> ## Documentation Index
> Fetch the complete documentation index at: https://docs.profclaw.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# LINE

> Connect profClaw to LINE Messaging API. Popular in Japan, Taiwan, and Southeast Asia.

LINE is the dominant messaging platform across Japan, Taiwan, Thailand, and Indonesia. profClaw integrates via the LINE Messaging API for bot interactions.

## Capabilities

| Feature             | Supported |
| ------------------- | --------- |
| 1:1 messages        | Yes       |
| Group messages      | Yes       |
| Quick reply buttons | Yes       |
| Flex messages       | Yes       |
| File/image send     | Yes       |
| Webhook             | Yes       |
| Channel access      | Yes       |

## Setup

<Steps>
  <Step title="Create a LINE Developers account">
    Sign up at [developers.line.biz](https://developers.line.biz).
  </Step>

  <Step title="Create a Messaging API channel">
    Create a new provider and channel. Choose **Messaging API** as the channel type.
  </Step>

  <Step title="Get credentials">
    Under **Messaging API** tab:

    * **Channel access token** (long-lived)
    * **Channel secret**
  </Step>

  <Step title="Set webhook URL">
    Under **Messaging API > Webhook settings**, set:
    `https://your-domain.com/webhooks/line`

    Enable **Use webhook**.
  </Step>

  <Step title="Configure profClaw">
    ```bash theme={null}
    LINE_CHANNEL_ACCESS_TOKEN=your-channel-access-token
    LINE_CHANNEL_SECRET=your-channel-secret
    ```
  </Step>
</Steps>

## Environment Variables

<ParamField path="LINE_CHANNEL_ACCESS_TOKEN" type="string" required>
  LINE Messaging API channel access token (long-lived).
</ParamField>

<ParamField path="LINE_CHANNEL_SECRET" type="string" required>
  Channel secret for webhook signature verification.
</ParamField>

<ParamField path="LINE_WEBHOOK_URL" type="string">
  Webhook URL. Required to be set in LINE Developer Console.
</ParamField>

## Configuration Example

<Tabs>
  <Tab title=".env">
    ```bash theme={null}
    LINE_CHANNEL_ACCESS_TOKEN=xxxxxxxxxxxxxxxxxxx
    LINE_CHANNEL_SECRET=abcdef1234567890
    ```
  </Tab>

  <Tab title="settings.yml">
    ```yaml theme={null}
    chat:
      line:
        channel_access_token: "${LINE_CHANNEL_ACCESS_TOKEN}"
        channel_secret: "${LINE_CHANNEL_SECRET}"
    ```
  </Tab>
</Tabs>

## Flex Messages

profClaw can send LINE Flex Messages for rich layouts:

```json theme={null}
{
  "type": "flex",
  "altText": "Task completed",
  "contents": {
    "type": "bubble",
    "body": {
      "type": "box",
      "layout": "vertical",
      "contents": [
        { "type": "text", "text": "Result", "weight": "bold" }
      ]
    }
  }
}
```

## Notes

* Status: Beta
* LINE requires a public HTTPS webhook URL.
* LINE's free tier allows 500 messages/month. Paid plans remove the limit.
* The webhook URL must be verified in the LINE Developer Console.
* LINE's Messaging API uses POST webhooks - profClaw verifies the `X-Line-Signature` header.

## Related

* [Chat Providers Overview](/chat-providers/overview) - Compare all 27 supported channels
* [Zalo](/chat-providers/zalo) - Leading messaging platform in Vietnam
* [Viber](/chat-providers/viber) - Messaging app popular in Southeast Asia and Eastern Europe
* [profclaw channels](/cli/channels) - Enable and test the LINE connection from the CLI