{"uid":"cap_0qs42L-kv-F6FoHkQMI7q","slug":"eu-vat-number-format-validator-ee5ef8a6","name":"EU VAT Number Format Validator","description":"EU VAT number format validation for all member states (plus Spanish check digit). Does not query VIES.","url":"https://api.vextorium.com/v1/eu-vat-validate?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"number":{"type":"string","description":"VAT number with country prefix, e.g. ESB12345674"}}},"responseSchema":{"type":"json","example":{"note":"Format validation (and check digit for ES). It does not confirm the number is registered in VIES.","valid":true,"number":"ESB12345674","country":"ES","valid_format":true,"valid_control_digit":true}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","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":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_HW47qBvfmhil0LPt3_NI6","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates the format of EU VAT numbers for all member states, with Spanish check digit verification, without querying VIES.","exampleAgentPrompt":"Check if the VAT number ESB12345674 is correctly formatted — I need to know whether it passes the EU format rules and whether the Spanish check digit is valid.","exampleUseCases":[{"title":"E-commerce checkout VAT validation","prompt":"Before I finalize this B2B order, can you verify that the VAT number the customer entered — DE811234567 — is correctly formatted for Germany?"},{"title":"Supplier onboarding compliance check","prompt":"We just received a new Spanish supplier's tax ID: ESB12345674. Can you confirm whether the format is valid and whether the check digit checks out?"},{"title":"Bulk invoice pre-flight validation","prompt":"I'm about to generate invoices for a French client using VAT number FR83404833048 — can you quickly check that the format is correct before I send them out?"}],"resultDescription":"Returns a JSON object with: a boolean 'valid' (overall result), 'valid_format' (format check result), 'valid_control_digit' (check digit result, especially relevant for Spanish VAT), the normalized 'number', the detected 'country' code (ISO 2-letter), and a 'note' clarifying that this is a format-only check and does not confirm VIES registration.","failureModes":["Invalid or missing country prefix returns invalid format result","Malformed JSON body or missing 'number' field causes request error","Unsupported or non-EU VAT prefix may return null or invalid","Number with correct format but wrong check digit returns valid_format=true, valid_control_digit=false","Network timeout or service unavailability returns HTTP error"],"whenToPreferThis":"Use this endpoint when you need fast, offline-style EU VAT format validation without triggering a VIES database lookup — ideal for real-time checkout flows, form validation, or pre-screening supplier VAT numbers before a full VIES query. It is especially valuable when you need Spanish check digit verification. Choose VIES-querying services instead when you need to confirm that the number is actually registered and active.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-15T12:38:12.887Z","isFirstParty":false,"canonicalSlug":"eu-vat-number-format-validator-6c00cc1b"}