openapi: 3.0.0
info:
  title: WAPP API
  version: 1.0.0

components:
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: x-api-key

security:
  - ApiKeyAuth: []

paths:
  /api/send:
    post:
      summary: Send a WhatsApp message
      security:
        - ApiKeyAuth: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                phoneNumber:
                  type: string
                message:
                  type: string
      responses:
        '200':
          description: OK