type: object
title: SMS channel settings
properties:
  phone_number:
    type: string
    description: SMS phone number
    example: '+15551234567'
  provider_config:
    type: object
    description: Provider-specific SMS configuration
    example:
      api_key: your-api-key
      api_secret: your-api-secret
      application_id: your-application-id
      account_id: your-account-id
