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不動産情報サービス MCP

REMOTE · MCP.N-3.AI · SCANNED AUG 3

国土交通省の不動産情報ライブラリから不動産価格データを取得するためのサービスです。

Available components

remote · mcp.n-3.ai 65
+5 this week 65 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 Usability53
  • AI-judged instruction clarity (good).Pass
  • Context-footprint check failed: tool/resource definitions use about 1138 tokens (~379/item across 3 items; 3 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
  • Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Capabilities100
  • Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
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 · mcp.n-3.ai

# add to Claude Code
claude mcp add --transport http n-3inc-reinfo https://mcp.n-3.ai/mcp?tools=get-time,reinfolib-real-estate-price,reinfolib-city-list
# ~/.codex/config.toml
[mcp_servers.n-3inc-reinfo]
url = "https://mcp.n-3.ai/mcp?tools=get-time,reinfolib-real-estate-price,reinfolib-city-list"
// opencode.json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "n-3inc-reinfo": {
      "type": "remote",
      "url": "https://mcp.n-3.ai/mcp?tools=get-time,reinfolib-real-estate-price,reinfolib-city-list",
      "enabled": true
    }
  }
}
# add to OpenClaw
openclaw mcp add n-3inc-reinfo --url https://mcp.n-3.ai/mcp?tools=get-time,reinfolib-real-estate-price,reinfolib-city-list --transport streamable-http
# ~/.hermes/config.yaml
mcp_servers:
  n-3inc-reinfo:
    url: "https://mcp.n-3.ai/mcp?tools=get-time,reinfolib-real-estate-price,reinfolib-city-list"
// mcp.json
{
  "mcpServers": {
    "n-3inc-reinfo": {
      "type": "http",
      "url": "https://mcp.n-3.ai/mcp?tools=get-time,reinfolib-real-estate-price,reinfolib-city-list"
    }
  }
}

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.

  • 3 Aug 26 +1

    No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.

  • 1 Aug 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
  • 30 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
  • 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.

  • 27 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
  • 26 Jul 26 59

    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://mcp.n-3.ai/mcp?tools=get-time,reinfolib-real-estate-price,reinfolib-city-list

TLS valid

Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .

Subject Issuer Valid from Valid until Key Signature Serial
CN=n-3.ai CN=WE1,O=Google Trust Services,C=US 1 Jul 2026 29 Sept 2026 ECDSA 256 ECDSA-SHA256 c5fb7b27aadb98fc13520b0defe9d256
SANs: n-3.ai, mcp.n-3.ai
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 mcp.n-3.ai. — Not signed

Zone DS Keys Algorithms Outcome
. trust_anchor 20326, 38696 8, 8 Verified
ai. present 3799 8 Verified
n-3.ai. 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
Transports 2 probes
Transport URL Outcome Status Location
streamable-http https://mcp.n-3.ai/mcp?tools=get-time,reinfolib-real-estate-price,reinfolib-city-list Verified 200
http (plaintext) http://mcp.n-3.ai/mcp?tools=get-time,reinfolib-real-estate-price,reinfolib-city-list Inconclusive 406
MCP tools — 3 exposed · ~1,138 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
get-time ~141

指定したタイムゾーンの現在時刻を取得します。フォーマット文字列には date-fns の形式を使用します（例: 'yyyy-MM-dd HH:mm:ss', 'yyyy年MM月dd日 HH時mm分ss秒'）。24時間表記には 'HH' を使用してください。

NameTypeReqDescription
formatStrstring—フォーマット文字列 (date-fns形式。省略時: 'yyyy-MM-dd HH:mm:ss')
timezonestring—タイムゾーン (IANA 形式。例: 'Asia/Tokyo'。省略時: Asia/Tokyo)
NameTypeReqDescription
timestringyesフォーマット済みの現在時刻
timezonestringyes使用したタイムゾーン

No examples provided.

reinfolib-city-list ~416

国土交通省の不動産情報ライブラリから都道府県内の市区町村一覧を取得します。都道府県コードを指定して検索します。ここで得た市区町村コード（id）は reinfolib-real-estate-price の city 引数に渡せます。

NameTypeReqDescription
areastringyes都道府県コード: 北海道=01, 青森県=02, 岩手県=03, 宮城県=04, 秋田県=05, 山形県=06, 福島県=07, 茨城県=08, 栃木県=09, 群馬県=10, 埼玉県=11, 千葉県=12, 東京都=13, 神奈川県=14, 新潟県=15, 富山県=16, 石川県=17, 福井県=18, 山梨県=19, 長野県=20, 岐阜県=21, 静岡県=22, 愛知県=23, 三重県=2…
languagestring—出力結果の言語 (ja:日本語, en:英語)
NameTypeReqDescription
dataarrayyes市区町村一覧

No examples provided.

reinfolib-real-estate-price ~581

国土交通省の不動産情報ライブラリから不動産価格（取引価格・成約価格）情報を取得します。取引時期、地域（都道府県、市区町村、駅）などを指定して検索することが可能。市区町村コードは reinfolib-city-list ツールで取得できます。

NameTypeReqDescription
areastring—都道府県コード: 北海道=01, 青森県=02, 岩手県=03, 宮城県=04, 秋田県=05, 山形県=06, 福島県=07, 茨城県=08, 栃木県=09, 群馬県=10, 埼玉県=11, 千葉県=12, 東京都=13, 神奈川県=14, 新潟県=15, 富山県=16, 石川県=17, 福井県=18, 山梨県=19, 長野県=20, 岐阜県=21, 静岡県=22, 愛知県=23, 三重県=2…
citystring—市区町村コード (5桁)
languagestring—出力結果の言語 (ja:日本語, en:英語)
limitinteger—取得件数 (デフォルト: 10件)
priceClassificationstring—価格情報区分コード (01:不動産取引価格情報, 02:成約価格情報)
quarterstring—取引時期(四半期) (1:1月〜3月, 2:4月〜6月, 3:7月〜9月, 4:10月〜12月)
stationstring—駅コード (6桁)
yearstringyes取引時期(年) (形式: YYYY)
NameTypeReqDescription
dataarrayyes不動産価格情報リスト（値が空のフィールドは省略される）
returnedCountnumberyes今回返した件数
totalCountnumberyes検索条件に該当した全件数
truncatedbooleanyestrue の場合、limit を超える結果が省略されている。limit の引き上げ（最大100）または quarter・city・station での絞り込みで全量を取得できる

No examples provided.