Japan Weather & Alerts MCP Server

by fujimura-ui Your server? Claim it

not responding

Japan Weather & Alerts is listed as active in the registry but did not answer our last check.

Japan weather forecasts and disaster alerts from JMA: forecasts, warnings, and earthquake info.

Uptime history 91 days of history · worst day 0%

91 days agonow

0.0%

Uptime 24h

0 of 184 checks

—

Tools

hidden behind auth

83 ms

Response time

average over 24h

open, no key

Access

streamable-http

Japan Weather & Alerts does not always answer

Over the last week it answered 0.0% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 7 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add japan-weather-alerts-mcp --transport http https://tenki-mcp.plus-synergy.workers.dev/mcp

Settings → Connectors → Add custom connector, then paste this address

https://tenki-mcp.plus-synergy.workers.dev/mcp

~/.codex/config.toml

[mcp_servers.japan-weather-alerts-mcp]
url = "https://tenki-mcp.plus-synergy.workers.dev/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "japan-weather-alerts-mcp": {
      "url": "https://tenki-mcp.plus-synergy.workers.dev/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "japan-weather-alerts-mcp": {
      "type": "http",
      "url": "https://tenki-mcp.plus-synergy.workers.dev/mcp"
    }
  }
}

This server publishes 1 more address. The block above uses the one we reach during checks; the full list is under Endpoints below, and the author may intend a particular one for your client.

Endpoints

URL	Transport	State	Latency	Checked
https://tenki-mcp.plus-synergy.workers.dev/mcp	streamable-http	answering	83 ms	7 min ago
https://tenki-mcp.plus-synergy.workers.dev/sse	sse	answering	81 ms	7 min ago

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Japan Weather & Alerts — questions

Answers built from our own checks of this server.

Is Japan Weather & Alerts working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 0 of 184 checks got a reply (0.0%), average response time 83 ms. The bar chart above shows every period we have measured.

The registry lists Japan Weather & Alerts as active — why does it not respond?

The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.

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 in the form 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. This is what we observed, not what the docs claim.