openapi: 3.1.0
info:
  title: ClinicalTrials.gov API v2 Stats API
  description: 'A partial OpenAPI 3.1 representation of the ClinicalTrials.gov v2 REST/JSON

    API. ClinicalTrials.gov is the U.S. National Library of Medicine''s registry

    of clinical studies. The v2 API replaces the legacy AACT/full-study download

    path with a JSON-first interface. The API is open and does not require

    authentication for read access. The authoritative OpenAPI document is

    published at https://clinicaltrials.gov/api/v2/swagger.yaml.

    '
  version: 2.0.0
  contact:
    name: ClinicalTrials.gov
    url: https://clinicaltrials.gov/data-api/api
  license:
    name: Public Domain (U.S. Government Work)
servers:
- url: https://clinicaltrials.gov/api/v2
  description: Production
tags:
- name: Stats
paths:
  /stats/size:
    get:
      summary: Get registry size statistics
      description: Returns counts and size statistics for the studies in the registry.
      operationId: getSizeStats
      responses:
        '200':
          description: Size statistics.
          content:
            application/json:
              schema:
                type: object
      tags:
      - Stats