Full-text search of all current Japanese laws (official e-Gov data), down to exact article text.
Quick Install
Automated & IDE SetupCopy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.
Manual Client & Custom JSON ConfigExpand JSON ▾
Client Config & Setup
Remote HTTPChoose your client or environment
Target File:
💡 Paste the JSON block into your client's configuration file under mcpServers, then restart the application.
Capabilities & Tool Schemas (3)
Inspect callable tools, capabilities, and parameters exposed to AI agents by Japan Law Search.
search_lawsFull-text search across the body text of every current law (or search by law title). Returns matched snippets, law categories, promulgation dates, and official links.
get_law_structureTable of contents for any law: chapters, sections, and article headings. Long statutes (e.g. the Civil Code with 1,000+ articles) are automatically compressed to chapter level to save tokens.
get_law_articleRetrieve the exact text of any article. Accepts flexible references — `3`, `第3条`, `第三条の二`, `3の2` — and normalizes kanji numerals automatically. Output preserves paragraph and item numbering as clean plain text.
Documentation Overview
Japan Law Search MCP — 日本の法令検索
Give your AI agent authoritative access to all ~10,000 Japanese laws and regulations.
This MCP server searches and retrieves the full text of current Japanese legislation — acts, cabinet orders, and ministerial ordinances — from the official e-Gov Laws API (Government of Japan). Built for legal-tech, compliance, HR, and contract-review AI agents working with Japanese law.
Why this server?
Japanese statutes are published as deeply nested XML with kanji numerals, era-based dates, and no convenient full-text API surface for LLMs. This server turns that into three clean, token-efficient tools.
Tools
search_laws
Full-text search across the body text of every current law (or search by law title). Returns matched snippets, law categories, promulgation dates, and official links.
get_law_structure
Table of contents for any law: chapters, sections, and article headings. Long statutes (e.g. the Civil Code with 1,000+ articles) are automatically compressed to chapter level to save tokens.
get_law_article
Retrieve the exact text of any article. Accepts flexible references — 3, 第3条, 第三条の二, 3の2 — and normalizes kanji numerals automatically. Output preserves paragraph and item numbering as clean plain text.
Example queries your agent can now answer
- 「電子署名法で電子署名が有効とされる条件は？」→ finds Article 3 and quotes it verbatim
- "What does the Labor Standards Act say about overtime limits? Quote the exact article."
- 「個人情報保護法の目次を見せて、第三者提供に関する条文を特定して」
Data source & freshness
Official e-Gov Laws API v2 (Government of Japan), fetched live on every call — always the currently enforced revision, including amendments enforced this month.
Pricing
Pay per tool call. One search, one table of contents, or one article retrieval = one event. No subscription, no minimum.
日本語
日本の現行法令（約1万件）を全文検索し、条文を取得できるMCPサーバーです。巨大な法令XMLをAIが読みやすいテキストに整形し、「第三条の二」等の表記ゆらぎも自動吸収します。リーガルテック・コンプライアンス・労務系AIに最適です。
Get started
This is a hosted (remote) MCP server, available on Apify Store:
👉 https://apify.com/e-asakura/japan-law-search-mcp
The store page includes setup instructions for Claude, ChatGPT, Cursor, and any MCP-compatible client. Pay-as-you-go: $0.02 per tool call, no subscription.
Built by Edward Asakura — Japanese data infrastructure for AI agents. Part of the SEKISHO series: subsidies / laws / parliament.
Related MCP Servers
Adoption & maintenance
Factual signals from GitHub, npm, and our automated checks — not a rating.
Last commit
1mo ago
Most recent push to the default branch.
Tools exposed
3
Callable tools this server registers over MCP.
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Frequently Asked Questions about Japan Law Search
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CategoryLegal
48Quality signal: Fair · 48/100How this signal is calculated ▾
Server availabilityNot measured
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Verified ownership10/20
Documentation & tools24/30
Adoption & activity2/15
Community engagement0/10
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