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jp.addresstozip/address-to-zip

by addresstozip.jp · remote · no sign-in to list tools · v1.2.0 · published by jp.addresstozip

日本の住所⇄郵便番号を変換。表記ゆれも吸収。Japan address ⇄ postal code, handles messy input. Free tier, no API key.

Read only
CompareRegistry entry

2 tools: 2 only read.

Scanned Oct 21, 2026

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http address-to-zip https://addresstozip.jp/mcp

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

2 tools

Only reads 2Claude Code: allow
  • lookup_zipcode郵便番号から住所を逆引きする。100-0005 または 1000005 形式に対応(全角数字・ハイフン有無は不問)。結果には日本郵便準拠のローマ字表記(romaji)を含む。 / Reverse lookup: get the Japanese address for a postal code.No findings

    Why it is in this group

    • The name "lookup_zipcode" says "lookup": a word for reading.
    Description, as the server wrote it
    郵便番号から住所を逆引きする。100-0005 または 1000005 形式に対応(全角数字・ハイフン有無は不問)。結果には日本郵便準拠のローマ字表記(romaji)を含む。 / Reverse lookup: get the Japanese address for a postal code. Accepts 100-0005 or 1000005 (full-width digits and missing hyphens are fine). Results include Japan Post romaji.
  • search_address日本の住所文字列から郵便番号を検索する。番地・建物名付きでも町名まで解釈する。ローマ字・英語表記(例: Marunouchi, Chiyoda-ku, Tokyo)でも検索可。結果には日本郵便準拠のローマ字表記(romaji)を含む。 / Look up a Japanese postal code from an address string.No findings

    Why it is in this group

    • The name "search_address" says "search": a word for reading.
    Description, as the server wrote it
    日本の住所文字列から郵便番号を検索する。番地・建物名付きでも町名まで解釈する。ローマ字・英語表記(例: Marunouchi, Chiyoda-ku, Tokyo)でも検索可。結果には日本郵便準拠のローマ字表記(romaji)を含む。 / Look up a Japanese postal code from an address string. Tolerates messy input (full-width digits, hyphen variants, street numbers and building names) and resolves down to the town level. Romaji/English input is accepted. Results include Japan Post romaji.

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 1.2.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http address-to-zip https://addresstozip.jp/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__address-to-zip__search_address",
      "mcp__address-to-zip__lookup_zipcode"
    ],
    "ask": [],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as address-to-zip. Review it before you use it.