Apply preset to multiple photos with a single API call

In the API demo for applying presets, https://developer.adobe.com/photoshop/api/demo/,  the article states that an API user can "Get the benefit of filters that you can customize without limits and apply them on thousands of images with one API call".

However, when I go to the API documentation and in my own testing, it seems like it is only possible to apply a preset to a single image at a time. https://developer.adobe.com/photoshop/photoshop-api-docs/api/#tag/Lightroom/operation/presets

This will unfortunately be prohibitevely expensive for my use case at $0.15/call, so what I'm wondering is if there is any way to apply a preset to multiple images using a single API call like it seems to say in the demo?