Toll402
Offline validator for an Austrian UID (VAT) number: format ATU followed by 8 digits. Normalizes input, checks structure and verifies the weighted modulo-10 check digit algorithm (weights 1,2,1,2,1,2,1 on the first 7 digits, digit-sum reduct
Go to this service →Our latest check (2026-10-11)
- Answering
- Yes — valid x402 payment terms
- Time to answer
- 142 ms
- Price
- $0.001 per call
- Paying buyers, last 30 days
- 1 (directory's own records)
- Paid calls, last 30 days
- 1
- Category
- Developer tools and utilities
- Address
- https://toll402.dev/v1/t/vat_at_validate
Accuracy: paid answers checked against an independent record
Not yet in our paid checks. A seller we have not checked has neither passed nor failed.
For agents
This page as JSON: /sellers/08924f57c79c.json. Paid lookup by address: GET /api/seller?resource=… ($0.001, x402).