Set credentials dynamically using expressions

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Important notice

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

1. Workflow Overview

How it works This workflow shows how to set credentials dynamically using expressions. It accepts an API key via a form, then uses it in the NASA node to authenticate a request. Setup steps First, ...

Best for

Miscellaneous automation workflows
intermediate n8n builders looking for reusable templates

Tools used

n8n-nodes-base.formtrigger, n8n-nodes-base.nasa, n8n-nodes-base.respondtowebhook, n8n-nodes-base.stickynote

Source and attribution

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

Original n8n.io source

1.1 Workflow description

Title: Set credentials dynamically using expressions
Workflow name: Set credentials dynamically using expressions

How it works

This workflow shows how to set credentials dynamically using expressions. It accepts an API key via a form, then uses it in the NASA node to authenticate a request.

Setup steps

First, set up your NASA credential:

Create a new NASA credential.
Hover over API Key.
Toggle Expression on.
In the API Key field, enter {{ $json["Enter your NASA API key"] }}.

Then, test the workflow:

Get an API key from NASA
Select Test workflow
Enter your key using the form.
The workflow runs and sends you to the NASA picture of the day.

For more information on expressions, refer to n8n documentation | Expressions.

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 - n8n Form Trigger

Type / Role: n8n-nodes-base.formTrigger - formTrigger
Config choices: Version 2

Block 2 - NASA

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

Block 3 - Respond to Webhook

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

Block 4 - Sticky Note

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

Block 5 - Sticky Note1

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

Block 6 - Sticky Note2

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

Block 7 - Sticky Note3

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

3. Summary Table

Workflow	Set credentials dynamically using expressions
Complexity	intermediate
Nodes	7
Categories	Miscellaneous
Author	Deborah
Published	10 Apr 2024

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/2223/2223.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 Miscellaneous workflows

Frequently asked questions

What does Set credentials dynamically using expressions 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 Miscellaneous use case.

Deborah

5 workflows

Nodes

n8n-nodes-base.formtrigger n8n-nodes-base.nasa n8n-nodes-base.respondtowebhook n8n-nodes-base.stickynote

Complexity

intermediate

Published 10 Apr 2024

Likes 0

View on n8n.io Download Workflow

Install path: /data/workflows/2223/2223.json

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Set credentials dynamically using expressions

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

How it works

Setup steps

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - n8n Form Trigger

Block 2 - NASA

Block 3 - Respond to Webhook

Block 4 - Sticky Note

Block 5 - Sticky Note1

Block 6 - Sticky Note2

Block 7 - Sticky Note3

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