# Japan Public Data (法人番号・登録支援機関・官公需入札) (remote · mcp-tools.takara0408103123.workers.dev)

Japan public data: corporate numbers, registered support organizations, government bid notices.

- Trust score: 72/100 (medium)
- Change this week: +4
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-04

## Components

- remote · `mcp-tools.takara0408103123.workers.dev`: 72/100 (this document), [markdown](https://verifymcp.io/servers/takaratomita-mcp-tools/mcp-tools.md), [page](https://verifymcp.io/servers/takaratomita-mcp-tools/mcp-tools)

## Channel facts

- Endpoint: `https://mcp-tools.takara0408103123.workers.dev/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `0.1.0`

## 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 2026-11-04.

- **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 enforcement could not be verified: the plaintext port answered with HTTP 405, which proves neither a plaintext path nor enforcement.
  - 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**: 69/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 654 tokens (~218/item across 3 items; 3 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 43/100
  - Stability observed for 13 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.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 3 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 3 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### How do I install the Japan Public Data (法人番号・登録支援機関・官公需入札) MCP server?

Japan Public Data (法人番号・登録支援機関・官公需入札) is a hosted endpoint at https://mcp-tools.takara0408103123.workers.dev/mcp, 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.

### Claude

```bash
claude mcp add --transport http takaratomita-mcp-tools 'https://mcp-tools.takara0408103123.workers.dev/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "takaratomita-mcp-tools": {
      "url": "https://mcp-tools.takara0408103123.workers.dev/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "takaratomita-mcp-tools": {
      "type": "http",
      "url": "https://mcp-tools.takara0408103123.workers.dev/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.takaratomita-mcp-tools]
url = "https://mcp-tools.takara0408103123.workers.dev/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "takaratomita-mcp-tools": {
      "type": "remote",
      "url": "https://mcp-tools.takara0408103123.workers.dev/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add takaratomita-mcp-tools --url 'https://mcp-tools.takara0408103123.workers.dev/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  takaratomita-mcp-tools:
    url: "https://mcp-tools.takara0408103123.workers.dev/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "takaratomita-mcp-tools": {
      "Transport": "http",
      "Url": "https://mcp-tools.takara0408103123.workers.dev/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add takaratomita-mcp-tools -t streamable-http -u 'https://mcp-tools.takara0408103123.workers.dev/mcp'
```

### Other

```json
{
  "mcpServers": {
    "takaratomita-mcp-tools": {
      "type": "http",
      "url": "https://mcp-tools.takara0408103123.workers.dev/mcp"
    }
  }
}
```

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.

### 2026-11-04 (score 72, +1)

No change was recorded against any check on this day. Stability & Change Management went from 40 to 43. That category is still filling its 30-day observation window: 12 days of observed history at the previous scan, 13 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-02 (score 71, +1)

No change was recorded against any check on this day. Stability & Change Management went from 33 to 37. That category is still filling its 30-day observation window: 10 days of observed history at the previous scan, 11 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-31 (score 70, +1)

No change was recorded against any check on this day. Stability & Change Management went from 27 to 30. That category is still filling its 30-day observation window: 8 days of observed history at the previous scan, 9 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-29 (score 69, +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.

### 2026-10-27 (score 68, +1)

No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-24 (score 67, +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.

### 2026-10-23 (score 66, 0)

- [functional improvement] Stability: unverified → 0.03

### 2026-10-22 (score 66)

First indexed and scored.

## MCP tools (3)

### `lookup_corporate_number` (~145 tokens)

Lookup Japanese corporate number

Look up Japanese companies in the National Tax Agency Corporate Number Publication Site. Search by 13-digit corporate number, or by company name. Returns name, address and status. 国税庁 法人番号公表サイトから、法人番号（13桁）または法人名で法人情報（名称・所在地・閉鎖有無）を検索します。

Input parameters:

- `name` (string): Company name, partial match, closed companies excluded / 法人名（部分一致・閉鎖法人は対象外）。number とは同時指定不可
- `number` (string): 13-digit corporate number / 法人番号（13桁）

### `search_support_orgs` (~250 tokens)

Search Japanese registered support organizations (SSW)

Search the Immigration Services Agency of Japan registry of Registered Support Organizations for Specified Skilled Workers. Filter by name, location (prefecture/city in head office or support office address) and supported language. Organizations that reported suspension are excluded unless includeSuspended is true. 出入国在留管理庁「登録支援機関登録簿」から、特定技能外国人の登録支援機関を名称・所在地・対応言語で検索します（同梱データ・基準日あり）。

Input parameters:

- `includeSuspended` (boolean): Include organizations that reported suspension / 支援業務休止の届出がある機関も含める
- `language` (string): Supported language in Japanese / 対応言語（例：ベトナム語、英語）
- `limit` (integer): Max results (default 10, max 20) / 最大件数
- `location` (string): Prefecture or city, partial match on address / 所在地（例：東京都、横浜市。住所の部分一致）
- `name` (string): Organization name, partial match / 名称（部分一致）

### `search_local_govt_bids` (~259 tokens)

Search Japanese public procurement notices

Search bid and tender notices from Japanese local governments and national agencies via the KKJ (官公需情報ポータルサイト) search API by the Small and Medium Enterprise Agency. Filter by keywords (AND), prefecture, issuing organization and notice date. Returns title, organization, dates and the notice URL. 官公需情報ポータルサイトの検索APIで、自治体・国の機関の入札・公募情報をキーワード・都道府県・機関名・公告日で検索します。

Input parameters:

- `limit` (integer): Max results (default 10, max 20) / 最大件数
- `organization` (string): Issuing organization, partial match / 機関名（部分一致。例：横浜市）
- `prefecture` (string): Prefecture name / 都道府県（例：東京都、大阪）
- `query` (string): Keywords separated by spaces (AND) / キーワード（空白区切りでAND）
- `since` (string): Notices issued on or after this date, YYYY-MM-DD (default: 30 days ago) / 公告日がこの日以降（既定：30日前）

## Diagnostics

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

## Score history

- 2026-11-04: 72
- 2026-11-03: 71
- 2026-11-02: 71
- 2026-11-01: 70
- 2026-10-31: 70
- 2026-10-30: 69
- 2026-10-29: 69
- 2026-10-28: 68
- 2026-10-27: 68
- 2026-10-26: 67
- 2026-10-25: 67
- 2026-10-24: 67
- 2026-10-23: 66
- 2026-10-22: 66

## Common questions

### What is the Japan Public Data (法人番号・登録支援機関・官公需入札) MCP server?

Japan Public Data (法人番号・登録支援機関・官公需入札) is an MCP server listed in the public MCP registry as io.github.takaratomita/mcp-tools. Japan public data: corporate numbers, registered support organizations, government bid notices. This page covers its hosted endpoint (https://mcp-tools.takara0408103123.workers.dev/mcp).

### Is the Japan Public Data (法人番号・登録支援機関・官公需入札) MCP server safe to use?

Japan Public Data (法人番号・登録支援機関・官公需入札) scores 72 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 Japan Public Data (法人番号・登録支援機関・官公需入札) MCP server expose?

Japan Public Data (法人番号・登録支援機関・官公需入札) exposes 3 tools: lookup_corporate_number, search_support_orgs, search_local_govt_bids. Their descriptions and schemas cost roughly 654 tokens of context every time the server is loaded.

### Does the Japan Public Data (法人番号・登録支援機関・官公需入札) MCP server require authentication?

No. We connected to Japan Public Data (法人番号・登録支援機関・官公需入札) without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Japan Public Data (法人番号・登録支援機関・官公需入札) MCP server still maintained?

Japan Public Data (法人番号・登録支援機関・官公需入札) is still listed as active in the MCP registry. We last reached this channel on 4 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://mcp-tools.takara0408103123.workers.dev/mcp
- Repository: https://github.com/takaratomita/mcp-tools
- Changelog RSS feed: https://verifymcp.io/servers/takaratomita-mcp-tools/mcp-tools.xml
- Changelog JSON feed: https://verifymcp.io/servers/takaratomita-mcp-tools/mcp-tools.json
- HTML version of this page: https://verifymcp.io/servers/takaratomita-mcp-tools/mcp-tools