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.

FR · DE · ES · NL

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

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:

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

Beyond skills — the full Claude Code toolkit

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

Slash commands

100+ slash commands across 12 categories — invoke with /command-name in any Claude Code session:

Install: /plugin install uitkit-commands@uitkit or copy commands/ into .claude/commands/.

Why Use Claude Code Skills?

One command gives Claude instant expertise across every domain you work in.

Who Is This For?

Claude Code Developer FAQ

What is Claude Code?

Claude Code is Anthropic's official command-line AI assistant for software development. It runs in your terminal or IDE (VS Code, JetBrains), reads your codebase, edits files, runs commands, and completes tasks autonomously. Install it with npm install -g @anthropic-ai/claude-code or via the desktop app.

What are Claude Code skills?

Skills are markdown files in .claude/commands/ (or loaded via the plugin system) that define reusable expert behaviors. When triggered by a slash command or keywords, Claude Code reads the skill and applies its domain expertise to your current context — no repeated prompting required.

How is UitKit different from writing a CLAUDE.md file?

A CLAUDE.md sets project-level context for one repo. UitKit skills are domain-level and reusable across every project — 1,138+ skills covering FastAPI, Kubernetes, HubSpot, React, Terraform, and hundreds more stacks.

Does UitKit work with Cursor, GitHub Copilot, or other AI coding tools?

UitKit is designed for Claude Code (CLI and IDE extensions). Cross-harness adapters in compatibility/ also support Cursor, Windsurf, Codex CLI, Gemini Code Assist, and GitHub Copilot.

How do I install Claude Code skills from UitKit?

Run npx uitkit add all to install everything, or use the Claude Code plugin system: /plugin marketplace add UitbreidenOS/UitKit then /plugin install uitkit-everything@uitkit. Install by domain with npx uitkit add skills backend or npx uitkit add skills devops-infra.

Profession Packs — 25 Role-Specific Claude Code Configurations

25 profession-specific packs — pre-wired skill stacks, agents, workflows, and daily routines for each role.

Each pack includes: domain-specific slash commands, a curated agent roster, a daily workflow, a 30-day ramp plan, and tool integration configs.

Workspace Stacks — 42 Pre-Wired Domain Workspaces

Complete workspace stacks with a CLAUDE.md, 8 skills, and project structure — each designed for a specific role or domain. Drop a stack into your project and Claude immediately has domain expertise.

Engineering & Infrastructure

Data & AI

Business & GTM

Operations & Support

# Install a complete workspace stack
npx uitkit add all   # includes all 42 stacks

Quick Start — Install Claude Code Skills in 30 Seconds

# Install everything
npx uitkit add all

# Install by domain
npx uitkit add skills backend          # 40+ backend skills
npx uitkit add skills devops-infra     # Kubernetes, Terraform, Docker, CI/CD
npx uitkit add skills ai-engineering   # RAG, LangGraph, Claude API, MCP builder
npx uitkit add skills legal            # GDPR, SOC 2, contracts, NDA review
npx uitkit add skills finance          # DCF, 3-statement model, pitch deck
npx uitkit add skills small-business   # Invoice chaser, cash flow, Shopify

# Install agents
npx uitkit add agents                  # All 728+ specialist agents

# Install in your language
npx uitkit add all --lang fr           # French
npx uitkit add all --lang de           # German
npx uitkit add all --lang nl           # Dutch
npx uitkit add all --lang es           # Spanish

# Discover
npx uitkit search "circuit breaker"
npx uitkit list

Repository Structure

UitKit/
├── .claude-plugin/           # Plugin and marketplace manifests
│   ├── plugin.json           # Plugin metadata and component paths
│   └── marketplace.json      # Marketplace catalog for /plugin marketplace add
│
├── plugins/                  # 19 installable domain plugins
│   ├── uitkit-productivity/     # 66 skills
│   ├── uitkit-small-business/   # 47 skills
│   ├── uitkit-backend/          # 41 skills
│   ├── uitkit-devops-infra/     # 36 skills
│   ├── uitkit-gtm/              # 32 skills
│   ├── uitkit-marketing/        # 22 skills
│   ├── uitkit-legal/            # 21 skills
│   ├── uitkit-sdr/              # 18 skills
│   ├── uitkit-ai-engineering/   # 17 skills
│   ├── uitkit-finance/          # 16 skills
│   ├── uitkit-data-ml/          # 15 skills
│   ├── uitkit-product/          # 15 skills
│   ├── uitkit-automation/       # 14 skills
│   ├── uitkit-database/         # 12 skills
│   ├── uitkit-git/              # 3 skills
│   ├── uitkit-commands/         # 100 slash commands
│   ├── uitkit-personas/         # 10 personas
│   └── uitkit-everything/       # meta-bundle (all domains)
│
├── skills/                   # 1,138+ auto-invoking domain skills
│   ├── backend/              # Next.js, FastAPI, Go, Rust, .NET, Rails, Laravel, Flutter
│   ├── devops-infra/         # Kubernetes, Terraform, Docker, CI/CD, AWS/GCP/Azure, Helm
│   ├── ai-engineering/       # Claude API, RAG, LangGraph, MCP builder, Agent Teams, Ultraplan
│   ├── data-ml/              # dbt, Spark, Kafka, MLOps, PyTorch, Pandas/Polars
│   ├── database/             # Drizzle, Prisma, PostgreSQL, Supabase, Redis, Elasticsearch
│   ├── gtm/                  # HubSpot, SDR, email automation, CRM hygiene, deal desk
│   ├── legal/                # Contract review, GDPR, SOC 2, EU AI Act, NDA, IP clearance
│   ├── finance/              # DCF, 3-statement model, IC memo, pitch deck, GL reconciler
│   ├── marketing/            # SEO, AI SEO, paid ads, content strategy, CRO, copywriting
│   ├── product/              # Discovery, roadmap, UX research, competitive teardown
│   ├── productivity/         # PR review, ADR writer, tech debt tracker, TDD guard
│   ├── small-business/       # Invoice chaser, QuickBooks, Shopify, 14 industry verticals
│   ├── automation/           # Playwright, browser automation, Remotion, SaaS scaffolder
│   ├── computer-use/         # UI testing, visual QA, legacy-app automation, screenshot verify
│   ├── git/                  # Git workflow automation
│   ├── sdr/                  # Sales development representative skills
│   └── finance-payments/     # Payments and fintech skills
│
├── agents/                   # 728+ specialist subagents
│   ├── advisors/             # 15 C-suite agents (CEO, CTO, CFO, CMO, CISO, COO, CPO...)
│   ├── core/                 # architect · planner · code-reviewer · security-reviewer
│   ├── roles/                # 100+ domain specialists (SRE, k8s, RAG, fintech, legal...)
│   ├── specialists/          # small-business-advisor, ecommerce, local-services
│   ├── build-resolvers/      # TypeScript and Python build error resolvers
│   └── sdr/                  # SDR and GTM agents
│
├── commands/                 # 100+ slash commands across 12 categories
│   ├── git/                  # commit-msg · pr-description · changelog · release-notes
│   ├── testing/              # write-tests · test-coverage · fix-failing-test · e2e-scaffold
│   ├── refactor/             # extract-function · simplify · remove-dead-code · modernize-syntax
│   ├── docs/                 # readme-gen · api-docs · docstring-add · architecture-doc
│   ├── debug/                # explain-error · stacktrace-analyze · memory-leak · perf-profile
│   ├── devops/               # dockerfile-gen · k8s-manifest · ci-pipeline · terraform-module
│   ├── database/             # migration-gen · query-optimize · index-advisor · er-diagram
│   ├── security/             # security-scan · dep-audit · secret-scan · threat-model
│   ├── frontend/             # component-gen · a11y-audit · storybook-gen · css-cleanup
│   ├── api/                  # endpoint-gen · openapi-spec · rate-limit · webhook-handler
│   ├── ai-engineering/       # prompt-improve · rag-setup · mcp-server-gen · agent-scaffold
│   └── productivity/         # standup-notes · task-breakdown · decision-doc · weekly-review
│
├── hooks/                    # 40 event-driven automations
│   ├── pre-tool-use/         # secret-scanner · injection-scanner · block-dangerous · git-push-confirm
│   ├── post-tool-use/        # tdd-guard · lint-check · test-runner · auto-git-stage
│   ├── lifecycle/            # session-context-loader · keepalive-poke
│   ├── notification/         # telegram-pr-notify · ntfy-push · tts-announcer
│   ├── permission/           # auto-allow-readonly
│   ├── subagent/             # agent-comms
│   ├── context/              # context injection hooks
│   └── advanced/             # sound-system · audit-log · output-size-warn
│
├── guides/                   # 100+ human-readable documentation files
│   └── [de/ · es/ · fr/ · nl/]    # Translated versions
├── workflows/                # 45+ end-to-end process workflows
│   └── [de/ · es/ · fr/ · nl/]
├── prompts/                  # 31+ reusable prompt templates
│   ├── system-prompts/       # Role-based system prompt templates
│   ├── project-starters/     # Project initialization prompts
│   └── task-specific/        # Task-specific prompt templates
├── rules/                    # 32 always-follow guideline files
│   ├── common/               # Language-agnostic coding and workflow principles
│   └── language-specific/    # Per-language style rules
├── mcp/                      # 41 MCP server config guides
│   └── configs/              # Ready-to-use JSON configs (GitHub, Postgres, Redis, Kafka, Docker, and more)
├── personas/                 # 10 operating profiles
├── output-styles/            # 8 output style definitions
├── themes/                   # 10 UI themes (Dracula, Nord, Tokyo Night, Catppuccin...)
├── statuslines/              # 6 statusline scripts
├── keybindings/              # 4 presets: vim · emacs · ergonomic · power-user
├── settings-templates/       # 5 starter settings.json templates
├── routines/                 # 10 scheduled cloud-agent routine templates
├── compatibility/            # Cross-harness adapters (Cursor, Windsurf, Codex, Gemini, Copilot)
├── claude-md-examples/       # 20 annotated real-world CLAUDE.md templates
├── examples/                 # Complete working project references
│   ├── agent-sdk/            # Python & TypeScript Agent SDK starters
│   ├── nextjs-saas/          # Next.js + Supabase + Stripe
│   ├── fastapi-ai-app/       # FastAPI + Claude API
│   ├── go-cli-tool/          # Go CLI tool
│   └── dbt-pipeline/         # dbt data pipeline
├── structures/               # 83 project structure templates
├── professional-stacks/      # 50 pre-wired workspace stacks (CLAUDE.md + 8 skills each)
├── scripts/                  # Build and utility scripts
├── docs/                     # ADRs and internal documentation
└── index.json                # Full searchable index (npx uitkit search)

Most Popular Claude Code Skills Right Now

Top 100 MCP Servers for Claude Code — Indie Builder Starter Stack

The fastest way to extend Claude Code. MCP servers give Claude direct access to your tools — GitHub, Figma, Stripe, Jira, Notion, Slack, and 94 more.

The indie builder starter stack:

→ Full guide: Top 100 MCP Servers for Indie Builders — installation configs, tier rankings, and curated bundles for every stack.

npx uitkit add mcp starter   # GitHub + Memory + Playwright
npx uitkit add mcp all       # All 40 individual config guides

Claude for Small Business — 30+ Vertical Skills

The most complete community knowledge base for using Claude in a small business. Plain English skills, no terminal required, written for owners who already pay for QuickBooks, Shopify, HubSpot, and the rest. UitKit extends Anthropic's official Claude for Small Business launch with 30+ skills covering the long tail of verticals and workflows.

npx uitkit add skills small-business

Claude for Small Business by Vertical

Each guide is an end-to-end landing page for a specific industry — setup, skill stack, 30/60/90 expectations, FAQ.

Top Small Business Skills

Vertical-Specific Skills

Operator Skills (Cross-Cutting)

Specialist Agents for Small Business

• small-business-advisor — generalist diagnosis and workflow prioritization
• ecommerce-specialist — for Shopify/Amazon/Etsy/DTC operators
• local-services-specialist — for trades, salon, dental, fitness, restaurant, real estate
• restaurant-specialist — restaurant-specific operations
• [real-estate-specialist](https://github.com/UitbreidenOS/UitKit/blob/main/agen