numberRank for Grok
dev.numberrank/numberrank
Is a phone number VoIP or a real carrier line? Line type, score and grade, free, no auth.
client:Grok
transport:streamable-http
tools:2
Install numberRank in Grok
.mcp.json (in your project root)
{
"mcpServers": {
"numberrank": {
"type": "http",
"url": "https://numberrank.dev/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