Japan Business Data MCP Server

by matanemaboroshi Your server? Claim it

answering

Japan Business Data is answering right now. Last checked 13 min ago.

Normalize and romanize Japanese addresses, look up postal codes, count Japanese business days.

Uptime history 44 hours of history

44 hours agonow

100.0%

Uptime 24h

92 of 92 checks

—

Tools

hidden behind auth

534 ms

Response time

average over 24h

OAuth sign-in

Access

streamable-http

Nothing serious here today

Today is the operative word: we check Japan Business Data 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 13 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add japan-business-data --transport http https://japan-business-data.mcpize.run

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

{
  "mcpServers": {
    "japan-business-data": {
      "url": "https://japan-business-data.mcpize.run"
    }
  }
}

~/.codex/config.toml

[mcp_servers.japan-business-data]
url = "https://japan-business-data.mcpize.run"

.cursor/mcp.json

{
  "mcpServers": {
    "japan-business-data": {
      "url": "https://japan-business-data.mcpize.run"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "japan-business-data": {
      "url": "https://japan-business-data.mcpize.run"
    }
  }
}

This endpoint answered with an authorization challenge. The server is running, and it signs you in through your browser: there is no API key to paste.

Endpoints

URL	Transport	State	Latency	Checked
https://japan-business-data.mcpize.run	streamable-http	sign-in	493 ms	13 min ago

Alternatives to Japan Business Data

same job, measured the same way

Japan Business Tools

by ossalt

Japanese holidays, business days, eras, postal codes, addresses and corporate numbers.

13 tools answering

Korean Address to English — Convert & Validate (주소 영문)

by kr-data-api

Korean addresses to official English: road address, postal code, romanized unit; validated vs gov DB

answering

Zip Codes MCP

by mrfentmen

Look up US postal codes, cities, and states from Zippopotam. No key required.

82 installs/wk local only

JP Data (Japanese Public Business Data)

by kimotostudio

Japanese open-data MCP server: corporate-number validation, zengin bank codes, national holidays

local only

Busca de CEP

by mcp-dir

Returns the postal code (CEP) and standardized address from the Brazilian Post from a given address.

7 tools answering

Email Footer Law Lint

by jmshinhwa

Fourteen checks on an HTML email footer: CAN-SPAM postal address and 10-business-day opt-out, CASL's

53 installs/wk local only

Japan Utils

by vivek081166

Japan utilities for AI agents: era, romaji, postal codes, holidays, kana, name splitting.

148 installs/wk local only

Hungarian Postcode Validator

by unbearabledev

Hungarian postcode lookup + validation - 3,484 codes, sub-10ms lookups, bulk address endpoint.

answering

Japan Business Data — questions

Answers built from our own checks of this server.

Why is there no tool list for Japan Business Data?

The server answered our handshake with an authorization challenge, so it is running — but it will not describe its tools to an anonymous client. To see them you need to connect with your own credentials. We record it as alive, not as broken: 100.0% of checks in the last 24 hours got a reply.

Is Japan Business Data 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 534 ms. The bar chart above shows every period we have measured.

How do I connect Japan Business Data?

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. You sign in through your browser once and the client keeps the session: no key to copy, and it refuses anonymous clients.

How do you sign in to Japan Business Data?

No API key is involved. Japan Business Data answers our knock with an OAuth challenge, so you authorise it once in your browser and the client keeps the session. That is also why we see no tool list: it will not describe itself to an anonymous client, and that is the server working as intended, not a fault.

How fast is Japan Business Data?

It answers our handshake in 534 ms on average, which is faster than 21% 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.