Overview
We do encourage the repeated use of API Tokens to reach the FogBugz API, but if you need to log out, you can do so with the next command.
Step-By-Step Guide
To log off, send cmd=logoff. For example:
http://www.example.com/api.asp?cmd=logoff&token=24dsg34lok43un23
For more information, refer to the complete XML API documentation for FogBugz.