1,598 projects whose own agent configuration covers testing. These are not mods to install — they are how the maintainers of these repositories tell an agent what to do, and what to avoid.
All projects Building agents8,369Claude Code6,848Data and AI3,594Git and workflow3,550Backend and APIs3,545Languages3,459Planning3,305Code review2,872DevOps and cloud2,444Writing and docs2,443Memory and context2,373Research2,311
Any agent Claude CodeCodexOpenCodeGitHub CopilotGemini CLICursorWindsurfKiro
| Project | Stars | Configures | Files | Always loaded |
|---|---|---|---|---|
| MUDdown/MUDdown muddown.com MUDdown — A modern MUD platform using Markdown as the universal game markup language | 2 | Claude Code, Codex, OpenCode | 21 | 3,756 tok |
| frontendmentorio/newsletter-sign-up-with-success-message frontendmentor.io This will test your skills with basic form structure, validation, and submission. The succ | 2 | Claude Code, Codex, OpenCode | 2 | 2,238 tok |
| j-jayes/agents-md | 2 | Claude Code, Codex, OpenCode | 9 | 1,721 tok |
| LIghtJUNction/AGENTS.md The prompt with the best effect was identified through experimental testing. | 2 | Codex, OpenCode | 1 | 15 tok |
| pure-golang/level85 Shared agent skills, Taskfile, linter config, and Claude Code conventions for a pure-golan | 2 | Claude Code, Codex, OpenCode | 38 | 2,341 tok |
| 8Dionysus/aoa-evals Portable evaluation bundles for agents and agent-shaped workflows: bounded, reproducible, | 2 | Codex, OpenCode | 1 | 1,124 tok |
| Dimkox/adaptive-grok-build-pro Adaptive Grok Build Pro — enterprise-style adaptive workflow for Grok Build | 2 | Claude Code, Codex, OpenCode | 38 | 5,367 tok |
| theogravity/bun-elysiajs-starter-turbo-monorepo A starter monorepo for building APIs with Bun, ElysiaJS, Kysely, and Turborepo — includes | 2 | Claude Code, Codex, OpenCode | 3 | 4,547 tok |
| drmikecrowe/git-worktree-organize Convert any git repository into the canonical bare-hub worktree layout, so every branch li | 2 | Claude Code, Codex, OpenCode | 48 | 1,902 tok |
| luoli523/harness-project-template | 2 | Claude Code, Codex, OpenCode | 13 | 1,737 tok |
| careerchain-ys/stdd STDD (Spec and Test Driven Development) methodology, skills, and templates for Claude Code | 2 | Claude Code, Codex, OpenCode | 3 | 2,708 tok |
| Prism-Shadow/swe-bench-essential prism-shadow.github.io | 2 | Claude Code, Codex, OpenCode | 2 | 1,969 tok |
| adobe/aem-desktop | 2 | Claude Code, Codex, OpenCode | 2 | 3,985 tok |
| msw2004727/FC toosterx.com | 2 | Claude Code, Codex, Gemini CLI, OpenCode | 17 | 10,189 tok |
| Adios94/megabonk-game MegaBonk 3D Roguelike Survivor - Three.js game (playable in browser) | 2 | Claude Code, Codex, Cursor, OpenCode | 7 | 1,464 tok |
| MeenakshiSundaram-MS/prove-it | 2 | Claude Code, Codex, GitHub Copilot, OpenCode | 2 | 4,075 tok |
| Xclaw-bot/benchmark-task-authoring Claude Code skill: measured laws for authoring hard Terminal-Bench 2 / Harbor benchmark ta | 2 | Claude Code, Codex, OpenCode | 1 | 6,621 tok |
| divo12/UVVR | 2 | Claude Code, Codex, OpenCode | 2 | 1,722 tok |
| rtorcato/repo-tooling docs.torcato.dev Stop configuring tools. One CLI to scaffold, audit, and fix a repo's toolchain — linting, | 2 | Claude Code, Codex, OpenCode | 2 | 2,791 tok |
| Sumatoshi-tech/prompts Prompts which we use in day-to-day coding | 2 | Codex, OpenCode | 1 | 2,852 tok |
| deggertsen/bondfires Video sharing social app - React Native + Expo + Convex + Tamagui | 2 | Claude Code, Codex, OpenCode | 2 | 1,116 tok |
| SilenceInsect/AIDocxWorkFlow | 2 | Claude Code, Codex, Cursor, OpenCode | 21 | 1,861 tok |
| Phani3108/Cortex cortex1.vercel.app One config. Every AI coding tool. Zero drift. Cortex is a universal context engine that c | 2 | Claude Code, Codex, OpenCode | 2 | 879 tok |
| deancourse/openspec-agent-skills-practice A repo for practicing full-stack project generation with OpenSpec | 2 | Claude Code, Codex | 3 | — |
| agoda-com/agent-catalog-eval CLI to test skills and prompts | 2 | Codex, OpenCode | 1 | 1,722 tok |
| Tano73/agent-skills | 2 | Claude Code, Codex, OpenCode | 2 | 1,700 tok |
| hamzaMissewi/agent-skills | 2 | Claude Code, Codex, Gemini CLI, OpenCode | 11 | 1,942 tok |
| jkrumm/hermes-agent Hermes Agent setup — config, skills, patches, cron (Mac Mini-only) | 2 | Claude Code, Codex, OpenCode | 3 | 12,127 tok |
| vivalalova/claude-plugins-manager marketplace.visualstudio.com | 2 | Claude Code, Codex, OpenCode | 3 | 2,013 tok |
| Simon-Hwang/gg-plugins a minimal version made from everything-claude-code for go/python project | 2 | Claude Code, Codex, OpenCode | 4 | 790 tok |
| shuji-bonji/houki-nta-mcp npmjs.com An MCP server for retrieving National Tax Agency (NTA) notifications, Q&A examples, and ta | 2 | Codex, OpenCode | 1 | 2,422 tok |
| shuji-bonji/houki-egov-mcp npmjs.com An MCP server for using Japanese laws and regulations (e-Gov Law Search / Law API v2) from | 2 | Codex, OpenCode | 1 | 2,617 tok |
| Huleinpylo/kali-agents-mcp | 2 | Claude Code, Codex, OpenCode | 9 | 3,290 tok |
| cyanheads/stackexchange-mcp-server npmjs.com Search Stack Exchange questions, fetch complete Q&A threads as clean markdown, browse tag | 2 | Claude Code, Codex, OpenCode | 2 | 15,818 tok |
| indrasvat/shux shux.pages.dev A modern take on tmux | 2 | Claude Code, Codex, OpenCode | 11 | 5,585 tok |
| andnp/ragdocs-mcp | 2 | Claude Code, Codex, GitHub Copilot, OpenCode | 4 | 3,711 tok |
| Pr0j3c7t0dd-Ltd/cut-copy-paste-mcp | 2 | Claude Code, Codex, OpenCode | 2 | 2,234 tok |
| aself101/mcp-secure-server A universal security-by-default framework for Model Context Protocol (MCP) servers that pr | 2 | Claude Code, Codex, OpenCode | 2 | 1,858 tok |
| attenlabs/hotato hotato.dev Find what broke in your agent calls. Pin it so it never ships again. Local voice-agent cal | 2 | Codex, OpenCode | 1 | 2,697 tok |
| hs737/mcp-server-for-ynab pypi.org An AI-first MCP server for YNAB. Read-only by default, with reversible writes and verifica | 2 | Claude Code, Codex, OpenCode | 13 | 3,660 tok |
| lbk-open/super-spec npmjs.com Agent Skills that take a requirement — or a production alert — to a reviewed pull request: | 2 | Claude Code, Codex, OpenCode | 2 | 813 tok |
| sebin-gg/zlog agentskills.io Session-log compressor & storage optimizer for Claude Code, Cursor, Codex, Gemini, Windsur | 2 | Codex, OpenCode | 1 | 689 tok |
| sandraschi/openbci-mcp OpenBCI EEG MCP server (BrainFlow + SOTA webapp) | 2 | Claude Code, Codex, GitHub Copilot, Cursor, OpenCode, Windsurf | 6 | 781 tok |
| piyushptiwari1/mcpkernel pypi.org The Security Kernel for AI Agents — MCP/A2A gateway with policy enforcement, taint trackin | 2 | Claude Code, Codex, GitHub Copilot | 8 | 2,161 tok |
| snow-wind-001/CodeRecoder CodeRecoder: MCP for recode the Code | 2 | Claude Code, Codex, OpenCode | 2 | 1,280 tok |
| tszaks/imessage-mcp MCP server that lets AI agents read, search and send iMessages and SMS on macOS, with phot | 2 | Codex, OpenCode | 1 | 544 tok |
| MT-gar/Nexus Multi-Agent Coordination System — Enables multiple Claude Code sessions to collaborate lik | 2 | Claude Code, Codex | 9 | 1,792 tok |
| sla1k/smart-gym-mcp MCP server connecting AI assistants to SmartGym — manage workouts and training programs wi | 2 | Claude Code, Codex, OpenCode | 3 | 848 tok |
| Parra-Inc/feedback-mcp Free, open-source, self-hosted feedback collection with a built-in MCP server. One endpoin | 2 | Claude Code, Codex, OpenCode | 2 | 159 tok |
| jordi-murgo/cliptunnel-mcp Operate a locked-down remote machine through its clipboard — MCP server tunneled over clip | 2 | Claude Code, Codex | 2 | — |