• Disable the agent, wait for the agent to complete the current job
• Cleanup
• Enable the agent

Go to bamboo admin screen => Rest API browser and type agent, uncheck show only public API's

{
    "name": "Test Token",
    "read": true,
    "change": false
}

Store the tokens at the specific location on the bamboo agent. For example : /opt/data/bamboo-agents/token.uuid and update the script with the same

Thanks to Edward A. Webb for the plugin

• https://marketplace.atlassian.com/plugins/com.edwardawebb.bamboo-agent-apis
• https://eddiewebb.atlassian.net/wiki/display/AAFB/Access+Token+Operations
• https://bitbucket.org/eddiewebb/bamboo-agent-apis