Conversation attachments
Delete Attachment
Remove a staged attachment the user cleared before sending. The record is soft-deleted to expired and the stored bytes are reclaimed, so an unsent file doesn’t linger.
Returns 409 if the attachment is already bound to a sent message — a delete cannot retroactively strip a file out of a turn that happened. Idempotent otherwise.
DELETE
Delete Attachment
Headers
Organization ID for user PATs (pat_ prefix tokens)
Response
Successful Response
The response is of type Response Delete Attachment Core Conversations Conversation Id Attachments Attachment Id Delete · object.
Delete Attachment

