National Institutes of Health (NIH) Version API

openapi: 3.0.3
info:
  title: ClinicalTrials.gov REST BioSample Version API
  description: This API is made available to provide users meta data, statistics, and the most recent version of the clinical trials available on ClinicalTrials.gov.
  version: 2.0.5
servers:
- url: https://clinicaltrials.gov/api/v2
  description: This server
tags:
- name: Version
  description: Version info
paths:
  /version:
    get:
      summary: Version
      description: 'API and data versions.


        API version follows [Semantic Versioning 2.0.0 Schema](https://semver.org/spec/v2.0.0.html).

        Data version is UTC timestamp in `yyyy-MM-dd''T''HH:mm:ss` format.'
      tags:
      - Version
      operationId: version
      parameters: []
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Version'
        '400':
          description: Bad Request
          content:
            text/plain:
              schema:
                $ref: '#/components/schemas/errorMessage'
components:
  schemas:
    errorMessage:
      type: string
      description: A text message describing an error
    Version:
      type: object
      properties:
        apiVersion:
          type: string
        dataTimestamp:
          type: string
      additionalProperties: false
      required:
      - apiVersion
externalDocs:
  description: Introduction on clinicaltrials.gov
  url: https://clinicaltrials.gov/data-about-studies/learn-about-api