Japan Utils

Wraps a handful of Python libraries (jpholiday, posuto, pykakasi, jaconv, namedivider-python) into MCP tools for Japan-specific operations that LLMs routinely hallucinate. You get era-to-Gregorian conversion (令和8年 to 2026 and back), kanji-to-romaji using Hepburn rules, postal code lookups against Japan Post's KEN_ALL dataset, national holiday checks, kana conversion between hiragana/katakana/half-width forms, full-width/half-width ASCII normalization, and statistical Japanese name splitting. Runs via uvx with no install hassle. Useful when you're building agents that handle Japanese addresses, dates, or text normalization and need deterministic answers instead of plausible-sounding garbage. Covers Meiji through Reiwa for era calculations, national holidays only.