Japan Weather & Alerts MCP Server
io.github.easakura/japan-weather-alerts-mcp
answering
Japan Weather & Alerts is answering right now. Last checked 8 min ago. It exposes 3 tools.
Japan weather forecasts and disaster alerts from JMA: forecasts, warnings, and earthquake info.
Uptime history
40 hours of history · worst hour 43%
40 hours agonow
50.0%
Uptime 24h
91 of 182 checks
3
Tools
read from the server
915 ms
Response time
average over 24h
open, no key
Access
streamable-http
Connect this server
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 8 min ago.
run in your terminal
claude mcp add japan-weather-alerts-mcp --transport http https://tenki-mcp.easakura.workers.dev/mcp~/Library/Application Support/Claude/claude_desktop_config.json
{
"mcpServers": {
"japan-weather-alerts-mcp": {
"url": "https://tenki-mcp.easakura.workers.dev/mcp"
}
}
}~/.codex/config.toml
[mcp_servers.japan-weather-alerts-mcp]
url = "https://tenki-mcp.easakura.workers.dev/mcp".cursor/mcp.json
{
"mcpServers": {
"japan-weather-alerts-mcp": {
"url": "https://tenki-mcp.easakura.workers.dev/mcp"
}
}
}.vscode/mcp.json
{
"mcpServers": {
"japan-weather-alerts-mcp": {
"url": "https://tenki-mcp.easakura.workers.dev/mcp"
}
}
}Available tools 3
Read directly from the server with tools/list, grouped by what they act on.
If a tool disappears, we record the date.
weather
get_weather_forecast
気象庁公式データから指定地域の天気予報（今日・明日・明後日＋週間）を取得する。地域は都道府県名で指定（例: 東京都、大阪府、北海道は「石狩・空知・後志地方」等の予報区名）。
get_weather_warnings
指定地域に現在発表されている気象警報・注意報（大雨警報、洪水警報、雷注意報など）を気象庁公式データから取得する。防災判断・イベント開催判断・物流計画などに使う。
recent
get_recent_earthquakes
日本で最近観測された地震の一覧（発生時刻・震源地・マグニチュード・最大震度）を気象庁公式データから取得する。
Endpoints
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://tenki-mcp.easakura.workers.dev/mcp | streamable-http | answering | 1102 ms | 8 min ago |
| https://tenki-mcp.easakura.workers.dev/sse | sse | answering | 221 ms | 9 min ago |
Japan Weather & Alerts — questions
Answers built from our own checks of this server.
What can Japan Weather & Alerts do?
It exposes 3 tools, read directly from the server on our last check. Among them: get_recent_earthquakes, get_weather_forecast, get_weather_warnings. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README.
How MCP servers expose tools in the first place →
Is Japan Weather & Alerts working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 182 checks got a reply (50.0%), average response time 915 ms. The bar chart above shows every period we have measured.
How do I connect Japan Weather & Alerts?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Japan Weather & Alerts need an API key?
No. Japan Weather & Alerts completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 3 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Japan Weather & Alerts?
It answers our handshake in 915 ms on average, which is faster than 6% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.