Reading the Photoshop UXP Docs it says …
here are a few ways to learn what Photoshop accepts as acceptable action descriptors.
- During development, you can use the Photoshop
Record Action json...menu item under
Plugins > Developmentto record the action you wish to capture. The output json can be used to construct and modify your action descriptor.
But I cannot find that option under my Development tab in Photoshop 2021 ?