🧭 “When an HTTP request is received”
This trigger gives your flow a web address — called a callback URL — that other apps or flows can use to start it by sending data (POST request) to that address.
Think of it like giving your flow a doorbell: Anyone who knows the URL can press it and trigger your flow into action.
🛠️ What Is “List Callback URL” Then?
Good question!
Instead of manually copying the flow's callback URL from the designer and pasting it elsewhere, you can use the Power Automate Management action:
✅ List Callback URL
…and it will give you the URL programmatically.
Please refer to the full article using the The Secret Gateway-List Callback URL | LinkedIn
