trials Every registered study, read the same way.
603,730 studies — design, arms, eligibility, outcomes — one document per NCT id, refreshed daily.
updated 2026-10 · search 2 credits · free sample: glp-1 obesity phase 3
What it answers
Who is trialling what
Condition, intervention, phase, status, sponsor and country are all filters.
Whether a patient fits
Eligibility comes back structured rather than as a wall of prose.
What was measured
Primary and secondary endpoints are fields, so trials can be compared.
Three calls
Straight from the gateway’s own self-description — these are the calls it suggests first.
Find trials
POST /v1/trials/search {"query": "GLP-1 用于肥胖的三期试验", "filters": {"phase": "PHASE3", "overall_status": "RECRUITING"}} Read one trial
GET /v1/trials/read/NCT02082496 List a field's values
GET /v1/trials/facets?field=phase Narrow it — phase · overall_status · study_type · intervention_type · condition_mesh · countries · start_year · has_results · sponsor_class
What it will not do
A registry holds what sponsors filed: results are often missing or late, and a registered study is not a published one.
- Filter by condition_mesh (controlled terms); `conditions` is free text as entered by the registrant.
- Eligibility highlights, biomarkers, prior therapy and ECOG are model-extracted from the eligibility text — verify against the record before acting.
- 97k studies carry overall_status=UNKNOWN: the registrant stopped updating, which does not mean the trial ended.
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