Japan Law Search MCP Server

by fujimura-ui Your server? Claim it

not responding

Japan Law Search is listed as active in the registry but did not answer our last check. Last commit 10 Jul 2026.

Full-text search of all current Japanese laws (official e-Gov data), down to exact article text.

Uptime history 51 days of history · worst day 0%

51 days agonow

0.0%

Uptime 24h

0 of 182 checks

—

Tools

hidden behind auth

51 ms

Response time

average over 24h

Stars

last commit 10 Jul 2026

What changed 45

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 9 August 2026. No other catalogue keeps this.

22 Sep the owner changed

21 Sep the owner changed

20 Sep the owner changed

19 Sep the owner changed

18 Sep the owner changed

17 Sep the owner changed

16 Sep the owner changed

15 Sep the owner changed

14 Sep the owner changed

13 Sep the owner changed

and 35 more, back to 9 August 2026

Japan Law Search does not always answer

Over the last week it answered 0.0% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 6 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add japan-law-search-mcp --transport http https://horei-mcp.plus-synergy.workers.dev/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "japan-law-search-mcp": {
      "url": "https://horei-mcp.plus-synergy.workers.dev/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.japan-law-search-mcp]
url = "https://horei-mcp.plus-synergy.workers.dev/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "japan-law-search-mcp": {
      "url": "https://horei-mcp.plus-synergy.workers.dev/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "japan-law-search-mcp": {
      "url": "https://horei-mcp.plus-synergy.workers.dev/mcp"
    }
  }
}

This server publishes 1 more address. The block above uses the one we reach during checks; the full list is under Endpoints below, and the author may intend a particular one for your client.

Endpoints

URL	Transport	State	Latency	Checked
https://horei-mcp.plus-synergy.workers.dev/mcp	streamable-http	answering	51 ms	6 min ago
https://horei-mcp.plus-synergy.workers.dev/sse	sse	answering	49 ms	6 min ago

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Japan Law Search — questions

Answers built from our own checks of this server.

Is Japan Law Search working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 0 of 182 checks got a reply (0.0%), average response time 51 ms. The bar chart above shows every period we have measured.

The registry lists Japan Law Search as active — why does it not respond?

The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.

How do I connect Japan Law Search?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Japan Law Search need an API key?

No. Japan Law Search completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. This is what we observed, not what the docs claim.

Is Japan Law Search open source?

Yes — it is published under the MIT licence, written in TypeScript and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.