Start a thread with the default agent
Authentication
Bearer authentication of the form Bearer <token>, where token is your auth token.
Request
The request that founds the thread (frozen into the first run’s snapshot).
The agent the thread talks to. Omit for the default agent. Every run in the thread (including rollover successors) executes this agent.
Files to attach to the first run. Omit for a prompt-only start.
Start the thread in this space instead of the caller’s private desk — everyone who holds space:contribute on it can then read and continue the thread. Requires space:contribute (404 otherwise). A desk id (me:…) is never a valid target (400 cannot_target_desk).
Response
The thread’s first run.