> ## 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 history of revisions for a belief

> **Required scope:** read

**Required scope:** `read`

### Path parameters

<ParamField path="proposition" type="string" required>
  The proposition
</ParamField>

### Response

`BeliefHistoryResponse`

<ResponseField name="events" type="RevisionEventResponse[]" required>
  <Expandable title="RevisionEventResponse">
    <ResponseField name="new_confidence" type="number (float)" required />

    <ResponseField name="old_confidence" type="number (float)" required />

    <ResponseField name="revision_type" type="string" required />

    <ResponseField name="source" type="string" required />

    <ResponseField name="timestamp" type="string" required />
  </Expandable>
</ResponseField>

<ResponseField name="proposition" type="string" required />

### Status codes

| Code  | Meaning                                            |
| ----- | -------------------------------------------------- |
| `200` | Belief history                                     |
| `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/beliefs/{proposition}/history' \
    --header 'X-API-Key: YOUR_API_KEY'
  ```
</RequestExample>

<ResponseExample>
  ```json 200 theme={null}
  {
    "events": [
      {
        "new_confidence": 7.5,
        "old_confidence": 7.5,
        "revision_type": "string",
        "source": "string",
        "timestamp": "2026-08-31T14:22:05Z"
      }
    ],
    "proposition": "string"
  }
  ```
</ResponseExample>