{"uid":"cap_Sdy2aq5Q3L30HCujcTnVK","slug":"gb-iban-mod-97-validator-9f730a7a","name":"GB IBAN Mod-97 Validator","description":"Call when an agent needs whether an IBAN is a mod-97-valid GB number of length 22. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/check-iban-gb first.","url":"https://agentshelf.syntexa.ch/v1/check-iban-gb?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"data":{"description":"JSON value for schema-check SKUs. Omit it on string checks such as email or IBAN."},"value":{"type":"string","examples":["GB15AAAA00000000000000"],"maxLength":20000,"minLength":1,"description":"Value to check. The route description names the format: email, phone, IBAN, postal code, VAT, national id, or similar."},"schema":{"description":"JSON Schema document for schema-check SKUs. Omit it on string checks."}}},"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_Bc7OtWupzapOy8tk31kX9","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 whether a given string is a mod-97-valid UK (GB) IBAN of exactly 22 characters","exampleAgentPrompt":"Can you check if this IBAN is a valid UK IBAN: GB29NWBK60161331926819? I need to know if it passes the mod-97 checksum and is the right length for a GB account.","exampleUseCases":[{"title":"Pre-transfer UK payment validation","prompt":"Before I send the wire, check if GB29NWBK60161331926819 is a valid UK IBAN — I want to confirm it passes the mod-97 test and is the right 22-character GB format."},{"title":"Validating user-submitted bank details","prompt":"A customer just submitted their bank details for a refund. Can you verify whether GB94BARC20201530093459 is a valid British IBAN before we process the payout?"},{"title":"Bulk data cleanup check","prompt":"I have an IBAN from a spreadsheet import: GB15MIDL40051512345678 — is it a legitimate mod-97-valid GB IBAN of 22 characters that I can safely store?"}],"resultDescription":"Returns a boolean or structured result indicating whether the supplied string is a mod-97-valid GB IBAN of exactly 22 characters, confirming both checksum correctness and country-specific length compliance.","failureModes":["IBAN not GB prefix — endpoint only validates GB IBANs","IBAN wrong length — GB IBANs must be exactly 22 characters","Invalid characters in input — IBANs must be alphanumeric","Empty or missing value field","Non-string or overly long input rejected","Network error or payment failure (x402 USDC payment required)"],"whenToPreferThis":"Use this endpoint when you need a deterministic, offline mod-97 checksum validation specifically for GB (UK) IBANs of length 22. Prefer this over general IBAN validators when you only need GB validation and want a micro-cost API call. Use the free sandbox endpoint (/v1/sandbox/check-iban-gb) first for testing. Do not use for non-GB IBANs (DE, FR, etc.) or for full bank reachability/account existence checks.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T03:46:03.341Z","isFirstParty":false,"canonicalSlug":"gb-iban-mod-97-validator-9f730a7a"}