# Japanese Tax Law

> Use this tool when you need to access and retrieve Japanese tax laws, statutes, and tribunal rulings for research, compliance, or legal purposes. It solves problems related to navigating complex tax regulations, providing search and retrieval functionality for tax statutes, administrative circulars, and tribunal cases. It takes keywords, abbreviations, or specific tax categories as input and returns relevant tax information via a user interface or REST API.

Canonical page: https://skillsregistry.net/skills/kentaroajisaka-japanese-tax-law  
JSON: https://api.skillsregistry.net/v1/skills/kentaroajisaka-japanese-tax-law

## Description

Integrates with the Japanese government e-Gov Law API and National Tax Agency databases to provide search and retrieval of tax statutes, administrative circulars (tsutatsu), and tax tribunal rulings. Covers 24 preset tax laws, 17 administrative circulars, and 1,950 published tribunal cases across 13 tax categories. Supports abbreviation-based lookups and Shift_JIS encoding for legacy government sites. Also provides a REST API for use with Custom GPTs and other AI tools.

## Trust

- **Trust score (0–1):** 0.92
- **Verification tier:** verified
- **Last scanned:** 2026-09-28

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** database
- **Updated:** 2026-09-28

## Source

- **Source listing:** [PulseMCP](https://www.pulsemcp.com/servers/kentaroajisaka-japanese-tax-law)
- **Repository:** <https://github.com/kentaroajisaka/tax-law-mcp>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "kentaroajisaka-japanese-tax-law"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/kentaroajisaka-japanese-tax-law` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/kentaroajisaka-japanese-tax-law/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt