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