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ClinicalTrials.gov API v2 boundary

Official-source access, authentication, request-shaping, paging, freshness, legal, and interpretation boundaries for ClinicalTrials.gov API v2.

version 1.0.0freshness currentobserved 2026-08-27T09:30:00Z

resource.public-data.clinicaltrials-gov-api-v2
sha256:e61bde269ba2ab077d84d41cc735552572b9606bc7881fa4946e87bdc2842318

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Evidence-backed facts

  1. ClinicalTrials.gov publishes an OpenAPI-described REST API v2 for study search, individual study retrieval, metadata, and service-version discovery. informative
  2. Study search responses are paginated, and clients must retain the next-page token and requested fields rather than treating the first page as a complete result set. informative
  3. The service normally refreshes data on weekdays, and clients should inspect the version endpoint dataTimestamp before claiming a current snapshot. informative
  4. A registered study record is sponsor-submitted registry information, not medical advice, peer review, proof of efficacy, or evidence that every field is complete and current. informative