Click on "Deploy Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type @ followed by the MCP server name and your instructions, e.g., "@hko-mcp Check today's weather forecast for Hong Kong."
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
A Streamable HTTP MCP server for Hong Kong Observatory open data, built with Bun.
bun install
bun run startThe MCP endpoint is:
http://localhost:3000/mcpSet a custom port with:
PORT=8787 bun run startRelated MCP server: mcp-hko
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.
{
"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
Search NOAA climate stations and datasets, fetch historical weather observations.
Weather, geocoding, FX rates, holidays, time zones, countries, earthquakes, sun and moon.
Read-only Bazi, True Solar Time, and Chinese almanac tools in English and Traditional Chinese.
Search NOAA CDO stations and datasets, fetch historical weather observations.
