ClinicalTrials.gov Trial Registry Tracker – Clinical Trials API

A ClinicalTrials.gov API wrapper (API v2) and clinical-trial feed that pulls studies and normalizes each into a clean record: title, status, phase, study type, enrollment, conditions, interventions, lead sponsor, key dates and site countries. Use it to build a clinical-trial intelligence tool, a competitive-pipeline monitor, a patient-recruitment feed, or biotech/pharma research dashboards.

Who uses it

Pharma and biotech competitive-intelligence and portfolio teams, CROs, patient-recruitment companies, investors doing biotech diligence, and medical researchers.

Why this is worth charging for

Trial registrations reveal competitors' pipelines, enrollment status and site footprints in near-real time. The v2 API is powerful but deeply nested and token-paginated. This actor flattens studies into readable records and monitors new/updated trials for a condition, drug or sponsor on a schedule.

Output

Each dataset item is one normalized record:

{
  "nctId": "NCT01234567",
  "title": "A Study of DrugX in Condition Y",
  "overallStatus": "RECRUITING",
  "phases": [
    "PHASE2"
  ],
  "studyType": "INTERVENTIONAL",
  "enrollment": 240,
  "conditions": [
    "Condition Y"
  ],
  "interventions": [
    "DrugX",
    "Placebo"
  ],
  "leadSponsor": "Acme Bio",
  "sponsorClass": "INDUSTRY",
  "startDate": "2024-01-15",
  "lastUpdateDate": "2024-05-01",
  "locationCount": 3,
  "countries": [
    "United States",
    "Canada"
  ],
  "url": "https://clinicaltrials.gov/study/NCT01234567",
  "source": "ClinicalTrials.gov"
}

Input

Field	Description
condition	Disease/condition query, e.g. 'non-small cell lung cancer'.
intervention	Drug/intervention query, e.g. 'pembrolizumab'.
sponsor	Lead sponsor name query.
term	Additional free-text query across the study.
status	Filter by recruitment/overall status.
pageSize	Studies per page (max 1000).
maxPagesToScan	Pages per run.
onlyNewSinceLastRun	Recommended for schedules — skips records already returned by a previous run using persisted state, so you're only charged for genuinely new items.
maxItems	Stop after this many normalized records.

Pricing (Pay-Per-Event)

• query — $0.02, charged once per run for the API query/poll.
• study-record — $0.02 per normalized record pushed. This is the primary event.
• apify-actor-start (Apify-managed) — covers baseline compute per run.

A condition/drug monitor returns tens of studies per run for a few cents to a dollar. With onlyNewSinceLastRun a schedule only bills newly-registered or updated trials.

Source & reliability

Data comes from the official clinicaltrials.gov/api/v2 service using token pagination. No API key or proxies required. Run npm test for the offline self-test covering the normalizer, including edge cases and missing-field handling.

FAQ

Is there an API for ClinicalTrials.gov?

Yes — this actor wraps the v2 API and returns clean, flattened study records via the Apify API, webhook or export.

Can I monitor a competitor's pipeline?

Yes. Set sponsor (and/or condition) and schedule with onlyNewSinceLastRun to catch new and updated trials.

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