openapi: 3.1.0
info:
  title: Sample API
  description: Optional multiline or single-line description in [CommonMark](http://commonmark.org/help/) or HTML.
  version: 0.1.9

servers:
  - url: http://api.example.com/v1
    description: Optional server description, e.g. Main (production) server
  - url: http://staging-api.example.com
    description: Optional server description, e.g. Internal staging server for testing

paths:
  /users/{userId}:
    get:
      summary: Get a user by ID
      responses:
        200:
          description: A single user.
          content:
            application/json:
              schema:
                $ref: "./schemas/user.yaml"