Arc UI Introduction
Arc UI is a React UI library of animated components and complete page blocks built for shadcn and Next.js projects. It has 239 components and 138 blocks, including advanced charts, dashboards, flows and motion pieces such as a revenue globe and a horizon chart. You can add any piece with the shadcn CLI, or let a coding agent pull them in through the Arc UI MCP server, which is the library's main pitch: a UI kit that AI agents can build with. The core library is free and open source with 121 components and 22 blocks, and Arc Pro adds 118 motion components and 116 blocks with source code you keep. Its maker shared it on X in October 2026.
Arc UI Key Features
239 Components and 138 Blocks
Animated React components and full page blocks for charts, dashboards, flows and marketing sections, ready to drop into a real product.
Install With the shadcn CLI
Add a component to a shadcn and Next.js project from the command line and keep the source in your own codebase.
MCP Server for AI Agents
Coding agents can browse and install Arc UI components through the MCP server, with docs written for AI tools.
Free Open Core
The free tier includes 121 components and 22 blocks with the CLI, MCP and AI docs, and needs no account.
Arc UI Use Cases
Frontend developers: add animated charts, dashboards and landing page blocks to a Next.js app without building them from scratch.
Teams using coding agents: let an AI coding agent find and install ready-made components through the MCP server.
SaaS founders: assemble a polished product UI quickly from complete blocks and keep the source.
Arc UI User Guides
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Browse the components and blocks on the Arc UI website.
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Add a component to your shadcn and Next.js project with the shadcn CLI.
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Or connect the Arc UI MCP server so your coding agent can find and install components for you.
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Buy Arc Pro if you need the Pro motion components and blocks.
Arc UI Pricing
Free open core with 121 components and 22 blocks. Arc Pro costs $149 per year or $249 once for lifetime access, and team plans for up to 10 people cost $799 once or $449 per year.
Arc UI Frequently Asked Questions
Is Arc UI free?
What frameworks does Arc UI support?
How do AI agents use Arc UI?
Is there a team plan?
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