Securely Call Google Cloud Run APIs with Service Account Auth (main-workflow)

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Who it’s for? Anyone who wants a simple, secure way to call a Google Cloud Run endpoint from n8n—without exposing it publicly. People who want a cheap/free-tier way to run custom API logic without hosting n8n or spinning up servers. Example: you’ve got scraping code that needs specific system/python libs—build it into a Dockerfile on Cloud Run, then call it as a secure endpoint from n8n. How it works This is a conjunctive workflow: the main workflow calls Service Auth (sub-workflow) to get a