Securely call private Google Cloud Run APIs with JWT authentication (simplified)

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Important notice

This workflow is provided as-is. Please review and test before using in production.

1. Workflow Overview

Who it’s for? Anyone who wants a dead simple, free tier friendly way to run custom API logic on Google Cloud Run and call it securely from n8n—no public exposure, no local hosting. What it does Min...

Best for

DevOps automation workflows
Multimodal AI automation workflows
intermediate n8n builders looking for reusable templates

Tools used

n8n-nodes-base.jwt, n8n-nodes-base.set, n8n-nodes-base.httprequest, n8n-nodes-base.stickynote, n8n-nodes-base.manualtrigger

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by Marco Cassar.

Original n8n.io source

1.1 Workflow description

Title: Securely call private Google Cloud Run APIs with JWT authentication (simplified)
Workflow name: Securely call private Google Cloud Run APIs with JWT authentication (simplified)

Who it’s for?

Anyone who wants a dead-simple, free-tier friendly way to run custom API logic on Google Cloud Run and call it securely from n8n—no public exposure, no local hosting.

What it does

Minimal flow: Set → JWT (sign) → HTTP (token exchange) → HTTP (call Cloud Run with Authorization: Bearer <id_token> ). No caching, no extras—just enough to authenticate and hit your endpoint.

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:

Create a Cloud Run service and enable Require authentication (Cloud IAM).
Create a Google Service Account with Cloud Run Invoker on that service.
In n8n, set service_url, client_email, token_uri (https://oauth2.googleapis.com/token) in Set.
Create a JWT (PEM) credential from your service account key (paste the full BEGIN/END block).
Run the workflow; the second HTTP node calls your Cloud Run URL with the ID token.

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

More details

Full write-up (minimal + modular versions):

Build a Secure Google Cloud Run API, Then Call It from n8n (Free Tier)

1.2 Logical Blocks

This catalog entry is organized from the workflow JSON. The node-level section below shows the executable blocks available for review before importing the template.

2. Block-by-Block Analysis

Block 1 - JWT

Type / Role: n8n-nodes-base.jwt - jwt
Config choices: Version 1

Block 2 - Edit Fields

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

Block 3 - Cloud Run Request

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 4 - Bearer YOUR_TOKEN_HERE Request

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 5 - Sticky Note1

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 6 - Execute

Type / Role: n8n-nodes-base.manualTrigger - manualTrigger
Config choices: Version 1

Block 7 - Sticky Note2

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 8 - Sticky Note3

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 9 - Sticky Note

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 10 - Sticky Note4

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

3. Summary Table

Workflow	Securely call private Google Cloud Run APIs with JWT authentication (simplified)
Complexity	intermediate
Nodes	10
Categories	DevOps, Multimodal AI
Author	Marco Cassar
Published	19 Aug 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/7571/7571.json as the source template for this automation.
2. Import the template into n8n

Open n8n, import the downloaded JSON, and review each node before activating the workflow.
3. Configure credentials and variables

Replace placeholder credentials, API keys, webhook URLs, account IDs, and environment-specific values with your own settings.
4. Test with sample data

Run the workflow manually or in a staging workspace, inspect node output, and confirm downstream systems receive the expected data.
5. Activate and monitor

Enable the workflow only after testing, then monitor executions, errors, and rate limits during the first production runs.

5. General Notes & Resources

Review imported nodes carefully before activation. This catalog entry is intended to help you inspect the workflow structure, understand required services, and find related templates faster.

Node names, credentials, schedules, webhook paths, and external service limits may need adjustment for your workspace.

Download workflow JSON Original n8n.io source DevOps workflows Multimodal AI workflows

Frequently asked questions

What does Securely call private Google Cloud Run APIs with JWT authentication (simplified) do?

What do I need before importing this workflow?

Review the workflow JSON, configure any required credentials in n8n, and test the automation in a safe workspace before using it in production.

Can I customize this workflow?

Yes. Use the block-by-block analysis and the downloadable JSON to inspect each node, then adjust credentials, prompts, schedules, filters, or destinations for your DevOps, Multimodal AI use case.

Marco Cassar

3 workflows

Nodes

n8n-nodes-base.jwt n8n-nodes-base.set n8n-nodes-base.httprequest n8n-nodes-base.stickynote n8n-nodes-base.manualtrigger

Complexity

intermediate

Published 19 Aug 2025

Likes 0

View on n8n.io Download Workflow

Install path: /data/workflows/7571/7571.json

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Securely call private Google Cloud Run APIs with JWT authentication (simplified)

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

Who it’s for?

What it does

How to set up

Requirements

More details

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - JWT

Block 2 - Edit Fields

Block 3 - Cloud Run Request

Block 4 - Bearer YOUR_TOKEN_HERE Request

Block 5 - Sticky Note1

Block 6 - Execute

Block 7 - Sticky Note2

Block 8 - Sticky Note3

Block 9 - Sticky Note

Block 10 - Sticky Note4

3. Summary Table

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

2. Import the template into n8n

3. Configure credentials and variables

4. Test with sample data

5. Activate and monitor

5. General Notes & Resources

Frequently asked questions