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ClinicalTrials.gov API v2

US NLM

Up· checked 14 Nov 2026, 01:55 UTCNo keyHealth

All registered clinical studies with modern REST API.

Homepage API documentation

Details

Access
No keyOpen access: no account or key needed.
Coverage
global
Updates
daily
Formats
JSONCSV
License
Public domain (US gov)
API base
https://clinicaltrials.gov/api/v2
Tags
trials, studies, medicine
Added
14 Nov 2026

Status checks

Up Last check 14 Nov 2026, 01:55 UTC, HTTP 200, 187 ms.

30-day uptime 100% (1 of 1 checks passed).

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  1. 14 Nov 2026, 01:55 UTC: up, HTTP 200, 187 ms

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ClinicalTrials.gov API v2: public data source · Open Data Finder