ClinicalTrials.gov API Search & Monitor

nctId	NCT07348432
briefTitle	The diabEAT Study: Insulin dElivery Technologies And eaTing…
overallStatus	RECRUITING

How it will work: 3 steps

Follow us on ApifyThe tool is built and waits in the queue for the Apify Store. Apify is the cloud platform where our tools run.
Paste your input and press StartNo code needed: you fill in a form (the input). It already has a working example. For example: [] in Study countries. Each start is one run.
Download the resultsWhen the run ends, the results are in a table (the dataset). Open Output, press Export and pick Excel or CSV. JSON and the API are there too.

This tool is an Apify Actor: a small program that runs on Apify. You can also run it on a schedule, for example every Monday. New to it? Read how it works, step by step and the 8 words you need first.

Made by Cliqto Media, an independent digital media company. We made this tool. About us

What it does

Search ClinicalTrials.gov by disease, treatment, sponsor, country, recruitment status or phase. Get study records and compare them with your own earlier snapshot. No API key is needed.

Who uses it

Pharma business teams

Watch studies by drug, sponsor or phase.

CRO planners

Find recruiting studies by country.

Registry analysts

Export study data for research.

Price

Prices will be shown after release.

Questions

Can it match patients to trials?

No. It returns public study data only. It gives no medical advice.

Does it give contact details?

No. Personal contacts are not returned.

How many studies can one run check?

Up to 500 studies per run.

Do I need an API key?

No. The ClinicalTrials.gov API is public.

Details

Step by step on Apify

Open Input. The new form has condition: "diabetes", overallStatus: ["RECRUITING"], maxResults: 25 and onlyNew: false.
Click Start.
Open Output → Studies. Check nctId, briefTitle and overallStatus.
Export JSON, CSV or Excel from the Dataset.
For a later comparison, open Next snapshot and save the whole JSON object.

Use cases

Task	Filters	Key fields
Review a disease research pipeline	`condition`, `phase`	NCT ID, phases, sponsor, enrollment
Review an organization portfolio	`sponsor`	Titles, countries, dates
Watch recruitment updates	`previousSnapshot`, `onlyNew`	Change type, status, content fingerprint
Export a regional registry list	`countries`, `overallStatus`	Countries, status, source links

Tips for better results

Start with a small max number, like 25, then grow it.
Keep the same filters when you use a saved snapshot.
Look at the date type. Estimated dates are plans, not facts.

Limits and good to know

The proven maximum is 500 distinct studies per run. Work at the source stops after 90 seconds. Requests have a 15-second limit, including the body. The Actor retries temporary errors at most three attempts, with at most two timeouts. It reads at most 10 study pages and accepts at most 6 MB of response data. A large or slow response can produce partial output.

Troubleshooting

Problem	Action
No rows	Check spelling and combined filters. Read summary: `not_found` is a valid result.
No changes	This can be normal. Check scanned count and the same search fingerprint.
`SNAPSHOT_QUERY_MISMATCH`	Restore the filters and `maxResults` from the baseline run.
`INVALID_previousSnapshot`	Copy the full successful SNAPSHOT, not Dataset rows.
`SOURCE_QUERY_REJECTED`	Check the text search syntax, for example an unclosed bracket or quote.
Unknown country name	Use registry country names such as `United States`, `Korea, Republic of` or `Turkey (Türkiye)`.
`SOURCE_RATE_LIMIT` or `SOURCE_UNAVAILABLE`	Retry later. Do not run many copies at once.
Deadline or byte limit	Use a smaller or narrower search. Partial data remains visible.

For developers

Sample result

One result from a real test run, in JSON. Real values change from run to run. In Excel or CSV each field is a column.

one result · JSON

{
  "nctId":"NCT07348432",
  "briefTitle":"The diabEAT Study: Insulin dElivery Technologies And eaTing Behaviours in People With Type 1 Diabetes",
  "overallStatus":"RECRUITING",
  "phases":[],
  "studyType":"OBSERVATIONAL",
  "leadSponsor":"McGill University",
  "enrollment":106,
  "enrollmentType":"ESTIMATED",
  "startDate":{"date":"2024-07-29","type":"ACTUAL"},
  "primaryCompletionDate":{"date":"2026-10-31","type":"ESTIMATED"},
  "completionDate":{"date":"2027-04-30","type":"ESTIMATED"},
  "locationsCount":1,
  "countries":["Canada"],
  "lastUpdatePostDate":"2026-10-09",
  "url":"https://clinicaltrials.gov/study/NCT07348432",
  "changeType":"SNAPSHOT"
}

Data fields (30)

Field	Type	Meaning
`nctId`	string	ClinicalTrials.gov registry ID, for example NCT07348432.
`briefTitle`	string	Short public title of the study.
`officialTitle`	string	Full official study title. Null when the registry has none.
`overallStatus`	string	Overall recruitment status, for example RECRUITING or COMPLETED.
`phases`	array	Study phases from the registry, for example PHASE2 and PHASE3. Empty when no phase is reported; NA means not applicable.
`studyType`	string	INTERVENTIONAL, OBSERVATIONAL or EXPANDED_ACCESS. Null when not reported.
`conditions`	array	Diseases or conditions reported for the study.
`interventions`	array	Treatments as {name, type}, for example a drug or device. No contact data.
`leadSponsor`	string	Organization that leads the study. Null when not reported.
`leadSponsorClass`	string	Registry organization class, for example INDUSTRY, NIH or OTHER.
`collaborators`	array	Partner organizations as {name, class}.
`enrollment`	number	Number of participants reported by the sponsor. Null means not reported, not zero.
`enrollmentType`	string	ACTUAL for a reported count, ESTIMATED for a planned count.
`startDate`	object	Study start as {date, type}. Type is ACTUAL or ESTIMATED; the date can be year-month only.
`primaryCompletionDate`	object	Date of the last main outcome measurement as {date, type}.
`completionDate`	object	Study completion as {date, type}.
`locationsCount`	integer	Number of study site entries. Null when the registry did not return sites.
`countries`	array	Unique countries of study sites.
`lastUpdatePostDate`	string	Date the latest study update was posted, YYYY-MM-DD.
`url`	string	Public ClinicalTrials.gov page of the study.
`provider`	string	Always ClinicalTrials.gov.
`sourceUrl`	string	Official API URL of this study record.
`fetchedAt`	string	Time this run read the record, ISO UTC.
`sourceUpdatedAt`	string	Same value as the last update posted date.
`providerDataTimestamp`	string	Registry data processing time from the API version endpoint.
`license`	string	Reuse terms notice for the registry data.
`licenseUrl`	string	Link to the ClinicalTrials.gov terms and conditions.
`changeType`	string	SNAPSHOT without a baseline; NEW, UNCHANGED, STATUS_CHANGED or UPDATED against your previous snapshot.
`changedFields`	array	overallStatus for a status change, record for any other content change.
`contentHash`	string	SHA-256 of the normalized study content, used for comparison. Fetch time is not included.

Input settings (10)

The main fields of the input form. With the API you send them as JSON.

Setting	Name in the API	Type	Example value
Condition or disease	`condition`	string	`"diabetes"`
Intervention or drug	`intervention`	string	`""`
Sponsor or collaborator	`sponsor`	string	`""`
Updated since	`updatedSince`	string	`""`
Study countries	`countries`	array	`[]`
Recruitment statuses	`overallStatus`	array	`["RECRUITING"]`
Study phases	`phase`	array	`[]`
Maximum studies to scan	`maxResults`	integer	`25`
Previous snapshot	`previousSnapshot`	object
Return changes only	`onlyNew`	boolean	`false`

ClinicalTrials.gov Studies Search and Monitor

How it will work: 3 steps