Official MCP RegistryHosted server21st.devv1.0.0

21st.dev

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Connect to Claude Code

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

Vendor-hosted remote server: nothing to install locally. If it uses OAuth, Claude opens the vendor login on first use.

Endpoints

Published in the official MCP registry as “dev.21st/mcp”. Verified through the vendor namespace.