Experimental
UNSTABLE
This capability is not part of the spec yet, and may be removed or changed at any point.
Details of a failure that ended a child's foreground work.
Optional
The failure, as a JSON-RPC error object.
Optional. Omitted or null both mean the agent is not reporting failure details. Agents SHOULD include it.
null
UNSTABLE
This capability is not part of the spec yet, and may be removed or changed at any point.
Details of a failure that ended a child's foreground work.