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

# 获取记忆追踪

> 返回记忆的完整变更历史

```
GET /openapi/memorylake/api/v2/projects/{id}/memories/{memoryId}/trace
```

返回记忆的完整变更历史 —— 它经历的所有版本，以及触发每次变更的原始对话消息。

<Note>
  **所需权限：** [`project:mem_read`](/features/team-collaboration/permission-reference#阅读事实内容) · `instance`
</Note>

### 路径参数

<ParamField path="id" type="string" required>
  项目 ID
</ParamField>

<ParamField path="memoryId" type="string" required>
  要追踪的记忆 ID
</ParamField>

<RequestExample>
  ```bash cURL theme={null}
  curl -X GET 'https://app.memorylake.cn/openapi/memorylake/api/v2/projects/proj-a1b2c3d4e5f6g7h8i9j0k1l2m3n4o5p6/memories/mem-123/trace' \
    -H 'Authorization: Bearer sk_xxxxxx'
  ```
</RequestExample>

### 响应

<ResponseField name="data" type="object">
  <Expandable title="记忆追踪">
    <ResponseField name="memory_id" type="string">记忆 ID</ResponseField>
    <ResponseField name="current_memory" type="string">当前记忆内容</ResponseField>

    <ResponseField name="trace" type="array">
      变更历史条目数组

      <Expandable title="追踪条目">
        <ResponseField name="history_id" type="string">历史条目 ID</ResponseField>
        <ResponseField name="event_type" type="string">事件类型（例如 `ADD`、`UPDATE`、`DELETE`）</ResponseField>
        <ResponseField name="new_memory" type="string">此次变更后的记忆内容</ResponseField>
        <ResponseField name="expired" type="boolean">此时记忆是否已过期</ResponseField>
        <ResponseField name="changed_at" type="string">变更时间戳</ResponseField>
        <ResponseField name="event_id" type="string">关联的事件 ID</ResponseField>
        <ResponseField name="source_messages" type="array">触发此次变更的原始对话消息</ResponseField>
      </Expandable>
    </ResponseField>
  </Expandable>
</ResponseField>

<ResponseExample>
  ```json Success (200) theme={null}
  {
    "success": true,
    "data": {
      "memory_id": "mem-123",
      "current_memory": "User prefers Hangzhou cuisine restaurants",
      "trace": [
        {
          "history_id": "19135a2d-2cc6-45db-bfc7-959d8fc117b2",
          "event_type": "ADD",
          "new_memory": "User prefers Hangzhou cuisine restaurants",
          "expired": false,
          "changed_at": "2024-01-15T10:00:00Z",
          "event_id": "batch-637d4f2ded6243feb926e5cf15f69b97",
          "source_messages": [
            {
              "role": "user",
              "content": "What restaurants do you recommend in Hangzhou?",
              "timestamp": 1705312800
            },
            {
              "role": "assistant",
              "content": "I recommend trying Grandma's Kitchen for Hangzhou cuisine.",
              "timestamp": 1705312800
            }
          ]
        }
      ]
    }
  }
  ```
</ResponseExample>