---
title: "Changes to Toggle a reaction on a message (add if not exists, remove if exists)"
method: POST
path: "/v1/chat/messages/{messageId}/reactions"
---

# Changes to Toggle a reaction on a message (add if not exists, remove if exists)

`POST /v1/chat/messages/{messageId}/reactions`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 1 of 87 revisions.

- **2026-10-04** `ec3c2c8d9c62`: 1 info

## Changes

- **2026-10-04** `ec3c2c8d9c62`: 1 info
  - added the required property `realtimeCursor` to the response with the `200` status

---

[Operation](https://skmtc.dev/legend/apis/legend-api/docs/v1/chat/messages/:messageId/reactions/post.md) - [API](https://skmtc.dev/legend/apis/legend-api.md) - [Page](https://skmtc.dev/legend/apis/legend-api/changes/v1/chat/messages/:messageId/reactions/post)