LINE

The LINE channel integrates Open Astra agents into your LINE Official Account. Agents respond to direct messages and group mentions via the LINE Messaging API webhook. LINE is dominant in Japan, Thailand, and Taiwan and is a first-class bot platform.

Setup

Go to the LINE Developers Console and create a new provider and channel (Messaging API)
Under Messaging API, copy the Channel access token — this is your LINE_CHANNEL_ACCESS_TOKEN
Under Basic settings, copy the Channel secret — this is your LINE_CHANNEL_SECRET
Set the webhook URL to your Astra gateway: https://your-domain/channels/line
Enable Use webhook in the LINE console
Add to your environment:

bash

LINE_CHANNEL_ACCESS_TOKEN=your-channel-access-token
LINE_CHANNEL_SECRET=your-channel-secret

Configuration in astra.yml

yaml

channels:
  line:
    enabled: true
    channelAccessToken: your-token   # Overrides LINE_CHANNEL_ACCESS_TOKEN
    channelSecret: your-secret       # Overrides LINE_CHANNEL_SECRET

Features

Direct messages — agents respond to 1:1 messages automatically
Group & room mentions — agents respond when mentioned in group chats
Flex Messages — structured responses use LINE Flex Message format for rich layouts
Quick replies — agent suggestions can be surfaced as LINE quick reply buttons
Signature verification — all incoming webhooks are verified using the channel secret

Environment Variables

Variable	Required	Description
`LINE_CHANNEL_ACCESS_TOKEN`	Yes	Long-lived channel access token from LINE Developers Console
`LINE_CHANNEL_SECRET`	Yes	Channel secret used for webhook signature verification

ℹLINE requires a publicly accessible HTTPS endpoint. In development, use a tunnel like ngrok: ngrok http 3000.