ClinicalTrials.gov
ClinicalTrials.gov is the registry of clinical studies maintained by the U.S. National Library of Medicine. Through ScholarMuse, an agent can search registered studies by condition, intervention, phase, recruitment status and country, and get back each study's NCT id, status, sponsor, enrollment, dates and primary outcomes with a link to the registry record. It is a research lookup, not medical advice.
ScholarMuse tools: search_clinical_trials. Each successful call uses credits.
Ask your agent
What your agent gets back
Every record carries id, source, title, url, license, attribution and retrievedAt. The fields below are the data that comes from ClinicalTrials.gov.
search_clinical_trials
- nctId
- NCT registry id
- status
- Overall status, e.g. RECRUITING
- phase
- Trial phase or phases
- studyType
- Interventional or observational
- conditions
- Conditions studied, up to 10
- interventions
- Intervention type and name, up to 10
- sponsor
- Lead sponsor name
- enrollment
- Enrollment count
- startDate
- Study start date
- primaryCompletionDate
- Primary completion date
- primaryOutcomes
- First 3 primary outcomes with time frame
- countries
- Countries with study sites, up to 15
What it covers
- Studies registered on ClinicalTrials.gov, in any country and any overall status.
- Filters for condition, intervention, phase 1 to 4, nine overall statuses and a country with a study site.
- Free-text query for anything else, such as a sponsor, an outcome or an NCT id.
- The summary reports the total number of matching studies, not only the ones returned.
Limits
- At most 25 studies per call (default 10), first page only. There is no way to page through a longer result list.
- Posted results are not returned. hasResults only says whether the registry record has them.
- No eligibility criteria, arm details, site addresses or contacts. Primary outcome text is cut at 240 characters.
- At least one of condition, intervention, query or country is required. Country names must be in English.
How ScholarMuse reaches ClinicalTrials.gov
The connector calls the ClinicalTrials.gov API v2 /studies endpoint with query.cond, query.intr, query.term and query.locn parameters plus status and phase filters. No API key is sent.
Responses are cached for up to 3 hours, so a status change at ClinicalTrials.gov can take that long to appear.
API key: the upstream API can be called without one, so you do not add one.
Licence and attribution
Licence: Public (ClinicalTrials.gov terms and conditions; no copyright restriction on registry data)
Study records from ClinicalTrials.gov, U.S. National Library of Medicine.
Records that come from ClinicalTrials.gov carry this licence and attribution. When you cite the data in a paper, follow ClinicalTrials.gov's own citation guidance.
