43,652 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 agents7,588Claude Code6,636Data and AI3,676Backend and APIs3,496Languages3,402Planning3,219Git and workflow3,187Code review2,745Testing2,374Memory and context2,364DevOps and cloud2,310Writing and docs2,309Research2,295Frontend2,261Security2,021Productivity1,715
All Claude Code31,998 Codex23,222 OpenCode22,170 GitHub Copilot3,550 Gemini CLI1,918 Cursor1,738 Windsurf137 Kiro80
| Project | Stars | Configures | Files | Always loaded |
|---|---|---|---|---|
| willem4130/claude-code-skills Development playground and collection of custom skills for Claude Code - extending Claude | 8 | Claude Code | 1 | 728 tok |
| Digilac/simap-mcp npmjs.com An MCP (Model Context Protocol) server for interacting with simap.ch, Switzerland's public | 8 | Claude Code | 1 | 2,031 tok |
| Chaitanya299/Orient npmjs.com A living map of what you're building: state, decisions, and the why for Claude Code, openc | 8 | Claude Code | 1 | 257 tok |
| kunaltulsidasani/claude-reimagined One-command bootstrap for a fully wired Claude Code workstation — installs Claude Code, RT | 8 | Claude Code | 4 | 433 tok |
| ShaftHQ/SHAFT_MCP Archived: SHAFT MCP moved to the SHAFT_ENGINE monorepo. | 8 | GitHub Copilot | 1 | 3,288 tok |
| ontology-of-everything/SemanticSkills skills.sh Ontology & concept design Agent Skills, plus read-only Huawei Cloud FinOps. npx skills add | 8 | Claude Code | 1 | 563 tok |
| EthanQC/feishu-user-plugin ethanqc.github.io Feishu MCP server + CLI tool: lets Claude Code/Codex/scripts directly take over your Feish | 8 | Claude Code, Codex, OpenCode | 2 | 6,712 tok |
| YuliiaKovalova/dotnet-template-mcp MCP server wrapping the .NET Template Engine for AI-driven template discovery, inspection, | 8 | Codex, GitHub Copilot, OpenCode | 2 | 1,696 tok |
| EternaHybridExchange/eterna-mcp ai.eterna.exchange No-KYC managed MCP trading exchange for AI agents: sandboxed TypeScript SDK, isolated sub- | 8 | Cursor | 1 | 468 tok |
| narrative-io/narrative-skills-marketplace An agent skills marketplace from Narrative I/O — interactive, AI-powered slash-command wor | 8 | Codex, OpenCode | 1 | 1,775 tok |
| IvanBBaev/servicenow-mcp-ai ivanbbaev.github.io ServiceNow MCP server — 67 tools over the full REST surface, with plan-and-apply write saf | 8 | Claude Code, GitHub Copilot | 2 | 890 tok |
| Dakera-AI/dakera-mcp dakera.ai Self-hosted MCP server for AI agent memory — 14 core tools, profile-based tiering (86+ ava | 8 | Claude Code | 2 | 248 tok |
| Adit-999/gitlab-mcp A MCP (Model Context Protocol) server for interacting with GitLab API. | 8 | GitHub Copilot | 1 | 903 tok |
| bcanfield/agentic-tech-debt skills.sh Every shortcut your coding agent takes, saved to your repo as it happens. Fix them when yo | 8 | Claude Code, Codex, OpenCode | 2 | 3,416 tok |
| StringKe/std-agent One .stdai/ source of truth, fanned out to 22 AI coding tools: Claude Code, Codex, Cursor, | 8 | Claude Code, Codex, OpenCode | 3 | 806 tok |
| S3DFX-CYBER/Claude-Skills-Security A production-grade security triage skill for AI agents. | 8 | Codex, OpenCode | 1 | 1,494 tok |
| jscraik/Agent-Skills Skills SDK for Codex/AI coding agents: author, validate, evaluate, and sync runtime projec | 8 | Codex, OpenCode | 1 | 1,271 tok |
| kangdacool/hwpx-editing-skill A validated ruleset + Python tool skill that enables LLM agents such as Claude Code and Co | 8 | Codex, OpenCode | 1 | 507 tok |
| eyesecurity/skills EU compliance enforcement for AI agents. Org-profile-driven guardrails for NIS2, GDPR & IS | 8 | Codex, OpenCode | 1 | 56 tok |
| pengzhangzhi/superpowers-ml Skills that make your AI agent do ML research like a skeptical scientist, not a hype machi | 8 | Claude Code, Codex, Gemini CLI, OpenCode | 3 | 1,913 tok |
| deanpeters/ai-product-operating-model-skills Evidence-based skills for designing and improving AI product operating models | 8 | Codex, OpenCode | 1 | 6,987 tok |
| amitgambhir/claude-certified-architect-guide amitgambhir.github.io Study guide for the Claude Certified Architect exam — 10 domain pages, interactive quiz, t | 8 | Claude Code | 1 | 673 tok |
| Lombiq/Orchard-Core-Agent-Skills Reusable, agent-agnostic knowledge packs for Orchard Core development, focused on theming, | 8 | Codex, OpenCode | 1 | 301 tok |
| vunm-io/passdown Shift-handover workflow for AI coding agents — capture ideas into an inbox, dispatch tasks | 8 | Claude Code, Codex, OpenCode | 1 | 1,280 tok |
| Advent-AI/truenorth-cli app.true-north.xyz Crypto market intelligence CLI — technical analysis, derivatives, DeFi, token performance, | 8 | Claude Code | 1 | 362 tok |
| kogakure/skills Collection of AI Agent Code skills | 8 | Claude Code, Codex, OpenCode | 2 | 519 tok |
| whenpoem/aiscientist An AI-driven research workflow for generating ideas, running experiments, and writing scie | 8 | Claude Code, Codex, OpenCode | 6 | 1,865 tok |
| twominutereports/marketing-skills Claude Marketing Skills for SEO, PPC, and ecommerce reporting, analysis, and automation vi | 8 | Claude Code, Codex, OpenCode | 2 | 1,185 tok |
| sherifabdlnaby/skills 🍣 Hand-rolled AI Skills distilled from my everyday experience. Git & Mise (...and others) | 8 | Codex, OpenCode | 1 | 1,402 tok |
| ysskrishna/ai-agent-skills Structured thinking skills for AI agents: brainstorming, decision support, systems thinkin | 8 | Claude Code, Codex, OpenCode | 2 | 2,500 tok |
| QuasarG/taste-bank tastebank.cloud An open-source frontend design manager. | 8 | Claude Code, Codex | 1 | — |
| AgenticFirst/Cerebro Cerebro is an open-source personal intelligence system for building AI experts, automating | 8 | Claude Code, Codex, OpenCode | 2 | 2,138 tok |
| MrBinnacle/azimuth mrbinnacle.github.io Decision-quality pre-commitment analysis. Hosted at azimuth-testbed.netlify.app — no insta | 8 | Claude Code | 2 | — |
| agents-inc/agents-inc An agent composition framework that builds stacks and compiles specialized subagents for C | 8 | Claude Code | 1 | 2,156 tok |
| Avierovich/openpitch avierovich.github.io Open, real-time, fully-sourced intelligence on AI startups — MCP-native, zero-cost. A free | 8 | Claude Code, Codex, OpenCode | 3 | 4,511 tok |
| d4rkNinja/infynon-cli cli.infynon.com Security-first Rust CLI for dependency risk scanning, API workflow testing, and shared cod | 8 | Claude Code, Codex, OpenCode | 2 | 997 tok |
| Luminaire1337/mtasa-docs-mcp MCP server for MTA:SA documentation with intelligent search and caching | 8 | Codex, OpenCode | 1 | 5,603 tok |
| MikeyPetrillo/Agent402 agent402.tools agent402.tools: 500+ pay-per-call tools, metered models and finished reports for AI agents | 8 | Claude Code, Codex, Cursor, OpenCode | 2 | 997 tok |
| anmolnagpal/devops-skills Multi-tool DevOps skills for Claude Code, Cursor, and Codex — Terraform, Kubernetes, Docke | 8 | Claude Code | 1 | 3,536 tok |
| ivan-magda/uikit-expert-skill Agent skill for writing correct, modern UIKit code in Swift. Covers lifecycle, memory, con | 8 | Claude Code, Codex, OpenCode | 2 | 1,387 tok |
| amadeus-dlc/amadeus Agent skills, templates, examples, validators, and docs for operating Amadeus DLC, a lifec | 8 | Claude Code, Codex, OpenCode | 11 | 4,995 tok |
| agentverus/agentverus-scanner agentverus.ai Trust, but verify. Security scanner for AI agent skills. Detects prompt injection, data ex | 8 | Codex, OpenCode | 1 | 2,548 tok |
| sprngr/rubber-duck 🦆 Socratic assistant operating system for developers who want better-quality decisions, n | 8 | Claude Code, Codex, OpenCode | 2 | 1,517 tok |
| nbpadilha/nbp-skillforge Compose agent skills (SKILL.md / commands) from reusable bricks, with a drift-gate. | 8 | Codex, OpenCode | 1 | 524 tok |
| EricSanchezok/repo-seed Seed agent-native, self-governing repos: AGENTS.md, MADR decision logs, deterministic gate | 8 | Claude Code, Codex, OpenCode | 2 | 1,047 tok |
| smorinlabs/agent2linear agent2linear is a command-line interface for Linear designed to work seamlessly with both | 8 | Claude Code | 2 | 6,030 tok |
| hamza-ali-shahjahan/hamzaish hamzaish.com Open-source agent OS for Claude Code that puts you in Builder Mode — and keeps you there f | 8 | Claude Code, Codex, OpenCode | 5 | 10,328 tok |
| imboard-ai/ai-dossier dossier-registry.vercel.app Universal standard for LLM-executable automation | 8 | Claude Code, Codex, OpenCode | 2 | 754 tok |
| AnimaApp/smarter-agent Minimal, self-checking, simulation-driven improvement for AI agents | 8 | Codex, OpenCode | 1 | 331 tok |
| Karthick-Ramachandran/persist-os Local-first CLI that gives your repo durable, AI-ready memory - features, ADRs, modules, a | 8 | Claude Code, Codex, OpenCode | 2 | 1,426 tok |