# Box - Add comment to file action
The Add comment to file action adds a comment to a file in Box. You can add plain text comments or tagged messages that include user mentions.
# Input
Input field | Description |
---|---|
File ID | Enter the ID of the file you plan to comment on. |
Message | Enter the comment text. Required if Tagged message isn't provided. |
Tagged message | Enter a tagged message that includes @mention . Use the format @[id:username] . Required if Message isn't provided. |
# Output
Output field | Description |
---|---|
Type | Type of object, such as comment . |
ID | Unique identifier of the comment. |
Is reply comment | Indicates if the comment is a reply to another comment. |
Message | The text of the comment. |
Created by | User who created the comment. |
Created at | Timestamp when the comment was created. |
Modified at | Timestamp when the comment was last modified. |
Item | The file that the comment is associated with. |
Last updated: 10/3/2025, 8:10:59 PM