Card number validate
Validate a payment card number (Luhn checksum) and detect the brand. Numbers are not stored or logged.
Go to this service →Our latest check (2026-10-11)
- Answering
- Yes — valid x402 payment terms
- Time to answer
- 194 ms
- Price
- $0.001 per call
- Paying buyers, last 30 days
- 3 (directory's own records)
- Paid calls, last 30 days
- 3
- Category
- Payments and on-ramps
- Address
- https://agent402.tools/api/card-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/2f0c93e08e3f.json. Paid lookup by address: GET /api/seller?resource=… ($0.001, x402).