ClinicalTrials.gov Scraper

Scrape clinical-trial registry records from the official ClinicalTrials.gov v2 REST API (https://clinicaltrials.gov/api/v2/studies) — the U.S. NIH registry of clinical studies. No API key, no login. One clean dataset record per study, with a flat set of normalized columns plus the complete raw study object so nothing is lost.

Typical job: list every study matching a disease, drug, sponsor or status (for example, all recruiting type 2 diabetes trials testing semaglutide) and export them as a table: NCT id, title, status, phase, sponsor, enrollment, dates, countries and a link to each study.

Quick start (about 1 minute)

1. Open the Input tab. It opens pre-filled with this narrow job (the same input is the ready-to-run example):

{
  "condition": "type 2 diabetes",
  "intervention": "semaglutide",
  "status": ["RECRUITING"],
  "maxResults": 5,
  "pageSize": 5,
  "sort": "LastUpdatePostDate:desc"
}

2. Click Start. Leave any field empty to skip that filter; filters are combined with AND.
3. Open the Output tab and export as CSV, Excel or JSON. Raise maxResults once the rows look right.

What the output looks like

Rows from a local test run of the input above on 2026-09-24 (ClinicalTrials.gov reported 50 matches; the run was capped at 5). Live results change as the registry updates.

nctId	briefTitle (shortened)	status	phase	leadSponsor	enrollment	countries
NCT05569772	Semaglutide for glucose intolerance after gestational diabetes	RECRUITING	PHASE3	Universitaire Ziekenhuizen KU Leuven	252	Belgium
NCT07653477	Phase III study of UBT251 injection in type 2 diabetes (UNIGUIDE-2)	RECRUITING	PHASE3	The United Bio-Technology (Hengqin) Co., Ltd.	956	China
NCT06897475	LY3457263 vs placebo on a stable dose of semaglutide or tirzepatide	RECRUITING	PHASE2	Eli Lilly and Company	200	Canada, Germany, Poland, Puerto Rico, United Kingdom, United States

Each row also has officialTitle, conditions, interventions, startDate, completionDate, lastUpdatePostDate, locations, hasResults, studyUrl (for example https://clinicaltrials.gov/study/NCT05569772) and the full raw study object.

Cost of the quick start: 5 studies x $0.0005 = $0.0025 on the free tier (lower per-study price on paid plans), plus small platform usage. 1,000 studies cost about $0.50 at the free-tier rate.

Limits: data is whatever ClinicalTrials.gov publishes (registry records, not patient data or full result tables). A filter that matches nothing returns 0 rows and no per-study charge.

What it does

Query the registry by any combination of filters (the API ANDs them together):

Input	API field	Example
query	free-text over the whole record	GLP-1, long COVID
condition	condition / disease	type 2 diabetes
intervention	intervention / drug / device	semaglutide
sponsor	lead sponsor / collaborator	Pfizer
titles	words in the study title	migraine prevention
nctId	a specific study id	NCT03470961
status	recruitment status (multi-select)	RECRUITING, COMPLETED
phase	trial phase	PHASE3
studyType	interventional / observational	INTERVENTIONAL
sort	result ordering	LastUpdatePostDate:desc

maxResults caps how many studies you get; the actor paginates automatically (opaque nextPageToken, up to 1000 studies per request) until it reaches the cap or the result set is exhausted.

Output

One dataset record per study. Normalized convenience columns:

nctId, briefTitle, officialTitle, acronym, overallStatus, studyType, phases, phase, conditions, interventions, interventionTypes, leadSponsor, leadSponsorClass, collaborators, enrollment, startDate, primaryCompletionDate, completionDate, lastUpdatePostDate, locations (facility / city / state / country), locationCountries, hasResults, studyUrl

…plus raw — the complete, untouched study object from the API (protocolSection, derivedSection, …) so any field not surfaced above is still available.

Example input

{
  "condition": "diabetes",
  "intervention": "metformin",
  "status": ["RECRUITING"],
  "phase": "PHASE3",
  "maxResults": 200,
  "sort": "LastUpdatePostDate:desc"
}

A query that matches nothing returns 0 records and succeeds (never an error).

Pricing

Pay-per-event: charged per study returned.

Source

Data comes from the U.S. National Library of Medicine's ClinicalTrials.gov v2 API (https://clinicaltrials.gov/data-api/api). ClinicalTrials.gov data is in the public domain. This actor is an independent tool and is not affiliated with or endorsed by NIH / NLM.