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mcp/harbor
Grok

FacturX API for Grok

com.facturxapi/mcp

Official MCP server for the FacturX API: dry run, Factur-X conversion, validation, rule lookup.

client:Grok transport:stdio runtime:pypi

Install FacturX API in Grok

.mcp.json (in your project root)

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{
  "mcpServers": {
    "mcp": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "facturx-mcp"
      ],
      "env": {
        "FACTURX_API_KEY": "<FACTURX_API_KEY>",
        "FACTURX_BASE_URL": "<FACTURX_BASE_URL>"
      }
    }
  }
}

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

FacturX API in other clients

FacturX API MCP server