Open api specification sample

openapi: 3.0.0
info:
  title: Testing OAS
  version: 1.0.0
  description: >
    I am learning open API Specification. This is industry standard specification technique for any web service. 
  termsOfService: https://example.com/terms
  conatct: 
    name: Bipon Biswas
    url: https://bipon.notes.com
    email: support@example.com
  license:
    name: Aache 2.0
    url: https://apache.com
servers:
  - url: https://api.example.com/v1
    description: prod server
  - url: http://localhost:4000/v1
    description: dev server
paths: 
  /health:
    get: 
      tags:
        - Health
      description: this endpoint test the health of the api
      responses: 
        '200': 
          description: It will return a success message
          content: 
            application/json:
              schema: 
                type: object
                properties: 
                  message: 
                    type: string
                    example: ok