If you run phi auth and you get the error: CLI authentication failed or your CLI gets stuck on 
Waiting for a response from browser...
It means that your CLI was not able to authenticate with your Phidata account on phidata.app The quickest fix for this is to export your PHI_API_KEY environment variable. You can do this by running the following command: 
export PHI_API_KEY=<your_api_key>
Your API key can be found on phidata.app in the sidebar under API Key. phi-api-key Reason for CLI authentication failure:
  • Some browsers like Safari and Brave block connection to the localhost domain. Browsers like Chrome work great with phi auth.