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Clinical trial registry database search API
Passed 26 of 26 test cases with the skill, and 18 of 26 without it.
and 6 more in the full report
8 fixed18 passed either way0 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 8 test cases the skill fixed. Same model, same prompt, with and without the skill.
To retrieve a specific trial record given its identifier NCT01234567, should I call 'GET /api/v2/studies?nctId=NCT01234567' or pass it directly in the path?
| Checked | Without skill | With skill |
|---|---|---|
| Uses https://clinicaltrials.gov/api/v2/studies/NCT01234567 | Missed | Passed |
The instructions your model reads when the skill loads.
ClinicalTrials.gov is a registry and results database of publicly and privately supported clinical studies conducted around the world, maintained by the U.S. National Library of Medicine (NLM) at the National Institutes of Health (NIH). It contains registration records for over 500,000 clinical trials from more than 220 countries, making it the largest and most comprehensive clinical trial registry in the world.
The ClinicalTrials.gov API provides programmatic access to this vast repository of clinical trial data. Researchers can search for trials by condition, intervention, sponsor, location, phase, status, and many other criteria. The API returns detailed structured data including study design, eligibility criteria, outcome measures, enrollment information, study contacts, and results when available.
Clinical researchers, pharmaceutical companies, systematic reviewers, epidemiologists, public health officials, patient advocacy groups, and health policy analysts use the ClinicalTrials.gov API to monitor the clinical trial landscape, identify recruiting studies, conduct meta-analyses, analyze research trends, and ensure comprehensive evidence coverage in systematic reviews. The database is a critical resource for evidence-based medicine and regulatory compliance.
No authentication required. The ClinicalTrials.gov API is freely accessible without any API key, token, or registration. All endpoints are publicly available. Users are expected to comply with the NCBI usage policies and make requests at a reasonable rate.
Search the ClinicalTrials.gov database and retrieve full study records with comprehensive metadata about trial design, eligibility, interventions, and outcomes.
GET https://clinicaltrials.gov/api/v2/studies| Parameter | Type | Required | Description |
|---|---|---|---|
| query.term | string | No | Free-text search query across all fields |
| query.cond | string | No | Condition or disease filter |
| query.intr | string | No | Intervention or treatment filter |
| query.spons | string | No | Sponsor or collaborator filter |
| filter.overallStatus | string | No | Status filter: RECRUITING, COMPLETED, ACTIVE_NOT_RECRUITING |
| filter.phase | string | No | Phase filter: PHASE1, PHASE2, PHASE3, PHASE4 |
| filter.geo | string | No | Geographic filter (distance:lat,lng) |
| sort | string | No | Sort field and direction |
| pageSize | int | No | Results per page (default 10, max 1000) |
| pageToken | string | No | Token for next page of results |
| format | string | No | Response format: json (default) or csv |
test cases passed, vs 18 / 26 without
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