clinical

Search ClinicalTrials.gov - every registered US (and many...

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.

get/api/clinical/trial-search

Request

  • Base URL: https://2s.io
  • URL: https://2s.io/api/clinical/trial-search
  • Auth: API key in header PAYMENT-SIGNATURE

Query parameters

querystring

Free-text search query.

nctIdstring

Nct ID.

status'RECRUITING' | 'ACTIVE_NOT_RECRUITING' | 'COMPLETED' | 'TERMINATED' | 'WITHDRAWN' | 'NOT_YET_RECRUITING' | 'SUSPENDED'

Filter results by status.

sponsorstring

Sponsor.

phasestring

Phase.

countrystring

Country name or ISO country code.

pageSizeinteger

Number of results to return per page.

pageTokenstring

Page token.

trial1

Try before you buy. Set to 1 for one free real call per endpoint per hour — no wallet or payment needed — to verify the endpoint before paying. Equivalent to sending the "X-2s-Trial: 1" request header. Listed only on operations that offer a trial; the others always answer 402.

Response

(unresolved $ref)

Changes

No recorded changes to this operation across all 1 revision of this API.