the402 endpoint detail

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clinicalintelpulse.theaslangroupllc.com clinical trial-check

https://clinicalintelpulse.theaslangroupllc.com/api/clinical/trial-check

payable, partial

ClinicalTrials.gov lookup, deterministic. Answers "what is the status of NCT02142738", "recruiting phase-3 melanoma trials", "Pfizer trial pipeline". Single trial by NCT id (status, phase, sponsor, enrollment, dates, countries) or search by condition/sponsor with phase and status filters. Typed records straight off the official v2 API — no LLM, no key, public domain.

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse. It advertises 13 ways to pay and only 12 of them are usable.
Price
$0.02
Network
base
Pay to
0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
1036 ms
Payment options
12 usable of 13
Last checked
2026-08-10T09:14:39.640Z (1d ago)
Category
search

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fclinicalintelpulse.theaslangroupllc.com%2Fapi%2Fclinical%2Ftrial-check"