Building agents

5,661 projects whose own agent configuration covers building agents. 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 Claude Code6,875Data and AI3,584Git and workflow3,574Backend and APIs3,550Languages3,468Planning3,315Code review2,876Testing2,653DevOps and cloud2,462Writing and docs2,461Memory and context2,373Research2,315

Any agent Claude CodeCodexOpenCodeGitHub CopilotGemini CLICursorWindsurfKiro

ProjectStarsConfiguresFilesAlways loaded
snarktank/ralph x.com Ralph is an autonomous AI agent loop that runs repeatedly until all PRD items are complete 22,121 Claude Code, Codex, OpenCode 2 1,238 tok
NirDiamant/agents-towards-production diamant-ai.com End-to-end, code-first tutorials for building production-grade GenAI agents. From prototyp 21,825 Codex, OpenCode 1 830 tok
1jehuang/jcode jcode.sh High performance coding agent harness written in Rust, built for heavy multi-agent dev wor 21,528 Claude Code, Codex, OpenCode 2 1,278 tok
elizaOS/eliza elizaresearch.ai Open source agentic operating system 19,774 Codex, OpenCode 1 982 tok
browser-use/browser-harness browser-harness.com Let Claude Code, Codex or Cursor use your real Chrome, logged in as you. One prompt to set 18,888 Codex, OpenCode 1 506 tok
nukeop/nuclear nuclearplayer.com Streaming music player that finds free music for you 18,876 Claude Code, Codex, GitHub Copilot, OpenCode 7 4,608 tok
gastownhall/gastown Gas Town - multi-agent workspace manager 18,711 Claude Code, Codex, Cursor, OpenCode 8 1,529 tok
kitao/pyxel A retro game engine for Python 18,525 Codex, OpenCode 1 65 tok
emcie-co/parlant parlant.io Parlant is an open platform for building customer-facing chat agents with AI. Describe how 18,324 Codex, OpenCode 1 986 tok
leon-ai/leon getleon.ai 🧠 Leon is your open-source personal assistant. 17,646 Claude Code, Codex, OpenCode 2 2,307 tok
GreyDGL/PentestGPT Automated Penetration Testing Agentic Framework Powered by Large Language Models 16,287 Claude Code, Codex 18 780 tok
yusufkaraaslan/Skill_Seekers skillseekersweb.com Convert documentation websites, GitHub repositories, and PDFs into Claude AI skills with a 15,283 Claude Code, Codex, OpenCode 2 9,413 tok
mindfold-ai/Trellis docs.trytrellis.app The best agent harness. 15,098 Claude Code, Codex, Cursor, OpenCode 41 2,163 tok
experientiallabs/experiential experientiallabs.ai Experiential is the open source, zero markup gateway for BYOK, self-hosted and 1000+ marke 14,970 Claude Code, Codex, OpenCode 2 7,600 tok
apify/apify-mcp-server mcp.apify.com The Apify MCP server enables your AI agents to extract data from social media, search engi 14,943 Claude Code, Codex, OpenCode 6 2,628 tok
analysis-tools-dev/static-analysis analysis-tools.dev ⚙️ A curated list of static analysis (SAST) tools and linters for all programming language 14,874 Claude Code, Codex, GitHub Copilot, Cursor, OpenCode, Windsurf 5 515 tok
fathah/hermes-desktop hermesone.org Desktop Companion for Hermes Agent 14,536 Claude Code, Codex, OpenCode 9 2,500 tok
OpenByteInc/QuantDinger ai.quantdinger.com Open-source AI Trading OS, agent trading, and vibe trading, with Jev System One integratio 13,551 Claude Code, Codex, OpenCode 2 776 tok
NangoHQ/nango nango.dev Connect your agents & product to 1,000 APIs. 13,130 Claude Code, Codex, OpenCode 13 681 tok
laradock/laradock laradock.io Full PHP development environment for Docker. Run Laravel, Symfony, CodeIgniter, Phalcon, W 12,682 Claude Code, Codex, GitHub Copilot, Cursor, Gemini CLI, OpenCode, Windsurf 6 584 tok
infracost/infracost infracost.io Cloud cost intelligence for engineers, AI coding agents, and CI/CD 💰📉 Shift FinOps Left! 12,610 Claude Code, Codex, OpenCode 2 501 tok
NVIDIA/cosmos nvidia.com NVIDIA Cosmos is an open platform of world models, datasets, and tools that enables develo 12,292 Codex, OpenCode 1 356 tok
meshery/meshery meshery.io Meshery, the cloud native manager 12,134 Claude Code, Codex, GitHub Copilot, OpenCode 27 8,494 tok
omnigent-ai/omnigent omnigent.ai Omnigent is an open-source AI agent framework and meta-harness: orchestrate Claude Code, C 11,240 Claude Code, Codex, GitHub Copilot, OpenCode 13 3,434 tok
aden-hive/hive Multi-Agent Harness for Production AI 11,140 Claude Code, Codex, OpenCode 2 507 tok
VoltAgent/voltagent voltagent.dev AI Agent Engineering Platform built on an Open Source TypeScript AI Agent Framework 10,923 Claude Code, Codex, OpenCode 2 340 tok
numman-ali/openskills Universal skills loader for AI coding agents - npm i -g openskills 10,823 Claude Code, Codex, OpenCode 2 301 tok
zhu1090093659/dsh-web dsh-market.com DeepSeek Harness (DSH) Web Plugin Aggregation Ecosystem · Everything is a plugin, distribu 10,120 Claude Code, Codex, OpenCode 8 3,817 tok
companion-inc/feynman feynman.is The open source AI research agent. 10,049 Claude Code, Codex, OpenCode 2 1,613 tok
diet103/claude-code-infrastructure-showcase Examples of my Claude Code infrastructure with skill auto-activation, hooks, and agents 10,046 Claude Code, Codex 23 —
GetBindu/Bindu docs.getbindu.com Bindu: The identity, communication, and payments layer for AI agents. 10,006 Claude Code, Codex, GitHub Copilot, OpenCode 9 7,026 tok
pacifio/atlas tryatlas.cc Source control for agents. Use multiple coding agents, track their changes and query them 9,458 Claude Code, Codex, OpenCode 2 4,333 tok
openstatusHQ/openstatus openstatus.dev Open-source status page, incident response and uptime monitoring 9,248 Claude Code, Codex, OpenCode 8 1,371 tok
CoreBunch/Instatic instatic.com The open-source alternative to Webflow, Framer and WordPress. Agentic self-hosted visual C 9,069 Claude Code, Codex, OpenCode 5 8,802 tok
strands-agents/harness-sdk strandsagents.com Build an agent harness and control it end-to-end. Open-source SDK for production AI agents 9,057 Claude Code, Codex, OpenCode 19 3,106 tok
google/adk-go google.github.io An open-source, code-first Go toolkit for building, evaluating, and deploying sophisticate 8,943 Claude Code, Codex, Gemini CLI, OpenCode 3 5,560 tok
iflytek/astron-agent astron.ai Enterprise-grade, commercial-friendly agentic workflow platform for building next-generati 8,918 Claude Code, Codex, OpenCode 2 2,282 tok
mattpocock/sandcastle Orchestrate sandboxed coding agents in TypeScript with sandcastle.run() 8,876 Claude Code, Codex, OpenCode 5 1,290 tok
rikkahub/rikkahub rikka-ai.com RikkaHub is an Android APP that supports for multiple LLM providers. 8,666 Claude Code, Codex, OpenCode 7 1,646 tok
kunchenguid/firstmate Talk to one agent. Ship with a crew. 8,612 Claude Code, Codex, OpenCode 35 10,584 tok
withastro/flue flueframework.com The sandbox agent framework. 8,607 Codex, OpenCode 1 912 tok
jnMetaCode/superpowers-zh sp.aiolaola.com 🦸 AI coding superpowers · Chinese-enhanced edition — superpowers (116k+ ⭐), fully transla 8,484 Claude Code, Codex, Gemini CLI, OpenCode 3 3,321 tok
zenstory-ai/oh-story-claudecode zenstory.ai A web fiction/novel writing skill pack covering the full workflow for ranking analysis, te 8,335 Claude Code, Codex, OpenCode 2 1,292 tok
NomaDamas/k-skill k-skill.nomadamas.org A collection of skills for Koreans — turn your Agent into a Korean 8,275 Claude Code, Codex, OpenCode 2 3,918 tok
nullclaw/nullclaw nullclaw.io Fastest, smallest, and fully autonomous AI assistant infrastructure written in Zig 8,201 Claude Code, Codex, OpenCode 2 6,570 tok
fonoster/fonoster fonoster.com The AI that answers the phone. 8,163 Claude Code, Codex, OpenCode 11 2,425 tok
Gentleman-Programming/engram engram.gentlemanprogramming.com Persistent memory system for AI coding agents. Agent-agnostic Go binary with SQLite + FTS5 7,815 Codex, OpenCode 1 1,042 tok
openai/plugins OpenAI Plugins 7,777 Codex 1 —
mufeedvh/code2prompt code2prompt.dev A CLI tool to convert your codebase into a single LLM prompt with source tree, prompt temp 7,747 Claude Code, Codex, OpenCode 7 299 tok
magnitudedev/magnitude magnitude.dev Open source inference engine that tunes its kernels on your hardware to find the fastest w 7,713 Claude Code, Codex, OpenCode 2 2,276 tok