How to get the password of admin in service's scripts

[Zhang Ruiqiang]

Hi all:
      In service's scripts, I want to do something through the Rest API. The 
username and password are the necessary parameters to call the API, at present, 
I set the fixed value for the parameters, but if the password changed, the call 
of API will be failure.
       So, is there a soultion for this situation?
       By the way, as I know,  the agent communicates with server through Rest 
API too, does agent need the password too?


Thanks！