21st.dev MCP server

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

Category: Dev tools

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Source: official MCP Registry entry dev.21st/mcp

Direct MCP URL and setup

CLAUDE CODE

claude mcp add --transport http dev-21st-mcp https://21st.dev/api/mcp

CURSOR / VS CODE (mcp.json)

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