{"uid":"cap_zHbsTWC5b46d-FI8FjAG-","slug":"tax-id-check-d7cd89f6","name":"Tax ID Check","description":"Offline tax/customs id formats: EORI, US EIN/SSN, UK NINO, AU ABN (checksum), TR VKN/TCKN (checksum), CA BN. kind= selects the scheme. A well-formed id is not proof of registration.","url":"https://402.com.tr/api/x402/tax-id-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":["kind","value"],"properties":{"kind":{"type":"string","description":"Kind"},"value":{"type":"string","description":"Identifier"}}}},"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_ZO-N49jfaitm1Zr5UI6ee","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 the format and checksum of tax/customs identifiers across multiple national schemes (EORI, US EIN/SSN, UK NINO, AU ABN, TR VKN/TCKN, CA BN) without requiring network registration lookup.","exampleAgentPrompt":"Can you check whether 12-3456789 is a valid US EIN format? Use the EIN scheme.","exampleUseCases":[{"title":"KYB onboarding tax ID check","prompt":"We're onboarding a new UK business and they gave us NI number AB123456C for their director — can you verify that NINO is correctly formatted before we proceed?"},{"title":"Australian ABN checksum validation","prompt":"Before we submit this supplier's details to our finance system, check whether the ABN 51824753556 has a valid checksum."},{"title":"Turkish company VKN verification","prompt":"We received a VKN of 1234567890 from a Turkish vendor — can you validate that it's a properly formed Turkish tax number?"}],"resultDescription":"Returns whether the submitted tax ID is well-formed and passes any applicable checksum algorithm for the selected scheme (EORI, EIN, SSN, NINO, ABN, VKN, TCKN, or CA BN). Does NOT confirm the ID is registered or active with any government registry.","failureModes":["Invalid 'kind' parameter (unsupported scheme) returns an error","Malformed or empty 'value' returns format failure","No network connectivity to the endpoint returns HTTP 5xx","Payment failure via x402 protocol returns 402 Payment Required","Whitespace or special characters in value may cause unexpected parse failures"],"whenToPreferThis":"Choose this endpoint when you need a fast, offline, per-call checksum and format validation of a tax or customs ID without standing up your own validation library. Ideal for KYB/KYC onboarding flows, invoice validation pipelines, or pre-submission checks where you need to cover multiple international schemes (UK, US, AU, TR, CA, EU) in a single unified API with per-call micro-payment pricing and no subscription.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:48:27.462Z","isFirstParty":false}