Short answer: You can list ga4 properties in Google Analytics 4 by hand from its own interface, but it won’t repeat itself. On TinyCommand, add the Google Analytics 4 List GA4 Properties action to a workflow, map its 0 inputs from any upstream app, and it runs automatically every time the trigger fires. No code, and a free tier to start.
{}
{"accountSummaries": [{"name": "accountSummaries/123","account": "accounts/123","displayName": "Acme","propertySummaries": [{"property": "properties/456","displayName": "Acme Web"}]}]}
Use these fields in downstream nodes for routing, logging, or error handling.
Any of these apps can fire this action as part of a workflow.