{"id":"t/vat_hu_validate","kind":"forged","name":"vat_hu_validate","description":"Offline validator for a Hungarian EU VAT number (HU + 8-digit törzsszám). Normalizes input (strips spaces/dashes, uppercases), checks the HU prefix and 8-digit length, and verifies the embedded check digit using the standard weighted (9,7,3,1,9,7,3) modulo-10 algorithm applied to the first 7 digits.","tags":["validator","vat","hungary","tax-id","offline"],"method":"POST","path":"/v1/t/vat_hu_validate","url":"https://toll402.dev/v1/t/vat_hu_validate","specUrl":"https://toll402.dev/v1/spec/t/vat_hu_validate","price":"$0.001","priceUsd":0.001,"available":true,"inputSchema":{"type":"object","properties":{"vatNumber":{"type":"string","description":"Hungarian EU VAT number, e.g. HU12345676"}},"required":["vatNumber"],"additionalProperties":false},"example":{"vatNumber":"HU12345676"},"meta":{"creator":null,"createdAt":"2026-09-09T23:36:46.536Z","calls":5,"failures":4,"network":false,"notes":"Pure offline validator: normalizes the input string (trim, uppercase, strip spaces/dashes), verifies the HU prefix and 8-digit törzsszám length via regex, then recomputes the check digit using the standard weighted (9,7,3,1,9,7,3) mod-10 algorithm over the first 7 digits and compares it to the 8th digit; no network calls are made."}}