KMB Bus MCP Server

A Model Context Protocol (MCP) server that provides real-time access to Hong Kong's KMB (九龍巴士) and Long Win Bus (龍運巴士) route information and arrival times. This server enables Language Models to query Hong Kong bus service information to answer user questions about bus routes, stops, and estimated arrival times.

Features

Real-time bus arrival information (ETA)
Comprehensive bus route queries
Bus stop information and searches
Route-stop mapping
Caching system to optimize API calls
Bilingual support (English and Traditional Chinese)

Data Source

This project utilizes the official KMB/LWB Open Data API:

Base URL: https://data.etabus.gov.hk/v1/transport/kmb
KMB Open Data API Documentation

Prerequisites

Python 3.10 or higher
uv package manager

Installation

First, install uv if you haven't already:

curl -LsSf https://astral.sh/uv/install.sh | sh

Clone the repository:

git clone git@github.com:kennyckk/mcp_hkbus.git
cd mcp_hkbus

Use uv to handle the python package:

uv sync #using uv.lock

Usage

Edit the Config in your MCP Client (e.g. Claude Desktop):

{
  "mcpServers": {
    "bus_service": {
      "command": "path/to/uv.exe",
      "args": ["--directory", "path/to/kmb_bus", "run", "kmb_mcp.py"],
      "background": true
    }
  }
}

The server provides several tools that can be used by Language Models to query bus information:

get_route_list(): Get a list of all bus routes
get_stop_list(): Get a list of all bus stops
get_route_stops(): Get stops for a specific route
find_stops_by_name(): Search for bus stops by name
get_all_routes_at_stop(): Get all routes serving a specific stop
get_eta(): Get estimated arrival times

Testing

Run the test suite using pytest:

pytest test/kmb-mcp-tests.py

Dependencies

httpx: For async HTTP requests
fastmcp: For MCP server implementation
pytest: For testing (development only)

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

Acknowledgments

KMB/LWB for providing the open data API
The MCP protocol developers

Note

This service relies on the KMB/LWB Open Data API. Please be mindful of API rate limits and implement appropriate error handling in production environments.

Deploy Server

HTTP connection URL

security – no known vulnerabilities

license - permissive license

quality - confirmed to work

How are these scores calculated?

remote-capable server

The server can be hosted and run remotely because it primarily relies on remote services or has no dependency on the local environment.

Tools

A Model Context Protocol server that provides real-time access to Hong Kong's KMB and Long Win Bus route information and arrival times, enabling Language Models to answer user questions about bus routes, stops, and ETAs.

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