Japan Agent API MCP Server

by mk-career-planning Your server? Claim it

answering

Japan Agent API is answering right now. Last checked 5 min ago. It exposes 8 tools.

Japan JMA warnings, typhoons, volcano levels and municipality code history in English; x402 checks

Uptime history 14 days of history

14 days agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

1282 ms

Response time

average over 24h

open, no key

Access

streamable-http

Nothing serious here today

Today is the operative word: we check Japan Agent API every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 5 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add japan-agent-api --transport http https://japan-agent-api-production.mk-career-planning.workers.dev/mcp

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

https://japan-agent-api-production.mk-career-planning.workers.dev/mcp

~/.codex/config.toml

[mcp_servers.japan-agent-api]
url = "https://japan-agent-api-production.mk-career-planning.workers.dev/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "japan-agent-api": {
      "url": "https://japan-agent-api-production.mk-career-planning.workers.dev/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "japan-agent-api": {
      "type": "http",
      "url": "https://japan-agent-api-production.mk-career-planning.workers.dev/mcp"
    }
  }
}

Available tools 8

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

municipality

jp_municipality

Which code does this Japanese municipality have on a date (default today)? Give a 5/6-digit code, or prefecture and name (old names OK). Returns status mapped / split_candidates / unknown / invalid, the valid code with English and Japanese names, change type and date (merger, incorporation, division, designated city, name change), confirmed JMA warning areas only, and J-LIS convenience-store certificate availability for 8 certificate types. Facts only, from e-Stat LOD (CC BY 4.0) and J-LIS.

jp_municipality_batch

Which codes are valid on a date for up to 50 Japanese municipalities? e-Stat LOD change history (CC BY 4.0): status mapped / split_candidates (all successors, not apportioned) / unknown / invalid, the code valid on as_of with English and Japanese names, change type and date, confirmed JMA warning areas only, and J-LIS convenience-store certificate availability (available / not_listed / unknown). Facts only; no document preparation or legal advice. Retrying with the same payment is not charged.

catalog

catalog

List the tools of this server with prices, data sources, licensing, daily limits and data freshness.

receipt

get_receipt

Re-fetch the stored result of a settled paid call (e.g. jp_trip_impact_check) by its receipt_id, for when the response was lost after payment. Free. Unknown or unsettled receipt ids return RECEIPT_NOT_FOUND. Results are kept for 90 days after settlement.

trip

jp_trip_impact_check

Does a JMA warning or advisory in effect now match a stop on this Japan itinerary [{date, prefecture}]? Per stop: matched_advisory (with severity), no_match_in_checked_sources (NOT a statement of no impact) or unknown (data missing, or date not today/tomorrow JST). Returns checked sources and areas, unchecked areas, issued_at, retrieved_at, and current JMA typhoon/volcano bulletins (listed, not matched). No forecast. Retrying with the same payment is not charged; use receipt_id with get_receipt.

typhoons

jp_typhoons

Which typhoons is JMA issuing bulletins for right now, and what do the bulletins forecast? Number, name, center position, central pressure, maximum wind, issue time, and forecast-circle centers, radii and times, relayed as structured JSON from JMA bulletins (VPTW60-65). No independent forecast, interpolation or track extension.

volcanoes

jp_volcanoes

What is the current JMA Volcanic Alert Level (1-5, or warning kind) of this volcano or of every JMA-monitored volcano? Name in English or Japanese, or 3-digit JMA code. Returns JMA English and Japanese names, level, previous level and change, issue time, prefectures named in JMA bulletins, source URL and freshness receipt. Relay only; no forecast or interpretation. Gaps filled from JMA website lists (newer wins). No JMA source seen = not_seen_in_checked_feeds, never assumed level 1.

warnings

jp_warnings

Which JMA weather emergency warnings, warnings and advisories are in effect in this Japanese prefecture now? Structured JSON in English and Japanese (type, level, status, areas with JMA's English names, issued_at, source URL). Relay only; no independent forecast.

Endpoints

URL	Transport	State	Latency	Checked
https://japan-agent-api-production.mk-career-planning.workers.dev/mcp	streamable-http	answering	737 ms	5 min ago

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Japan Agent API — questions

Answers built from our own checks of this server.

What can Japan Agent API do?

It exposes 8 tools, read directly from the server on our last check. Among them: catalog, get_receipt, jp_municipality, jp_municipality_batch, jp_trip_impact_check, jp_typhoons and 2 more. 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 Agent API working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 1282 ms. The bar chart above shows every period we have measured.

How do I connect Japan Agent API?

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 Agent API need an API key?

No. Japan Agent API completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 8 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Japan Agent API?

It answers our handshake in 1282 ms on average, which is faster than 2% 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.