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mcp/harbor
Grok

callwright for Grok

com.topness/callwright

Self-hosted MCP voice agent that places phone calls on your behalf via Retell.

client:Grok transport:stdio runtime:npm

Install callwright in Grok

.mcp.json (in your project root)

Held in this page only — never stored, logged, or sent anywhere but back to your screen. 

{
  "mcpServers": {
    "callwright": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "callwright"
      ],
      "env": {
        "RETELL_API_KEY": "<RETELL_API_KEY>",
        "MCP_AUTH_TOKEN": "<MCP_AUTH_TOKEN>",
        "PORT": "<PORT>",
        "CALLWRIGHT_DATA_DIR": "<CALLWRIGHT_DATA_DIR>",
        "CALLWRIGHT_PUBLIC_URL": "<CALLWRIGHT_PUBLIC_URL>",
        "CLAUDE_ROUTINE_URL": "<CLAUDE_ROUTINE_URL>",
        "CLAUDE_ROUTINE_TOKEN": "<CLAUDE_ROUTINE_TOKEN>"
      }
    }
  }
}

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

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