{"uid":"cap_DcwKJSmR6aW696V0tf8XU","slug":"eu-vat-check-6cf5686c","name":"EU VAT Check","description":"Validate an EU VAT number offline: country prefix, national format, and the published check-digit algorithm for the 8 countries that have one (BE, DE, FR, IT, LU, NL, PL, PT). The response says which of the two you got — checksumChecked distinguishes a verified number from a format-only pass, because they are not the same strength of answer. Registration is deliberately NOT claimed: only VIES can say whether a number is registered, and this endpoint does not call it.","url":"https://402.com.tr/api/x402/vat-check","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"pathParams":{"type":"object"},"queryParams":{"type":"object","required":["vat"],"properties":{"vat":{"type":"string","description":"VAT number"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_955pZf5k4cYD3F98GFUJc","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates an EU VAT number offline against country prefix rules, national format patterns, and check-digit algorithms for 8 countries, distinguishing format-only validation from checksum-verified results.","exampleAgentPrompt":"Can you check whether the VAT number DE811252615 is correctly formatted and passes the German check-digit algorithm?","exampleUseCases":[{"title":"Invoice validation before payment","prompt":"Before I pay this supplier invoice, can you validate their VAT number FR40303265045 — does it pass the French format rules and check-digit test?"},{"title":"Onboarding EU business partner","prompt":"We're onboarding a new Italian supplier and they gave us VAT number IT12345678901 — can you check if it's a valid format and whether the check digit verifies?"},{"title":"Pre-screening before VIES lookup","prompt":"I want to do a quick offline format check on VAT number NL123456782B01 before spending money on a live VIES registration lookup — does it pass Dutch format and checksum validation?"}],"resultDescription":"Returns a validation result indicating whether the VAT number is valid according to format rules and, where applicable, the published check-digit algorithm. The checksumChecked flag distinguishes a checksum-verified result from a format-only pass, making clear the strength of the validation. Notably, this endpoint does not check VIES registration status — it only validates structure and check digits offline.","failureModes":["Invalid or unrecognized country prefix returns format error","VAT number fails national format regex — returns invalid format","Check digit mismatch for supported countries (BE, DE, FR, IT, LU, NL, PL, PT) — returns failed checksum","Missing or empty vat query parameter returns bad request","Countries without a published check-digit algorithm return format-only result with checksumChecked=false"],"whenToPreferThis":"Use this endpoint when you need a fast, cheap, offline validation of an EU VAT number's format and check digit before making an expensive live VIES API call. It is ideal for pre-screening VAT numbers during onboarding, invoice processing, or form validation workflows. Prefer it when you only need to know if the number is structurally valid — not whether it is currently registered — and when you want the checksumChecked flag to distinguish strong from weak validation.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T06:40:33.187Z","isFirstParty":false}