How to convert a layer to a mask (with scripting)

[vivekr10411223]

I'm looking for is a script that will automate the process Auto Trace within my work area?(Alpha png to Masks) Without UI

step 1 To step 4

https://ibb.co/mqj3x0

[brian704]

Depending on what you want to do there would be 2 built-in ways. If you want to effect a layer or pre-comp there is a filter (I think called "Set Matte under Channels"

There is also a switch labeled with a "T" next to Track matte that will allow you to use the alpha to effect layers above