message.delta
⚠️
Preview — this feature is being built; the design below is the spec.
Received on the stream and in the event list. A fragment of the agent’s reply as it is written.
Example
id: evt_01JC7M3B
data: {"type": "message.delta", "message_id": "msg_01JC7M3D", "delta": "Your refund for order 88123 "}Fields
| Field | Meaning |
|---|---|
message_id | Groups fragments of one reply. |
delta | Text to append. |
Handling
Append deltas for a live typing effect. Always reconcile with message.completed, which carries the full text.
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