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Clinical Trial Search
x402
Clinical Trial Search is a paid API for AI agents from clinical-trials.use.x402atlas.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-29).
Search ClinicalTrials.gov studies by free text, condition, intervention, sponsor, status, and phase, returning structured study metadata.
Price / call$0.01
Success—
StatusUnknown
How this service works
Clinical trial search — find ClinicalTrials.gov studies by free text, condition, intervention, sponsor, recruitment status and phase, and get each study's NCT id, titles, status, phases, conditions, interventions, sponsor, start and completion dates, enrollment and whether results are posted. Use for drug development, medical research and patient-recruitment questions.
Output
Returns a paginated list of matching ClinicalTrials.gov studies, each with NCT ID, official and brief titles, recruitment status, phases, conditions, interventions, lead sponsor, start and primary completion dates, enrollment count, and whether results have been posted. Also includes applied filter echoes, total match count, retrieval timestamp, and a next_page_token for pagination.
Example use cases
Patient recruitment for rare disease
“Find all currently recruiting clinical trials for Duchenne muscular dystrophy — I need the trial names, NCT IDs, phases, and enrollment numbers to help identify options for a patient.”
Pharma competitive intelligence
“Search for Phase 2 and Phase 3 trials testing checkpoint inhibitors for non-small cell lung cancer sponsored by Merck, and show me their status and completion dates.”
Drug development landscape research
“What completed clinical trials with posted results exist for CRISPR gene therapy interventions? Give me up to 50 studies so I can map the development landscape.”
Technical details
Endpoint
GEThttps://clinical-trials.use.x402atlas.com/search?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to search or discover clinical trials from ClinicalTrials.gov by flexible free-text or structured filters (condition, drug, sponsor, phase, status). Prefer it over the sibling 'Clinical Trial Updates' endpoint when you want broad discovery rather than a feed of recently changed studies. It is ideal for drug development research, patient recruitment use cases, competitive intelligence, and literature review tasks that require structured trial metadata.
Side effects
- Empty result set when query terms are too specific or misspelled — returns count:0 with no studies
- Invalid status value in comma-separated list returns a 400-level error
- Phase enum value not matching allowed options (early1, 1, 2, 3, 4, na) causes request rejection
- Exceeding limit maximum of 50 or providing a malformed page_token causes schema validation failure
- ClinicalTrials.gov upstream unavailability may cause timeouts or empty responses
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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