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Croatian IBAN Validator (HR, length 21)
x402
Croatian IBAN Validator (HR, length 21) is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-29).
Validates whether a given string is a mod-97-compliant Croatian (HR) IBAN of exactly 21 characters.
Price / call$0.002
Success—
StatusUnknown
How this service works
Call when an agent needs whether an IBAN is a mod-97-valid HR number of length 21. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/check-iban-hr first.
Output
Returns a boolean validity result indicating whether the submitted string is a properly formatted Croatian IBAN: exactly 21 characters, starts with 'HR', and passes the mod-97 checksum algorithm.
Example use cases
Pre-payment Croatian supplier validation
“Before I wire funds to our Croatian supplier, can you verify that HR1710010051863000160 is a legitimate mod-97-valid Croatian IBAN with the correct 21-character length?”
Onboarding form bank account check
“A new user on our platform entered HR3324020061100147326 as their Croatian bank account — can you confirm it's a properly formatted and mod-97-valid HR IBAN before we save it?”
Batch invoice data quality check
“I have an invoice from a Croatian vendor with IBAN HR6623400091110227672 — can you validate it's a correctly structured 21-character HR IBAN before we approve payment?”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/check-iban-hr?utm_source=zero.xyzWhen to prefer
Use this endpoint when you specifically need to validate a Croatian (HR) IBAN. It is narrowly scoped to HR IBANs of length 21, making it precise and cheap ($0.002 USDC). If the IBAN country is unknown, you'd need a general IBAN validator. Prefer the free sandbox POST /v1/sandbox/check-iban-hr endpoint during development and testing before spending on the paid version.
Side effects
- IBAN fails mod-97 checksum — returns invalid
- IBAN length is not exactly 21 characters — returns invalid
- IBAN does not start with HR country code — returns invalid
- Empty or missing input string — returns error
- Input exceeds maximum allowed length — returns validation error
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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