Clinical Trials Monitor

Track clinical trials via the official ClinicalTrials.gov API v2 — new studies, record updates, results postings and sponsor pipelines across ~500k registered trials. No login, no API key.

Built for monitoring: watch a drug, condition or sponsor and pull only what changed since your last run.

Modes

Mode	What it returns
Search studies	Trials by term, condition, sponsor, intervention, status and phase — full structured records
Monitor record updates	Studies whose records changed in a date window — status flips, enrollment updates, protocol amendments, new postings
New results posted	Studies with results first posted in a window — the trial-readout tracker investors and BD teams watch
Sponsor pipeline	A sponsor's entire trial portfolio with statuses, phases and timelines

Example inputs

Watch a drug class — schedule daily, get only changed records:

{ "mode": "updates", "query": "semaglutide", "updatedAfter": "2026-09-22" }

Trial readouts this quarter (investor tracking):

{ "mode": "results", "resultsAfter": "2026-07-01", "sponsor": "Pfizer" }

Recruiting Phase 3 trials in a disease:

{ "mode": "studies", "condition": "lung cancer", "status": "RECRUITING", "phase": "PHASE3" }

Competitor pipeline:

{ "mode": "sponsor", "sponsor": "Novartis", "status": "RECRUITING" }

Output fields

nctId, title, status, whyStopped, hasResults, phases, studyType, enrollment, sponsor, sponsorClass, collaborators, conditions, interventions, interventionTypes, primaryOutcomes, startDate, primaryCompletion, completionDate, firstPosted, resultsFirstPosted, lastUpdatePosted, briefSummary, eligibilitySex, eligibilityAge, healthyVolunteers, locations, locationCount, url

Who uses this

• Pharma/biotech competitive intelligence — track rivals' trial status, completions and readouts
• Investors — results postings and status changes are market-moving events
• Business development — find partner/acquisition targets via pipeline views
• CROs & site networks — recruiting trials by geography and phase
• Researchers & patient advocacy — trial availability and eligibility monitoring

Scheduling

Records update constantly — new registrations, status changes, enrollment updates, results. Set an Apify schedule with updatedAfter = yesterday (daily) or last week (weekly) to emit only what changed. Same for resultsAfter to catch every readout.

Honest notes

• Data is the official ClinicalTrials.gov record — authoritative for registered trials. Sponsors self-report, so enrollment/completion dates are estimates until finalized.
• updates mode tracks record changes, not just status changes — a row means "something in this record changed since the date" (could be a status flip, new site, amended outcome, or minor edit). lastUpdatePosted tells you when.
• results mode uses ResultsFirstPostDate — the moment a readout goes public. Follow-up results post under the same NCT ID without resetting this date.
• Results-mode yields are slower than search yields — few trials post results.

Pricing

Pay per result — $1.00 per 1,000 rows, scaling down to $0.40 per 1,000 at volume tiers. No per-run fee. Free Apify plan covers ~5,000 rows/month.