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mcp/harbor
Grok

Due Date for Grok

com.gumballtools/due-date

Estimate a due date from LMP, conception, or ultrasound, with ACOG redating rules.

client:Grok transport:streamable-http tools:1

Install Due Date in Grok

.mcp.json (in your project root) 

{
  "mcpServers": {
    "due-date": {
      "type": "http",
      "url": "https://due-date.gumballtools.com/api/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

What Grok can do once it is connected

Due Date in other clients

Due Date MCP server