# `GET /modelconversation/{id}/stream`

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

Stream conversation events (SSE)

Opens a Server-Sent Events stream for the specified conversation.
Streams `message` events (persisted user/assistant messages), live `delta`
text chunks of the model answer, and `state` events (`thinking`, `working`,
`done`). The SSE states are not stored; the database only knows `idle`/`busy`.
`done` carries `usage` (`input`, `cached`, `output`, `cost`) on success or
`error` (string) if the run failed.


## Path parameters

| Param | Required | Type | Description |
|-------|----------|------|-------------|
| `id` | yes | integer | Conversation ID |

## Response `200`

SSE stream (`text/event-stream`). Emits `state`, `delta`, and `message` events.


## Errors

| Status | Description |
|--------|-------------|
| 400 | Invalid ID or no company selected — `{"error":"…"}` |
| 401 | Unauthorized — `{"error":"…"}` |
| 403 | Not authorized — `{"error":"…"}` |
| 404 | Conversation not found — `{"error":"…"}` |

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