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Dutch RSIN Validator
x402
Dutch RSIN Validator is a paid API for AI agents from toll402.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Validates and normalizes a Dutch RSIN (Rechtspersonen Samenwerkingsverbanden Informatie Nummer) 9-digit legal-entity tax identifier using an offline elfproef (mod-11) check
Price / call$0.001
Success—
StatusUnknown
How this service works
Offline validator for a Dutch RSIN (Rechtspersonen Samenwerkingsverbanden Informatie Nummer), a 9-digit legal-entity tax identifier. Normalizes input (strips spaces/dots/dashes) and applies the elfproef (mod-11 check): weights 9,8,7,6,5,4,3,2 on the first 8 digits, minus the 9th digit, must be divisible by 11.
Output
Returns a validation result indicating whether the RSIN passes the elfproef mod-11 check, along with the normalized 9-digit form of the identifier (spaces, dots, and dashes stripped). Computed entirely offline with no external lookups.
Example use cases
KYB onboarding RSIN check
“Before we onboard this Dutch company, can you validate their RSIN 813284872 to make sure it passes the elfproef check and is properly formatted?”
Bulk supplier data cleanup
“We received a spreadsheet of Dutch supplier RSINs and some have spaces or dashes in them — can you validate and normalize this one: 81-32.84872?”
Legal entity registration verification
“I need to verify that the RSIN '006033886' we have on file for this Netherlands legal entity is actually a valid identifier before submitting the compliance report.”
Technical details
Endpoint
POSThttps://toll402.dev/v1/t/rsin_nl_validateWhen to prefer
Choose this endpoint when you need a fast, offline, deterministic check of a Dutch RSIN for format and elfproef validity — ideal for KYB pipelines, CRM data cleaning, or compliance workflows. It does not query any Dutch government registry, so it confirms mathematical validity only, not that the entity actually exists or is active. Prefer this over manual checks or general-purpose validators when you need per-call pricing and no external dependencies.
Side effects
- RSIN fails elfproef mod-11 check — returns invalid status
- Input is not 9 digits after normalization — format error
- Non-numeric characters remain after stripping — parse error
- Missing required 'rsin' field in request body — 400 Bad Request
- Payment not provided or insufficient — 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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