This is pointless to integrate. Payment systems are complicated and should be designed independently outside of the browser. This API looks very similar to a si

This is pointless to integrate. Payment systems are complicated and should be designed independently outside of the browser. This API looks very similar to a simple AJAX call anyway. It's pointless to create this API, and it can be confusing because now, as a developer, I have to read about the API, learn how to use it properly, find work-arounds for all the caveats, and find myself frustrated at how stupid the API is for existing.