Geojp MCP Server

by 55tarkun Your server? Claim it

answering

Geojp is answering right now. Last checked 9 min ago. 23 installs a week from npm. Last commit 15 Aug 2026.

MCP server for Japan geodata: cadastral lot numbers (chiban) and reverse geocoding, for AI agents.

Installs per day peak 10 · avg 4 · +11% w/w

a month agotoday

Uptime history 62 days of history · worst day 92%

62 days agonow

100.0%

Uptime 24h

92 of 92 checks

—

Tools

hidden behind auth

131 ms

Response time

average over 24h

Installs / week

npm and PyPI

Nothing serious here today

Today is the operative word: we check Geojp every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 9 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add geojp --transport http https://mcp.reversegeojp.com

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

{
  "mcpServers": {
    "geojp": {
      "url": "https://mcp.reversegeojp.com"
    }
  }
}

~/.codex/config.toml

[mcp_servers.geojp]
url = "https://mcp.reversegeojp.com"

.cursor/mcp.json

{
  "mcpServers": {
    "geojp": {
      "url": "https://mcp.reversegeojp.com"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "geojp": {
      "url": "https://mcp.reversegeojp.com"
    }
  }
}

This one needs environment variables set before it will start: GEOJP_API_KEY (API key for ReverseGeoJP/ChibanJP, obtained at https://reversegeojp.com). The author declared them in the registry entry; get the values from the project itself.

This endpoint answered with an authorization challenge. The server is running, but it did not say what kind of credentials it expects.

Endpoints

URL	Transport	State	Latency	Checked
https://mcp.reversegeojp.com	streamable-http	needs auth	133 ms	9 min ago

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Geojp — questions

Answers built from our own checks of this server.

Why is there no tool list for Geojp?

The server answered our handshake with an authorization challenge, so it is running — but it will not describe its tools to an anonymous client. To see them you need to connect with your own credentials. We record it as alive, not as broken: 100.0% of checks in the last 24 hours got a reply.

Is Geojp working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 131 ms. The bar chart above shows every period we have measured.

How do I connect Geojp?

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. You will need your own credentials: it refuses anonymous clients.

Does Geojp need an API key?

Yes. Every time we knock, Geojp answers with an authorization challenge instead of its tool list — that is how we know it is running and gated rather than broken. Bring your own credentials and it will talk.

How fast is Geojp?

It answers our handshake in 131 ms on average, which is faster than 79% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.

How many people use Geojp?

The npm package geojp-mcp was installed 23 times in the last week. Week over week that is +11%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is Geojp 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.