23,307 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 agents7,541Claude Code6,614Data and AI3,687Backend and APIs3,492Languages3,397Planning3,211Git and workflow3,159Code review2,735Memory and context2,362Testing2,357DevOps and cloud2,306Writing and docs2,299Research2,296Frontend2,252Security2,009Productivity1,710
All Claude Code32,137 Codex23,307 OpenCode22,079 GitHub Copilot3,547 Gemini CLI1,916 Cursor1,738 Windsurf121 Kiro77
| Project | Stars | Configures | Files | Always loaded |
|---|---|---|---|---|
| pymc-labs/decision-hub | 100 | Claude Code, Codex, OpenCode | 5 | 4,914 tok |
| dkyazzentwatwa/chatgpt-skills My comprehensive, tested + audited, library of skills to use for ChatGPT. | 100 | Claude Code, Codex, OpenCode | 2 | 851 tok |
| aspenkit/aspens npmjs.com Your CLAUDE.md stopped working at 200 lines. Generate scoped skill files from your import | 100 | Claude Code, Codex, GitHub Copilot, OpenCode | 34 | 3,436 tok |
| deepklarity/harness-kit A kit for building with AI agents and also the engineering patterns around it. | 100 | Claude Code, Codex, OpenCode | 5 | 7,548 tok |
| gaixianggeng/mimi-remote Open-source native iPhone/iPad client for OpenAI Codex CLI and Claude Code — review diffs, | 100 | Codex, OpenCode | 1 | 719 tok |
| ToxSam/open-source-avatars opensourceavatars.com A curated registry of free 3D VRM avatars for games, VR, and the metaverse | 100 | Codex, OpenCode | 1 | 712 tok |
| OneYoungMean/KimodoUnityBridge Free Local Unity AI Motion Generate Tool.Based By Nvlab Kimodo. | 100 | Codex, OpenCode | 1 | 82 tok |
| christopherarter/superpowers-reasonix Superpowers skill port to Reasonix coding harness. | 100 | Codex, OpenCode | 1 | 761 tok |
| feuerdev/keep-mcp MCP server for Google Keep | 100 | Codex | 1 | — |
| manojbajaj95/claude-gtm-plugin Skills for GTM teams | 100 | Claude Code, Codex, OpenCode | 2 | 2,472 tok |
| yfedoseev/browser_oxide Stealth headless browser engine in Rust — native BoringSSL TLS/JA4 fingerprint, real JS vi | 100 | Claude Code, Codex, OpenCode | 2 | 1,256 tok |
| off-grid-ai/OGAD getoffgridai.co Off Grid AI — private, on-device AI. Run open models (text, vision, image, voice) locally | 100 | Claude Code, Codex, OpenCode | 3 | 4,835 tok |
| Kuadrant/mcp-gateway kuadrant.io An envoy-based MCP Gateway that integrates with Istio and policy attachment mechanisms for | 100 | Claude Code, Codex, OpenCode | 8 | 1,281 tok |
| d1vai/d1v-cli d1v.ai Experimental CLI for d1v.ai | 100 | Codex, OpenCode | 1 | 935 tok |
| wardmos/waybill Continue unfinished work across coding agents with portable handoff bundles. | 100 | Claude Code, Codex, OpenCode | 2 | 635 tok |
| captainflasmr/ollama-buddy A friendly Emacs interface for interacting with Ollama models | 99 | Claude Code, Codex | 40 | — |
| mirror4869/material-workbench Open-source, local-first creative asset workbench for Windows—organize, find, review, and | 99 | Codex, OpenCode | 1 | 1,140 tok |
| soramitsu/fearless-Android fearlesswallet.io Fearless Wallet is a mobile wallet designed for the decentralized future on the Kusama and | 99 | Codex, OpenCode | 1 | 1,873 tok |
| dominik1001/caldav-mcp 🗓️ A CalDAV Model Context Protocol (MCP) server to expose calendar operations as tools fo | 99 | Claude Code, Codex, OpenCode | 3 | 440 tok |
| katopz/katgpt-rs A neuro-symbolic micro-Transformer with speculative decoding, constraint pruning, recurren | 99 | Claude Code, Codex, OpenCode | 9 | 13,814 tok |
| 10xChengTu/harness-engineering Set up and improve harness engineering (AGENTS.md, docs/, lint rules, eval systems, projec | 99 | Codex, OpenCode | 1 | 1,511 tok |
| dmccreary/ibook-skills dmccreary.github.io | 99 | Claude Code, Codex, OpenCode | 3 | 9,880 tok |
| antoinebou12/uml-mcp antoinebou12.github.io UML-MCP Server is a UML diagram generation tool based on MCP (Model Context Protocol), whi | 99 | Codex, OpenCode | 1 | 374 tok |
| techwolf-ai/ai-first-toolkit ai-first.techwolf.ai Open-source Claude Code skills and Codex skills for AI-first work. Audit, re-engineer, and | 99 | Claude Code, Codex, OpenCode | 1 | 649 tok |
| ingo-eichhorst/Irrlicht Claude Code session lights in your macOS menu bar — 🟣 🟠 🟢 ✦ | 99 | Claude Code, Codex, OpenCode | 18 | 4,073 tok |
| nguyenyou/scalex nguyenyou.github.io Scala code intelligence for coding agents. Zero Build Server. Zero Compilation. Just answe | 99 | Claude Code, Codex, OpenCode | 4 | 209 tok |
| harness/mcp-server Harness’ official MCP Server | 99 | Claude Code, Codex, OpenCode | 2 | 2,002 tok |
| eunomia-bpf/ActPlane eunomia.dev eBPF Information Flow Enforcement for AI Agent safety, security and effectiveness | 99 | Claude Code, Codex, OpenCode | 6 | 2,143 tok |
| interviewstreet/hackerrank-orchestrate-august26 | 99 | Claude Code, Codex, OpenCode | 2 | 2,122 tok |
| kawayiYokami/P-ai A ready-to-use self-growing desktop AI assistant for long-running tasks, memory, agents, t | 99 | Codex, OpenCode | 1 | 5,630 tok |
| bmad-code-org/bmad-method-test-architecture-enterprise Test Architect Full BMad Method Enhancement | 99 | Codex, OpenCode | 1 | 470 tok |
| timrogers/formanator Submit and manage Forma (https://joinforma.com) claims from the command line and Model Con | 98 | Codex, OpenCode | 1 | 471 tok |
| pinkpixel-dev/mem0-mcp pinkpixel.dev A memory system using mem0 for AI applications. Enables long-term memory for AI agents as | 98 | Claude Code, Codex | 2 | — |
| Apricooooot/opencode-safechange A risk-aware multi-agent runtime for safe code migrations in OpenCode. | 98 | Claude Code, Codex, OpenCode | 4 | 173 tok |
| AOSSIE-Org/Website aossie.org AOSSIE Offical Website | 98 | Claude Code, Codex, OpenCode | 2 | 534 tok |
| DataDog/lading A suite of data generation and load testing tools | 98 | Claude Code, Codex, OpenCode | 7 | 1,777 tok |
| JKorf/Bitfinex.Net cryptoexchange.jkorf.dev C#/.NET client library for the Bitfinex.com cryptocurrency exchange REST and WebSocket API | 98 | Codex, GitHub Copilot, OpenCode | 2 | 2,389 tok |
| 577206/knowledge-forge Local-first Obsidian knowledge ingestion workbench for PDFs, Markdown, TXT and spreadsheet | 98 | Claude Code, Codex, OpenCode | 2 | 2,835 tok |
| linuxmatters/jive-vocals linuxmatters.sh Raw microphone recordings into broadcast-ready audio in one command. No configuration, and | 98 | Claude Code, Codex, OpenCode | 2 | 10,152 tok |
| aws-samples/aws-hpc-recipes Contains example recipes that demonstrate how to build HPC systems using AWS services and | 98 | Claude Code, Codex, OpenCode | 2 | 1,158 tok |
| ollygarden/opentelemetry-agent-skills Vendor-neutral OpenTelemetry skills for AI coding agents, grounded in upstream sources | 98 | Claude Code, Codex, OpenCode | 2 | 1,872 tok |
| MaimoryLab/BootAgent bootagent.ai BootAgent is a local management tool of AI agents. It turns a fresh machine into a usable, | 98 | Codex, OpenCode | 1 | 2,445 tok |
| zhangqi444/open-forge Let your AI coding agent self-host any open-source app for you. 2,200+ verified recipes — | 98 | Claude Code, Codex, OpenCode | 3 | 12,444 tok |
| demonixis/oxrsys | 98 | Codex, OpenCode | 1 | 3,580 tok |
| BintzGavin/helios heliosrender.com Programmatic video creation with web technologies you already know. CSS animations just wo | 98 | Claude Code, Codex, GitHub Copilot, OpenCode | 19 | 1,155 tok |
| heilingbrunner/tiaportal-mcp A Visual Studio Code extension to connect to Siemens TIA Portal and interact with TIA Port | 98 | Codex, OpenCode | 1 | 339 tok |
| finch04/LightBot A lightweight enterprise Java AI Agent platform. Covers advanced AI features including Age | 98 | Claude Code, Codex, OpenCode | 2 | 16,013 tok |
| letta-ai/letta-agent-sdk docs.letta.com The Letta Agent SDK is the SDK for stateful agents. Each agent has its own identity and lo | 98 | Codex, OpenCode | 1 | 1,478 tok |
| hahwul/gori gori.hahwul.com A fast, keyboard-driven HTTP intercepting proxy and hacking & pentesting toolkit for the t | 98 | Codex, OpenCode | 1 | 4,180 tok |
| Sentinel-One/purple-mcp s1.ai Access SentinelOne's Purple AI and security services through the Model Context Protocol (M | 98 | Claude Code, Codex, OpenCode | 2 | 5,121 tok |