# HostApp

The Google Workspace application for a Google Workspace add-on or Google Chat app.

For add-ons, the Workspace application from which a Google Workspace add-on launches. For Chat apps, the host app is always `CHAT`.

| Enums ||
|---|---|
| `UNSPECIFIED_HOST_APP` | Google can't identify a host app. |
| `GMAIL` | The add-on launches from Gmail. |
| `CALENDAR` | The add-on launches from Google Calendar. |
| `DRIVE` | The add-on launches from Google Drive. |
| `DEMO` | Not used. |
| `DOCS` | The add-on launches from Google Docs. |
| `MEET` | The add-on launches from Google Meet. |
| `SHEETS` | The add-on launches from Google Sheets. |
| `SLIDES` | The add-on launches from Google Slides. |
| `DRAWINGS` | The add-on launches from Google Drawings. |
| `CHAT` | A Google Chat app. |