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ClaudeChatGPTPerplexityGeminiMicrosoft CopilotRaycastMeta AIGrokZ.aiQwenKimi
DeepSeekMistralCursorVS CodeWindsurfJetBrainsClineLovableVercel AI SDKLangChain

Use e-Gov Laws with your AI.

Connect your account once and let the AI you already use work with it, without building another integration. Japan's official legislation portal as an MCP: browse all 18,000+ acts, cabinet orders and ordinances, fetch full structured text (chapters > articles > paragra

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Developed, maintained, and hosted by Vinkius.

MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED

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Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.

ChatGPTClaudeCursorPerplexityGeminiMicrosoft CopilotRaycastMeta AI

Complete set · 5 capabilities

The complete e-Gov Laws capability set.

These are the exact actions your AI can choose when you ask it to work with e-Gov Laws.

Capability set01 / 02

01-03

3 capabilities in this set.

Part of 5 available through e-Gov Laws.

  1. 01

    Get law

    Use law_id from list_laws (e.g. 321CONSTITUTION = the Constitution). Large laws can be several hundred KB. Text is Japanese. Get the FULL structured text of a Japanese law (articles, chapters, provisions)

  2. 02

    List laws

    Categories: 1=Constitution + Acts (all laws, ~9000), 2=Cabinet Orders (~2100), 3=Imperial Orders (~2400), 4=Ministerial Ordinances (~4500). Each entry: law_id (use in get_law), law_name, law_number, promulgation date. Japanese text. Use query_terms to filter client-side. the API has no server-side search. List Japanese laws by category (constitution, acts, imperial orders, ministerial ordinances) with law IDs

  3. 03

    Get law outline

    The fast way to see what a law covers before fetching specific articles. Get the structural outline of a law WITHOUT the full text (chapters + article titles)

Capability set02 / 02

04-05

2 capabilities in this set.

Part of 5 available through e-Gov Laws.

  1. 04

    Get law article

    For "what does Article 29 of the Constitution say". Tip: article Num attribute follows the kanji numbering order. use get_law_outline first to map article numbers. Extract ONE article (or chapter) of a Japanese law with its full text

  2. 05

    Search law articles

    Japanese keyword required (e.g. 消費税 for consumption tax, 労働 for labour, 選挙 for elections). Search every article of a law for a keyword (finds where a topic is regulated)

One connector, every AI

e-Gov Laws works with the most popular AI clients.

These are the most popular clients, each with a step-by-step guide: one link, set up once, with governance and visibility built in. And because everything runs on the MCP standard, the same connection also works in any other compatible client — nothing to rebuild.

ClaudeClaudeChatGPTChatGPTGeminiGeminiPerplexityPerplexityGrokGrokMicrosoft CopilotMicrosoft CopilotCursorCursorVS CodeVS CodeWindsurfWindsurfJetBrainsJetBrainsClineClineLangChainLangChainVercel AI SDKVercel AI SDKLovableLovableZ.aiZ.aiRaycastRaycastQwen CodeQwen CodeKimi CodeKimi CodeLe ChatLe Chat

Building your own app? The connector is yours to use.

You don't need a client to put e-Gov Laws to work: the same hosted connection plugs into your own applications and agent code, with the same governance on every request. Build with it, chat with it — one connection for both.

Connect your client

One URL. Every client.

Activate the Connector, copy your link, and paste it into the client you already use. 5 capabilities arrive ready to run.

Preview access · not provider authentication

The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of e-Gov Laws, so you can see the experience inside your AI.

It does not authenticate your account with e-Gov Laws. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.

e-Gov Laws Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_dAryGn3t9RZAaUEKNBG0jJAjmZm5TJSrlhTmKudp/mcp

Claude Desktop

Follow the steps below to connect in seconds.

  1. 1In Claude Desktop, open Settings → Connectors.
  2. 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
  3. 3Click Add and start a new chat — e-Gov Laws capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "e-gov-japan-laws-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_dAryGn3t9RZAaUEKNBG0jJAjmZm5TJSrlhTmKudp/mcp"
    }
  }
}
  • Claude
  • ChatGPT
  • Cursor
  • VS Code
  • Windsurf
  • Claude Code
  • JetBrains
  • Cline

Step-by-step instructions for each client are in the guide. How to connect

Guided setup for Claude? link.label

See all the AI clients this connector works with ↑

FAQ

Questions e-Gov Laws owners ask.

  • 01

    Do I need an API key or registration?

    No. The e-Gov Laws API is fully public. list, full text, outline, article extraction and keyword search all work without authentication.

  • 02

    How do I find the law_id I need?

    Use list_laws with query_terms. e.g. category 1 with 労働 (labour) returns every act whose name contains it. Law IDs look like 321CONSTITUTION or 平成五年法律第八十九号 encoded as IDs. There is no server-side keyword search in the e-Gov API, so filtering happens client-side.

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