Optionalevent_Optional client-generated ID used to identify this event.
The item to add to the conversation.
Optionalprevious_The ID of the preceding item after which the new item will be inserted. If not
set, the new item will be appended to the end of the conversation. If set to
root, the new item will be added to the beginning of the conversation. If set
to an existing ID, it allows an item to be inserted mid-conversation. If the ID
cannot be found, an error will be returned and the item will not be added.
The event type, must be conversation.item.create.
Add a new Item to the Conversation's context, including messages, function calls, and function call responses. This event can be used both to populate a "history" of the conversation and to add new items mid-stream, but has the current limitation that it cannot populate assistant audio messages.
If successful, the server will respond with a
conversation.item.createdevent, otherwise anerrorevent will be sent.