Does LINE need a public URL?

Yes. LINE delivers messages by webhook, so FastClaw must be reachable over public HTTPS.

Is the channel secret optional?

No. It is required to connect — without it anyone who knows the bot's ID could post forged messages.

Integration · Channels

Connect a FastClaw agent to the LINE Messaging API — 1:1 chats, group @-mentions, media in and out, and signed webhooks.

Every webhook request is verified with HMAC-SHA256 using your channel secret; unverifiable requests are rejected.

Replies in groups when @-mentioned, accepts images, video, audio and files, and sends images and file links back.

Shows LINE's loading animation in 1:1 chats while the agent works, and sends up to five messages per reply.

Serve customers or community members in markets where LINE is the default messenger — see FastClaw for communities.
Run the same agent on WhatsApp and Telegram.

In the LINE Developers Console, create a Messaging API channel.
Copy the long-lived Channel access token and the Channel secret (from Basic settings).
In FastClaw, open the agent → Channels → LINE, paste both and connect.
Copy the webhook URL FastClaw shows, paste it into Messaging API → Webhook URL, click Verify and enable Use webhook.
Add the bot as a friend by its basic ID (or invite it to a group), then pair with /pair <code>.

LINE is one of FastClaw's IM channels.

Turn any FastClaw agent into a Telegram bot in minutes: paste a BotFather token, pair your account, and chat in DMs or groups.

Connect a FastClaw agent to Discord: answer DMs and @-mentions in servers, with per-channel sessions, memory and sandboxed tools.

Connect a FastClaw agent to Slack via Socket Mode — answer DMs and @-mentions in channels, no public URL required.

Create a Feishu bot by scanning a QR code and connect it to a FastClaw agent — long-connection mode, no public URL needed.

Start free in FastClaw Cloud, or self-host the single binary in a minute.