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Getting Started with CustomJS

This guide will walk you through everything you need to know to start using CustomJS with Make.com, from initial setup to running your first successful automation.

1. Register and obtain your API key

To setup, you need to create an account in customJS. This will allow you to authenticate your requests to the customJS API.

  1. Visit https://www.customjs.space and click Sign in.
  2. Complete registration by either providing your email and password or using your Google account.
  3. Once registered, you will be redirected to the customJS app dashboard. Click Show under API Key to reveal your API key.
    CustomJS V2 API Key
    CustomJS V2 API Key
  4. Once fetched, copy the API key.

2. Create a customJS action in Make

  1. Go to the Make app and open your Make scenario.
  2. Select Custom JS and select Execute inline JavaScript Code.
    CustomJS Make Actions
    CustomJS Make Actions
  3. Click Create Connection.
  4. Enter a connection name and paste the API key you copied earlier. Click Save.
  5. Enter your JavaScript code, input, and select return type. Click Save to finish setting up your module.

3. Your first successful test

Run a simple test to make sure everything is working correctly:

  1. In the JavaScript Code field, enter:
return {
  message: "Hello from CustomJS!",
  timestamp: new Date().toISOString(),
  success: true
};
  1. Leave the Input field empty for now
  2. Set Return Type to Object
  3. Click OK to save the module
  4. Run your scenario to test the connection. You should see an output like:
{
  "message": "Hello from CustomJS!",
  "timestamp": "2024-01-15T10:30:00.000Z",
  "success": true
}

If you see this output, congratulations! Your CustomJS integration is working correctly.

Quick troubleshooting

In case you have any issues, here are some common troubleshooting steps:

Connection issues
  • "Invalid API key": Double-check your API key is copied correctly
  • "Connection failed": Verify you're using the correct CustomJS endpoint
  • Module not found: Ensure you selected "CustomJS" and not a deprecated module
Code issues
  • No output: Check that you have a return statement
  • Unexpected results: Verify your return type matches your data
  • Timeout errors: Keep code execution under 60 seconds per request
Getting help

If you encounter issues:

  1. Check the troubleshooting guide
  2. Review your code for common mistakes above
  3. Test with simple examples first

Next steps

Now that you're set up, explore these guides to learn more about what CustomJS offers:

JavaScript execution:

  • Inline JavaScript - Run any custom JavaScript code directly inside your Make.com scenario without external dependencies.
  • Stored JavaScript - Execute pre-written and centrally managed functions from your CustomJS workspace and use them in Make.com.

Advanced features:

Practical examples: