So when I submit a braintree order for settlement, there will/can be multiple state changes until I get my money. It can settle, stay in settling, get declined, and so on.
How can I get this information without having to call their API constantly? Is there some kind of webhook for that? Because in my tests, I only get updates for disbursements, which is (if I understood it correctly) basically the last step of the whole transaction.
There are webhooks for some events, but not for specifically when a transaction changes status.
You can, however, use the Search API to create a script or cron job that checks for status changes over a period of time.
If you have additional questions about webhooks or using the API, contact Support.