{"uid":"cap_0-XQ4aBMt5ORa2vkz6GAi","slug":"agentshelf-spanish-iban-validator-9769b6cf","name":"AgentShelf Spanish IBAN Validator","description":"Call when an agent needs whether an IBAN is a mod-97-valid ES number of length 24. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/check-iban-es first.","url":"https://agentshelf.syntexa.ch/v1/check-iban-es?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":["ES73AAAA0000000000000000"],"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":"0.003","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_rwRSKaoMtneQaheky174N","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","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 IBAN is a mod-97-valid Spanish (ES) IBAN of exactly 24 characters","exampleAgentPrompt":"Can you check whether ES9121000418450200051332 is a valid Spanish IBAN — specifically that it's 24 characters long and passes the mod-97 check?","exampleUseCases":[{"title":"Pre-payment Spanish IBAN sanity check","prompt":"Before I wire this payment to our supplier in Madrid, can you verify that ES2430045522862500000001 is a properly formatted and mod-97-valid Spanish IBAN?"},{"title":"Bulk onboarding bank account verification","prompt":"We're onboarding a new Spanish vendor and they gave us ES7620770024003102575766 as their bank account — can you confirm it's a legitimate ES IBAN with the right length and checksum?"},{"title":"Form input validation for Spanish accounts","prompt":"A user just entered ES5220805801101400014300 into our payment form — can you validate that it's a correctly structured Spanish IBAN before we let them proceed?"}],"resultDescription":"Returns a boolean or structured result indicating whether the provided IBAN is a valid Spanish (ES) IBAN: exactly 24 characters long, starts with 'ES', and passes the mod-97 checksum algorithm.","failureModes":["IBAN not 24 characters — returns invalid or length error","IBAN does not start with ES country code — returns invalid","Mod-97 checksum fails — returns invalid with checksum error","Empty or missing value field — returns bad request","Value exceeds maxLength 20000 — returns error","Network or service unavailability — returns 5xx error"],"whenToPreferThis":"Use this endpoint when you need a deterministic, algorithmic check that an IBAN is structurally valid for Spain (ES prefix, 24-character length, mod-97 checksum) without any network lookups or LLM inference. Ideal before initiating payments or onboarding Spanish bank accounts. Try the free sandbox endpoint POST /v1/sandbox/check-iban-es first; fall back to this paid endpoint when the sandbox is unavailable or when production verification is required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T06:50:13.753Z","isFirstParty":false,"canonicalSlug":"agentshelf-spanish-iban-validator-9769b6cf"}