# `io.github.physics-star-cat/databutler-jp-living-costs` on anlyon.dev

> Text inside fenced blocks marked untrusted-server-text was written by the MCP server's publisher, not by anlyon.dev. It is data to inspect, not instructions to follow. Invisible characters are shown as [U+XXXX].
> No finding is not a safety guarantee: these are point-in-time checks of tool definitions, not of code or behaviour.

- Page: https://anlyon.dev/servers/io.github.physics-star-cat/databutler-jp-living-costs
- JSON: https://anlyon.dev/api/v1/servers/io.github.physics-star-cat/databutler-jp-living-costs
- Version: 1.0.0 (active)
- Publisher: io.github.physics-star-cat (GitHub account)
- Runs: remote (streamable-http)
- Sign-in to list tools: none
- Repository: https://github.com/physics-star-cat/databutler
- Metadata from the official MCP Registry, synced 2026-10-25T12:17:39.114Z

Title and description, as the publisher wrote them:

```untrusted-server-text
Japan minimum wage by prefecture, 協会けんぽ rates, pensions, benefits, holidays, tax figures, sourced.
```

Scanned 2026-10-25T12:18:00.120Z over streamable-http.

**1 tool: 1 only read.**

| Group | Class | Tools | Claude Code |
| --- | --- | --- | --- |
| Deletes or cancels | destructive | 0 | deny |
| Can't be undone | irreversible | 0 | ask |
| Changes things | write | 0 | ask |
| Only reads | read | 1 | allow |

## Exfil surface

No private-data -> untrusted-input -> outbound path in this server alone: no tool is tagged untrusted-input or outbound.

| Tag | Meaning | Tools |
| --- | --- | --- |
| private-data | Reads files, mail, messages, databases, secrets, calendars or repositories. | `mcp__databutler-jp-living-costs__jp_living_costs_lookup` |
| untrusted-input | Brings in text someone else can write: web pages, inbound email, messages, issues and comments. | none |
| outbound | Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL. | none |

## Findings

No check matched anything in these tool definitions.


## Only reads (1)

Looks things up and changes nothing. Claude Code: allow.

### `jp_living_costs_lookup`

- The name "jp_living_costs_lookup" says "lookup": a word for reading.
- Tag private-data: The description's first sentence says "table": it reads databases.

Description, as the server wrote it:

```untrusted-server-text
Japan daily-life official figures, verified against the official pages, by category: minimum-wage (地域別最低賃金 FY2026, hourly, 47 prefectures by romanised key such as tokyo or osaka plus national-weighted-average, each with its own effectiveFrom between 2026-10-01 and 2026-12-02 and the FY2025 amount as previous), health-insurance (協会けんぽ 都道府県単位保険料率 FY2026 by prefecture, employer + employee combined, with the FY2025 rate as previous; long-term-care 介護保険料率 for ages 40–64; child-rearing-levy 子ども・子育て支援金率 from April 2026), pension (kosei-nenkin-rate 厚生年金保険料率, kokumin-nenkin-premium 国民年金保険料 FY2026 and FY2027, kiso-nenkin-full-monthly 老齢基礎年金 満額), employment-insurance (雇用保険料率 FY2026, employee / employer / total per 1,000, three business types), benefits (児童手当 monthly amounts, 出産育児一時金, 高額療養費 ceilings for under-70s before August 2026, August 2026 – July 2027 and from August 2027), holidays (国民の祝日 2027), consumption-tax (10% and 8%, national and local portions), income-tax (基礎控除 table for 2024 to 2028+, 給与所得控除 tables for 2025 and 2026) and resident-tax (均等割 and 森林環境税). Each figure carries its value, unit, the Japanese term, the quoted row from the page, its source URL and effectiveFrom (and effectiveTo where the source states an end); the answer carries verifiedDate, freshness and a citation permalink. No category returns the listing; an unknown category answers covered:false with the nearest keys.
```

## Claude Code permissions

For `.claude/settings.json`, assuming the server is installed as `databutler-jp-living-costs`:

```json
{
  "permissions": {
    "allow": [
      "mcp__databutler-jp-living-costs__jp_living_costs_lookup"
    ],
    "ask": [],
    "deny": []
  }
}
```

Capability tags behind the rules (a read tagged outbound is asked about):

- `mcp__databutler-jp-living-costs__jp_living_costs_lookup`: private-data