message.ackAcknowledges a durable same-node Sidecat message and stores an invocation trace.
| Field | Value |
|---|---|
| Class | local_transition |
| Owner | sidecatd.message |
| Input schema | sidecat.message_ack_operation_request.v0 |
| Output schema | sidecat.message_ack_response.v0 |
{
"by": "agent:codex",
"message_id": "msg_example"
}