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ClinicalTrials.gov Study Resolver
x402
ClinicalTrials.gov Study Resolver is a paid API for AI agents from payai.agentstools.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).
Resolves a single clinical trial by NCT ID and returns a normalized profile including identity, recruitment status, phase, design, enrollment, sponsors, conditions, interventions, outcomes, sites, and key dates.
Price / call$0.02
Success—
StatusUnknown
How this service works
Resolve one clinical trial by its NCT id and get a normalized cited profile: identity, recruitment status, phase, study design, target enrollment, lead sponsor and collaborators, conditions, interventions, primary outcomes, trial sites and key dates, plus computed signals from ClinicalTrials.gov.
Output
A normalized clinical trial profile including: trial identity (title, NCT ID), current recruitment status, study phase, study design parameters, target enrollment count, lead sponsor name and collaborators, conditions studied, interventions being tested, primary outcome measures, geographic trial sites, key dates (start, primary completion, estimated completion), and computed signals derived from ClinicalTrials.gov data.
Example use cases
Check trial recruitment status
“Is clinical trial NCT04280705 still actively recruiting patients? I need the current status, phase, and target enrollment numbers.”
Research trial design for due diligence
“I'm evaluating a biotech investment — can you pull the study design, lead sponsor, collaborators, and primary outcomes for NCT03228186?”
Summarize trial sites and key dates
“What are the trial sites and important dates like start date and estimated completion for NCT02142049?”
Technical details
Endpoint
GEThttps://payai.agentstools.dev/trials/studyWhen to prefer
Use this endpoint when you need structured, normalized data for a specific clinical trial identified by its NCT ID, rather than searching across trials. Prefer this over manual ClinicalTrials.gov browsing when you need machine-readable fields like phase, status, sponsors, and outcomes in a consistent format. Ideal for due diligence workflows, research pipelines, or agent tasks that need to compare or summarize individual trial profiles.
Side effects
- Invalid or malformed NCT ID returns an error or empty result
- Trial not found on ClinicalTrials.gov returns 404 or null profile
- ClinicalTrials.gov upstream outage causes timeout or error
- Missing required 'nct' or 'id' query parameter results in a validation error
- Very recently registered trials may have incomplete data fields
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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