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jp.addresstozip/address-to-zip

REMOTE · ADDRESSTOZIP.JP · SCANNED AUG 3

日本の住所と郵便番号を相互変換するMCPサーバー。住所から郵便番号を検索、郵便番号から住所を逆引きします。

Available components

remote · addresstozip.jp 67
+2 this week 67 Trust /100
Trust breakdown (6 categories)

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score →

Endpoint Security63
Transport & Reachability100
Schema Quality & AI Usability76
  • AI-judged instruction clarity (excellent).Pass
  • Context-footprint check failed: tool/resource definitions use about 312 tokens (~156/item across 2 items; 2 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
  • Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management27
  • Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
  • 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
  • 100% of tool parameters carry a description.Pass
Capabilities60
  • Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28. See how to fix → Fail
Install

Add this component to your MCP client. Where a client-specific snippet is available, pick your client below and copy it straight into your config; otherwise use the connection detail shown.

remote · addresstozip.jp

# add to Claude Code
claude mcp add --transport http jp-addresstozip-address-to-zip https://addresstozip.jp/mcp
# ~/.codex/config.toml
[mcp_servers.jp-addresstozip-address-to-zip]
url = "https://addresstozip.jp/mcp"
// opencode.json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "jp-addresstozip-address-to-zip": {
      "type": "remote",
      "url": "https://addresstozip.jp/mcp",
      "enabled": true
    }
  }
}
# add to OpenClaw
openclaw mcp add jp-addresstozip-address-to-zip --url https://addresstozip.jp/mcp --transport streamable-http
# ~/.hermes/config.yaml
mcp_servers:
  jp-addresstozip-address-to-zip:
    url: "https://addresstozip.jp/mcp"
// mcp.json
{
  "mcpServers": {
    "jp-addresstozip-address-to-zip": {
      "type": "http",
      "url": "https://addresstozip.jp/mcp"
    }
  }
}

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

Changelog

Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.

  • 2 Aug 26 +1

    No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.

  • 31 Jul 26 +1
    • We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
  • 30 Jul 26 −2
    • We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
  • 29 Jul 26 +1

    No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.

  • 28 Jul 26 +1

    No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

  • 27 Jul 26 0
    • We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
  • 26 Jul 26 65

    First indexed and scored.

Diagnostics

Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.

Captured 3 Aug 2026 · Probed https://addresstozip.jp/mcp

TLS valid

Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .

Subject Issuer Valid from Valid until Key Signature Serial
CN=addresstozip.jp CN=WE1,O=Google Trust Services,C=US 11 Jun 2026 9 Sept 2026 ECDSA 256 ECDSA-SHA256 ff1b56824d6a948b13fa48546fca25cb
SANs: addresstozip.jp, *.addresstozip.jp
CN=WE1,O=Google Trust Services,C=US (CA) CN=GTS Root R4,O=Google Trust Services LLC,C=US 13 Dec 2023 20 Feb 2029 ECDSA 256 ECDSA-SHA384 7ff31977972c224a76155d13b6d685e3
CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE 15 Nov 2023 28 Jan 2028 ECDSA 384 SHA256-RSA 7fe530bf331343bedd821610493d8a1b
DNSSEC insecure

Validation of addresstozip.jp. — Not signed

Zone DS Keys Algorithms Outcome
. trust_anchor 20326, 38696 8, 8 Verified
jp. present 33631 8 Verified
addresstozip.jp. absent Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation
Authentication No authorisation required

The endpoint answered without asking for a token. Anyone who knows the URL can reach it.

Result No authorisation required
HTTP status 200
Header Value
strict-transport-security max-age=63072000; includeSubDomains; preload
content-security-policy default-src 'self'; base-uri 'self'; form-action 'self'; frame-ancestors 'none'; img-src 'self' data: https://*.googletagmanager.com https://*.google-analytics.com https://*.clarity.ms https://c.bing.com; script-src 'self' 'unsafe-inline' https://challenges.cloudflare.com https://static.cloudflareinsights.com https://*.googletagmanager.com https://*.clarity.ms; style-src 'self' 'unsafe-inline' https://fonts.googleapis.com; font-src 'self' https://fonts.gstatic.com; frame-src https://challenges.cloudflare.com; connect-src 'self' https://challenges.cloudflare.com https://cloudflareinsights.com https://*.googletagmanager.com https://*.google-analytics.com https://*.analytics.google.com https://analytics.google.com https://*.clarity.ms https://c.bing.com
x-content-type-options nosniff
x-frame-options DENY
referrer-policy strict-origin-when-cross-origin
Transports 2 probes
Transport URL Outcome Status Location
streamable-http https://addresstozip.jp/mcp Verified 200
http (plaintext) http://addresstozip.jp/mcp HTTPS enforced 301 https://addresstozip.jp/mcp
MCP tools — 2 exposed · ~254 tokens

The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability.

Tool Tokens
lookup_zipcode ~110

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。

NameTypeReqDescription
zipcodestringyes郵便番号(例: 100-0005 または 1000005。全角数字・ハイフン有無も可)

No output schema declared.

No examples provided.

search_address ~144

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。

NameTypeReqDescription
addressstringyes検索する住所(例: 東京都千代田区丸の内 / Marunouchi, Chiyoda-ku, Tokyo)
limitinteger—返却件数の上限(1-50・既定10)

No output schema declared.

No examples provided.