Dynamic credentials using expressions

For n8n, this workflow allows users to dynamically set and test NASA API credentials through a simple form submission. By entering their API key, users can seamlessly integrate with NASA's services and receive the picture of the day, enhancing their experience with real-time data access.

7/8/2025
7 nodes
Simple
webhooksimpleformtriggernasarespondtowebhooksticky noteintegrationapi
Categories:
Simple WorkflowWebhook TriggeredWeb Scraping & Data Extraction
Integrations:
FormTriggerNasaRespondToWebhookSticky Note

Target Audience

This workflow is designed for:
- Developers looking to integrate NASA's API into their applications without hardcoding credentials.
- Data Scientists who need to access NASA's data for analysis and visualization.
- Educators and Students interested in demonstrating API usage and dynamic credential management in programming courses.
- Automation Enthusiasts who want to streamline workflows involving external APIs.

Problem Solved

This workflow addresses the challenge of securely managing API credentials by allowing users to dynamically input their NASA API key through a form. This eliminates the need for hardcoded keys, enhancing security and flexibility in API interactions.

Workflow Steps

  • Form Trigger: The workflow begins with a form that prompts the user to enter their NASA API key. This form is accessible via a webhook.
    2. User Submission: Upon submission, the user's API key is captured and made available for subsequent nodes.
    3. NASA Node: The workflow passes the user's API key to the NASA node, which allows for interactions with NASA's API, such as retrieving the picture of the day.
    4. Respond to Webhook: Finally, the workflow redirects the user to the retrieved image, providing immediate feedback and results from their input.

    • Customization Guide

    Users can customize this workflow by:
    - Modifying the Form: Change the form title, description, or fields to collect different data as needed.
    - Updating NASA Node Parameters: Adjust the NASA node settings to retrieve different datasets or images based on user interests.
    - Changing the Redirect URL: Update the URL in the Respond to Webhook node to redirect users to a different endpoint or page after form submission.
    - Adding Additional Nodes: Incorporate more processing or notification nodes to enhance the workflow, such as sending emails or logging responses.