MCP server

@conformo/mcp-server gives an AI agent seven tools: create_invoice, create_invoice_pdf, validate_invoice, convert_invoice, parse_invoice, get_country_requirements and explain_validation_rule. Validation is the official Schematron and XSD, run on your machine. Money is always integer minor units. The full reference, including HTTP mode and remote deployment, is in the package README.

It is free, needs no account or API key, and no tool makes a network call, so invoices stay on your computer. Once it is added, ask your agent things like "Make an XRechnung for Stadt Musterstadt, Leitweg-ID 04011000-1234512345-06, 10 hours of consulting at 95 EUR, and check it", "Is this invoice valid? Explain every error and fix it" or "What does BR-DE-15 mean?".

Claude Desktop

Settings, Developer, Edit Config, then add to claude_desktop_config.json:

{
  "mcpServers": {
    "conformo": {
      "command": "npx",
      "args": ["-y", "@conformo/mcp-server"]
    }
  }
}

On Windows, if npx is not found, use "command": "cmd" with "args": ["/c", "npx", "-y", "@conformo/mcp-server"].

Claude Code

claude mcp add conformo -- npx -y @conformo/mcp-server

Or check it into the project as .mcp.json:

{
  "mcpServers": {
    "conformo": {
      "command": "npx",
      "args": ["-y", "@conformo/mcp-server"]
    }
  }
}

Cursor

.cursor/mcp.json in the project, or ~/.cursor/mcp.json for every project:

{
  "mcpServers": {
    "conformo": {
      "command": "npx",
      "args": ["-y", "@conformo/mcp-server"]
    }
  }
}

Then ask, for example: "Make an XRechnung for 8 hours of maintenance at EUR 95 for Stadt Beispielhausen, Leitweg-ID 04011000-1234512345-06, and check it."