How to Use OpenClaw with LINE

OpenClaw's LINE integration uses the LINE Messaging API. The plugin runs as a webhook receiver on the gateway and authenticates requests with your channel access token and channel secret. The docs list support for direct messages, group chats, media, locations, Flex messages, template messages, and quick replies. Reactions and threads are not supported, so design LINE workflows around the message types the channel actually exposes.

Create the LINE channel

Start in the LINE Developers Console. Create or choose a provider, add a Messaging API channel, copy the channel access token and channel secret, enable webhooks, and set the webhook URL to the gateway endpoint. The default documented path is https://gateway-host/line/webhook. If you configure a custom path under channels.line.webhookPath or an account-specific webhook path, update the LINE console URL to match exactly.

Configure credentials safely

Minimal config enables channels.line with channelAccessToken, channelSecret, and dmPolicy. Environment variables LINE_CHANNEL_ACCESS_TOKEN and LINE_CHANNEL_SECRET work for the default account. The docs also support token and secret files, and reject symlinks for those file paths. For multiple accounts, configure named account blocks with their own token, secret, and webhook path. That keeps marketing, support, or regional LINE bots separated.

Respect webhook security

LINE signature verification depends on the raw request body. The docs note that OpenClaw applies strict pre-auth body limits and timeout before verification, and processes webhook events from the verified raw request bytes. Upstream middleware-transformed bodies are ignored for signature-integrity safety. In practical terms, do not put random body parsers or proxies in front of this path unless you know they preserve the raw body LINE signs.

Set access control

Direct messages default to pairing. Unknown senders receive a pairing code and their messages are ignored until approved. That is the right first setting for a personal or business assistant. Group chats need the same care as other channel integrations: decide whether the bot should answer everyone, only allowlisted groups, or only direct mentions. LINE can carry media and locations, so also decide whether those inputs should trigger media understanding or location workflows.

Operator checklist

Verify webhook verification, send one DM, approve one pairing code, test one group message, and test a media or location event if your workflow needs it. Record channel id, webhook path, credential source, DM policy, group policy, and account name. The OpenClaw Playbook helps keep LINE setup boring: one public webhook, one credential source, one access policy, and no assumptions about unsupported reactions or threads.

Design for mobile-first replies

LINE is usually read on mobile, so OpenClaw replies should be short, clear, and compatible with the channel's supported message types. Flex messages, templates, and quick replies can be useful, but do not depend on reactions or threads because the docs say they are unsupported. If the bot handles customer messages, write fallback copy for unsupported events and decide whether media and location inputs should be acknowledged before analysis. Mobile chat users notice latency and verbosity quickly. Keep the first LINE workflows narrow: answer, collect a detail, or hand off. Then add richer message formats once the basics are trusted.

Final verification

Before calling How to Use OpenClaw with LINE finished, perform one direct test, one failure test, and one rollback check. The direct test proves the happy path works. The failure test proves the documented guardrail is real, not just assumed. The rollback check tells the next operator how to undo the change without improvising. Save those notes beside the channel, node, or gateway config you changed. OpenClaw gets powerful when agents can act, but it stays trustworthy when every new surface has a small, repeatable verification habit attached to it.