Japan Data MCP Server

by netlify-japan-data-mcp Your server? Claim it

answering

Japan Data MCP is answering right now. Last checked 7 min ago. It exposes 4 tools.

Japanese law, corporation & statistics data as MCP, normalized to English with source attribution.

Uptime history 42 days of history · worst day 0%

42 days agonow

100.0%

Uptime 24h

92 of 92 checks

Tools

read from the server

532 ms

Response time

average over 24h

open, no key

Access

streamable-http

Nothing serious here today

Today is the operative word: we check Japan Data MCP 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 7 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add japan-data-mcp --transport http https://japan-data-mcp.netlify.app/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "japan-data-mcp": {
      "url": "https://japan-data-mcp.netlify.app/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.japan-data-mcp]
url = "https://japan-data-mcp.netlify.app/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "japan-data-mcp": {
      "url": "https://japan-data-mcp.netlify.app/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "japan-data-mcp": {
      "url": "https://japan-data-mcp.netlify.app/mcp"
    }
  }
}

Available tools 4

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

corporation

search_corporation

Look up a Japanese corporation by partial name or 13-digit corporate number, returning English-keyed records (corporate number, name, address). Requires a free National Tax Agency application ID.

japanese

search_japanese_law

Search Japanese laws and regulations by keyword and return English-normalized metadata (law id, type, era, promulgation date, category) plus the matched Japanese text. No API key required. Japanese keywords match best; the underlying source is full-text Japanese.

law

get_law_text

Fetch the original Japanese text of a law by its law_id or revision_id (as returned by search_japanese_law). Optionally extract a single article. Returns the authentic Japanese legal text with English-normalized metadata and the required source attribution. No API key required. Typical flow: search_japanese_law -> get_law_text.

statistics

search_statistics

Search Japanese official statistics tables (e-Stat) by keyword and return English-keyed table metadata (id, title, organization, dates). Requires a free e-Stat application ID.

Endpoints

URL	Transport	State	Latency	Checked
https://japan-data-mcp.netlify.app/mcp	streamable-http	answering	489 ms	7 min ago

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Japan Data MCP — questions

Answers built from our own checks of this server.

What can Japan Data MCP do?

It exposes 4 tools, read directly from the server on our last check. Among them: get_law_text, search_corporation, search_japanese_law, search_statistics. 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 Data MCP working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 532 ms. The bar chart above shows every period we have measured.

How do I connect Japan Data MCP?

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 Data MCP need an API key?

No. Japan Data MCP completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 4 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Japan Data MCP?

It answers our handshake in 532 ms on average, which is faster than 26% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.