Grok materials materials_used_by_function
How to: Grok materials materials_used_by_function
Add materials to Grok
-
01
Open .mcp.json (in your project root) and merge this in. Keep any servers already there.
{
"mcpServers": {
"materials": {
"type": "http",
"url": "https://spacemushroom.com/mcp"
}
}
}-
02
Save the file and restart Grok.
-
03
Ask for something materials_used_by_function does. Grok lists the server's tools on connect and calls materials_used_by_function itself — you do not invoke it by name.
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04
If nothing happens, check the server is running and that materials's identifier in your config matches the one above exactly.
Grok Build reads Claude Code's .mcp.json and Claude Desktop's config unchanged, so a server you have already set up there needs nothing new. The Grok web app and X integration do not take custom servers. Grok docs
Same tool, other clients
This list was read from the server itself, by connecting to it and calling tools/list on 11 November 2026. It is what
the server actually exposes, not what its listing claims.
Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.