Hi

I’m not sure I understood correctly but here’s what I would do:

I use Make (old Integromat) to create integrations, there you could set a trigger like ‘card moved to a phase’ and then and event like ‘make http request’.

I use ‘card moved to a phase’ instead of ‘field update’ as a trigger because Make will read all field updates in a card, which would spend a lot of operations for nothing.