# Attach to a command over SSE

`GET /v1/sandboxes/{sandbox}/commands/{command}/stream`

**In this build:** Works on the simulator or a real VM.

**Scope:** `exec`

**CLI:** `harebox attach`

## Query

`cursor`

## Response: 200

Server-sent events. Each event's `id` is a resume cursor. Send `Upgrade: websocket` for WebSocket framing.

Errors follow [one format](../errors.html).