Hey Brian,
Thank you for your question.
As @PhoneBoy mentioned, there's currently no API that corresponds with the SmartConsole view you mentioned.
Indeed, the current way to achieve that would be iterating on the policy packages access layers' and check on which packages the changed layer is in use.
If you need help with implementing such logic, feel free to consult with us here.
Regardless, we'll look into the possibility of adding such field to the "access-layer" reply in future versions.
Best Regards,
Nir