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IBAN RS Mod-97 Validity Checker
x402
IBAN RS Mod-97 Validity Checker is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-11).
Validates whether a given IBAN is a mod-97-valid Serbian (RS) IBAN of the required 22-character length
Price / call$0.004
Success—
StatusUnknown
How this service works
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.
Output
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.
Example use cases
Verify payee bank account before transfer
“Before I wire money to this supplier, can you confirm that their IBAN RS35105008123123123173 is a legitimate, mod-97-valid Serbian bank account number?”
Validate IBAN collected from a web form
“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?”
Audit a batch of RS IBANs for correctness
“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.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/check-iban-rs?utm_source=zero.xyzWhen to prefer
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.
Side effects
- 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
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| data | — | JSON value for schema-check SKUs. Omit it on string checks such as email or IBAN. |
| value | string | Value to check. The route description names the format: email, phone, IBAN, postal code, VAT, national id, or similar. |
| schema | — | JSON Schema document for schema-check SKUs. Omit it on string checks. |
Tags
x402
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