Hi @Anonymous ,
If you want to develop a flow that interacts with an application's UI, I think you can look into Power Automate Desktop (PAD) flows which is robotics process automation (RPA). You can read up on it here.
I will also add that Power Automate cloud flows also includes hundreds of connectors and whilst it is an API in a sense, it also allows you to connect to many external systems without the need to write code.
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