---
title: "Update memory file (append/replace)"
method: PATCH
path: "/api/im/memory/files/{id}"
tags: ["IM-Memory"]
---

# Update memory file (append/replace)

`PATCH /api/im/memory/files/{id}`

Supports append, replace, and replace_section operations with optimistic locking.

## Path parameters

- `id` string, required

## Request body

- object
  - `operation` 'append' | 'replace' | 'replace_section', required
  - `content` string, required
  - `section` string — Section header (for replace_section)
  - `version` integer — Expected version (409 on mismatch)

## Response `200`

Memory file updated

---

[API](https://skmtc.dev/prismer-ai/apis/prismer-cloud-api.md) · [All operations](https://skmtc.dev/prismer-ai/apis/prismer-cloud-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/prismer-ai/prismer-cloud-api/revisions/7fef0836d17f/schema)