Start an orchestration run. A run does real work and takes minutes to hours; the call returns once the run is queued, not when it finishes. Do not re-issue it while waiting, that starts a second run. Follow the run with bernstein_run_status, passing either the returned task_id or the returned run_id, after waiting the returned poll_after_ms. Pass parent_task_id to create the run as a subtask of an existing task. The queued orchestration writes project state and starts agent work. Host effects: writes files; spawns agent processes; makes network requests.

Liveness, task counts, and cost in one read. Pass status to include the matching tasks; pass detail=true for full per-role and per-task rows. Retrieves data from the Bernstein server without changing it. Host effects: makes network requests.

Claim the next eligible task for an agent. This changes task assignment state on the Bernstein server. Host effects: makes network requests.

Post a progress message to a task mailbox on the Bernstein server. Host effects: makes network requests.

Post a versioned artifact to a task on the Bernstein server. Host effects: makes network requests.

Cancel one task and its subtask tree; the orchestrator keeps running. Cancellable statuses: open, claimed, in_progress, blocked, waiting_for_subtasks, planned. An already-terminal task is reported, not treated as an error. This changes task state on the Bernstein server. Host effects: makes network requests.

Shut down the ENTIRE Bernstein orchestrator for this project, including every run and worker; use bernstein_cancel to stop one task while the orchestrator keeps running. Writes the local SHUTDOWN signal file. Host effects: writes files.

Sign off a finished result only when the task is in pending_approval; every other status is refused. This completes the task on the Bernstein server. Host effects: makes network requests.

Report a task result only from a worker-held state: open, claimed, or in_progress; every other status is refused. This completes the task on the Bernstein server. Host effects: makes network requests.

Poll a verifiable handle for a run started with bernstein_run. Accepts either identifier that call returned: the task_id or the run_id. Reads the local run journal and audit evidence without changing them. Host effects: reads files.

Read a task capsule together with its local journal and audit evidence. With verify=true, verification may create the install audit key if it is absent. Host effects: reads files; writes files.

List available skills when name is omitted, or load a named skill body, reference, or script file contents. Returns file contents as text; executes nothing. Host effects: reads files.