3 | 2,264 tok |
| Kuniwak/puml-parallel Composing multiple PlantUML state diagrams in parallel with synchronization events | 8 | Claude Code, Codex, Gemini CLI, OpenCode | 4 | 8 tok |
| jleechanorg/agent-orchestrator-ts composio.dev Agentic orchestrator for parallel coding agents — plans tasks, spawns agents, and autonom | 8 | Claude Code, Codex, Gemini CLI, OpenCode | 16 | 11,011 tok |
| slayer/gcon GCP TUI Console | 8 | Claude Code, Codex | 12 | 4,490 tok |
| thisismygitrepo/machineconfig A stack manager: a package manager, work orchestrator, dotfile manager, secrets manager, c | 8 | Claude Code, Codex, GitHub Copilot | 4 | 1,598 tok |
| SailfinIO/sailfin sfn.dev Self-hosted systems programming langauge with an effect system and compile-time capability | 8 | Claude Code, Codex, GitHub Copilot, Gemini CLI, OpenCode | 42 | 11,248 tok |
| sempods/sempods-kotlin sempods.org sempods reference implementation for the JVM — pod server, identity service, hosted MCP, c | 8 | Claude Code, Codex, GitHub Copilot, Gemini CLI, OpenCode | 6 | 5,174 tok |
| GregoryHo/arcforge Skill-based workflow engine for AI coding agents: planning, TDD, worktree orchestration, a | 8 | Claude Code, Codex, OpenCode | 7 | 876 tok |
| IntelliTect/EssentialCSharp.Web essentialcsharp.com The web side of essentialcsharp.com | 8 | Claude Code, Codex, GitHub Copilot | 4 | 2,331 tok |
| hybridlabor-api/bdb-dev-optimized-agent-skills A Curated AI AGENT OS – Optimized agent skills and add-ons like memB, OpenWiki, Heimdall T | 7 | Claude Code, Codex, GitHub Copilot, Gemini CLI, OpenCode | 7 | 2,961 tok |
| GrillerGeek/idd-framework A process framework for teams building software with AI coding agents. Replaces Epics/Feat | 7 | Claude Code, Codex, GitHub Copilot, OpenCode | 3 | 4,891 tok |
| shofer-dev/claude-code-live-memory shofer.dev A cheap, always-on model that learns your repo — so your agent stops re-reading it. | 7 | Claude Code, Codex, OpenCode | 2 | 1,257 tok |
| dominodatalab/domino-claude-plugin Deprecated: moved to dominodatalab/domino-ai-plugin | 7 | Claude Code, Codex, OpenCode | 1 | 5,355 tok |
| N0zoM1z0/touhou-university n0zom1z0.github.io 幻想鄉立東方大學 — an unofficial Touhou Project fan university website | 7 | Codex, OpenCode | 1 | 1,132 tok |
| MaxQian888/cognia-next | 7 | Claude Code, Codex, GitHub Copilot, OpenCode | 77 | 15,495 tok |
| Hyperion-GPU/ProofFlow-v0.1 | 7 | Codex, OpenCode | 1 | 484 tok |
| ukorvl/web-of-flaws A structured library of web security flaws for humans and coding agents with vulnerable ex | 7 | Claude Code, Codex, GitHub Copilot, OpenCode | 3 | 923 tok |
| boldprojekte/franke_skills Agent-first CLI that runs Codex, Claude Code, and Grok as detached coding workers, while a | 7 | Codex, OpenCode | 1 | 35 tok |
| dkstm95/hope Hope helps people take on more complex work with AI while preserving their judgment and ag | 7 | Claude Code, Codex, OpenCode | 2 | 292 tok |
| Leoyang183/sync-agents-settings Sync MCP server configs from Claude Code to Gemini CLI, Codex CLI, OpenCode, Kiro, and Cur | 7 | Claude Code, Codex, OpenCode | 2 | 2,154 tok |
| jakubs2623/notebooklm-skill Connect NotebookLM research with Claude to generate structured content from URLs, PDFs, an | 7 | Codex, OpenCode | 1 | 805 tok |
| paarths-collab/github-pr-context-mcp AI-Powered Repository Memory | 7 | Claude Code, Codex, GitHub Copilot, Cursor, Windsurf | 5 | 708 tok |
| Benknightdark/neo-skills neo-blog-iota.vercel.app Reusable AI Agent skills library covering software development, architecture design, code | 7 | Codex, OpenCode | 1 | 777 tok |
| altmetric/altmetric-mcp MCP server for Altmetric APIs - retrieve citation metrics and research output data for AI | 7 | Claude Code, Codex, OpenCode | 2 | 3,594 tok |
| overstarry/qweather-mcp jasminides.com | 7 | Codex, OpenCode | 1 | 534 tok |
| AvinashP/AgentsAtlas Minimal workflow for building production-ready projects with Claude Code & Codex. 8 comman | 7 | Claude Code, Codex, OpenCode | 2 | 489 tok |
| ngvoicu/kluris kluris.ngvoicu.dev Kluris gives AI coding agents shared, human-curated team knowledge: git-backed brains of m | 7 | Claude Code, Codex, OpenCode | 2 | 18,340 tok |
| geekjourneyx/gcli Production-ready Gmail read-only CLI in Go with OAuth2 login, Gmail query search, and JSON | 7 | Codex, OpenCode | 1 | 142 tok |
| kaisers-io/refs npmjs.com Gives coding agents the real source of your dependencies, not a guess. | 7 | Claude Code, Codex, OpenCode | 2 | 2,126 tok |