x402 Doctor
Is this x402 endpoint safe to pay? Call it before your AI agent pays an endpoint it has not used before. Returns a go / caution / no_go verdict, the recommended payment option (network and amount) and the reasons (payment would fail, over y
Go to this service →Our latest check (2026-10-11)
- Answering
- Yes — valid x402 payment terms
- Time to answer
- 248 ms
- Price
- not stated
- Paying buyers, last 30 days
- 5 (directory's own records)
- Paid calls, last 30 days
- 21
- Category
- Payments and on-ramps
- Address
- https://x402-doctor.fizzl.eu/api/v1/preflight
Accuracy
Accuracy scores are published once a seller has enough paid checks against an independent record (at least 7 scored answers over at least 7 days). Until then no score is shown, and a missing score is never a pass.
For agents
This page as JSON: /sellers/b9b00038c71b.json. Paid lookup by address: GET /api/seller?resource=… ($0.001, x402).