Fermat for Grok
xyz.phase.ai/gateway
OpenAI-compatible LLM gateway: pay per request with an API key, signed receipt for each call.
client:Grok
transport:streamable-http
tools:7
Install Fermat in Grok
.mcp.json (in your project root)
{
"mcpServers": {
"gateway": {
"type": "http",
"url": "https://mcp.fermat.ai.phase.xyz/mcp"
}
}
}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