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ClinicalTrials.gov

Search and download records for every clinical study registered with the US National Library of Medicine.

HealthAuth: NoneHTTPS: YesCORS: yesStatus: alive

Last verified: November 12, 2026

Reliability

100% uptime: the documentation responded in 3 of 3 checks over the last 30 days. Median response time: 130 ms.

How we check, and the most reliable APIs →

At a glance

// Fetch the docs page with cURL curl https://clinicaltrials.gov/data-api/api

History

  • November 12, 2026: last health check, responding
  • November 9, 2026: Added to the directory (government api, verified by api bouncer)

See every change to the directory →