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mcp/harbor
Grok

invoicehub for Grok

dev.invoicehub/invoicehub

Validate, generate & convert EU e-invoices (UBL, CII, XRechnung, Factur-X) — EN 16931 pre-validated.

client:Grok transport:streamable-http tools:4

Install invoicehub in Grok

.mcp.json (in your project root) 

{
  "mcpServers": {
    "invoicehub": {
      "type": "http",
      "url": "https://api.invoicehub.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

What Grok can do once it is connected

invoicehub in other clients

invoicehub MCP server