## Add or remove a reaction to a message

**post** `/v3/messages/{messageId}/reactions`

Add or remove emoji reactions to messages. Reactions let users express
their response to a message without sending a new message.

**Supported Reactions:**

- love ❤️
- like 👍
- dislike 👎
- laugh 😂
- emphasize ‼️
- question ❓
- custom - any emoji (use `custom_emoji` field to specify)

### Path Parameters

- `messageId: string`

### Body Parameters

- `operation: "add" or "remove"`

  Whether to add or remove the reaction

  - `"add"`

  - `"remove"`

- `type: ReactionType`

  Type of reaction. Standard iMessage tapbacks are love, like, dislike, laugh, emphasize, question.
  Custom emoji reactions have type "custom" with the actual emoji in the custom_emoji field.
  Sticker reactions have type "sticker" with sticker attachment details in the sticker field.

  - `"love"`

  - `"like"`

  - `"dislike"`

  - `"laugh"`

  - `"emphasize"`

  - `"question"`

  - `"custom"`

  - `"sticker"`

- `custom_emoji: optional string`

  Custom emoji string. Required when type is "custom".

- `part_index: optional number`

  Optional index of the message part to react to.
  If not provided, reacts to the entire message (part 0).

### Returns

- `message: optional string`

- `status: optional string`

- `trace_id: optional string`

### Example

```http
curl https://api.linqapp.com/api/partner/v3/messages/$MESSAGE_ID/reactions \
    -H 'Content-Type: application/json' \
    -H "Authorization: Bearer $LINQ_API_V3_API_KEY" \
    -d '{
          "operation": "add",
          "type": "love",
          "part_index": 1
        }'
```

#### Response

```json
{
  "message": "Reaction processed",
  "status": "accepted",
  "trace_id": "trace_id"
}
```