> ## Documentation Index
> Fetch the complete documentation index at: https://docs.stateset.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Handler for GET /api/v1/reason/stream?query=...&strategy=...

> Uses a per-request channel so each client receives only its own reasoning trace. **Required scope:** read

Uses a per-request channel so each client receives only its own reasoning trace.

**Required scope:** `read`

### Query parameters

<ParamField query="query" type="string" required>
  Reasoning query
</ParamField>

<ParamField query="strategy" type="string">
  Optional strategy override
</ParamField>

<ParamField query="as_of_timestamp" type="string">
  Optional RFC3339 historical snapshot timestamp
</ParamField>

### Response

No response body. SSE stream started.

### Status codes

| Code  | Meaning                                            |
| ----- | -------------------------------------------------- |
| `200` | SSE stream started                                 |
| `400` | Invalid query or timestamp                         |
| `401` | Unauthorized — missing or invalid credentials      |
| `403` | Forbidden — the key/token lacks the required scope |
| `429` | Rate limited — see Retry-After / X-RateLimit-Reset |

<RequestExample>
  ```bash cURL theme={null}
  curl --request GET \
    --url 'https://api.nsr.stateset.com/api/v1/reason/stream' \
    --header 'X-API-Key: YOUR_API_KEY'
  ```
</RequestExample>