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Cursor ZUGFeRD Validator validation_report

How to: Cursor ZUGFeRD Validator validation_report

client:Cursor transport:streamable-http tool:validation_report

Add ZUGFeRD Validator to Cursor

  1. 01

    Open ~/.cursor/mcp.json and merge this in. Keep any servers already there.

{
  "mcpServers": {
    "validator": {
      "url": "https://api.zugferd-validator.de/mcp"
    }
  }
}
  1. 02

    Save the file and restart Cursor.

  2. 03

    Ask for something validation_report does. Cursor lists the server's tools on connect and calls validation_report itself — you do not invoke it by name.

  3. 04

    If nothing happens, check the server is running and that ZUGFeRD Validator's identifier in your config matches the one above exactly.

Use .cursor/mcp.json in a project root instead to scope it to that project. Cursor merges both. Cursor docs

Set these first

ZUGFeRD Validator will not start until these are set, so validation_report never becomes available.

  • ZUGFERD_API_KEY

Same tool, other clients

This list was read from the server itself, by connecting to it and calling tools/list on 24 September 2026. It is what the server actually exposes, not what its listing claims.

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.