Below is the full configuration available with defaults values:

"example" => [
    "type"   => "anomaly.field_type.upload",
    "config" => [
        "folder" => null,
        "image"  => false,
        "mimes"  => [],
        "max"    => null,
Key Example Description
folder `"images"` The slug or ID of the upload folders.
image true Whether to only allow image uploads or not.
mimes `["jpg", "jpeg", "png"]` The allowed file types to upload.
max 2 The max upload size in megabytes. Defaults to folder max which may default to system max if not specified.