How to get all topics list of Firebase through API?

Question

I want to retrieve all the topics created so far via API request, similar to the list that firebase console display. See the image attached.

Answer 1

I just copy Answer from same question here becuase this page is first result in google: Get all subscribed topics from firebase cloud messaging

you can do it through a GET request

HTTP GET Request

https://iid.googleapis.com/iid/info/<TOKEN>?details=true
Content-Type:application/json
Authorization:key=AIzaSyZ-1u...0GBYzPu7Udno5aA

TOKEN in url : FirebaseInstanceId.getInstance().getToken();

key : can be found in [firebase console][1]: Your project -> settings -> Project settings -> Cloud messaging -> Server Key