wiki-js/blocks/block-index/tree.graphql

query blockIndexFetchPages (
  $siteId: UUID!
  $locale: String
  $parentPath: String
  $tags: [String]
  $limit: Int
  $orderBy: TreeOrderBy
  $orderByDirection: OrderByDirection
  $depth: Int
  ) {
  tree(
    siteId: $siteId
    locale: $locale
    parentPath: $parentPath
    tags: $tags
    limit: $limit
    types: [page]
    orderBy: $orderBy
    orderByDirection: $orderByDirection
    depth: $depth
    ) {
    id
    folderPath
    fileName
    title
    ...on TreeItemPage {
      description
    }
  }
}