Set PowerShellAI OpenAI API Credentials Securely on Windows. Associated blogpost https://blog.darrenjrobinson.com/generative-ai-chatgpt-with-powershell/

Set PowerShellAI OpenAI API Credential.ps1

# 1. Get API Credential via prompt. 
#  Only need the password which is your API Key
$gptAPI = Get-Credential

# 2. Export to a file in the local directory
$gptAPI | Export-Clixml ./chatGPTAPIKey.xml 

# 3. Ongoing you only need to put the following two lines at the top of your scripts
#    Make sure you copy your chatGPTAPIKey.xml file to other directories for scripts for OpenAI. 
$chatGPTCred = Import-Clixml .\chatGPTAPIKey.xml
$chatGPTAPIKey = [System.Runtime.InteropServices.marshal]::PtrToStringAuto([System.Runtime.InteropServices.marshal]::SecureStringToBSTR($chatGPTCred.Password))