Securely call Google Cloud Run APIs with service account auth (main-workflow)
n8n10 modulesv1.0Who 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 G
At a glance
Securely call Google Cloud Run APIs with service account auth (main-workflow) is a ready-made n8n workflow you import as a workflow JSON file — no build required. It's free to download. Follow the 5-step import below to go live in minutes.
- Platform
- n8n
- Modules
- 10
- Price
- Free
- Version
- v1.0
About this workflow
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 Google ID token, merges that auth with your context, then calls your Cloud Run URL with Authorization: Bearer <idtoken>. Works great for single calls or looping over items. How to set up General instructions below—see my detailed guide for more info: Build a Secure Google Cloud Run API, Then Call It from n8n (Free Tier) Setup: 1. Create a Cloud Run service and enable Require authentication (Cloud IAM). 2. Create a Google Service Account and grant Cloud Run Invoker on that service. 3. In n8n, import the workflows and update the Vars node (serviceurl, optional servicepath). 4. Create a JWT (PEM) credential from your service account key, then run. 5. Make sure to read the sticky notes in the workflows—they contain helpful pointers and optional configurations. Requirements - Cloud Run service URL (auth required) - Google Service Account with Cloud Run Invoker - Private key JSON fields downloaded from Service Account | needed to generate JWT credentials How to customize Change the HTTP method/path/body in Cloud Run Request, or drop the Service Auth (sub-workflow) into other workflows to reuse the same auth pattern. More details Full write-up (minimal + modular flows), screenshots, and more: Build a Secure Google Cloud Run API, Then Call It from n8n (Free Tier) — by Marco Cassar
How to import this n8n workflow
- 1
Download the workflow JSON file after purchase.
- 2
Open n8n → click the menu → Import from File.
- 3
Select the downloaded JSON and import.
- 4
Set up credentials for each node that requires them.
- 5
Click Execute Workflow to test, then activate.
Setup guide
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