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Ausref Tax ID Validator — Australasia
x402
Ausref Tax ID Validator — Australasia is a paid API for AI agents from ausref.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-29).
Validates tax IDs and VAT numbers for Australasian countries using official check-digit algorithms, returning validity status, normalised form, ID type, and failure reason
Price / call$0.003
Success—
StatusUnknown
How this service works
Tax-ID / VAT-number validation for Australasian 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 detected ID type (e.g. ABN, TFN, IRD), and if invalid, a human-readable reason for failure citing the specific rule or check-digit algorithm that was violated. All rules are traceable to official government sources with dates.
Example use cases
Supplier onboarding ABN check
“Before I add this new Australian supplier to our system, check whether their ABN '83 914 571 673' is valid and give me its normalised form.”
NZ IRD number verification
“I have a New Zealand contractor claiming their IRD number is 49-091-850 — can you verify it's a valid NZ tax ID and tell me if the check digit passes?”
Bulk invoice compliance for Fiji
“We're about to send an invoice to a Fijian business and they gave us TIN 'FJ123456789' — validate it against Fiji's official rules and let me know if it's legitimate or why it might fail.”
Technical details
Endpoint
GEThttps://ausref.dev/v1/taxid/validate?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need algorithmic tax ID validation for Australasian countries (Australia, New Zealand, Fiji, Papua New Guinea, and others in Oceania) without requiring a live registry lookup. Ideal for onboarding flows, invoice validation, and compliance checks where you need the official check-digit result and a cited failure reason. Prefer over generic international VAT validators when the country is in Oceania and you need source-cited, jurisdiction-specific rules.
Side effects
- Unsupported country code — country not in Ausref coverage list returns an error or empty result
- Malformed query parameters — missing 'country' or 'id' param returns 400
- Ambiguous ID format that cannot be parsed returns invalid with a parse-failure reason
- Network timeout or service unavailability returns 5xx
- Payment not provided or insufficient balance returns 402
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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