{"uid":"cap_Y1oPydnfG6uBvXjp6EO56","slug":"iban-validator-ibancheck-hergertsynthora-com-2a33f320","name":"IBAN Validator (ibancheck.hergertsynthora.com)","description":"Validate any IBAN deterministically: ISO 13616 mod-97 checksum, country + length registry check, BBAN and bank-code extraction. Zero external deps, no hallucination. Ed25519-signed. First 3 calls FREE per wallet (X-WALLET).","url":"https://ibancheck.hergertsynthora.com/service","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"iban":{"type":"string","description":"IBAN to validate (spaces optional)"}}},"responseSchema":{"type":"json","example":{"ok":true,"niche":"iban_check","result":{"bban":"WEST12345698765432","iban":"GB82WEST12345698765432","valid":true,"length":22,"country":"GB","verdict":"valid","bank_code":"WEST","formatted":"GB82 WEST 1234 5698 7654 32","check_digits":"82","country_name":"United Kingdom","expected_length":22}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_RLL4YvYK2yslC17mNu42n","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates an IBAN string using ISO 13616 mod-97 checksum, country/length registry checks, and extracts BBAN and bank code with canonical formatting","exampleAgentPrompt":"Can you check whether GB29NWBK60161331926819 is a valid IBAN before I submit the payment?","exampleUseCases":null,"resultDescription":"Returns a structured validation result including whether the IBAN is valid, the ISO 13616 mod-97 checksum outcome, country code, expected vs actual length, extracted BBAN, bank code, and the canonically formatted IBAN string.","failureModes":["Invalid IBAN format returns validation failure with specific error reason (bad checksum, wrong length for country, unsupported country code)","Malformed JSON input returns 400 error","Missing 'iban' field returns error indicating required parameter","Wallet header missing after 3 free calls results in 402 payment required","Network timeout if service is temporarily unavailable"],"whenToPreferThis":"Use this endpoint when you need deterministic, offline-style IBAN validation with no external banking data dependencies — ideal before initiating SEPA or international payments. Prefer over general-purpose validation libraries when you need structured extraction of BBAN and bank code alongside the validity check, and when a signed, auditable result is required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:36:28.103Z","isFirstParty":false}