A correct ACCESS_TOKEN is essential in most of http api call to Mixin messenger server or Mixin Network server.
If bot want to read a messenger user's profile or assets balance, it has to request user to grant permission to bot. This chapter introduce details.
Developer need to provide a ACCESS_TOKEN to access bot's profile, assets, or transfer bot's asset. The token can calculated from security parameters.
Developers have to calculate the ACCESS_TOKEN based on user's secure parameter if developer want to access mixin network user's profile, name, asset's balance.