spec.yaml

openapi: 3.0.1
x-kusk:
  namespace: booksapp
  service:
    name: webapp
    namespace: booksapp
    port: 7000
  cors:
    origins:
      - http://foo.example
      - http://bar.example
    methods:
      - POST
      - GET
      - OPTIONS
    headers:
      - Content-Type
    credentials: true
    expose_headers:
      - X-Custom-Header
    max_age: 86400
paths:
  /:
    get: {}