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Use this guide to add a button in Google Sheets that triggers a Parabola flow via webhook.

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Prerequisites

  • A Parabola flow with a webhook trigger enabled
  • A Google Sheet where you want the button

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Step-by-step setup

1

Get your Parabola webhook URL

  1. Open your Parabola flow
  2. Click the lightning bolt icon (triggers)
  3. Toggle on Webhooks
  4. Copy the generated webhook URL
  5. Make sure the flow is turned on
2

Add the Apps Script

  1. Open your Google Sheet
  2. Go to Extensions > Apps Script
  3. Delete any boilerplate code in Code.gs
  4. Paste this code:
function triggerParabolaFlow() {
  var url = "PASTE_YOUR_WEBHOOK_URL_HERE";
  UrlFetchApp.fetch(url, { method: "post", muteHttpExceptions: true });
  SpreadsheetApp.getActiveSpreadsheet().toast("Flow triggered!", "Parabola", 3);
}
  1. Replace PASTE_YOUR_WEBHOOK_URL_HERE with your webhook URL
  2. Press Ctrl+S to save
3

Import the macro

  1. Go back to your Google Sheet
  2. Click Extensions > Macros > Import macros
  3. Find triggerParabolaFlow and click Add function
4

Create the button

  1. Go to Insert > Drawing
  2. Create a shape and add text like “Run Parabola Flow”
  3. Click Save and Close
5

Assign the script

  1. Single click the drawing
  2. Click the three dots menu in the top-right corner
  3. Select Assign script
  4. Type exactly: triggerParabolaFlow
  5. Click OK
6

Authorize the script

The first click will prompt authorization. Click Continue, select your account, and click Allow. If you see an “unverified app” warning, click Advanced > Go to [project name].

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Troubleshooting

IssueSolution
”Script function could not be found”Import the macro via Extensions > Macros > Import macros
Toast error about nullRun the script from the sheet button, not the Apps Script editor
Flow doesn’t runMake sure the flow is turned on in Parabola
Last modified on April 9, 2026