{"uid":"cap_vZMsgbGErU5TxdaQKEHwS","slug":"iban-rs-mod-97-validity-checker-36baceff","name":"IBAN RS Mod-97 Validity Checker","description":"Call when an agent needs whether an IBAN is a mod-97-valid RS number of length 22. Send JSON {\"value\":\"RS59AAAA00000000000000\"}. Exact $0.004 USDC on Base. Try unpaid POST /v1/sandbox/check-iban-rs first.","url":"https://agentshelf.syntexa.ch/v1/check-iban-rs?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":["RS59AAAA00000000000000"],"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":"0.004","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":"$0.004/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_TUDDKBle7kcMwBTvNh0C3","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.004","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 Serbian (RS) IBAN of the required 22-character length","exampleAgentPrompt":"Can you check whether this Serbian IBAN is valid: RS35105008123123123173 — I need to know if it passes the mod-97 checksum and is the correct 22-character RS format before I send a payment to it.","exampleUseCases":[{"title":"Verify payee bank account before transfer","prompt":"Before I wire money to this supplier, can you confirm that their IBAN RS35105008123123123173 is a legitimate, mod-97-valid Serbian bank account number?"},{"title":"Validate IBAN collected from a web form","prompt":"A user just entered RS56260005601001611379 as their Serbian IBAN in our onboarding form — can you validate that it's a properly formatted and mod-97-correct RS IBAN before we save it?"},{"title":"Audit a batch of RS IBANs for correctness","prompt":"I need to verify the Serbian IBAN RS11470000000013202846 from our records — please check if it's a valid 22-character RS number that passes the mod-97 check."}],"resultDescription":"Returns a boolean or structured result indicating whether the provided IBAN is a mod-97-valid Serbian RS IBAN of exactly 22 characters, along with any relevant validation details such as failure reason.","failureModes":["IBAN too short or too long (not 22 characters) — returns invalid","Country code is not RS — validation fails","Mod-97 checksum does not compute to 1 — returns invalid","Malformed or non-alphanumeric IBAN input — may return error","Empty or missing value field — request rejected","Payment of $0.004 USDC not provided — HTTP 402 response blocking the call"],"whenToPreferThis":"Use this endpoint when you specifically need to validate a Serbian (RS) IBAN using the mod-97 algorithm and ensure it meets the exact 22-character length requirement. Prefer the free sandbox endpoint POST /v1/sandbox/check-iban-rs for testing or non-production validation before incurring the $0.004 USDC per-call fee. Choose this over generic IBAN libraries when you need a hosted, auditable, pay-per-use validation service that handles RS-specific rules.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-11T18:54:46.407Z","isFirstParty":false,"canonicalSlug":"iban-rs-mod-97-validity-checker-36baceff"}