Manifests for Google Workspace Add-ons

An add-on uses a manifest file to configure certain details about the app and its operation.

This documentation covers the details of configuring a manifest for a Google Workspace Add-on.

Manifest structure for Google Workspace Add-ons

Google Workspace Add-ons use the manifest file to define several aspects of the add-on's appearance and behavior.

The manifest properties for Google Workspace Add-ons are organized under the addOns section of the manifest object structure.

• For information about Apps Script manifest files, refer to Manifest structure.
• For information about manifest files for add-ons built with HTTP endpoints, refer to REST Resource: projects.deployments

Sample Google Workspace Add-on manifest configuration

The following manifest sample shows the section of a manifest file that defines a Google Workspace Add-on, including the following aspects:

• The addOns.common section of the manifest defines the name, logo URL, colors, and other general, host-independent settings for the add-on.
• The manifest defines a common homepage, but also defines Calendar, Drive, Docs, Sheets, and Slides-specific homepages. Gmail uses the default homepage.
• The sample manifest settings enable the following:
  • Calendar eventOpen and eventUpdated triggers.
  • (Apps Script only) Two Calendar conference solutions.
  • Two universal actions.
  • A Drive onItemsSelectedTrigger.
  • A Gmail compose action and contextual trigger.
  • A Docs linkPreviewTriggersobject. To learn about this trigger, see Preview links with smart chips.
  • A Docs createActionTriggers object. To learn about this trigger, see Create third-party resources from the @ menu.
  • File-specific interfaces for Docs, Sheets, and Slides.
• The oauthScopes field sets authorization scopes for the project (Typically required for add-ons).
• (Apps Script only) The urlFetchWhitelist field is a field that ensures that any fetched endpoints match a specified list of HTTPS URL prefixes. For more information, see Allowlist URLs.

The links in the sample direct to the descriptions of that field in the corresponding manifest reference documentation for Apps Script and HTTP Google Workspace Add-ons.

{
  "addOns": {
    "calendar": {
      "createSettingsUrlFunction": "getConferenceSettingsPageUrl",
      "conferenceSolution": [{
        "id": "my-video-conf",
        "logoUrl": "https://lh3.googleusercontent.com/...",
        "name": "My Video Conference",
        "onCreateFunction": "onCreateMyVideoConference"
      }, {
        "id": "my-streamed-conf",
        "logoUrl": "https://lh3.googleusercontent.com/...",
        "name": "My Streamed Conference",
        "onCreateFunction": "onCreateMyStreamedConference"
      }],
      "currentEventAccess": "READ_WRITE",
      "eventOpenTrigger": {
        "runFunction": "onCalendarEventOpen"
      },
      "eventUpdateTrigger": {
        "runFunction": "onCalendarEventUpdate"
      },
      "eventAttachmentTrigger": {
        "label": "My Event Attachment",
        "runFunction": "onCalendarEventAddAttachment"
      },
      "homepageTrigger": {
        "runFunction": "onCalendarHomePageOpen",
        "enabled": true
      }
    },
    "common": {
      "homepageTrigger": {
        "runFunction": "onDefaultHomePageOpen",
        "enabled": true
      },
      "layoutProperties": {
        "primaryColor": "#ff392b",
        "secondaryColor": "#d68617"
      },
      "logoUrl": "https://ssl.gstatic.com/docs/script/images/logo/script-64.png",
      "name": "Demo Google Workspace Add-on",
      "openLinkUrlPrefixes": [
        "https://mail.google.com/",
        "https://script.google.com/a/google.com/d/",
        "https://drive.google.com/a/google.com/file/d/",
        "https://www.example.com/"
      ],
      "universalActions": [{
        "label": "Open settings",
        "runFunction": "getSettingsCard"
      }, {
        "label": "Open Help URL",
        "openLink": "https://www.example.com/help"
      }],
      "useLocaleFromApp": true
    },
    "drive": {
      "homepageTrigger": {
        "runFunction": "onDriveHomePageOpen",
        "enabled": true
      },
      "onItemsSelectedTrigger": {
        "runFunction": "onDriveItemsSelected"
      }
    },
    "gmail": {
      "composeTrigger": {
        "selectActions": [
          {
            "text": "Add images to email",
            "runFunction": "getInsertImageComposeCards"
          }
        ],
        "draftAccess": "METADATA"
      },
      "contextualTriggers": [
        {
          "unconditional": {},
          "onTriggerFunction": "onGmailMessageOpen"
        }
      ]
    },
    "docs": {
      "homepageTrigger": {
        "runFunction": "onEditorsHomepage"
      },
      "onFileScopeGrantedTrigger": {
        "runFunction": "onFileScopeGrantedEditors"
      },
      "linkPreviewTriggers": [
        {
        "runFunction": "onLinkPreview",
        "patterns": [
            {
              "hostPattern": "example.com",
              "pathPrefix": "example-path"
            }
        ],
        "labelText": "Link preview",
        "localizedLabelText": {
          "es": "Link preview localized in Spanish"
        },
        "logoUrl": "https://www.example.com/images/smart-chip-icon.png"
        }
      ],
      "createActionTriggers": [
        {
          "id": "exampleId",
          "labelText": "Example label text",
          "localizedLabelText": {
            "es": "Label text localized in Spanish"
          },
          "runFunction": "exampleFunction",
          "logoUrl": "https://www.example.com/images/case.png"
        }
      ]
    },
    "sheets": {
      "homepageTrigger": {
        "runFunction": "onEditorsHomepage"
      },
      "onFileScopeGrantedTrigger": {
        "runFunction": "onFileScopeGrantedEditors"
      }
    },
    "slides": {
      "homepageTrigger": {
        "runFunction": "onEditorsHomepage"
      },
      "onFileScopeGrantedTrigger": {
        "runFunction": "onFileScopeGrantedEditors"
      }
    }
  },
  "oauthScopes": [
    "https://www.googleapis.com/auth/calendar.addons.execute",
    "https://www.googleapis.com/auth/calendar.addons.current.event.read",
    "https://www.googleapis.com/auth/calendar.addons.current.event.write",
    "https://www.googleapis.com/auth/drive.addons.metadata.readonly",
    "https://www.googleapis.com/auth/gmail.addons.current.action.compose",
    "https://www.googleapis.com/auth/gmail.addons.current.message.metadata",
    "https://www.googleapis.com/auth/userinfo.email",
    "https://www.googleapis.com/auth/script.external_request",
    "https://www.googleapis.com/auth/script.locale",
    "https://www.googleapis.com/auth/script.scriptapp",
    "https://www.googleapis.com/auth/drive.file",
    "https://www.googleapis.com/auth/documents.currentonly",
    "https://www.googleapis.com/auth/spreadsheets.currentonly",
    "https://www.googleapis.com/auth/presentations.currentonly",
    "https://www.googleapis.com/auth/workspace.linkpreview"
  ],
  "urlFetchWhitelist": [
    "https://www.example.com/myendpoint/"
  ]
}

{
  "addOns": {
    "calendar": {
      "currentEventAccess": "READ_WRITE",
      "eventOpenTrigger": {
        "runFunction": "https://myownpersonaldomain.com/mypage?trigger=onCalendarEventOpen"
      },
      "eventUpdateTrigger": {
        "runFunction": "https://myownpersonaldomain.com/mypage?trigger=onCalendarEventUpdate"
      },
      "eventAttachmentTrigger": {
        "label": "My Event Attachment",
        "runFunction": "https://myownpersonaldomain.com/mypage?trigger=onCalendarEventAddAttachment"
      },
      "homepageTrigger": {
        "runFunction": "https://myownpersonaldomain.com/mypage?trigger=onCalendarHomePageOpen",
        "enabled": true
      }
    },
    "common": {
      "homepageTrigger": {
        "runFunction": "https://myownpersonaldomain.com/mypage?trigger=onDefaultHomePageOpen",
        "enabled": true
      },
      "layoutProperties": {
        "primaryColor": "#ff392b",
        "secondaryColor": "#d68617"
      },
      "logoUrl": "https://ssl.gstatic.com/docs/script/images/logo/script-64.png",
      "name": "Demo Google Workspace Add-on",
      "openLinkUrlPrefixes": [
        "https://mail.google.com/",
        "https://script.google.com/a/google.com/d/",
        "https://drive.google.com/a/google.com/file/d/",
        "https://www.example.com/"
      ],
      "universalActions": [{
        "label": "Open settings",
        "runFunction": "https://myownpersonaldomain.com/mypage?trigger=getSettingsCard"
      }, {
        "label": "Open Help URL",
        "openLink": "https://www.example.com/help"
      }],
      "useLocaleFromApp": true
    },
    "drive": {
      "homepageTrigger": {
        "runFunction": "https://myownpersonaldomain.com/mypage?trigger=onDriveHomePageOpen",
        "enabled": true
      },
      "onItemsSelectedTrigger": {
        "runFunction": "https://myownpersonaldomain.com/mypage?trigger=onDriveItemsSelected"
      }
    },
    "gmail": {
      "composeTrigger": {
        "actions": [
          {
            "label": "Add images to email",
            "runFunction": "https://myownpersonaldomain.com/mypage?trigger=getInsertImageComposeCards"
          }
        ],
        "draftAccess": "METADATA"
      },
      "contextualTriggers": [
        {
          "unconditional": {},
          "onTriggerFunction": "https://myownpersonaldomain.com/mypage?trigger=onGmailMessageOpen"
        }
      ]
    },
    "docs": {
      "homepageTrigger": {
        "runFunction": "https://myownpersonaldomain.com/mypage?trigger=onEditorsHomepage"
      },
      "onFileScopeGrantedTrigger": {
        "runFunction": "https://myownpersonaldomain.com/mypage?trigger=onFileScopeGrantedEditors"
      },
      "linkPreviewTriggers": [
        {
          "runFunction": "https://myownpersonaldomain.com/mypage?trigger=onLinkPreview",
          "patterns": [
              {
                "hostPattern": "example.com",
                "pathPrefix": "example-path"
              }
          ],
          "labelText": "Link preview",
          "localizedLabelText": {
            "es": "Link preview localized in Spanish"
          },
          "logoUrl": "https://www.example.com/images/smart-chip-icon.png"
        }
      ],
      "createActionTriggers": [
        {
          "id": "exampleId",
          "labelText": "Example label text",
          "localizedLabelText": {
            "es": "Label text localized in Spanish"
          },
          "runFunction": "https://myownpersonaldomain.com/mypage?trigger=onCreateAction",
          "logoUrl": "https://www.example.com/images/case.png"
        }
      ]
    },
    "sheets": {
      "homepageTrigger": {
        "runFunction": "https://myownpersonaldomain.com/mypage?trigger=onEditorsHomepage"
      },
      "onFileScopeGrantedTrigger": {
        "runFunction": "https://myownpersonaldomain.com/mypage?trigger=onFileScopeGrantedEditors"
      }
    },
    "slides": {
      "homepageTrigger": {
        "runFunction": "https://myownpersonaldomain.com/mypage?trigger=onEditorsHomepage"
      },
      "onFileScopeGrantedTrigger": {
        "runFunction": "https://myownpersonaldomain.com/mypage?trigger=onFileScopeGrantedEditors"
      }
    }
  },
  "oauthScopes": [
    "https://www.googleapis.com/auth/calendar.addons.execute",
    "https://www.googleapis.com/auth/calendar.addons.current.event.read",
    "https://www.googleapis.com/auth/calendar.addons.current.event.write",
    "https://www.googleapis.com/auth/drive.addons.metadata.readonly",
    "https://www.googleapis.com/auth/gmail.addons.current.action.compose",
    "https://www.googleapis.com/auth/gmail.addons.current.message.metadata",
    "https://www.googleapis.com/auth/userinfo.email",
    "https://www.googleapis.com/auth/script.external_request",
    "https://www.googleapis.com/auth/script.locale",
    "https://www.googleapis.com/auth/script.scriptapp",
    "https://www.googleapis.com/auth/drive.file",
    "https://www.googleapis.com/auth/documents.currentonly",
    "https://www.googleapis.com/auth/spreadsheets.currentonly",
    "https://www.googleapis.com/auth/presentations.currentonly",
    "https://www.googleapis.com/auth/workspace.linkpreview"
  ]
}

Allowlist URLs

You use allowlists to designate specific URLs that are pre-approved for access by your script or add-on. Allowlists help protect user data; when you define an allowlist, script projects can't access URLs that have not been added to the allowlist.

This field is optional when you install a test deployment, but is required when you create a versioned deployment.

You use allowlists when your script or add-on performs the following actions:

• Retrieves or fetches information from an external location (such as HTTPS endpoints) using the Apps Script UrlFetch service. To allowlist URLs for fetching, include the urlFetchWhitelist field in your manifest file.
• Opens or displays a URL in response to a user action (Required for Google Workspace Add-ons that open or display URLs that are external to Google). To allowlist URLs for opening, include the addOns.common.openLinkUrlPrefixes field in your manifest file.

Adding prefixes to your allowlist

When you specify allowlists in your manifest file (by including either the addOns.common.openLinkUrlPrefixes or urlFetchWhitelist field), you must include a list of URL prefixes. The prefixes you add to the manifest must satisfy the following requirements:

• Each prefix must be a valid URL.
• Each prefix must use https://, not http://.
• Each prefix must have a full domain.
• Each prefix must have a non-empty path. For example, https://www.google.com/ is valid but https://www.google.com is not.
• You can use wildcards to match URL subdomain prefixes.
• A single * wildcard can be used in the addOns.common.openLinkUrlPrefixes field to match all links, but this is not recommended as it can expose a user's data to risk and can prolong the add-on review process. Only use a wildcard if your add-on functionality requires it.

When determining if a URL matches a prefix in the allowlist, the following rules apply:

• Path matching is case-sensitive.
• If the prefix is identical to the URL, it is a match.
• If the URL is the same or a child of the prefix, it is a match.

For example, the prefix https://example.com/foo matches the following URLs:

• https://example.com/foo
• https://example.com/foo/
• https://example.com/foo/bar
• https://example.com/foo?bar
• https://example.com/foo#bar

Using wildcards

You can use a single wildcard character (*) to match a subdomain for both the urlFetchWhitelist and addOns.common.openLinkUrlPrefixes fields. You can't use more than one wildcard to match multiple subdomains, and the wildcard must represent the leading prefix of the URL.

For example, the prefix https://*.example.com/foo matches the following URLs:

• https://subdomain.example.com/foo
• https://any.number.of.subdomains.example.com/foo

The prefix https://*.example.com/foo doesn't match the following URLs:

• https://subdomain.example.com/bar (suffix mismatch)
• https://example.com/foo (at least one subdomain must be present)

Some of the prefix rules are enforced when you try to save your manifest. For example, the following prefixes cause an error if they are present in your manifest when you attempt to save:

• https://*.*.example.com/foo (multiple wildcards are forbidden)
• https://subdomain.*.example.com/foo (wildcards must be used as a leading prefix)