Quartermaster HTTP Check
Liveness/latency pre-flight for a URL: is it up, HTTP status and class, response latency in ms, whether it redirects (and where), content-type and server.
Go to this service →Our latest check (2026-10-11)
- Answering
- Yes — valid x402 payment terms
- Time to answer
- 35 ms
- Price
- $0.001 per call
- Paying buyers, last 30 days
- 4 (directory's own records)
- Paid calls, last 30 days
- 4
- Category
- Travel: flights
- Address
- https://quartermaster.surewhynot.app/v1/http-check
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/ca56f66cfadd.json. Paid lookup by address: GET /api/seller?resource=… ($0.001, x402).