openapi: 3.0.0
info:
  title: A parameter with an array of ints
  version: 1.0.0
paths:
  /customers:      # https://api.example.org/customers?ids=34,45,67
    parameters:
    - name: ids
      in: query
      style: form
      schema:
        type: array
        items:
          type: integer