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hko-mcp

by imjac0b
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hko-mcp

A Streamable HTTP MCP server for Hong Kong Observatory open data, built with Bun.

Run

bun install
bun run start

The MCP endpoint is:

http://localhost:3000/mcp

Set a custom port with:

PORT=8787 bun run start

Related MCP server: Hefeng QWeather MCP Server

Tools

  • get_weather_information: HKO weather forecast, current report, warnings, warning details, and special weather tips.

  • get_earthquake_information: quick earthquake messages and locally felt earth tremor reports.

  • get_open_data: climate and weather open-data datasets such as tides, sun/moon events, lightning counts, visibility, daily temperatures, and weather/radiation reports.

  • get_lunar_date: Gregorian to lunar date conversion.

  • get_hourly_rainfall: past-hour rainfall from automatic weather stations.

  • list_supported_datasets: dataset codes, languages, and station groups.

Example Requests

{
  "dataType": "rhrread",
  "lang": "en"
}
{
  "dataType": "LTMV",
  "rformat": "json",
  "lang": "en"
}
{
  "date": "2026-06-20"
}

The implementation follows HKO Open Data API documentation version 1.12, dated November 2024.

This server cannot be deployed

One endpoint for every MCP toolRayrun runs every MCP server behind one URL and holds the credentials. Each call is decided per client, tool, and argument, then recorded.ray.runAd

Maintenance

ActivityInactive
ResponsivenessNo issues

Resources

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