Shirabe Japan Data Hub MCP Server

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answering

Shirabe Japan Data Hub is answering right now. Last checked 11 min ago. It exposes 5 tools.

Japan data tools for AI agents: calendar (rokuyo), address, name splitting, corporate number lookup

Uptime history 52 days of history · worst day 94%

52 days agonow

95.6%

Uptime 24h

87 of 91 checks

Tools

read from the server

136 ms

Response time

average over 24h

open, no key

Access

streamable-http

Shirabe Japan Data Hub does not always answer

Over the last week it answered 98.4% 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 11 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add hub --transport http https://shirabe.dev/mcp

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

{
  "mcpServers": {
    "hub": {
      "url": "https://shirabe.dev/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.hub]
url = "https://shirabe.dev/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "hub": {
      "url": "https://shirabe.dev/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "hub": {
      "url": "https://shirabe.dev/mcp"
    }
  }
}

Available tools 5

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

corporation

corporation_lookup

Look up a Japanese company by its 13-digit corporate number (法人番号) against the National Tax Agency (NTA) corporate-number registry. Returns the registered trade name, head-office address, change history and other public fields as JSON, plus mandatory NTA attribution. Useful when an AI agent already has a corporate number and needs canonical company facts (e.g. validating or enriching a B2B record). To go the other way (company name → number), use corporation_search. Source: Shirabe Corporation API.

corporation_search

Search the Japanese corporate-number registry (National Tax Agency) by company name and return matching companies, each with its 13-digit corporate number (法人番号), registered name and address, plus mandatory NTA attribution. Handles trade-name variants (㈱ / (株) / 株式会社) via normalization. Useful when an AI agent has a company name and needs to resolve its corporate number / canonical record. To go the other way (number → company), use corporation_lookup. Source: Shirabe Corporation API.

lookup

lookup_calendar

Look up Japanese calendar information for a given date: Rokuyo (six-day cycle such as Taian/Butsumetsu), Rekichu (almanac notes), Eto (sexagenary cycle), 24 solar terms, and purpose-based auspiciousness scores. Useful when an AI agent needs canonical Japanese calendar facts (e.g. choosing an auspicious date for a wedding or ceremony). Source: Shirabe Calendar API (shirabe.dev).

normalize

normalize_japanese_address

Normalize a free-form Japanese address against the official Address Base Registry (ABR, all 47 prefectures). Returns the canonical form, structured components (prefecture/city/town/block/building), postal code, WGS84 coordinates, match level (0-4) and confidence, plus mandatory CC BY 4.0 attribution. Useful when an AI agent must clean or de-duplicate Japanese B2B/customer records. Source: Shirabe Address API.

split

split_japanese_name

Split a Japanese personal name into family and given parts using IPAdic person-name POS tags (with whitespace/length heuristics as fallback). Returns family, given, and a confidence score (0-1; warning when low). Useful for normalizing name fields in HR, CRM, or form data. Source: Shirabe Text API.

Endpoints

URL	Transport	State	Latency	Checked
https://shirabe.dev/mcp	streamable-http	answering	151 ms	11 min ago

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Shirabe Japan Data Hub — questions

Answers built from our own checks of this server.

What can Shirabe Japan Data Hub do?

It exposes 5 tools, read directly from the server on our last check. Among them: corporation_lookup, corporation_search, lookup_calendar, normalize_japanese_address, split_japanese_name. 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 Shirabe Japan Data Hub working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 87 of 91 checks got a reply (95.6%), average response time 136 ms. The bar chart above shows every period we have measured.

How do I connect Shirabe Japan Data Hub?

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 Shirabe Japan Data Hub need an API key?

No. Shirabe Japan Data Hub completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 5 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Shirabe Japan Data Hub?

It answers our handshake in 136 ms on average, which is faster than 89% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.