Jp Eli MCP

Name: Jp Eli MCP
Author: matematicsolutions

by matematicsolutionsversion 0.3.3i★ –iRuns on your computer

Registry nameio.github.matematicsolutions/jp-eli-mcp

Install

Overview

Description from the maker (original English)

MCP server for Japan's e-Gov law search API: search, fetch, and cite national legislation.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Search & AI memory

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
The registry lists no key to fill in.

You need

PyPIPython’s uv installed (for the uvx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "jp-eli": {
      "command": "uvx",
      "args": [
        "jp-eli-mcp"
      ]
    }
  }
}

Run this in your terminal

claude mcp add jp-eli -- uvx jp-eli-mcp

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "jp-eli": {
      "command": "uvx",
      "args": [
        "jp-eli-mcp"
      ]
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "jp-eli": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "jp-eli-mcp"
      ]
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account matematicsolutions, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Search & AI memoryi

More stars than 0% of the other 7275 servers in this category
Published to the registry more recently than 33% of the other 7275 servers in this category
Basic checks equal to or better than 100% of the other 7275 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Jp Eli MCP safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.3.3) reached the registry 2 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Python (uv) on your computer.

What can I use instead?

In the same category: Context7, Codebase Memory, Exa

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

jp-eli-mcp

An MCP server for Japan's official e-Gov law search API (laws.e-gov.go.jp), run by the Digital Agency. It searches, fetches, and cites national legislation - acts, cabinet orders, ministerial ordinances - with a verifiable citation on every response.

Part of the MateMatic eu-legal-mcp production line, extended into Asia. Same citation contract (a stable identifier + a human-readable citation + a source URL) as the 18 EU/EEA connectors, adapted for a jurisdiction with no ELI scheme.

Scope. Discovery is by law title (jp_search_laws) or full-text keyword

(jp_search_by_keyword); fetch a specific article (jp_get_article) or the full text

(jp_get_full_text, truncated for very large laws such as the Civil Code). Every response

carries a dataset_note.

Licence. e-Gov law data is official public information published by the Japanese

government as open data (keyless, REST/JSON). This connector relays it with attribution and a

source_url.

The tools

Tool	What it does
`jp_search_laws`	Search laws by (partial) title.
`jp_search_by_keyword`	Full-text search across all laws, with highlighted snippets.
`jp_get_law`	Metadata for a law by `law_id`: title, law number, promulgation date.
`jp_get_article`	The text of one article of a law, by `law_id` and `article_num`.
`jp_get_full_text`	The full text of a law (truncated at ~300,000 characters).
`jp_coverage`	Declare what this connector covers, when each family was captured, and - explicitly - what it does NOT cover. Every gap carries a fallback.

Every response carries the contract: eli_uri (Japan has no ELI - this is the durable e-Gov viewer URL, e.g. https://laws.e-gov.go.jp/law/129AC0000000089, see eli_note), human_readable_citation (e.g. 民法（明治二十九年法律第八十九号）), and source_url (the machine-readable API URL).

Install

Not yet on PyPI - install from source until the first release ships:

git clone https://github.com/matematicsolutions/jp-eli-mcp

cd jp-eli-mcp pip install -e .

Once released, this will be uvx jp-eli-mcp.

Configuration via env:

JP_ELI_BASE_URL - default https://laws.e-gov.go.jp/api/2
JP_ELI_CACHE_DIR - default ~/.matematic/cache/jp-eli
JP_ELI_AUDIT_DIR - default ~/.matematic/audit

No API key. e-Gov's law search API is keyless.

Configure (Claude Code / any MCP client)

"mcpServers": { "jp-eli-mcp": { "command": "jp-eli-mcp" } } }

Windows 11 with Smart App Control

Smart App Control blocks unsigned executables, which covers uvx.exe, pip.exe and the jp-eli-mcp.exe launcher that pip writes at install time. The python.exe and py.exe from the python.org installer are signed by the Python Software Foundation, so running the module through the interpreter works:

python -m pip install jp-eli-mcp

python -m jp_eli_mcp

pip.exe is blocked for the same reason, so install with python -m pip, not pip install. If python is not on PATH, use the Windows launcher: py -3 -m jp_eli_mcp.

{ "mcpServers": { "jp-eli-mcp": { "command": "python", "args": ["-m", "jp_eli_mcp"] } } }

Do not turn Smart App Control off to work around this - it cannot be re-enabled without reinstalling Windows.

Governance

Public data only - read-only against e-Gov; no client data leaves the machine.
Audit log - every tool call appends one JSON line to ~/.matematic/audit/jp-eli-mcp.jsonl.
Vendor-neutral - talks only to laws.e-gov.go.jp; no LLM provider, no telemetry.
Verifiable citations - every response is independently checkable via source_url.

See CONSTITUTION.md and DISCOVERY.md.

Tests

pip install -e ".[dev]"

pytest tests/test_instructions_drift.py -v # offline pytest tests/test_smoke.py -v # hits live e-Gov

Jp Eli MCP

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Search & AI memoryi

Common questions

Alternatives

Context7

Codebase Memory

Exa

README from the maker

jp-eli-mcp

The tools

Install

Configure (Claude Code / any MCP client)

Windows 11 with Smart App Control

Governance

Tests

Licence