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IBAN DK Validator (Mod-97, Length 18)
x402
IBAN DK Validator (Mod-97, Length 18) is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-29).
Validates whether a given IBAN string is a mod-97-valid Danish (DK) IBAN of exactly 18 characters
Price / call$0.004
Success—
StatusUnknown
How this service works
Call when an agent needs whether an IBAN is a mod-97-valid DK number of length 18. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/check-iban-dk first.
Output
Returns a boolean or structured result indicating whether the provided IBAN string is a valid Danish (DK-prefixed) IBAN: exactly 18 characters long and passing the ISO 7064 mod-97 checksum algorithm.
Example use cases
Pre-payment IBAN sanity check
“Before I wire money to this Danish supplier, can you verify that their IBAN DK9520000123456789 is a properly formatted and mod-97-valid Danish IBAN?”
Onboarding bank detail verification
“We're onboarding a new Danish contractor and they gave us the IBAN DK5000400440116243 — can you confirm it's a valid 18-character DK IBAN that passes the mod-97 checksum?”
Bulk payout pre-validation
“I have a Danish payee IBAN DK3120000000193757 I need validated before adding them to our payout list — is it a valid mod-97 DK IBAN of the right length?”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/check-iban-dk?utm_source=zero.xyzWhen to prefer
Use this endpoint when you specifically need to validate a Danish (DK) IBAN for correctness — both the exact 18-character length and the mod-97 checksum. Prefer the free sandbox POST /v1/sandbox/check-iban-dk first to avoid the $0.004 USDC charge. Do not use this for IBANs from other countries; choose a country-agnostic IBAN validator for non-DK bank numbers.
Side effects
- IBAN is not DK-prefixed — endpoint only validates Danish IBANs
- IBAN length is not 18 characters — fails length check
- Mod-97 checksum fails — IBAN is structurally invalid
- Input string is empty or exceeds schema limits — rejected by input validation
- Malformed input (non-string value) causes schema 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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