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LINE Bot MCP Server (with SSE Support)

Model Context Protocol (MCP) server implementation that integrates the LINE Messaging API to connect an AI Agent to the LINE Official Account.

🔄 Fork Information

• Original Repository: line/line-bot-mcp-server

• Fork Enhancement: Added SSE transport support for web-based integrations

• Docker Image: Available on Docker Hub as acquojp/line-bot-mcp-server-sse:latest

Transport Support

This MCP server supports multiple transport protocols:

• stdio (default): Standard input/output for local integrations

• SSE: Server-Sent Events over HTTP for web-based integrations

Tools

1. push_text_message

   • Push a simple text message to a user via LINE.

   • Inputs:

     • user_id (string?): The user ID to receive a message. Defaults to DESTINATION_USER_ID. Either user_id or DESTINATION_USER_ID must be set.

     • message.text (string): The plain text content to send to the user.

2. push_flex_message

   • Push a highly customizable flex message to a user via LINE.

   • Inputs:

     • user_id (string?): The user ID to receive a message. Defaults to DESTINATION_USER_ID. Either user_id or DESTINATION_USER_ID must be set.

     • message.altText (string): Alternative text shown when flex message cannot be displayed.

     • message.content (any): The content of the flex message. This is a JSON object that defines the layout and components of the message.

     • message.contents.type (enum): Type of the container. 'bubble' for single container, 'carousel' for multiple swipeable bubbles.

3. broadcast_text_message

   • Broadcast a simple text message via LINE to all users who have followed your LINE Official Account.

   • Inputs:

     • message.text (string): The plain text content to send to the users.

4. broadcast_flex_message

   • Broadcast a highly customizable flex message via LINE to all users who have added your LINE Official Account.

   • Inputs:

     • message.altText (string): Alternative text shown when flex message cannot be displayed.

     • message.content (any): The content of the flex message. This is a JSON object that defines the layout and components of the message.

     • message.contents.type (enum): Type of the container. 'bubble' for single container, 'carousel' for multiple swipeable bubbles.

5. get_profile

   • Get detailed profile information of a LINE user including display name, profile picture URL, status message and language.

   • Inputs:

     • user_id (string?): The ID of the user whose profile you want to retrieve. Defaults to DESTINATION_USER_ID.

6. get_message_quota

   • Get the message quota and consumption of the LINE Official Account. This shows the monthly message limit and current usage.

   • Inputs:

     • None

7. get_rich_menu_list

   • Get the list of rich menus associated with your LINE Official Account.

   • Inputs:

     • None

8. delete_rich_menu

   • Delete a rich menu from your LINE Official Account.

   • Inputs:

     • richMenuId (string): The ID of the rich menu to delete.

9. set_rich_menu_default

   • Set a rich menu as the default rich menu.

   • Inputs:

     • richMenuId (string): The ID of the rich menu to set as default.

10. cancel_rich_menu_default

    • Cancel the default rich menu.

    • Inputs:

      • None

Installation (Using npx)

requirements:

• Node.js v20 or later

Step 1: Create LINE Official Account

This MCP server utilizes a LINE Official Account. If you do not have one, please create it by following this instructions.

If you have a LINE Official Account, enable the Messaging API for your LINE Official Account by following this instructions.

Step 2: Configure AI Agent

Please add the following configuration for an AI Agent like Claude Desktop or Cline.

Set the environment variables or arguments as follows:

• CHANNEL_ACCESS_TOKEN: (required) Channel Access Token. You can confirm this by following this instructions.

• DESTINATION_USER_ID: (optional) The default user ID of the recipient. If the Tool's input does not include user_id, DESTINATION_USER_ID is required. You can confirm this by following this instructions.

• MCP_TRANSPORT: (optional) Transport protocol to use. Options: stdio (default), sse

• MCP_PORT: (optional) Port for SSE transport. Default: 3000

Using stdio transport (default)

Using SSE transport

For SSE transport, the server will start an HTTP server with the following endpoints:

• GET /sse - Establish SSE connection

• POST /messages - Send messages to the server

• GET /health - Health check endpoint

Installation (Using Docker)

Option A: Use Pre-built Docker Image (Recommended)

You can use the pre-built Docker image from Docker Hub without building locally:

Option B: Build from Source

Step 1: Create LINE Official Account

This MCP server utilizes a LINE Official Account. If you do not have one, please create it by following this instructions.

If you have a LINE Official Account, enable the Messaging API for your LINE Official Account by following this instructions.

Step 2: Build line-bot-mcp-server image

Clone this repository:

Build the Docker image:

Step 3: Configure AI Agent

Please add the following configuration for an AI Agent like Claude Desktop or Cline.

Set the environment variables or arguments as follows:

• mcpServers.args: (required) The path to line-bot-mcp-server.

• CHANNEL_ACCESS_TOKEN: (required) Channel Access Token. You can confirm this by following this instructions.

• DESTINATION_USER_ID: (optional) The default user ID of the recipient. If the Tool's input does not include user_id, DESTINATION_USER_ID is required. You can confirm this by following this instructions.

• MCP_TRANSPORT: (optional) Transport protocol to use. Options: stdio (default), sse

• MCP_PORT: (optional) Port for SSE transport. Default: 3000

Using SSE transport (default) - Docker Hub Image

Using stdio transport - Docker Hub Image

Versioning

This project respects semantic versioning

See http://semver.org/

Fork Information & Differences

This repository is a fork of the official LINE Bot MCP Server with the following enhancements:

✨ Added Features

• SSE (Server-Sent Events) Transport Support: Enables web-based integrations and HTTP connections

• Multi-Transport Architecture: Supports both stdio (original) and SSE transports

• Docker Hub Distribution: Pre-built Docker images available for easy deployment

• Production-Ready Configuration: Optimized for both development and production environments

🔄 Transport Comparison

🐳 Docker Hub

• Repository: acquojp/line-bot-mcp-server-sse

• Architecture: AMD64 (x86_64) - optimized for most cloud platforms

• Tags: latest, v1.0.0, amd64, arm64

Contributing

Please check CONTRIBUTING before making a contribution.

Contributing to This Fork

If you'd like to contribute to the SSE transport features or other enhancements in this fork, please:

1. Fork this repository

2. Create a feature branch

3. Make your changes

4. Submit a pull request

For contributions to the original LINE Bot MCP Server, please visit the official repository.