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mcp/harbor
Verified official

R3 MCP

v1.2.0

org.r3js/r3

Build interactive 3D web apps — scenes, physics, audio and music — from composable components.

transport:streamable-http
Website

Target client

run in your project directory 

claude mcp add --transport http r3 https://mcp.r3js.org/mcp

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs

This listing does not declare its tools. Connect the server and your client will discover them on the handshake.