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NL IBAN Mod-97 Validator
x402
NL IBAN Mod-97 Validator is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-29).
Validates whether a given string is a mod-97-valid Dutch (NL) IBAN of exactly 18 characters
Price / call$0.005
Success—
StatusUnknown
How this service works
Call when an agent needs whether an IBAN is a mod-97-valid NL number of length 18. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/check-iban-nl first.
Output
A boolean or structured result indicating whether the provided string is a valid Dutch (NL) IBAN: 18 characters long and passing the ISO 7064 mod-97 checksum. May include details on which check failed if invalid.
Example use cases
Pre-payment Dutch bank account check
“Before I initiate this wire transfer, can you verify that NL91ABNA0417164300 is a legitimate mod-97-valid Dutch IBAN so I don't send money to a bad account?”
Validate user-entered NL IBAN in onboarding
“A new user just entered NL44RABO0123456789 as their bank account — can you confirm it's a properly formatted, mod-97-valid 18-character Dutch IBAN before we save it?”
Bulk invoice payment validation
“I have the IBAN NL20INGB0001234567 from an invoice — please check if it's a valid Netherlands IBAN with the correct length and mod-97 checksum before I approve the payment run.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/check-iban-nl?utm_source=zero.xyzWhen to prefer
Use this endpoint when you specifically need to validate a Dutch (NL) IBAN that must be exactly 18 characters and pass mod-97. Prefer the free sandbox endpoint POST /v1/sandbox/check-iban-nl first to avoid charges during testing. Choose this paid endpoint for production validation where reliability guarantees matter. For IBANs from other countries (PT, SE, ME, QA, SC, SI), use the corresponding country-specific sibling endpoint.
Side effects
- IBAN too short or too long (not 18 characters) — validation returns false
- Country code is not NL — returns invalid even if mod-97 passes
- Malformed input or non-alphanumeric characters — returns error or invalid
- Network timeout or payment failure (x402) — request not processed
- Empty or missing value field — returns 400 or 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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