gatsby-8.x-1.x-dev/config/schema/gatsby.schema.yml

gatsby.settings:
  type: config_object
  label: 'Gatsby settings'
  mapping:
    server_url:
      type: uri
      label: 'Server URL'
    preview_callback_url:
      type: uri
      label: 'Preview callback URL'
    path_mapping:
      type: string
      label: 'Path Mapping'
    incrementalbuild_url:
      type: uri
      label: 'Incrmental build URL'
    contentsync_url:
      type: uri
      label: 'Content Sync URL'
    build_published:
      type: boolean
      label: 'Build published'
    log_json:
      type: boolean
      label: 'Log JSON'
    custom_source_plugin:
      type: string
      label: 'Custom Source Plugin'
    supported_entity_types:
      type: sequence
      label: 'Supported entity types'
      sequence:
        type: string
    publish_private_files:
      type: boolean
      label: 'Publish Private Files'
    delete_log_entities:
      type: boolean
      label: 'Delete Old Gatsby Fastbuilds Log Entities'
    log_expiration:
      type: string
      label: 'Fastbuilds Log Expiration'
    prevent_selfreferenced_entities:
      type: boolean
      label: 'Do not store data for entity types that are self referenced'
    number_items_delete:
      type: integer
      label: 'Number of Log Entities to Delete'

node.type.*.third_party.gatsby:
  type: mapping
  label: 'Gatsby node-type settings'
  mapping:
    preview:
      type: boolean
      label: 'Enable preview'