Cancels the session's running turn (session/cancel) and drops its queued messages; a pending wait_thronglet returns the cancelled error. The session is idle afterwards and accepts a new send_message. No-op on an idle session.

Lists valid agent values for run_thronglet: available harnesses with their models and effort levels, unavailable ones with the reason, and the server limits.

Lists thronglet sessions on this machine: description, agent, cwd, state (running | queued | idle | failed), queue length, accepts_messages (false: send_message to it fails), timestamps and the last error. Live state is this server's; a session run by another throng instance shows what its record says.

Runs an agent of an installed harness (see list_harnesses) on a task in cwd and returns its final message as JSON {session_id, text, stop_reason, usage, duration_s, warnings?}; with schema, structured replaces text. description names the thronglet for listings. With background: true the call returns {session_id, state, queued} as soon as the turn runs; collect the result with wait_thronglet.

Sends the next message into an earlier session (session_id from run_thronglet) and returns the same JSON as run_thronglet. A message to a session whose turn is still running waits for that turn to end: turns on one session never overlap. With background: true the call returns {session_id, state, queued} as soon as the turn runs; collect the result with wait_thronglet. steer: true interrupts the running turn and delivers this message next; queued messages follow it. A session whose harness cannot resume takes no further message, steer included: list_thronglets shows it as accepts_messages: false.

Waits until a session has no running or queued turn and returns the last turn's result: the same JSON as run_thronglet, or its error. With timeout_s elapsed returns {session_id, state, queued} instead. Idempotent: the result is stored with the session.