Open-source AI skills for Claude Code
Skill packages, MCP servers and agent blueprints that Claude Code loads from a SKILL.md folder or an MCP connection. 1,327 listings in the catalog install into Claude Code; the ones below rank on the depth of the guide we wrote and how well the listing reads, not on GitHub stars alone.
How a listing gets into Claude Code
- MCP connector (search and install from inside Claude Code)
claude mcp add --transport http workflowstacks https://workflowstacks.com/api/mcp
- Plugin marketplace
/plugin marketplace add rahulsoni25/workflowstacks-emergent
- One listing, from the terminal
npx workflowstacks add <slug>
Every listing page has the matching button and shows what the install needs (keys, runtimes, desktop apps) before you click.
Best for Claude Code
Guide depth, then stars- 1Claude skills · ★ 61,738 · BerriAI
Litellm is a Python SDK and proxy server that simplifies calling over 100 LLM APIs from various providers, including OpenAI, Azure, and Google Vertex AI, with features like cost tracking, guardrails, load balancing, and logging.
- 2Claude skills · ★ 114,067 · JuliusBrussee
The caveman tool reduces the number of tokens used in text by simplifying language, similar to how a caveman would communicate, cutting 65% of tokens while maintaining the core message.
- 3Agents · ★ 190,109 · ohmyzsh
Ohmyzsh customizes your terminal experience with themes, plugins, and settings, making it easier to work with your command line interface.
- 4Claude skills · ★ 65,021 · mvanhorn
The last30days-skill AI agent researches any topic across multiple platforms including Reddit, X, YouTube, HN, Polymarket, and the web, then synthesizes a grounded summary.
- 5MCP servers · ★ 77,354 · headroomlabs-ai
Headroom reduces the number of tokens required to get the same answers from a large language model by compressing tool outputs, logs, files, and RAG chunks
- 6MCP servers · ★ 49,823 · mudler
LocalAI allows founders to run various AI models, including large language models, vision, voice, image, and video models, on any device without requiring a GPU.
- 7MCP servers · ★ 36,231 · HKUDS
Vibe-Trading provides a personal trading agent for fintech founders to automate and optimize their trading activities
- 8Claude skills · ★ 27,435 · vercel
The AI Toolkit allows founders to build AI-powered applications and agents using TypeScript, enabling automation and intelligent decision-making in their products.
- 9MCP servers · ★ 36,137 · can1357
Oh-my-pi is an AI coding agent that assists with coding tasks directly in the terminal, providing features like automated code editing and optimization.
- 10MCP servers · ★ 33,594 · agentscope-ai
Agentscope allows founders to build, run, and understand trustworthy agents with transparent and understandable bots using Python
- 11Claude skills · ★ 27,689 · Kilo-Org
Kilo is an open-source coding agent that helps founders build, ship, and iterate faster by automating coding tasks
- 12MCP servers · ★ 79,404 · diegosouzapw
OmniRoute provides a unified API gateway to access over 290 AI providers and 500 models, allowing developers to integrate multiple AI services into their applications without worrying about individual APIs and quotas.
- 13Agents · ★ 162,837 · msitarzewski
Agency-agents provides a collection of specialized AI agents that can be used to automate various tasks, from frontend development to community management, each with its own personality, processes, and deliverables.
- 14MCP servers · ★ 156,361 · open-webui
Open-webui provides a user-friendly interface to interact with AI models from Ollama and OpenAI API, allowing founders to leverage AI capabilities without extensive technical expertise
- 15Agents · ★ 116,951 · earendil-works
Pi provides a unified AI agent toolkit for startup founders, allowing them to leverage a large language model (LLM) API, agent loop, and command-line interface (CLI) tools to automate tasks and workflows.
- 16MCP servers · ★ 89,088 · koala73
Worldmonitor provides a unified dashboard for real-time global intelligence, aggregating news, tracking geopolitical events, and monitoring infrastructure through an AI-powered situational awareness interface
- 17Agents · ★ 121,854 · microsoft
Generative AI for Beginners provides 21 lessons to help startup founders get started with building generative AI models using Jupyter Notebooks
- 18Claude skills · ★ 255,808 · NousResearch
The hermes-agent is a flexible Python AI agent that automates tasks across complex project environments by leveraging advanced language model capabilities.
- 19MCP servers · ★ 355,695 · morluto
Rea allows founders to inspect and reverse engineer any app down to its binary level, providing clarity on its inner workings.
- 20Agents · ★ 98,335 · karpathy
Autoresearch generates automated research papers and articles using AI agents, allowing startup founders to quickly explore and summarize large amounts of information on a given topic.
🔥 Hot this week for Claude Code
Stars gained in 7 days- 1Rea: Reverse Engineer Apps+129,224★ this weekMCP servers · ★ 355,695 · morluto
Rea allows founders to inspect and reverse engineer any app down to its binary level, providing clarity on its inner workings.
- 2dsh-our-free-model+17,623★ this weekAgents · ★ 33,719 · Ebony-Vinyl
在 dsh 里装上这个插件即可,无需登录、注册或填 API Key,就能使用包括 DeepSeek V4.1 Flash、Kimi K3 在内的前沿模型——完全免费,不限量。 All you do is install this plugin in dsh: no login, no sign-up, no API
- 3Hyperframes: Fast HTML & Video Rendering for Agent‑Powered Apps+5,522★ this weekMCP servers · ★ 69,152 · heygen-com
Hyperframes is a tool that allows you to write HTML and render it as video, specifically designed for use with agents
- 4graphify+4,837★ this weekMCP servers · ★ 131,266 · Graphify-Labs
It builds a deterministic, query‑able knowledge graph of your entire codebase—including source files, docs, SQL schemas, configs and PDFs—so AI assistants can answer exact, code‑level questions without using a vector store.
- 5superpowers+4,091★ this weekAgents · ★ 303,229 · obra
Superpowers is an AI-agent framework and software development methodology that enables founders to build autonomous systems that can learn, reason, and act on their behalf.
🌱 New for Claude Code
Added recently- Agents · ★ 32,705 · onyx-dot-app
Onyx is an open‑source AI chat platform that lets you run a UI and API on top of any LLM (e.g., OpenAI, Anthropic, Llama) with advanced chat features.
- MCP servers · ★ 31,887 · ahujasid
Lets you drive Blender 3D actions by sending natural‑language prompts to any LLM through a local MCP server.
- Agents · ★ 10,544 · tigerless-labs
Autoharness continuously learns reusable Claude‑Code snippets from your own coding sessions and keeps the skill library up‑to‑date without a separate daemon.
- MCP servers · ★ 8,954 · tangency-labs
SolidCraft: an open-source parametric 3D CAD application built in pure Rust. Desktop, web, and automation through MCP.
- Claude skills · ★ 5,642 · SenteLabsAI
AI-powered virtual executive team — a single coherent executive persona backed by 8 specialist agents (FastAPI + Next.js).