Claude Code R3 Resource/PHYSICS_USAGE.md
How to: Claude Code R3 PHYSICS_USAGE.md
Add R3 to Claude Code
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Run this in your project directory.
claude mcp add --transport http r3 https://mcp.r3js.org/mcp-
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Restart your session so the server is picked up.
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PHYSICS_USAGE.md is surfaced wherever your client lets you attach context. It is context to attach, not an action to run.
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If it does not appear, check that R3 is connected and that you are looking at its resources rather than its tools.
Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs
Same resource, other clients
Read from the server itself, by connecting to it and calling resources/list on 14 November 2026.
A listing does not declare its resources, so asking is the only way to know them, and this
is what the server actually offers rather than what its listing claims. Names only are
stored; connect the server for each resource's type and contents.