# How to React to a Message

Acknowledge a message with an emoticon reaction.

## Step 1 — Get available reactions

```
GET /reactions
```

Response contains `id`, `name`, `image_url`, and `code` for each available reaction.

## Step 2 — Post the reaction

```
POST /reactions/{reaction_id}/{message_id}
```

Use the `reaction_id` from the list above and the `message_id` from the webhook payload or send response.