Connect LINE (Messaging API mode)

1. Create a Messaging API channel

In the LINE Developers console, open (or create) a provider, then create a Messaging API channel and link it to the Official Account you want the bot to run on.

If the Official Account already exists, use “Enable Messaging API” from the LINE Official Account Manager instead — it links the account you already have friends on, which is the one you want.

2. Copy three values

• Channel ID — on the Basic settings tab.
• Channel secret — on the same tab.
• Channel access token (long-lived) — on the Messaging API tab; press Issue if there is none.

Paste them into step 4 of the wizard. They are sent once over HTTPS and stored encrypted; the status view afterwards shows masked values only, and no page on this site ever receives them back.

3. Paste the webhook URL back

The wizard shows a webhook URL unique to your workspace. Copy it into Messaging API → Webhook URL, press Verify in LINE, then press Verify in the wizard. We poll until LINE confirms it.

4. Three settings that must be right

• Use webhook: ON — otherwise nothing reaches the bot.
• Auto-response messages: OFF — otherwise LINE’s canned reply talks over the bot.
• Greeting message: leave it to the bot, so a new friend gets the bot’s greeting and its menu rather than two greetings.

These live in the LINE Official Account Manager, under Settings → Response settings. The wizard shows them as a checklist you tick off.

If verification fails

• The webhook URL has a typo, or was pasted without the workspace part.
• The channel access token was regenerated after you pasted it — issue a new one and paste it again.
• “Use webhook” is still off.

The status endpoint reports what it actually saw, so the wizard tells you which of these it is rather than saying “failed”.