# `GET /agent/events`

Protected. Requires a valid session cookie (`credentials: 'include'`).

Printer agent SSE stream

Authorized Server-Sent Events stream for connected printer agents.
Maintains a persistent connection with regular heartbeats (`: heartbeat\n\n`) and updates `lastseen_at` and `agentversion`.


## Query parameters

| Param | Required | Type | Description |
|-------|----------|------|-------------|
| `token` | no | string | Agent auth token if not provided via Authorization header |
| `agentversion` | no | string | Current agent version |

## Response `200`

Event stream established

## Errors

| Status | Description |
|--------|-------------|
| 401 | Unauthorized |

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