# io.github.KojimaHyui01/ja-normalize (npm · ja-normalize-mcp)

Holidays/business days for 200+ countries; Japanese address, name, bank and company normalization.

- Trust score: 70/100 (medium)
- Change this week: +18
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-20

## Components

- npm · `ja-normalize-mcp`: 70/100 (this document), [markdown](https://verifymcp.io/servers/kojimahyui01-ja-normalize/ja-normalize-mcp.md), [page](https://verifymcp.io/servers/kojimahyui01-ja-normalize/ja-normalize-mcp)

## Channel facts

- Registry: `npm`
- Package: `ja-normalize-mcp`
- Version: `0.1.2`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, 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 2026-09-20.

- **Supply Chain Security**: 99/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - No install/post-install scripts declared.
  - 31 of 114 dependencies flagged as unhealthy.
- **Provenance & Transparency**: 45/100
  - Source repository is publicly reachable at the declared URL.
  - Provenance check failed: no build-provenance attestation is published.
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 7 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 69/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 728 tokens (~60/item across 12 items; 12 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 23/100
  - Stability observed for 7 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 72/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 15% 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 12 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 12 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 io.github.KojimaHyui01/ja-normalize MCP server?

io.github.KojimaHyui01/ja-normalize runs locally as an npm package, launched with npx -y ja-normalize-mcp. 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 kojimahyui01-ja-normalize -- npx -y ja-normalize-mcp
```

### Cursor

```json
{
  "mcpServers": {
    "kojimahyui01-ja-normalize": {
      "command": "npx",
      "args": [
        "-y",
        "ja-normalize-mcp"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "kojimahyui01-ja-normalize": {
      "command": "npx",
      "args": [
        "-y",
        "ja-normalize-mcp"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add kojimahyui01-ja-normalize -- npx -y ja-normalize-mcp
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "kojimahyui01-ja-normalize": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "ja-normalize-mcp"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add kojimahyui01-ja-normalize --command npx --arg -y --arg ja-normalize-mcp
```

### Hermes

```yaml
mcp_servers:
  kojimahyui01-ja-normalize:
    command: "npx"
    args: ["-y", "ja-normalize-mcp"]
```

### Netclaw

```json
{
  "McpServers": {
    "kojimahyui01-ja-normalize": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "ja-normalize-mcp"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add kojimahyui01-ja-normalize -t stdio -c npx -a -y ja-normalize-mcp
```

### Other

```json
{
  "mcpServers": {
    "kojimahyui01-ja-normalize": {
      "command": "npx",
      "args": [
        "-y",
        "ja-normalize-mcp"
      ]
    }
  }
}
```

## 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.

### 2026-09-20 (score 70, +3)

- [functional improvement] Stability: unverified → 0.23

### 2026-09-14 (score 67, +15)

- [security improvement] Malware scan: unverified → pass

### 2026-09-13 (score 52)

First indexed and scored.

## MCP tools (12)

### `holidays` (~94 tokens)

Public holidays (200+ countries)

Public/bank/school holidays for a country and year, with optional region (US-CA → region=CA) and type filter.

Input parameters:

- `country` (string, required): ISO 3166-1 alpha-2, e.g. US, DE, JP
- `region` (string)
- `types` (string): comma list: public,bank,school,optional,observance
- `year` (integer, required)

### `business_day` (~105 tokens)

Business-day calculator (any country)

Is a date a business day in a country? Add/subtract N business days honouring holidays and the local weekend (e.g. Fri-Sat in Saudi Arabia).

Input parameters:

- `add` (integer)
- `calendar` (string)
- `country` (string, required)
- `date` (string): YYYY-MM-DD, default today
- `region` (string)
- `weekend` (string): override, weekday numbers 0=Sun e.g. 5,6

### `holiday_countries` (~34 tokens)

List supported countries / regions (free)

Lists supported country codes, or the regions of one country when `country` is given.

Input parameters:

- `country` (string)

### `jp_business_day` (~67 tokens)

Japanese business-day calculator (official 内閣府 data)

Japanese holidays incl. 振替休日/国民の休日; add N business days; 月末営業日; calendar=bank also closes Dec 31–Jan 3.

Input parameters:

- `add` (integer)
- `calendar` (string)
- `date` (string)

### `jp_bank_resolve` (~69 tokens)

Japanese bank / branch name → codes

Fuzzy-resolve a bank (銀行/信金/信組/労金/JA) and optional branch name to 金融機関コード and 支店コード, with half-width kana for 全銀 files.

Input parameters:

- `bank` (string, required)
- `branch` (string)

### `jp_bank_lookup` (~42 tokens)

Japanese bank / branch by code

Exact lookup of a 4-digit bank code (+ optional 3-digit branch code).

Input parameters:

- `bankCode` (string, required)
- `branchCode` (string)

### `jp_name_parse` (~64 tokens)

Japanese personal name → family/given, readings, passport romaji

Splits a kanji full name, returns ranked reading candidates with confidence and 外務省 passport romaji. Pass `kana` ("<family> <given>") when known for a deterministic result.

Input parameters:

- `kana` (string)
- `name` (string, required)

### `jp_name_romaji` (~58 tokens)

Kana → Hepburn romaji (passport rules)

Deterministic romanization: passport form (SATO, ONO, NAMBA), OH-style, macron and strict forms. Input "さとう ゆうこ" or a single token.

Input parameters:

- `kana` (string, required)

### `jp_address_normalize` (~49 tokens)

Japanese address normalization + coordinates

Normalizes any Japanese address notation to pref/city/town/block against the Address Base Registry and returns WGS84 coordinates.

Input parameters:

- `address` (string, required)
- `level` (integer)

### `jp_text_normalize` (~46 tokens)

Japanese business text normalization

Full-width → half-width, 和暦 → ISO dates, extracts phone numbers (E.164), postal codes and emails from free text.

Input parameters:

- `text` (string, required)

### `jp_company_resolve` (~45 tokens)

Japanese company name → 法人番号 (NTA registry)

Fuzzy company-name or 13-digit corporate-number lookup with registered address and invoice-number format.

Input parameters:

- `prefectureCode` (string)
- `query` (string, required)

### `jp_crypto_ticker` (~55 tokens)

JPY crypto prices + Japan premium

BTC/ETH/XRP prices on bitFlyer, Coincheck, GMO Coin and bitbank, cross-exchange median, USD reference, USD/JPY and the Japan premium vs USD.

Input parameters:

- `symbol` (string)

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/kojimahyui01-ja-normalize/ja-normalize-mcp#diagnostics

## Score history

- 2026-09-20: 70
- 2026-09-19: 67
- 2026-09-18: 67
- 2026-09-17: 67
- 2026-09-16: 67
- 2026-09-15: 67
- 2026-09-14: 67
- 2026-09-13: 52

## Common questions

### What is the io.github.KojimaHyui01/ja-normalize MCP server?

io.github.KojimaHyui01/ja-normalize is an MCP server listed in the public MCP registry as io.github.KojimaHyui01/ja-normalize. Holidays/business days for 200+ countries; Japanese address, name, bank and company normalization. This page covers its npm package (ja-normalize-mcp).

### Is the io.github.KojimaHyui01/ja-normalize MCP server safe to use?

io.github.KojimaHyui01/ja-normalize scores 70 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 20 September 2026. It declares no install or post-install scripts. 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 io.github.KojimaHyui01/ja-normalize MCP server expose?

io.github.KojimaHyui01/ja-normalize exposes 12 tools: holidays, business_day, holiday_countries, jp_business_day, jp_bank_resolve, and 7 more. Their descriptions and schemas cost roughly 728 tokens of context every time the server is loaded.

### Is the io.github.KojimaHyui01/ja-normalize MCP server still maintained?

io.github.KojimaHyui01/ja-normalize 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.

### What licence is the io.github.KojimaHyui01/ja-normalize MCP server under?

io.github.KojimaHyui01/ja-normalize declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

## Links

- npm package: https://www.npmjs.com/package/ja-normalize-mcp
- Socket report: https://socket.dev/npm/package/ja-normalize-mcp
- Repository: https://github.com/KojimaHyui01/x402-ja-api
- Changelog RSS feed: https://verifymcp.io/servers/kojimahyui01-ja-normalize/ja-normalize-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/kojimahyui01-ja-normalize/ja-normalize-mcp.json
- HTML version of this page: https://verifymcp.io/servers/kojimahyui01-ja-normalize/ja-normalize-mcp