---
title: "Mark reactions on a chat message as seen"
method: POST
path: "/v1/chat/rooms/{roomId}/messages/{messageId}/reactions/seen"
tags: ["chat"]
---

# Mark reactions on a chat message as seen

`POST /v1/chat/rooms/{roomId}/messages/{messageId}/reactions/seen`

## Request

- Base URL: `https://app.legend.trade/api/rest`
- URL: `https://app.legend.trade/api/rest/v1/chat/rooms/{roomId}/messages/{messageId}/reactions/seen`
- Auth: HTTP bearer
- TypeScript: <https://skmtc.dev/legend/apis/legend-api/docs/v1/chat/rooms/:roomId/messages/:messageId/reactions/seen/post.ts> (a function with typed inputs; its response is checked against the schema)

## Path parameters

- `roomId` string, uuid, required
- `messageId` string, uuid, required

## Response `200`

Successful response

- AcknowledgeChatReactionsOutput
  - `success` boolean, required

## Other responses

- `404`: Not found

## Changes

> 118 revisions in range; 1 not diffed.

- **2026-11-04** `cea96c83cd34`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/legend/apis/legend-api/changes/v1/chat/rooms/:roomId/messages/:messageId/reactions/seen/post.md)

---

[API](https://skmtc.dev/legend/apis/legend-api.md) - [All operations](https://skmtc.dev/legend/apis/legend-api/llms.txt) - [OpenAPI document](https://skmtc.dev/legend/apis/legend-api/revisions/34877326e9b2?raw)