21st.dev

Find UI components and themes, retrieve code, and generate with hosted 21st AI when enabled.

Install

Add this to your `claude_desktop_config.json` file:

{
  "mcpServers": {
    "mcp": {
      "url": "https://21st.dev/api/mcp"
    }
  }
}

Remote endpoints

https://21st.dev/api/mcpstreamable-http

What it can do

No publishable tool enumeration has been recorded.

Community

Evidence

Sep 27, 2026, 3:33 AM UTCauth requiredversion not recorded—

Sep 19, 2026, 10:03 PM UTCauth requiredversion not recorded—