Generally Available: Extending Google Workspace Studio with add-ons is now generally available.

This release includes the following features and updates:

• Custom starters (triggers): You can now build starters that allow your app or service to notify Google Workspace Studio when an event occurs and initiate workflow executions. In the API and add-on manifest, starters are defined as workflowTriggers. To learn more, see Build a starter.
• Google Workspace Studio API: The Google Workspace Studio API is now available, allowing third-party services and webhooks to notify Studio and fire triggers. For details, see the REST API reference and RPC API reference.

To learn more, see Automate workflows with custom starters and steps, third-party integrations, and webhooks in Workspace Studio on the Google Workspace Updates blog.

Generally Available: You can now configure and respond to message actions in Google Chat. Message actions let users invoke your Chat app from the message context menu. This feature is available for both Google Chat apps and Google Workspace Add-ons that extend Google Chat.

Developer Preview: You can now configure and respond to message actions in Google Chat. Message actions let users invoke your Chat app from the message context menu. This feature is available for both Google Chat apps and Google Workspace Add-ons that extend Google Chat through the Developer Preview Program.

Generally Available: The Dialogflow integrations for Google Workspace Add-ons that extend Google Chat is now generally available. These integrations let add-ons use Dialogflow CX or Dialogflow ES to understand and respond to user queries in natural language. For more information, see Build a Dialogflow CX Chat app or Build a Dialogflow ES Chat app.

Feature

Generally Available: The Google Cloud Pub/Sub integration for Google Workspace Add-ons that extend Google Chat is now generally available. This integration allows add-ons to receive and respond to events from Google Chat using Pub/Sub. For more information, see Build a Chat app that uses Pub/Sub.

Developer Preview: You can now build Chat apps that extend Google Workspace add-ons using Apps Script's AddOnsResponseService. For details, see AddOns Response Service.

Other

The Add-ons samples gallery now lets you find samples by products, languages, sample type, and add-on type. The gallery also features the following new samples:

• Build Chat apps using Agent2Agent agents, ADK AI agents, Dialogflow ES, and Dialogflow CX
• Plan travels with an AI agent accessible across Google Workspace
• Analyze and label Gmail messages with Gemini and Vertex AI

Limited Preview: Extending Google Workspace Studio with add-ons is in limited preview.

Developer Preview: You can now build Dialogflow CX and Dialogflow ES Chat apps as Google Workspace add-ons.

Generally Available: You can now build add-ons that extend Google Workspace Studio (previously known as Google Workspace Flows). For details, see Extend Google Workspace Studio.

For ideas about what you can build, see Introducing Google Workspace Studio: Automate everyday work with AI agents in the Google Workspace blog.

Gemini Alpha: As part of the Gemini Alpha program, you can now build add-ons that extend Google Workspace Flows. For details, see Extend Google Workspace Flows.

Generally available: You can now build Google Chat apps as Google Workspace add-ons. For details, see Extend Google Chat.

Developer Preview: Starting on June 16, 2025, the following default Apps Script function names for Google Chat app triggers will change:

• For Added to space triggers, the default function name will change from onAddToSpace to onAddedToSpace.
• For Removed from space triggers, the default function name will change from onRemoveFromSpace to onRemovedFromSpace.

If your Chat app responds to being added or removed from Chat spaces, you can address this breaking change and avoid any potential errors by doing one of the following:

• In your Apps Script project, update the name of your functions to onAddedToSpace and onRemovedFromSpace. If required, create another versioned deployment of your Apps Script project and save the new deployment ID in the Chat API Configuration page in the Google Cloud console.
• In the Google Cloud console, open the Chat API Configuration page and in the Triggers section, update the function name for the Added to space and Removed from space triggers so that they use the function name that you're currently using in your Apps Script project.

To learn how to update your Chat app configuration in the Google Cloud console, see Configure a Google Chat app.

For Google Workspace add-ons that extend Google Chat, the invoked_function field is no longer part of the Common event object. Use the parameters field to determine and handle user interactions.

If your application doesn't depend on the invoked_function field, no action is needed.

If your application used the invoked_function field, see to the documentation for an example that uses the parameters field to create interactive widgets.

Generally Available: Granular OAuth permissions are now supported for HTTP Google Workspace add-ons. The granular OAuth consent screen lets users specify which individual OAuth scopes they want to authorize.

Keep the following dates in mind when you're building or modifying add-ons:

• HTTP Google Workspace add-ons built after May 27, 2025 must support granular consent.
• Existing add-ons have until December 1, 2025 to add support for granular consent.
• After December 1, 2025, all HTTP Google Workspace add-ons must support granular consent.

For more information about how to add support for granular consent, refer to Build a Google Workspace add-on using HTTP endpoints.

For Google Workspace add-ons that extend Google Chat, event_time timestamps are serialized and match the serialization of legacy Google Chat apps. You can now use the same timestamp-handling logic in both legacy Chat apps, and in your Workspace add-ons that extend Google Chat.

Previously, timestamps were serialized in the following format:

"eventTime": {
 "seconds": 1.742601948E9
 "nanos": 7.01868E8
}

After this fix, timestamps are serialized in the following format that shows the date and time:

"eventTime": "2025-03-24T16:31:21.165203Z"

See the Event object in the Google Chat API.

Generally available: Chat apps can respond to quick commands. To use quick commands, users select the command from the message reply area in a Chat space. To learn more, see Respond to Google Chat app commands.

When building Google Workspace Add-on user interfaces, the following functionality is now available:

• TextInput Format Validation.
• Required inputs submission validation for TextInput, DateTimePicker, dropdown selector, and multiselect widgets. To learn more, see addRequiredWifget and setAllWidgetsAreRequired.

Developer Preview: To respond to slash commands, Chat apps must now use the AppCommandPayload instead of a MessagePayload. To learn more, see Respond to slash commands.

Feature

Developer Preview: Quick commands are a new way for users to invoke and interact with a Chat app directly without typing a slash command. For details, see Respond to quick commands in Google Chat.

Developer Preview: You can now use the following widgets when building user interfaces for Add-ons:

• Chip
• Overflow menu
• Material buttons
• Collapsible text paragraph
• Customizable control button of a collapsible section

Developer Preview: You can now build Google Chat apps as Google Workspace Add-ons. For details, see Extend Google Chat.

Generally Available: Google Sheets now supports smart chips for link previews to third-party resources. To learn more, see Preview links with smart chips.

Google Workspace administrators can now turn on an allowlist in the admin console to control which external domains users can access through Apps Script's URL Fetch service.

• If you're using a script or add-on that accesses external domains, work with your administrator to add those URLs to the admin allowlist.
• If you've published an add-on on the Google Workspace Marketplace, it might be helpful to list the URLs that admins should add to their allowlist on your Marketplace listing.

For more information, refer to the Google Workspace Admin Help article: Allow only certain external connections for Apps Script and Sheets.

(Generally Available): Multiselect menus are now generally available for Add-ons.

For more information refer to the following:

• SelectionInput for Apps Script
• SelectionInput for HTTP runtimes

Feature

(Generally Available): Columns are now generally available for Add-ons.

For more information refer to the following:

• Columns for Apps Script
• Columns for HTTP runtimes

The default property for the TextButtonStyle enum in the Apps Script Card Service has been renamed from TEXT to OUTLINED to align with the Google Material 3 design system. Existing scripts that use the original default, TEXT, render the same as the new default, OUTLINED.

(Generally Available): The LinkPreview class has been added to the Apps Script Card service. This class lets you control various aspects of link previews, including the smart chip title, the link preview title, and the link preview card.

(Developer Preview): Multiselect menus are now in Developer Preview for Add-ons.

For more information refer to the following:

• SelectionInput for Apps Script
• SelectionInput for other runtimes

Feature

(Developer Preview): Columns are now in Developer Preview for Add-ons.

For more information refer to the following:

• Columns for Apps Script
• Columns for other runtimes

(Generally Available): Google Workspace Add-ons now support third-party resource creation from the @ menu in Google Docs. This feature is gradually rolling out over the next few weeks. To use this feature, see Create third-party resources from the @ menu.

(Generally available): Google Workspace Add-ons now support link previews in Google Sheets and Slides. To learn more, see Preview links with smart chips.

(Developer Preview): Google Workspace Add-ons now support third-party resource creation from the @ menu in Google Docs. To use this feature, see Create third-party resources from the @ menu.

(Developer Preview): Available as part of the Google Workspace Developer Preview Program, which grants early access to certain features.

Google Workspace Add-ons now support link previews in Google Sheets and Slides. To learn more, see Preview links with smart chips.

The user interface (UI) of Google Workspace Add-ons has been upgraded to better reflect Material 3 guidelines (GM3). The updated interface is generally available on web for Gmail, Calendar, Drive, Docs, Sheets, and Slides. New and existing Google Workspace Add-ons automatically reflect the new interface.