session-threads changedmanaged-agents/session-threads
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654654If a subagent needs something from your client, such as [permission](https://platform.claude.com/docs/en/managed-agents/events-and-streaming#tool-confirmation) to run a tool call or the [result of a custom tool](https://platform.claude.com/docs/en/managed-agents/events-and-streaming#handling-custom-tool-calls), the event is cross-posted to the **primary thread** with `session_thread_id` identifying the originating session thread. A tool call needs your permission under `always_ask`, or under [`auto`](https://platform.claude.com/docs/en/managed-agents/permission-policies#let-the-server-evaluate-each-call-with-auto) when the server reaches no determination.
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656```json
656```text wrap
657657{
658658 "type": "session.thread_status_idle",
659659 "id": "sevt_01ABC...",
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