I dont really understand ops problem as I've been able to set monthly limits on expenditure. Seems trivial to setup.
replyAre you sure you're not thinking of billing alerts? AFAIK there is still no way to set spending limits at GCP.
replyI'll admit it's a bit obscure But there is info here.
replyhttps://docs.cloud.google.com/apis/docs/capping-api-usage
Or you can do it programmatically.
https://docs.cloud.google.com/billing/docs/how-to/disable-bi...