uitkit

Claude Code Skills, Agents & Plugins — UitKit

UitKit is the definitive open-source Claude Code CLI knowledge base and ecosystem. Built for Anthropic's Claude 3.7 Sonnet and the Model Context Protocol (MCP), UitKit supercharges your terminal with autonomous AI coding agents, robust subagents, and production-grade AI developer workflows. It ships 1,138+ domain skills, 728+ specialist agents, 42 pre-wired workspace stacks, 41 MCP configs, 100+ slash commands, hooks, and workflows, all installable in 30 seconds. No stack re-explaining. Claude already knows your domain.

New to Claude Code? Claude Code is Anthropic's official command-line AI assistant for software development — it reads your codebase, runs commands, edits files, and completes tasks autonomously inside your terminal or IDE. UitKit is the open-source community library that extends it with expert-level skills across every stack and domain.

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Stop explaining your stack to Claude every session.

UitKit is the largest open-source knowledge base for Claude Code — 1,138+ skills, 728+ specialist agents, 100+ slash commands, 100+ guides, 40 hooks, 45 workflows, 83 project structures, 42 workspace stacks, 10 personas, 32 rules, 41 MCP server configs, 10 automation routines, 20 annotated CLAUDE.md examples, cross-harness adapters (Cursor/Windsurf/Codex/Gemini/Copilot), plus output styles, themes, statuslines, keybindings, settings templates, and an Agent SDK pack — all installable in 30 seconds.

# Install as a Claude Code plugin marketplace (recommended)
/plugin marketplace add UitbreidenOS/UitKit
/plugin install uitkit-everything@uitkit

# Or via npm
npx uitkit add all

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Install as a Claude Code plugin

UitKit ships as a native Claude Code plugin marketplace. Add it once, then install only the domains you need — skills auto-invoke based on what you're working on, agents and hooks come bundled.

# 1. Add the marketplace
/plugin marketplace add UitbreidenOS/UitKit

# 2. Install a domain plugin (or the everything bundle)
/plugin install uitkit-gtm@uitkit
/plugin install uitkit-devops-infra@uitkit
/plugin install uitkit-everything@uitkit

19 plugins, 1,138+ auto-invoking skills, 728 agents, 100 slash commands:

Plugin	Skills	Plugin	Skills
uitkit-productivity	66	uitkit-finance	16
uitkit-small-business	47	uitkit-data-ml	15
uitkit-backend	41	uitkit-product	15
uitkit-devops-infra	36	uitkit-automation	14
uitkit-gtm	32	uitkit-database	12
uitkit-marketing	22	uitkit-git	3
uitkit-legal	21	uitkit-commands	100 commands
uitkit-sdr	22	uitkit-personas	10 personas
uitkit-ai-engineering	17	uitkit-finance-payments	2
uitkit-everything	meta-bundle

Every skill is validated with claude plugin validate --strict. Prefer npm? npx uitkit add all still works.

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Beyond skills — the full Claude Code toolkit

UitKit covers every primitive Claude Code supports, not just skills: