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Advanced Chat Service | Apps Script

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The Advanced Chat service lets you use the Google Chat API in Apps Script. This API allows scripts to find, create, and modify Chat spaces, add or remove members to spaces, and read or post messages with text, cards, attachments, and reactions.

• An Apps Script Google Chat app configured on the Chat API configuration page in the Google Cloud console. The app's Apps Script project must use a standard Google Cloud project instead of the default one created automatically for Apps Script projects. To create a compatible Google Chat app, see Build a Google Chat app with Google Apps Script.
• Authentication configured for the Chat app. Performing an action on behalf of a user requires user authentication. Performing an action as the Chat app requires app authentication with a service account. To check which form of authentication a Chat API method supports, see Types of required authentication for Google Chat API calls.

For more information about this service, see the Chat API reference documentation. Like all advanced services in Apps Script, the Chat service uses the same objects, methods, and parameters as the public API.

These samples show you how to perform common Google Chat API actions using the advanced service.

The following example demonstrates how to post a message to a Chat space on behalf of the user.

1. Add the chat.messages.create authorization scope to the Apps Script project's appsscript.json file:

   "oauthScopes": [
     "https://www.googleapis.com/auth/chat.messages.create"
   ]
   

2. Add a function like this one to the Apps Script project's code:

The following example demonstrates how to post a message to a Chat space on behalf of the app. Using the advanced Chat service with a service account doesn't require you to specify authorization scopes in appsscript.json. For details about authentication with service accounts, see Authenticate as a Google Chat app.

The following example demonstrates how to get information about a Chat space.

1. Add the chat.spaces.readonly authorization scope to the Apps Script project's appsscript.json file:

   "oauthScopes": [
     "https://www.googleapis.com/auth/chat.spaces.readonly"
   ]
   

2. Add a function like this one to the Apps Script project's code:

The following example demonstrates how to create a Chat space.

1. Add the chat.spaces.create authorization scope to the Apps Script project's appsscript.json file:

   "oauthScopes": [
     "https://www.googleapis.com/auth/chat.spaces.create"
   ]
   

2. Add a function like this one to the Apps Script project's code:

The following example demonstrates how to list all the members of a Chat space.

1. Add the chat.memberships.readonly authorization scope to the Apps Script project's appsscript.json file:

   "oauthScopes": [
     "https://www.googleapis.com/auth/chat.memberships.readonly"
   ]
   

2. Add a function like this one to the Apps Script project's code:

If you encounter Error 400: invalid_scope with the error message Some requested scopes cannot be shown, it means you haven't specified any authorization scopes in the Apps Script project's appsscript.json file. In most cases, Apps Script automatically determines what scopes a script needs, but when you use the Chat advanced service, you must manually add the authorization scopes that your script uses to your Apps Script project's manifest file. See Setting explicit scopes.

To resolve the error, add the appropriate authorization scopes to the Apps Script project's appsscript.json file as part of the oauthScopes array. For example, to call the spaces.messages.create method, add the following:

"oauthScopes": [
  "https://www.googleapis.com/auth/chat.messages.create"
]

The Advanced Chat service doesn't support:

• The Chat API method media.download.
• Chat API methods available in Developer Preview

To download a message attachment or call a developer preview method, use UrlFetchApp instead.

Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.

Last updated 2025-08-04 UTC.

[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-04 UTC."],[[["The Advanced Chat service enables Apps Script to interact with the Google Chat API, allowing scripts to manage spaces, members, and messages."],["Utilizing this service requires setting up a Google Chat app in the Google Cloud console and configuring proper authentication (user or app)."],["Sample code snippets demonstrate common actions like posting messages and managing spaces using user or app credentials."],["The service mirrors the Chat API's objects and methods but has limitations, such as not supporting media downloads or Developer Preview methods."],["Troubleshooting steps and workarounds are provided for potential issues like scope errors."]]],[]]

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