{"uid":"cap_Dgtnf80kd9wYWzKRUuYh3","slug":"chainverdict-xyz-eu-vat-number-format-validator-975f5bb9","name":"chainverdict.xyz EU VAT Number Format Validator","description":"Validate an EU VAT number's structure and per-country check digits. Format only — no VIES lookup, so it does not confirm the registration is active or belongs to the named trader.","url":"https://chainverdict.xyz/v1/validate/vat/:vat","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","required":["vat"],"properties":{"vat":{"type":"string","description":"EU VAT number incl. country prefix"}}},"queryParams":{"type":"object","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","additionalProperties":true}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_EgHaaa_v1FlqU6PQzcBqT","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates the structure and check digits of an EU VAT number by country-specific rules, without performing a live VIES registry lookup.","exampleAgentPrompt":"Can you check if the VAT number DE345789013 has a valid format and correct check digits — just the structure check, I don't need a live registry lookup.","exampleUseCases":[{"title":"E-commerce checkout VAT validation","prompt":"Before I save this customer's billing details, check if the VAT number they entered — FR83404833048 — is structurally valid and has the right check digits."},{"title":"Finance team invoice processing","prompt":"We received an invoice with VAT number IT12345678901 — can you verify whether that number has the correct format and check digits for Italy before we process the payment?"},{"title":"SaaS onboarding B2B verification","prompt":"A new business just signed up and entered NL123456789B01 as their VAT number — can you do a quick format and check digit validation on it so we know it's at least structurally plausible?"}],"resultDescription":"Returns whether the EU VAT number passes structural validation and check digit rules for the given country prefix, without confirming active VIES registration or trader identity.","failureModes":["Malformed or missing VAT number path parameter returns an error","Unrecognized country prefix may return invalid or unsupported country error","VAT number with correct format but belonging to an inactive or non-existent business will still pass (format-only check)","Non-EU VAT numbers are not supported","Network timeout or service unavailability returns a 5xx error"],"whenToPreferThis":"Choose this endpoint when you need a fast, cheap ($0.001), offline-style format check of an EU VAT number — e.g., during form validation, invoice ingestion, or pre-screening — and do not need to confirm the number is actively registered in VIES or belongs to a specific named trader. It is not a substitute for a live VIES lookup when regulatory confirmation of active status is required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:51:44.714Z","isFirstParty":false}