Opens a persistent SSE connection that emits events as the task progresses.
The stream closes automatically when the task reaches a terminal state or after
~90 seconds (timeout). Heartbeat comments are sent every ~15 seconds to keep
the connection alive through proxies.
Event types:
- `status` — emitted when status changes (pending → running → complete/failed)
- `result` — emitted on `complete` with the full result payload
- `error` — emitted on `failed`, `cancelled`, or `expired` with error info
- SSE comment (`: heartbeat`) — keepalive, no data
Use this tool when:
- You want real-time progress without polling.
- You are in an environment that supports SSE (EventSource API).
Do NOT use this tool when:
- You want a simple one-shot status check — use `get_task` instead.
- Your HTTP client doesn't support streaming responses.
Inputs:
- `task_id` (path, required): 26-char ULID.
Returns:
- SSE stream (`text/event-stream`). Each event is `event: <type>\\ndata: <json>\\n\\n`.
Cost:
- Free. Counts as one request against rate limits when the stream opens.
Latency:
- First event: <200ms. Stream duration: up to 90s.
Connector
