SweKit - Swedish validators

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How to connect

Add it to any MCP client that supports remote servers.

{
  "mcpServers": {
    "swekit-swedish-validators-2": {
      "type": "http",
      "url": "https://swekit-api.zenith-ops.workers.dev/mcp"
    }
  }
}

13 tools

• validate_personnummer

  Validate a Swedish personnummer or samordningsnummer (format, Luhn checksum, birth date, age, gender). Checks format only; does not prove the person exists.

• validate_orgnr

  Validate a Swedish organisationsnummer (or SE...01 VAT number); returns legal form hint and the derived Swedish VAT number.

• validate_bankgiro

  Validate and format a Swedish bankgiro number.

• validate_plusgiro

  Validate and format a Swedish plusgiro number.

• validate_ocr

  Validate a Swedish OCR payment reference (Luhn check digit, optional length digit).

• generate_ocr

  Generate a Swedish OCR reference (check digit, optional length digit) from a base number such as an invoice number.

• swedish_account_to_iban

  Validate a Swedish national bank account (clearing + account number, Bankgirot checksum rules) and convert it to IBAN using the official Bankinfrastruktur clearing table. Returns bank, BIC, account type, IBAN.

• validate_iban

  Validate any IBAN (ISO 13616 mod-97 + country length) and identify the bank for Swedish IBANs.

• lookup_clearing_number

  Look up bank name, BIC, IBAN id and account type for a Swedish clearing number.

• swedish_holidays

  List Swedish public holidays, eves and observances for a year (computed).

• swedish_date_info

  Weekday (sv/en), ISO week, holiday names and business-day status for a date. mode=bank treats midsommarafton, julafton and nyårsafton as non-business days.

• add_business_days

  Add (or subtract) business days to a date using Swedish holidays (e.g. payment due dates).

• count_business_days

  Count Swedish business days after "from" up to and including "to".

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