SofortFax – Faxen mit KI (Login) for Grok
de.sofortfax/fax-oauth
Fax from ChatGPT/Claude with OAuth sign-in: pay per fax or KI credits. DE/AT + 40 countries.
client:Grok
transport:streamable-http
Install SofortFax – Faxen mit KI (Login) in Grok
.mcp.json (in your project root)
{
"mcpServers": {
"fax-oauth": {
"type": "http",
"url": "https://sofortfax.de/api/mcp-oauth.php"
}
}
}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