How many laws are available in this MCP?

The MCP provides access to over 18,000 entries, including approximately 9,000 acts, 2,100 cabinet orders, 2,400 imperial orders, and 4,500 ministerial ordinances.

Is the legal text in English?

The text provided by the official e-Gov source is in Japanese. Your AI client will need to handle the translation or analysis of the Japanese text.

Do I need an API key for e-Gov?

No, this MCP is keyless and managed by Vinkius, so you can use it immediately after connecting your client.

Can I search for specific keywords within a law?

Yes, you can use the search_law_articles capability to find specific Japanese keywords within the articles of a law.

Which AI clients can use this MCP?

Any MCP-compatible client, including Claude, Cursor, Windsurf, and VS Code, can use this MCP.

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.

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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Connect E Gov Japan Laws to ChatGPT, Claude and Gemini

Set it up once and it works in ChatGPT, Claude, Cursor, and any other client you love. It all runs safely in the background, so you can relax and focus on what really matters. Direct access to the official Japanese legal database.

Ask AI about this Connector

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.

Your AI does the work. We keep it safe and sound.

No other AI tool gives you this. Your workflow runs in the client you already love, your account stays protected, and you decide what the agent can and cannot do. It is the whole reason to make the switch.

Each Connector lives inside our infrastructure, the same place where your workflow runs. The three things below are already part of it, working quietly in the background so you never have to think about them. Nothing to add, nothing to set up, nothing to worry about.

V8 Isolate01

Each Connector runs inside its own sealed environment.

Each Connector runs inside its own sealed V8 runtime — no access to your files, your system, or other servers. A Connector never sees past its own request.

Kill Switch02

One switch stops every agent. Instantly.

One action deactivates every Connector, revokes every token, and ends every session at once. AI Governance keeps the record.

FinOps per User03

Spending limits that pause instead of surprise.

Every user keeps their own connections and credentials, isolated from everyone else. Anything that would cross your spending limit is held for your approval, not billed.

Three controls, built into the layer your AI connects through.

Curated set · 5 capabilities

We ship only the actions that matter.

Capability set01 / 02

01-03

3 capabilities in this set.

Part of 5 available through e-Gov Laws.

01
Get law
This capability retrieves the full structured text of a specific Japanese law using its unique law ID. It returns the complete hierarchy of articles, chapters, and provisions.
02
List laws
This capability provides a list of Japanese laws categorized by type, such as Acts, Cabinet Orders, or Ministerial Ordinances. It includes law IDs, names, and promulgation dates.
03
Get law outline
This capability fetches the structural outline of a law, including chapters and article titles, without the full body text. It is the fastest way to see what a law covers.

Capability set02 / 02

04-05

2 capabilities in this set.

Part of 5 available through e-Gov Laws.

04
Get law article
This capability extracts the specific text of a single article or chapter from a Japanese law. It is useful for answering direct questions about specific legal provisions.
05
Search law articles
This capability searches through all articles of a law for a specific Japanese keyword. It helps identify exactly where a topic is regulated within a piece of legislation.

Real work

What teams actually run

Compliance Auditing

An agent checks a company's operations against the latest Ministerial Ordinances.

Legal Research

A researcher uses keyword searches to find all mentions of a specific regulation in a large act.

Translation Verification

A translator compares their work against the official Japanese text of a law.

Automated Legal Summaries

An AI client reads a law's outline to generate a high-level summary of its contents.

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.

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.

Observed, not estimated

867ms average. Fast in production.

e-Gov Laws is checked daily against the live service.

Daily averagePeak 1036ms

Oct 3Today

Fastest day: 738ms
Slowest day: 1036ms
14-day trend: Stable+1%

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.

1In Claude Desktop, open Settings → Connectors.
2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
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? Set up e-Gov Laws in Claude and other AIs

See all the AI clients this connector works with ↑

Who it's for

Built for the work e-Gov Laws owners hand off.

This MCP is built for professionals who need to interact with Japanese legislation through an AI interface.

01
Legal-tech developers
Building applications that require real-time, structured Japanese legal data.
02
Compliance officers
Checking company policies against current Japanese acts and ordinances.
03
Researchers and Journalists
Verifying specific legal provisions or searching for regulatory trends in Japan.

FAQ

Questions e-Gov Laws owners ask.

01
How many laws are available in this MCP?
The MCP provides access to over 18,000 entries, including approximately 9,000 acts, 2,100 cabinet orders, 2,400 imperial orders, and 4,500 ministerial ordinances.
02
Is the legal text in English?
The text provided by the official e-Gov source is in Japanese. Your AI client will need to handle the translation or analysis of the Japanese text.
03
Do I need an API key for e-Gov?
No, this MCP is keyless and managed by Vinkius, so you can use it immediately after connecting your client.
04
Can I search for specific keywords within a law?
Yes, you can use the search_law_articles capability to find specific Japanese keywords within the articles of a law.
05
Which AI clients can use this MCP?
Any MCP-compatible client, including Claude, Cursor, Windsurf, and VS Code, can use this MCP.
06
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.
07
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.

Explore

More in Government Public Data

Connect e-Gov Laws to Claude, Cursor, ChatGPT & more

Your AI does the work. We keep it safe and sound.

Each Connector runs inside its own sealed environment.

One switch stops every agent. Instantly.

Spending limits that pause instead of surprise.

We ship only the actions that matter.

01-03

Get law

List laws

Get law outline

04-05

Get law article

Search law articles

What teams actually run

Compliance Auditing

Legal Research

Translation Verification

Automated Legal Summaries

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

e-Gov Laws Connector

Claude Desktop

Legal-tech developers

Compliance officers

Researchers and Journalists

How many laws are available in this MCP?

Is the legal text in English?

Do I need an API key for e-Gov?

Can I search for specific keywords within a law?

Which AI clients can use this MCP?

Do I need an API key or registration?

How do I find the law_id I need?

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