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Latamref Tax ID Validator
x402
Latamref Tax ID Validator is a paid API for AI agents from latamref.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-29).
Validates Latin American tax IDs and VAT numbers using official format rules and check-digit algorithms, returning validity, normalised form, ID type, and failure reason
Price / call$0.003
Success—
StatusUnknown
How this service works
Tax-ID / VAT-number validation for Latin American countries: valid/invalid, normalised form, id type and the reason it failed. Format plus the official check-digit algorithm where the tax authority publishes one; every rule cited to an official source with its date. Pure algorithmic, no registry lookup
Output
Returns a JSON object indicating whether the tax ID is valid or invalid, the normalised (canonical) form of the ID, the ID type (e.g. CPF, CNPJ, RUT, NIT, RFC), and if invalid, the specific reason for failure (e.g. check-digit mismatch, wrong length, invalid characters). All rules are algorithmically applied per official tax authority specifications with cited sources — no live registry lookup is performed.
Example use cases
Onboarding KYC tax ID check
“We're onboarding a new Chilean supplier and they gave us RUT 76.354.771-K — can you verify that's a valid Chilean tax ID before we set them up in our system?”
Invoice VAT number validation
“Before we issue this invoice, check whether the Colombian NIT 900185264-1 is correctly formatted and passes the official check-digit algorithm.”
Bulk data cleansing pipeline
“I have a Mexican RFC 'GODE561231GR8' from our customer database — validate it and tell me its normalised form and ID type so I can clean up our records.”
Technical details
Endpoint
GEThttps://latamref.dev/v1/taxid/validate?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need fast, offline algorithmic validation of Latin American tax IDs (CPF, CNPJ, RUT, NIT, RFC, RUC, CUIT, etc.) with check-digit verification cited to official sources. Prefer it over generic VAT validators that lack LatAm-specific rules, and over registry-lookup services when you only need format/algorithm correctness rather than live registration status. Ideal for KYC pipelines, invoice validation, and data cleansing where sub-second latency and no PII transmission to a registry is important.
Side effects
- Unsupported country code returns an error indicating the country is not in coverage
- Malformed or empty id parameter returns a 400-level error
- Country code not matching a supported LatAm jurisdiction returns an unsupported country error
- Non-tax-ID strings (random text) return invalid with a format-mismatch failure reason
- Network or server errors return 5xx responses
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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