GridPin offline geocoder

Name: GridPin offline geocoder
Author: gridpin

by gridpinversion 0.4.0i★ –iRuns on your computer

Registry nameio.github.gridpin/gridpin-mcp

Install

Overview

Description from the maker (original English)

Offline geocoding and reverse geocoding from one local file per country. No API key, no rate limit.

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: Other

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).
You fill in yourself: GRIDPIN_HOME

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": {
    "gridpin": {
      "command": "uvx",
      "args": [
        "gridpin-mcp"
      ],
      "env": {
        "GRIDPIN_HOME": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add gridpin --env GRIDPIN_HOME=your-value -- uvx gridpin-mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "gridpin": {
      "command": "uvx",
      "args": [
        "gridpin-mcp"
      ],
      "env": {
        "GRIDPIN_HOME": "your-value"
      }
    }
  }
}

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": {
    "gridpin": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "gridpin-mcp"
      ],
      "env": {
        "GRIDPIN_HOME": "your-value"
      }
    }
  }
}

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.

Values you fill in

GRIDPIN_HOME env
Directory for downloaded country sheets (default: ~/.cache/gridpin)

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 6, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account gridpin, 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 Otheri

More stars than 0% of the other 32476 servers in this category
Published to the registry more recently than 88% of the other 32476 servers in this category
Basic checks equal to or better than 100% of the other 32476 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 GridPin offline geocoder 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 (0.4.0) reached the registry 4 days 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: Spec Driven Development, Remote Desktop Commander, zanadir

Alternatives

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Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

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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.

gridpin-mcp — offline geocoding for AI agents

An MCP server that lets an agent geocode addresses with GridPin: one memory-mapped file per country, read on your machine. No API key, no rate limit, and no query leaves the machine. The only network step is downloading a country sheet once, verified against the signed GridPin release.

Countries (release v0.7.1): United States, Canada, Germany, France, Italy, Spain, Mexico, Netherlands, Brazil, Serbia.

Add it to an agent

Claude Code:

$ claude mcp add gridpin -- uvx gridpin-mcp

Any client that reads an mcpServers config (Claude Desktop, Cursor, ...):

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

To keep sheets in another directory, pass GRIDPIN_HOME in the server's own environment:

{ "mcpServers": { "gridpin": { "command": "uvx", "args": ["gridpin-mcp"],

"env": { "GRIDPIN_HOME": "/path/to/sheets" } } } }

Exporting it in your shell is not enough. Some MCP clients start the server with only a few environment variables (clients built on the MCP Python SDK pass HOME, LOGNAME, PATH, SHELL, TERM and USER on macOS and Linux), so GRIDPIN_HOME and XDG_CACHE_HOME from your shell never reach it and sheets go to ~/.cache/gridpin.

download_sheet fetches a whole sheet in one tool call, and the larger sheets can take longer than a client allows for one call (mcp-haystack's MCPToolset, for example, stops after 30 s by default). Raise the client's tool timeout, or download the sheet beforehand in a terminal, with the same GRIDPIN_HOME as the server; the tool then returns at once:

$ uvx --from gridpin-mcp gridpin-fetch fr

Step-by-step setup for agents (requirements, settings, verification): llms-install.md.

If GridPin is useful to you, a star on GitHub helps other people find it.

Tools

Tool	What it does
`list_countries`	covered countries, sheet sizes, which are downloaded
`download_sheet`	fetch one country sheet (32-677 MB) once, verify its SHA-256; the only tool that uses the network
`geocode`	address text -> ranked candidates with `lat`, `lon`, `precision`, `confidence`
`reverse`	coordinates -> nearest indexed addresses with `distance_m`
`batch`	up to 1000 addresses of one country per call, in input order

Results are the same as the GridPin CLI, Python and DuckDB return. Treat street or city precision as approximate.

Download a sheet without MCP

$ pip install gridpin-mcp

$ gridpin-fetch fr # prints the path, e.g. ~/.cache/gridpin/v0.5.0/france.bin

import gridpin

from gridpin_mcp import sheets

path = sheets.download("fr") # no-op when already downloaded gridpin.Geocoder(str(path)).geocode("1 rue de la Paix, Paris", 1)

Sheets go to $GRIDPIN_HOME, else $XDG_CACHE_HOME/gridpin, else ~/.cache/gridpin. Sizes and SHA-256 of every sheet are pinned in the package from the signed release attestation; a download that does not match is discarded.

License

Apache-2.0. Sheet data: see attributions.

GridPin offline geocoder

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

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 Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

zanadir

README from the maker

gridpin-mcp — offline geocoding for AI agents

Add it to an agent

Tools

Download a sheet without MCP

License