# Japan Corporate Number and Certifications (gBizINFO) (remote · jp-gbizinfo-production.mk-career-planning.workers.dev)

Which Japanese corporate numbers match this company name? gBizINFO (METI) relay with sources.

- Trust score: 67/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-18

## Components

- remote · `jp-gbizinfo-production.mk-career-planning.workers.dev`: 67/100 (this document), [markdown](https://verifymcp.io/servers/mk-career-planning-jp-gbizinfo/jp-gbizinfo-production.md), [page](https://verifymcp.io/servers/mk-career-planning-jp-gbizinfo/jp-gbizinfo-production)

## Channel facts

- Endpoint: `https://jp-gbizinfo-production.mk-career-planning.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 2026-10-18.

- **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 406, 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**: 76/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 709 tokens (~141/item across 5 items; 5 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 3/100
  - Stability observed for 1 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.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 5 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 5 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 Corporate Number and Certifications (gBizINFO) MCP server?

Japan Corporate Number and Certifications (gBizINFO) is a hosted endpoint at https://jp-gbizinfo-production.mk-career-planning.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 mk-career-planning-jp-gbizinfo 'https://jp-gbizinfo-production.mk-career-planning.workers.dev/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "mk-career-planning-jp-gbizinfo": {
      "url": "https://jp-gbizinfo-production.mk-career-planning.workers.dev/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "mk-career-planning-jp-gbizinfo": {
      "type": "http",
      "url": "https://jp-gbizinfo-production.mk-career-planning.workers.dev/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.mk-career-planning-jp-gbizinfo]
url = "https://jp-gbizinfo-production.mk-career-planning.workers.dev/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "mk-career-planning-jp-gbizinfo": {
      "type": "remote",
      "url": "https://jp-gbizinfo-production.mk-career-planning.workers.dev/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add mk-career-planning-jp-gbizinfo --url 'https://jp-gbizinfo-production.mk-career-planning.workers.dev/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  mk-career-planning-jp-gbizinfo:
    url: "https://jp-gbizinfo-production.mk-career-planning.workers.dev/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "mk-career-planning-jp-gbizinfo": {
      "Transport": "http",
      "Url": "https://jp-gbizinfo-production.mk-career-planning.workers.dev/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add mk-career-planning-jp-gbizinfo -t streamable-http -u 'https://jp-gbizinfo-production.mk-career-planning.workers.dev/mcp'
```

### Other

```json
{
  "mcpServers": {
    "mk-career-planning-jp-gbizinfo": {
      "type": "http",
      "url": "https://jp-gbizinfo-production.mk-career-planning.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.

### 2026-10-18 (score 67, 0)

- [functional improvement] Stability: unverified → 0.03

### 2026-10-17 (score 67)

First indexed and scored.

## MCP tools (5)

### `catalog` (~27 tokens)

Catalog: tools, prices and limits

List the tools of this server with prices, data sources, licensing, daily limits and data freshness.

Output parameters:

- `daily_limits` (object): Daily limits of paid calls (calls, usd, timezone) or a misconfiguration notice.
- `fetch_status_values` (object)
- `legal` (object)
- `paused` (object): Operator pause flags (true = paused).
- `payment` (object)
- `provenance` (array): Freshness receipts for every upstream source used.
- `server` (object)
- `terms` (string): URL of the terms of service.
- `tools` (array): Every tool of this server with its price.

### `gbizinfo_resolve_corporate_number` (~256 tokens)

Corporate number candidates for a company name (gBizINFO)

Which Japanese corporate numbers could this company name refer to? Searches gBizINFO (METI) by name (partial match), optionally within a prefecture, and returns every candidate with corporate number, name and address, marked exact_name or fuzzy_candidate. Never picks one for you: all candidate numbers are returned with total and truncated. Carries the gBizINFO source notice. Not an official result.

Input parameters:

- `address_hint` (string): Optional part of the address (e.g. 千代田区霞が関). Candidates whose published address contains it are listed first; no candidate is dropped.
- `limit` (integer): Number of candidates to detail, 1-50 (default 20). candidate_corporate_numbers always lists all of them (up to 200).
- `name` (string, required): Company name in Japanese or English, 2-100 characters, e.g. 経済産業省 or a company name. gBizINFO matches it as a partial name.
- `prefecture` (string): Optional prefecture code 01-47 (e.g. 13) or name (Tokyo or 東京都) to narrow the search to head offices in that prefecture.

Output parameters:

- `answered_at` (string)
- `attribution` (object): Required source notice (gBizINFO terms of use; notice_ja is the required wording, notice_ja_with_date adds the retrieval date) and the statement that this is processed by MK Career Planning and is no…
- `candidate_corporate_numbers` (array): Every candidate's corporate number, including those not detailed in candidates (never collapsed to one).
- `candidates` (array)
- `exact_name_matches` (number)
- `legal_notice` (string)
- `limitations` (array)
- `provenance` (array): Freshness receipts for every upstream source used.
- `query` (object)
- `retrieved_at` (string|null)
- `returned` (number)
- `status` (string): candidates_found / no_candidates_found / unknown (see unknown_reason). A failure is never reported as no candidates.
- `status_as_of` (string|null)
- `terms` (string): URL of the terms of service.
- `total` (number|null): Number of candidates gBizINFO returned (a lower bound when total_is_lower_bound).
- `total_is_lower_bound` (boolean)
- `truncated` (boolean)
- `unknown_reason`

### `gbizinfo_company_basic` (~143 tokens)

Basic information for a corporate number (gBizINFO)

What does gBizINFO (METI) publish as basic information for this Japanese corporate number? Returns the name, kana, English name, address and the closure date and cause when the record states them (from the National Tax Agency source as relayed by gBizINFO), with gBizINFO's last_acquisition_date as status_as_of. Representative names are not returned. Carries the gBizINFO source notice. Not an official result.

Input parameters:

- `corporate_number` (string, required): 13-digit Japanese corporate number (houjin bangou), e.g. 4000012090001. The check digit is verified; nothing is requested for an invalid number.

Output parameters:

- `answered_at` (string)
- `attribution` (object): Required source notice (gBizINFO terms of use; notice_ja is the required wording, notice_ja_with_date adds the retrieval date) and the statement that this is processed by MK Career Planning and is no…
- `closure`
- `last_observed_at` (string|null)
- `legal_notice` (string)
- `limitations` (array)
- `match_basis` (string)
- `matched_records` (array)
- `provenance` (array): Freshness receipts for every upstream source used.
- `query` (object)
- `record`
- `record_state`
- `registry` (string)
- `retrieved_at` (string|null)
- `source_url` (string)
- `status` (string)
- `status_as_of` (string|null): gBizINFO's last_acquisition_date (when gBizINFO last took the item from its source), as published.
- `terms` (string): URL of the terms of service.
- `unknown_reason` (string|null)

### `gbizinfo_certifications` (~200 tokens)

Notifications and certifications by corporate number (gBizINFO)

Which notifications and certifications (todokede / nintei, e.g. FSA registrations) does gBizINFO (METI) publish for this Japanese corporate number? Returns the rows as published with ministry, title and date. Zero rows is unknown (source_not_exhaustive), never none: gBizINFO does not hold every ministry's information. Carries the gBizINFO source notice. Not an official result.

Input parameters:

- `corporate_number` (string, required): 13-digit Japanese corporate number (houjin bangou), e.g. 4000012090001. The check digit is verified; nothing is requested for an invalid number.
- `limit` (integer): Number of rows to return, 1-100 (default 100). total and truncated tell how many matched.
- `ministry` (string): Optional filter on the ministry as published (government_departments), e.g. 金融庁 for the Financial Services Agency.

Output parameters:

- `answered_at` (string)
- `attribution` (object): Required source notice (gBizINFO terms of use; notice_ja is the required wording, notice_ja_with_date adds the retrieval date) and the statement that this is processed by MK Career Planning and is no…
- `company`
- `last_observed_at` (string|null)
- `legal_notice` (string)
- `limitations` (array)
- `match_basis` (string)
- `matched_records` (array)
- `provenance` (array): Freshness receipts for every upstream source used.
- `query` (object)
- `registry` (string)
- `retrieved_at` (string|null)
- `returned` (number)
- `source_url` (string)
- `status` (string)
- `status_as_of` (string|null): gBizINFO's last_acquisition_date (when gBizINFO last took the item from its source), as published.
- `terms` (string): URL of the terms of service.
- `total` (number|null)
- `truncated` (boolean)
- `unknown_reason` (string|null)

### `get_receipt` (~83 tokens)

Get receipt of a paid call

Re-fetch the stored result of a settled paid call by its receipt_id, for when the response was lost after payment. Free. Unknown or unsettled receipt ids return RECEIPT_NOT_FOUND. Results are kept for 90 days after settlement.

Input parameters:

- `receipt_id` (string, required): The receipt_id returned with a paid result ("rcpt_" + 64 hex characters).

Output parameters:

- `payment` (object)
- `provenance` (array): Freshness receipts for every upstream source used.
- `receipt_id` (string): Receipt id of the settled paid call ("rcpt_" + 64 hex). Use with get_receipt.
- `result`: The stored result, exactly as returned by the paid call.
- `settled_at` (string|null)
- `terms` (string): URL of the terms of service.
- `tool` (string): Name of the paid tool that produced the result.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/mk-career-planning-jp-gbizinfo/jp-gbizinfo-production#diagnostics

## Score history

- 2026-10-18: 67
- 2026-10-17: 67

## Common questions

### What is the Japan Corporate Number and Certifications (gBizINFO) MCP server?

Japan Corporate Number and Certifications (gBizINFO) is an MCP server listed in the public MCP registry as io.github.mk-career-planning/jp-gbizinfo. Which Japanese corporate numbers match this company name? gBizINFO (METI) relay with sources. This page covers its hosted endpoint (https://jp-gbizinfo-production.mk-career-planning.workers.dev/mcp).

### Is the Japan Corporate Number and Certifications (gBizINFO) MCP server safe to use?

Japan Corporate Number and Certifications (gBizINFO) scores 67 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 Corporate Number and Certifications (gBizINFO) MCP server expose?

Japan Corporate Number and Certifications (gBizINFO) exposes 5 tools: catalog, gbizinfo_resolve_corporate_number, gbizinfo_company_basic, gbizinfo_certifications, get_receipt. Their descriptions and schemas cost roughly 709 tokens of context every time the server is loaded.

### Does the Japan Corporate Number and Certifications (gBizINFO) MCP server require authentication?

No. We connected to Japan Corporate Number and Certifications (gBizINFO) without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Japan Corporate Number and Certifications (gBizINFO) MCP server still maintained?

Japan Corporate Number and Certifications (gBizINFO) is still listed as active in the MCP registry. We last reached this channel on 18 October 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://jp-gbizinfo-production.mk-career-planning.workers.dev/mcp
- Website: https://jp-gbizinfo-production.mk-career-planning.workers.dev/llms.txt
- Changelog RSS feed: https://verifymcp.io/servers/mk-career-planning-jp-gbizinfo/jp-gbizinfo-production.xml
- Changelog JSON feed: https://verifymcp.io/servers/mk-career-planning-jp-gbizinfo/jp-gbizinfo-production.json
- HTML version of this page: https://verifymcp.io/servers/mk-career-planning-jp-gbizinfo/jp-gbizinfo-production