# 不動産情報検索・分析 MCP (remote · mcp.n-3.ai)

中小企業庁が公開している公共調達情報を検索するためのサービスです。

- Trust score: 65/100 (medium)
- Change this week: +5
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- remote · `mcp.n-3.ai`: 65/100 (this document), [markdown](https://verifymcp.io/servers/n-3inc-kkj/mcp.md), [page](https://verifymcp.io/servers/n-3inc-kkj/mcp)

## Channel facts

- Endpoint: `https://mcp.n-3.ai/mcp?tools=kkj-search`
- Transports: `streamable-http`
- Auth: `none`
- Version: `0.0.2`

## Trust breakdown

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. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-03.

- **Endpoint Security**: 63/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS not yet verified: we couldn't determine whether a plaintext access path exists.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 55/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 960 tokens (~960/item across 1 items; 1 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 27/100
  - Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add --transport http n-3inc-kkj https://mcp.n-3.ai/mcp?tools=kkj-search
```

### Codex

```toml
[mcp_servers.n-3inc-kkj]
url = "https://mcp.n-3.ai/mcp?tools=kkj-search"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "n-3inc-kkj": {
      "type": "remote",
      "url": "https://mcp.n-3.ai/mcp?tools=kkj-search",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add n-3inc-kkj --url https://mcp.n-3.ai/mcp?tools=kkj-search --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  n-3inc-kkj:
    url: "https://mcp.n-3.ai/mcp?tools=kkj-search"
```

### Other

```json
{
  "mcpServers": {
    "n-3inc-kkj": {
      "type": "http",
      "url": "https://mcp.n-3.ai/mcp?tools=kkj-search"
    }
  }
}
```

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

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-02 (score 65, +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.

### 2026-07-31 (score 64, +2)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-30 (score 62, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-29 (score 62, +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.

### 2026-07-28 (score 61, +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.

### 2026-07-27 (score 60, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-26 (score 60)

First indexed and scored.

## MCP tools (1)

### `kkj-search` (~960 tokens)

公共調達情報検索 / Public Procurement Information Search

公共調達情報を検索します。検索クエリ、件名、機関名、都道府県コード、カテゴリ（物品、工事、役務）などのパラメータを使用して詳細な検索が可能です。

Input parameters:

- `category` (string): カテゴリー (1:物品, 2:工事, 3:役務)
- `certification` (array): 入札資格 (A, B, C, D)
- `cftIssueDate` (string): 公告日またはデータ取得日の範囲。日付は YYYY-MM-DD 形式で「開始日/終了日」のように指定する（例: "2026-07-01/2026-07-15"。開始日のみ: "2026-07-01/"、終了日のみ: "/2026-07-15"、単日: "2026-07-14/2026-07-14"）
- `count` (integer): 返却する検索結果の最大件数（1〜1000、デフォルト: 10）。API にページングはないため、総ヒット件数（応答の SearchHits）がこれを超える場合は count を増やすか、cftIssueDate などの日付範囲で条件を分割して取得する
- `lgCode` (array): 都道府県コード (JIS X0401): 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…
- `maxDescriptionLength` (integer): 公告本文（ProjectDescription）の最大文字数（デフォルト: 1000）。超過分は切り詰められ ProjectDescriptionTruncated が true になる。全文が必要な場合は大きな値を指定するか、ExternalDocumentURI の原文書を参照する
- `openingTendersEvent` (string): 開札日の範囲。YYYY-MM-DD 形式で「開始日/終了日」のように指定する（例: "2026-07-01/2026-08-31"。片側のみも可）
- `organizationName` (string): 機関名
- `periodEndTime` (string): 納入期限日の範囲。YYYY-MM-DD 形式で「開始日/終了日」のように指定する（例: "2026-07-01/2026-12-31"。片側のみも可）
- `procedureType` (string): 公示種別 (1:一般競争入札, 2:簡易公募型競争入札, 3:簡易公募型指名競争入札)
- `projectName` (string): 件名
- `query` (string): 検索文字列
- `tenderSubmissionDeadline` (string): 入札開始日の範囲。YYYY-MM-DD 形式で「開始日/終了日」のように指定する（例: "2026-07-01/2026-08-31"。片側のみも可: "2026-07-01/"）

Output parameters:

- `SearchHits` (number): 検索条件に該当した総ヒット件数（常に返る）。SearchResult の件数（最大 count 件）がこれより少ない場合、続きは cftIssueDate などの日付範囲で条件を分割して取得する（この API にページングはない）
- `SearchResult` (array): 検索結果の一覧（最大 count 件）
- `message` (string): 0件時の案内

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/n-3inc-kkj/mcp#diagnostics

## Score history

- 2026-08-03: 65
- 2026-08-02: 65
- 2026-08-01: 64
- 2026-07-31: 64
- 2026-07-30: 62
- 2026-07-29: 62
- 2026-07-28: 61
- 2026-07-27: 60
- 2026-07-26: 60

## Links

- Remote endpoint: https://mcp.n-3.ai/mcp?tools=kkj-search
- Website: https://n-3.ai/apps/reinfo-agent
- Changelog RSS feed: https://verifymcp.io/servers/n-3inc-kkj/mcp/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/n-3inc-kkj/mcp/changelog.json
- HTML version of this page: https://verifymcp.io/servers/n-3inc-kkj/mcp