Warning. I haven't been able to find a way to deauthorise a token, so if someone takes your token they might have access to your Compass account forever.
- Log into compass on a web browser
- Open Developer tools on Compass (Ctrl+Shift+I on Firefox)
- Open the Network tab, and click "Reload". You should see a list of requests.
- Find the request for "GetCalendarEventsByUser", and click on it.
- In the "Cookies" tab of the request, you should see a "ASP.NET_SessionId" field. This is your Compass login token.