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Grok

Factur-X e-invoicing for Grok

io.github.leborgneantoine/facturx

Generate, validate and read Factur-X / EN 16931 e-invoices (France, EU): PDF/A-3, CII, UBL 2.1.

client:Grok transport:streamable-http tools:4

Install Factur-X e-invoicing in Grok

.mcp.json (in your project root)

{
  "mcpServers": {
    "facturx": {
      "type": "http",
      "url": "https://facturx.orvel.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

Factur-X e-invoicing in other clients