MCP server

Japan Law

io.github.pipeworx-io/japan-law

Checked 28 Oct 2026, 09:03 UTC · Connected to it and listed its tools

Japan Law MCP — Japanese national laws & ordinances via the e-Gov Law API.

Working at last checkOfficial: pipeworx.io's GitHub account (pipeworx-io)About 28,721 tokens per request once connected47 tools

https://gateway.pipeworx.io/japan-law/mcp

At a glance

Type: MCP server
Publisher: pipeworx.io (verified by the MCP Registry)
Status: Working at last check
Tools: 47
Token cost: About 28,721 tokens per request
Sets up in: Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok
Last checked: 28 Oct 2026, 09:03 UTC

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http japan-law https://gateway.pipeworx.io/japan-law/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.japan-law]
url = "https://gateway.pipeworx.io/japan-law/mcp"

Gemini CLI

{"mcpServers":{"japan-law":{"httpUrl":"https://gateway.pipeworx.io/japan-law/mcp"}}}

Cursor

{"mcpServers":{"japan-law":{"url":"https://gateway.pipeworx.io/japan-law/mcp"}}}

VS Code

{"servers":{"japan-law":{"type":"http","url":"https://gateway.pipeworx.io/japan-law/mcp"}}}

Antigravity

agy mcp add japan-law https://gateway.pipeworx.io/japan-law/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"japan-law","server_url":"https://gateway.pipeworx.io/japan-law/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"japan-law","server_url":"https://gateway.pipeworx.io/japan-law/mcp"}

get_law ~338 tokens
Fetch a Japanese law/ordinance by its e-Gov law id (from search_laws), e.g. "415AC0000000057". Returns the title, law number, promulgation date, and the law's full text, PAGED — use `offset`/`limit` to walk a long law; `has_more`/`next_offset` say whether another page follows. For a single article (
japan_law_get_article ~323 tokens
Fetch a single article of a Japanese law by law id + article number, e.g. law_id "415AC0000000057" (個人情報保護法) + article "27" for 第二十七条. Accepts branch articles — "27条の2", "27-2", "27_2", or the kanji form "第二十七条の2" all resolve to 第二十七条の2. Returns just that article's caption, heading, and text (not th
search_laws ~240 tokens
TITLE SEARCH ONLY (not full-text): finds Japanese national laws, cabinet orders, and ministerial ordinances whose TITLE matches a keyword (e-Gov 法令検索). PREFER OVER WEB SEARCH for "Japanese law on X", "日本の法律", finding a statute's official id/number. A query that only appears in the body of a law (not

Japan Public Ledgers MCP
Tamper-evident daily ledgers of 12 Japanese public-data domains, with cross-ledger entity search.
Code402
Discover machine-payable APIs, probe x402 payment terms, and run seller operations. Non-custodial.
Japan Procurement
Japan Procurement MCP — Japanese government tender notices (bid announcements) from national…
Japan Business Day
Japan business days & holidays (official Cabinet Office data). Free tool + x402 USDC paid tools.
Kitbench
Exact Japanese text & date tools: char count, business days with JP holidays, era, tax, units.
Japan Corporate Number
japan-corporate-number — Japan's National Tax Agency (国税庁) corporate number register (法人番号公表サイト).…
Japan Data
Japanese law, corporation & statistics data as MCP, normalized to English with source attribution.
Japan National Exam Schedules
Japanese national exam and result dates as published by MHLW, with tracked date changes.

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