openapi: 3.0.0
info:
  title: API Key Example
  version: '1.0'
paths:
  /secret:
    get:
      summary: Return secret string
      operationId: app.get_secret
      responses:
        '200':
          description: secret response
          content:
            '*/*':
              schema:
                type: string
      security:
        - api_key: []
components:
  securitySchemes:
    api_key:
      type: apiKey
      name: X-Auth
      in: header
      x-apikeyInfoFunc: app.apikey_auth