AiSendStreamBody

Shared body of the two streaming send endpoints (sendWithStream and its OpenAI-framed twin) — the Chat action is implied, so there is no actionType.

Name	Type	Description	Notes
threadId	String	Target thread; a new one is created (with an auto title) when omitted.	[optional] [example: 11111111-1111-1111-1111-111111111111]
userMessage	AiThreadMessageLike	The user turn to send.	[required] [example: {role=user, content=Summarise the attached contract.}]
actionArgs	AiActionArgs	Per-request engine options: extra tools, reasoning, prompt override.	[optional] [example: {isReasoning=false}]
entityId	String	Optional entity (room) scope for profile resolution.	[optional] [example: 1234]
profileId	String	Session-level profile override for this request only.	[optional] [example: 00000000-0000-0000-0000-000000000000]