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Toll402 Romanian CUI Validator
x402
Toll402 Romanian CUI 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 a Romanian CUI (company tax ID) using offline checksum verification with weighted digit algorithm
Price / call$0.001
Success—
StatusUnknown
How this service works
Offline validator for a Romanian CUI (company tax ID). Strips an optional 'RO' prefix, applies weights 7-5-3-2-1-7-3-2 to the digits preceding the check digit (right-to-left), sums the weighted products, multiplies by 10, takes mod 11 (mapping a remainder of 10 to 0), and compares the result to the supplied check digit.
Output
Returns a validation result indicating whether the supplied Romanian CUI passes the weighted checksum algorithm — strips any 'RO' prefix, applies weights 7-5-3-2-1-7-3-2, multiplies sum by 10, takes mod 11, and confirms the check digit matches.
Example use cases
Pre-onboarding Romanian vendor check
“Before I add this Romanian supplier to our system, can you verify their CUI number RO24561873 is actually valid?”
E-commerce Romanian B2B form validation
“A customer entered 'RO12345678' as their Romanian company tax ID on our checkout form — is that a valid CUI?”
Bulk invoice data cleanup
“I have a Romanian company CUI '987654321' from an old invoice — can you tell me if the checksum on it is correct?”
Technical details
Endpoint
POSThttps://toll402.dev/v1/t/cui_ro_validateWhen to prefer
Choose this endpoint when you need fast, offline, deterministic validation of Romanian CUI numbers without making external lookups to Romanian government databases. Ideal for form validation, batch data cleaning, or pre-screening before expensive live lookups. Use the sibling business-verification endpoint if you also need to confirm the company is actively registered.
Side effects
- CUI contains non-numeric characters after prefix stripping
- CUI is fewer than 2 or more than 9 digits
- Missing required 'cui' field in request body
- Checksum mismatch returns invalid result (not an error, but a failed validation)
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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