---
title: "Add Reaction"
method: POST
path: "/v1/messages/{message_id}/reactions"
tags: ["messages"]
---

# Add Reaction

`POST /v1/messages/{message_id}/reactions`

## Request

- Base URL: `https://api.opero.pro` (the document declares no server; this is the origin it was published from)
- URL: `https://api.opero.pro/v1/messages/{message_id}/reactions`
- Auth: none declared

Add or update a reaction to a message.
Supports both JWT and API key authentication.

## Path parameters

- `message_id` string, required

## Headers

- `X-User-Id` string, nullable

## Request body

- ReactionRequest
  - `reaction_type` string, required

## Response `200`

Successful Response

- unknown

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/opero/apis/opero-pro-api.md) - [All operations](https://skmtc.dev/opero/apis/opero-pro-api/llms.txt) - [OpenAPI document](https://skmtc.dev/opero/apis/opero-pro-api/revisions/e6ede41aeb9b?raw)