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Toll402 LATAM Tax ID Validator (CUIT/CUIL, RUT, NIT)
x402
Toll402 LATAM Tax ID Validator (CUIT/CUIL, RUT, NIT) 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).
Offline validation of South American tax IDs — Argentine CUIT/CUIL, Chilean RUT, and Colombian NIT — checking check-digit correctness and returning a normalized formatted value.
Price / call$0.001
Success—
StatusUnknown
How this service works
Offline validator for South American tax IDs: Argentine CUIT/CUIL (11-digit check digit algorithm), Chilean RUT (mod-11 check digit, 0-9 or K), and Colombian NIT (mod-11 verification digit with DIAN weights). Returns whether the check digit matches and a normalized/formatted value.
Output
Returns a JSON object with a boolean 'ok' field indicating whether the check digit is valid, along with a normalized and formatted representation of the provided tax ID.
Example use cases
Validating supplier tax ID before payment
“Before we pay this Argentine supplier, can you verify that their CUIT 27-38492847-4 is valid and correctly formatted?”
Chilean RUT check for KYC onboarding
“We're onboarding a Chilean customer who provided RUT 12.345.678-9 — can you validate whether the check digit is correct?”
Colombian NIT verification for invoice compliance
“This Colombian company invoice has NIT 900123456-7 on it — can you verify if that NIT passes the DIAN check digit validation?”
Technical details
Endpoint
POSThttps://toll402.dev/v1/t/latam_tax_id_validateWhen to prefer
Choose this endpoint when you need lightweight, fast, offline check-digit validation for Argentine CUIT/CUIL, Chilean RUT, or Colombian NIT numbers without relying on government registry lookups. Ideal for KYC pipelines, invoice validation, supplier onboarding, or form validation where format correctness is the primary requirement.
Side effects
- Malformed or non-numeric input may return a validation error
- Unsupported country tax ID types will not be recognized
- Missing required 'type' field specifying the ID kind will cause request failure
- IDs with incorrect digit count may fail before check-digit computation
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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