---
title: "GET /v1/memories/{memory_id}/history/"
method: GET
path: "/v1/memories/{memory_id}/history/"
tags: ["memories"]
---

# GET /v1/memories/{memory_id}/history/

`GET /v1/memories/{memory_id}/history/`

Retrieve the history of a memory.

## Path parameters

- `memory_id` string, uuid, required

## Response `200`

Successfully retrieved the memory history.

- object[]
  - `id` string, uuid, required — Unique identifier for the history entry.
  - `memory_id` string, uuid, required — Unique identifier of the associated memory.
  - `input` object[], required — The conversation input that led to this memory change
    - `role` 'user' | 'assistant', required — The role of the speaker in the conversation
    - `content` string, required — The content of the message
  - `old_memory` string, nullable — The previous state of the memory, if applicable
  - `new_memory` string, required — The new or updated state of the memory
  - `user_id` string, required — The identifier of the user associated with this memory
  - `agent_id` string, nullable — The identifier of the agent associated with this memory, if any.
  - `app_id` string, nullable — The identifier of the app associated with this memory, if any.
  - `session_id` string, nullable — The run identifier associated with this memory, returned as `session_id`.
  - `categories` string[], nullable — Categories associated with the memory at this point in its history
  - `event` 'ADD' | 'UPDATE' | 'DELETE', required — The type of event that occurred
  - `previous_embedding_qwen` string, nullable — Previous internal embedding representation (Qwen model), if applicable
  - `embedding_qwen` string, nullable — Internal embedding representation (Qwen model), if available
  - `metadata` object, nullable — Additional metadata associated with the memory change
  - `created_at` string, date-time, required — The timestamp when this history entry was created.
  - `updated_at` string, date-time, required — The timestamp when this history entry was last updated.

## Changes

- **2026-08-04** `d8043b07769d` — 6 info
  - added the optional property `items/agent_id` to the response with the `200` status
  - added the optional property `items/app_id` to the response with the `200` status
  - added the optional property `items/categories` to the response with the `200` status
  - added the optional property `items/embedding_qwen` to the response with the `200` status
  - …2 more

[Change history](https://skmtc.dev/mem0/apis/mem0-api-docs/changes/v1/memories/:memory_id/history/get.md)

---

[API](https://skmtc.dev/mem0/apis/mem0-api-docs.md) · [All operations](https://skmtc.dev/mem0/apis/mem0-api-docs/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/mem0/mem0-api-docs/revisions/062693546f67/schema)