LINE Chat Triage with Claude Haiku 4.5 + Slack Follow-Up (n8n)

Instant LINE Auto-Reply Triage with Claude Haiku 4.5 + Slack Follow-Up (n8n)

This n8n workflow listens to customer messages on LINE, automatically answers common shop questions using Anthropic Claude Haiku 4.5, and routes anything that needs human help to Slack—then syncs staff replies back to the customer and tracks everything in n8n Data Tables.

What this workflow does

• Receives LINE webhook events, verifies the request signature, and ignores invalid or redelivered events.
• Extracts key details (user ID, reply token, and message content) and processes only text and image messages.
• Handles image inquiries by downloading the image from LINE and using Claude to describe the furniture, so it can be treated like a stock inquiry.
• Classifies each inquiry with Claude as: shop info, stock, visit availability, or needs staff.
• Consults n8n Data Tables to draft an answer using your allowed data (shop information, products, or visit slots).
• If it can answer, it sends the AI response back via LINE Messaging API and logs it for staff visibility.
• If it can’t, it acknowledges the customer on LINE and posts the inquiry to Slack, creating/updating a per-customer Slack thread tracked in Data Tables.
• When staff reply in Slack, the workflow forwards the message to the customer via LINE, reacts on success, updates thread status, and reports failures back into the Slack thread.

Use cases

• Auto-answer frequently asked questions like pricing, opening info, or visit slot availability from your shop data.
• Turn customer photos into structured “stock inquiry” requests using Claude description.
• Escalate edge cases (missing details, special requests, complex availability) to staff in Slack with full conversation context.

Technical details

• n8n nodes/tools used include: if, set, no op, slack, crypto, filter.
• Integrations: LINE webhooks + LINE Messaging API; Anthropic Claude Haiku 4.5; Slack; n8n Data Tables for reply logic and thread tracking.