Poll
GET /v1/delta-neutral/tasks/:taskId for completion. A successful POST does not imply that a later worker operation will succeed.
One wallet owner can have only one task in an order-mutating state (ordering, neutralizing, trimming, resizing, or closing) at a time because its venue accounts are shared. You may create multiple pending tasks, but the worker opens them serially. A close request is durable even while another task is active: the worker promotes the oldest queued close as soon as that owner’s active operation releases the mutation slot, before opening another pending task. It cannot interrupt an operation already in progress. A resize for a different task while one is active still returns 409 owner_busy; retry with a new Idempotency-Key after the active operation finishes. Reuse the original key only when retrying an uncertain response to the same attempt.