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Clinical Trial Failure Intelligence
x402
Clinical Trial Failure Intelligence is a paid API for AI agents from x402-filings.datalayer.workers.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).
Fetches stopped clinical trials from ClinicalTrials.gov and classifies the stop reason—distinguishing true safety/efficacy failures from business, recruitment, and funding halts
Price / call$0.02
Success—
StatusUnknown
How this service works
Stopped clinical trials with the stop reason classified. ClinicalTrials.gov records why a trial halted as free text; this reads that text and separates safety and efficacy failures from business, recruitment and funding stops, which are the ones people routinely misread as drug failures. Filter by sponsor, condition, intervention and phase, and get the cohort-level breakdown alongside the records.
Output
A list of stopped clinical trial records from ClinicalTrials.gov, each with the free-text stop reason parsed and classified into categories: safety/efficacy failure versus business, recruitment, or funding halt. Also includes a cohort-level summary breakdown of stop reason categories across the returned records, along with trial metadata such as sponsor, condition, intervention, and phase.
Example use cases
Separating drug failures from enrollment stops
“I'm researching pembrolizumab's development history—can you pull all terminated or suspended trials for that drug and break down which ones stopped for safety or efficacy reasons versus which ones just ran out of funding or couldn't recruit patients?”
Pharma competitor trial analysis
“Get me up to 100 stopped Phase 2 and Phase 3 trials sponsored by AstraZeneca and classify why each one halted—I need to know how many were real drug failures versus business or operational decisions.”
Condition-specific trial risk screening
“Find stopped clinical trials for non-small cell lung cancer, any phase, and give me the breakdown of how many halted for safety signals versus how many were withdrawn for non-scientific reasons like funding or enrollment.”
Technical details
Endpoint
GEThttps://x402-filings.datalayer.workers.dev/v1/health/clinical-trialsWhen to prefer
Choose this endpoint when you need to interpret why a clinical trial stopped—not just that it stopped—especially to avoid conflating business or logistical halts with scientific failures. It is the right choice for due diligence on drug pipelines, competitive intelligence on trial outcomes, or any research workflow where misreading a terminated trial as an efficacy failure would lead to wrong conclusions. Prefer it over raw ClinicalTrials.gov queries when stop-reason classification is required.
Side effects
- No trials found matching the filter combination—returns empty results or zero-count cohort
- Invalid phase value (not PHASE1/PHASE2/PHASE3/PHASE4) causes parameter rejection
- Limit out of range (below 1 or above 100) causes validation error
- ClinicalTrials.gov upstream unavailability may cause delayed or failed responses
- Free-text stop reasons that are ambiguous or missing may result in unclassified records
- Payment failure or x402 protocol error prevents the call from completing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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