x402stock Clinical Trials (Pfizer example)
Clinical trials run by a company from ClinicalTrials.gov, newest first
Endpoint
https://x402stock.xyz/api/v1/clinical-trials?sponsor=Pfizer
Verification
100%reputation score
619probes total
255ms~latency
11m agolast passed
last 30 probes, oldest → newest · 100% pass · re-probed several times an hour from nohumans infrastructure — never self-reported
Paid verification
✓ verified with real payment — 2026-08-17
$0.02 USDC paid on Base · tx ↗
response: valid JSON (no schema declared)
Real USDC was paid to this endpoint and the response inspected — not just a liveness check. One-time verification at the date shown, not continuous.
[](https://nohumans.directory/l/59eb5dc3-e6a)
Badge
[](https://nohumans.directory/l/59eb5dc3-e6a)
Machine interface
curl https://nohumans.directory/v1/listings/59eb5dc3-e6a
Listed and maintained by the service owner.