Accessing the API — Indico 3.2.2 documentation on how to use the tokens. Then simply use your browser’s devtools to look at the request sent when performing the action manually to see what’s sent and what the response it.
Note: We make zero guarantees on stability of these internal things. Being internal APIs (not even actual APIs) they can stop working at any time without prior announcement (on CERN Indico) - so when using them it’s highly recommended to set up some alerts when such an endpoint suddenly response with a 4xx error (e.g. 400, 404 or 422). For example, we may move the event creation dialog to React at some point - when we do that, the endpoint expecting form data will be replaced with an API that expects JSON. So it will break your integration but at the same time after fixing it you’ll have a much nicer one 