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LINE Message API Demo

This workflow implements automatic replies and proactive push notifications through the LINE Messaging API. It can receive user messages and respond in real-time, while also supporting manual notifications to specific users. By utilizing Webhooks and conditional logic, it effectively filters message types, processing only valid message events, which enhances service response speed and user experience. It is suitable for scenarios such as customer service automatic replies, event notifications, and testing and development, helping businesses and developers efficiently build messaging interaction systems.

Workflow Diagram
LINE Message API Demo Workflow diagram

Workflow Name

LINE Message API Demo

Key Features and Highlights

This workflow implements automated reply and proactive push messaging based on the LINE Messaging API. It receives messages sent by users and uses the replyToken to instantly reply with the original message content. Additionally, it supports manual triggering to push messages to specified users (via their LINE UID), facilitating testing and proactive notifications.
A key highlight is the integration of Webhook and conditional logic to precisely filter message types (processing only message events), ensuring accurate and efficient responses.

Core Problem Solved

This workflow addresses how to leverage the official LINE Messaging API to achieve automated message interaction and push notifications, eliminating the need for manual replies and enhancing user response speed and service experience.

Use Cases

  • Customer Service Auto-Reply: Quickly respond to customer inquiries.
  • Event Notification Push: Proactively send event updates, reminders, and other information to users.
  • Testing and Development Environment: Use manual trigger push functionality to help developers verify message sending workflows.
  • Enterprise Internal Communication Automation: Automate message handling using enterprise LINE accounts.

Main Process Steps

  1. Webhook from LINE Message: Receive message events from LINE.
  2. If Condition Node: Check if the event type is “message” to ensure only user messages are processed.
  3. LINE: Reply with Token: Use the received replyToken to reply with the same text message sent by the user.
  4. Manual Trigger (When clicking ‘Test workflow’): After triggering, edit the LINE UID.
  5. LINE: Push Message: Proactively push a preset text message “推播測試” (Push Test) to the specified LINE UID.

Involved Systems or Services

  • LINE Messaging API (message reply and push)
  • n8n Webhook (receiving message events)
  • n8n HTTP Request Node (calling LINE API)

Target Audience and Value

  • Enterprises and developers looking to quickly build automated message reply systems based on the LINE platform.
  • Customer service teams aiming to implement efficient automated message responses to improve customer satisfaction.
  • Product testers who benefit from manual trigger functionality to easily verify message sending logic.
  • Any user group needing to use LINE as a communication channel for automated message handling.

This workflow features a clear structure and is easy to extend. It can be flexibly adjusted to meet business needs for reply content and push logic, making it an ideal starter template for LINE-related automation services.