不動産情報サービス MCP
REMOTE · MCP.N-3.AI · SCANNED SEP 20
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
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 → Why this is hard to score →
Endpoint Security63
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS enforcement could not be verified: the plaintext port answered with HTTP 406, which proves neither a plaintext path nor enforcement. View diagnostics → Unverified
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability61
- AI-judged instruction clarity (excellent).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 Management100
- No destabilizing schema changes in the last 30 days.Pass
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
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 3 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 3 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
How do I install the 不動産情報サービス MCP server?
不動産情報サービス MCP is a hosted endpoint at https://mcp.n-3.ai/mcp?tools=get-time,reinfolib-real-estate-price,reinfolib-city-list, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · mcp.n-3.ai
claude mcp add --transport http n-3inc-reinfo 'https://mcp.n-3.ai/mcp?tools=get-time,reinfolib-real-estate-price,reinfolib-city-list'
{
"mcpServers": {
"n-3inc-reinfo": {
"url": "https://mcp.n-3.ai/mcp?tools=get-time,reinfolib-real-estate-price,reinfolib-city-list"
}
}
} {
"servers": {
"n-3inc-reinfo": {
"type": "http",
"url": "https://mcp.n-3.ai/mcp?tools=get-time,reinfolib-real-estate-price,reinfolib-city-list"
}
}
} [mcp_servers.n-3inc-reinfo] url = "https://mcp.n-3.ai/mcp?tools=get-time,reinfolib-real-estate-price,reinfolib-city-list"
{
"$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
}
}
} 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
mcp_servers:
n-3inc-reinfo:
url: "https://mcp.n-3.ai/mcp?tools=get-time,reinfolib-real-estate-price,reinfolib-city-list" {
"McpServers": {
"n-3inc-reinfo": {
"Transport": "http",
"Url": "https://mcp.n-3.ai/mcp?tools=get-time,reinfolib-real-estate-price,reinfolib-city-list"
}
}
} assistant mcp add n-3inc-reinfo -t streamable-http -u 'https://mcp.n-3.ai/mcp?tools=get-time,reinfolib-real-estate-price,reinfolib-city-list'
{
"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.
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.
- 31 Aug 26 0
- Stability: 0.97 → pass security
- 30 Aug 26 0
- Stability: pass → 0.97 functional
- 26 Aug 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
- 25 Aug 26 0
- Stability: 0.97 → pass security
- 24 Aug 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 93 to 97. That category is still filling its 30-day observation window: 28 days of observed history at the previous scan, 29 at this one. The score rises as the window fills, whether or not the server changes.
- 11 Aug 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
- 1 Aug 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
- 30 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
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 20 Sept 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 | 29 Aug 2026 | 27 Nov 2026 | ECDSA 256 | ECDSA-SHA256 | e1bbd643714c5fa13004c449de8e16e |
| 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 |
Background: What to check on a remote MCP endpoint →
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 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
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 |
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. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
get-time 時刻取得 / Get Current 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。
| Name | Type | Req | Description |
|---|---|---|---|
| formatStr | string | – | フォーマット文字列 (date-fns形式。省略時: 'yyyy-MM-dd HH:mm:ss') |
| timezone | string | – | タイムゾーン (IANA 形式。例: 'Asia/Tokyo'。省略時: Asia/Tokyo) |
| Name | Type | Req | Description |
|---|---|---|---|
| time | string | yes | フォーマット済みの現在時刻 |
| timezone | string | yes | 使用したタイムゾーン |
No examples provided.
reinfolib-city-list 都道府県内の市区町村一覧取得 / City List in Prefecture ~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。
| Name | Type | Req | Description |
|---|---|---|---|
| area | string | yes | 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… |
| language | string | – | 出力結果の言語 (ja:日本語, en:英語) |
| Name | Type | Req | Description |
|---|---|---|---|
| data | array | yes | 市区町村一覧 |
No examples provided.
reinfolib-real-estate-price 不動産価格情報取得 / Real Estate Price Information ~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。
| Name | Type | Req | Description |
|---|---|---|---|
| area | string | – | 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… |
| city | string | – | 市区町村コード (5桁) |
| language | string | – | 出力結果の言語 (ja:日本語, en:英語) |
| limit | integer | – | 取得件数 (デフォルト: 10件) |
| priceClassification | string | – | 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) |
| quarter | string | – | 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) |
| station | string | – | 駅コード (6桁) |
| year | string | yes | 取引時期(年) (形式: YYYY) |
| Name | Type | Req | Description |
|---|---|---|---|
| data | array | yes | 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） |
| returnedCount | number | yes | 今回返した件数 |
| totalCount | number | yes | 検索条件に該当した全件数 |
| truncated | boolean | yes | true 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.
What is the 不動産情報サービス MCP server?
不動産情報サービス MCP is listed in the public MCP registry as io.github.n-3inc/reinfo. 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。 This page covers its hosted endpoint (https://mcp.n-3.ai/mcp?tools=get-time,reinfolib-real-estate-price,reinfolib-city-list).
Is the 不動産情報サービス MCP server safe to use?
不動産情報サービス MCP scores 78 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the 不動産情報サービス MCP server expose?
不動産情報サービス MCP exposes 3 tools: get-time, reinfolib-real-estate-price, reinfolib-city-list. Their descriptions and schemas cost roughly 1,138 tokens of context every time the server is loaded.
Does the 不動産情報サービス MCP server require authentication?
No. We connected to 不動産情報サービス MCP without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the 不動産情報サービス MCP server still maintained?
不動産情報サービス MCP is still listed as active in the MCP registry. We last reached this channel on 20 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.