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Japan Utilities

Verified Integration
Author: @vivek081166•Category: ServerApplication
GitHub Repository
JSON-RPC 2.0
Protocol Standard
Sub-second
Execution Latency
Active
Operational Status
Tags:#Claude#Search#Database#API#Git#AI#GitHub#Node.js

Client Configuration

— Connect Japan Utilities to Claude Desktop or Cursor in seconds
{
  "mcpServers": {
    "japan-utilities": {
      "command": "uvx",
      "args": [
        "japan-utils-mcp"
      ],
      "env": {}
    }
  }
}
Paste into ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows).
Architecture & Capabilities

System Overview

Exposes a comprehensive suite of Japan-specific data utilities to AI agents, covering era conversion, romaji transliteration, postal code lookups, holiday calendars, kana conversion, width normalization, and name splitting.

Indexed Date

7/23/2026

License

Open Source

Protocol Layer

stdio / SSE RPC

Frequently Asked Questions

Architecture and operational details for Japan Utilities

While highly accurate, romaji conversion for personal names relies on common readings and may not capture unusual readings. Postal code data is refreshed via the 'posuto' library, covering national holidays only. Era conversion supports Meiji through Reiwa periods.

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