{"uid":"cap_FezV5kuFh871RzUNklLH1","slug":"eu-vat-number-offline-validator-64bb83e6","name":"EU VAT Number Offline Validator","description":"EU VAT number validation for agents: per-country format rules and check-digit algorithms (DE, ES, FR, IT, NL, PT, BE, AT, PL, SE...) executed offline — deterministic, no VIES dependency, instant JSON verdict with country and normalized number. $0.001 USDC via x402 on Base. SYNTHORA.","url":"https://vat-validate.hergertsynthora.com/service","method":"POST","headers":{},"bodySchema":null,"responseSchema":{"type":"json","example":{"ok":true,"niche":"vat-validate","result":{"valid":true,"country":"DE","normalized":"DE811907980","checkdigit_ok":true},"provenance":{"url":"algorithmic:eu-vat-checkdigits","source":"EU VAT Number Validator"}}},"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":"down","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_Jh-HSUg7H-mpuiciZ6T5f","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 EU VAT numbers offline using per-country format rules and check-digit algorithms, returning a deterministic JSON verdict with normalized number and country.","exampleAgentPrompt":"Can you validate this VAT number for me — DE811197733 — and tell me if it's a legitimate German VAT number and what the normalized format is?","exampleUseCases":null,"resultDescription":"A JSON object containing a boolean validity verdict, the detected country code, and the normalized VAT number string. Returned instantly with no VIES dependency.","failureModes":["Invalid VAT format returns verdict false with country and normalization where possible","Unknown country prefix returns error or false verdict","Malformed input string may return parsing error","x402 payment failure returns upstream error (no charge on upstream failure)","Missing vat field in request body returns validation error"],"whenToPreferThis":"Prefer this endpoint when you need fast, offline, deterministic EU VAT validation without depending on VIES or any external government API. Ideal for real-time invoice processing, onboarding flows, or batch data enrichment where uptime and latency matter. Supports DE, ES, FR, IT, NL, PT, BE, AT, PL, SE and more.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:36:27.671Z","isFirstParty":false}