Klarbon

Connect Remote server

claude mcp add --transport http klarbon https://klarbon.app/mcp --header "Authorization: Bearer <YOUR_API_KEY>"

{
  "mcpServers": {
    "klarbon": {
      "url": "https://klarbon.app/mcp",
      "headers": {
        "Authorization": "Bearer <YOUR_API_KEY>"
      }
    }
  }
}

{
  "servers": {
    "klarbon": {
      "type": "http",
      "url": "https://klarbon.app/mcp",
      "headers": {
        "Authorization": "Bearer <YOUR_API_KEY>"
      }
    }
  }
}

Settings > Connectors > Add custom connector
URL: https://klarbon.app/mcp

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools 6 found in our last check

• list_formats

  Lists every e-invoice and bank statement format Klarbon handles, with what each can do now: open, check, convert from, convert to, make. Free, no API key needed.

• open_invoice

  Reads an e-invoice (XRechnung, ZUGFeRD, Factur-X, Peppol BIS, UBL, CII and more) into structured data: parties, lines, totals, VAT, payment details. Optionally returns print-ready HTML. Free; without an API key the anonymous daily limit applies. Files are processed for the reque…

• check_invoice

  Validates an e-invoice against EN 16931 and its national rules (XRechnung, Peppol BIS and others), with each finding explained in plain words and how to fix it. With country, also applies that country's national rules on top of EN 16931 (France: the CTC rules), only when asked;…

• convert_invoice

  Converts an e-invoice to another format (for example UBL to XRechnung, or CII to a Factur-X PDF) and validates the result; only a valid file is returned. Costs 1 call per invoice from the account's API balance, or 1 credit once the API balance is empty, charged only on success.…

• convert_bank_statement

  Converts a bank statement file (CAMT.053, MT940, CODA, Norma 43, CFONB 120, BAI2, OFX, QIF and more) to another format such as CAMT.053, MT940, CSV or Excel, and checks that the balances reconcile. When the file leaves something open, such as the date order or the opening balanc…

• check_vat_numbers

  Checks up to 25 EU VAT numbers (and Northern Ireland's XI numbers) in the European Commission's VIES service: valid or not valid now, with the registered name and address where the member state gives them. Each number's format and published check digits are checked first, and on…

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