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2s.io Clinical Trial Search
x402
2s.io Clinical Trial Search is a paid API for AI agents from 2s.io, paid per call via x402, $0.0012/call, status unknown (last checked 2026-09-14).
Search ClinicalTrials.gov for registered clinical studies by free-text query, NCT ID, or filters like phase, status, sponsor, and country
Price / call$0.0012
Success—
StatusUnknown
How this service works
Search ClinicalTrials.gov — every registered US (and many international) clinical study (~500k trials). Free-text query matches title + condition + intervention; or direct lookup by NCT ID. Optional filters: recruitment status, lead sponsor, phase (PHASE1..PHASE4), country. Each record includes NCT ID, brief + official title, status, phases, study type, conditions list, interventions (with type + name), enrollment count + type, key dates (start / primary completion / completion / first posted / last update), lead sponsor + class (INDUSTRY/NIH/OTHER), hasResults flag, brief summary, and canonical clinicaltrials.gov URL. Public-domain NIH NLM data.
Output
A list of clinical trial records (up to 100 per page), each containing: NCT ID, brief and official title, recruitment status, phases, study type, conditions, interventions (type + name), enrollment count and type, key dates (start, primary completion, completion, first posted, last update), lead sponsor name and class (INDUSTRY/NIH/OTHER), hasResults flag, brief summary, and a canonical clinicaltrials.gov URL. Includes a pagination token for fetching subsequent pages.
Example use cases
Example prompt
“Search ClinicalTrials.gov for recruiting Phase 3 trials studying pembrolizumab for non-small cell lung cancer in the United States — show me the top 10 results with their NCT IDs, status, interventions, and brief summaries.”
Technical details
Endpoint
GEThttps://2s.io/api/clinical/trial-searchWhen to prefer
Use this endpoint when you need structured, filterable access to ClinicalTrials.gov data — especially when you need to filter by phase, recruitment status, sponsor, or country in addition to keyword search. Prefer this over scraping clinicaltrials.gov directly because it returns normalized, machine-readable records with all key fields pre-extracted. Ideal for agents that need to match patients to trials, analyze drug pipelines, or summarize trial landscapes for a condition.
Side effects
- Invalid NCT ID format returns an error or empty result
- Unknown phase enum value rejected by schema validation
- Free-text query with no matches returns empty results list
- Invalid status enum value causes a 400-level error
- Pagination token from a different query session may return unexpected results
- Country name misspelling or non-standard form may return no results
Input
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"query": "diabetes",
"status": "RECRUITING",
"pageSize": 10
}
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
{
"_truncated": true,
"_originalSize": 15950
}Tags
x402
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