> ## 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.

# Get uncertainty estimation

> **Required scope:** read

**Required scope:** `read`

### Response

`UncertaintyResponse`

<ResponseField name="aleatoric" type="number (double)" required>
  Aleatoric uncertainty (data uncertainty)
</ResponseField>

<ResponseField name="calibration_score" type="number (double)" required>
  Calibration score
</ResponseField>

<ResponseField name="enabled" type="boolean" required>
  Whether metacognition is enabled
</ResponseField>

<ResponseField name="epistemic" type="number (double)" required>
  Epistemic uncertainty (model uncertainty)
</ResponseField>

<ResponseField name="total" type="number (double)" required>
  Total uncertainty
</ResponseField>

### Status codes

| Code  | Meaning                                            |
| ----- | -------------------------------------------------- |
| `200` | Uncertainty estimate                               |
| `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/nsr/uncertainty' \
    --header 'X-API-Key: YOUR_API_KEY'
  ```
</RequestExample>

<ResponseExample>
  ```json 200 theme={null}
  {
    "aleatoric": 0.08,
    "calibration_score": 0.87,
    "enabled": true,
    "epistemic": 0.15,
    "total": 0.23
  }
  ```
</ResponseExample>