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MaxMindDB

MaxMindDB

Local
github.com/oschwaldMaps & Travel1Updated 1w ago
Repository

About MaxMindDB

MaxMindDB is a local MCP server for querying IP geolocation and network ownership in GeoIP2, GeoLite2, and custom MMDB databases. It supports database search, comparison, inspection, and downloads for users of MCP-compatible assistants.

Key features

  1. 01Look up IP locations and ASNs
  2. 02Search and summarize networks
  3. 03Compare and inspect databases
  4. 04Download and update databases

Use cases

  1. 01Identify the country and ASN for an IP
  2. 02Find networks associated with an ASN
  3. 03Check available databases and build dates

MCP support

Exposes tools to MCP clients for IP lookups, network searches, database comparison and inspection, and database installation or updates.

Configuration

Local server config is the same for every client. Copy it into your client’s MCP config file.

mcp.json · Universal config
{
  "mcpServers": {
    "oschwald-maxminddb": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "MAXMINDDB_MCP_DOWNLOAD_ENABLED",
        "-e",
        "MAXMINDDB_MCP_DATABASE_DIR",
        "-e",
        "MAXMINDDB_MCP_ACCOUNT_ID",
        "-e",
        "MAXMINDDB_MCP_LICENSE_KEY",
        "-e",
        "MAXMINDDB_MCP_EDITIONS",
        "ghcr.io/oschwald/maxminddb-mcp:0.4.0"
      ],
      "env": {
        "MAXMINDDB_MCP_DOWNLOAD_ENABLED": "<MAXMINDDB_MCP_DOWNLOAD_ENABLED>",
        "MAXMINDDB_MCP_DATABASE_DIR": "<MAXMINDDB_MCP_DATABASE_DIR>",
        "MAXMINDDB_MCP_ACCOUNT_ID": "<MAXMINDDB_MCP_ACCOUNT_ID>",
        "MAXMINDDB_MCP_LICENSE_KEY": "<MAXMINDDB_MCP_LICENSE_KEY>",
        "MAXMINDDB_MCP_EDITIONS": "<MAXMINDDB_MCP_EDITIONS>"
      }
    }
  }
}
Run commanddocker run -i --rm -e MAXMINDDB_MCP_DOWNLOAD_ENABLED -e MAXMINDDB_MCP_DATABASE_DIR -e MAXMINDDB_MCP_ACCOUNT_ID -e MAXMINDDB_MCP_LICENSE_KEY -e MAXMINDDB_MCP_EDITIONS ghcr.io/oschwald/maxminddb-mcp:0.4.0
Environment variables to set
MAXMINDDB_MCP_DOWNLOAD_ENABLED
MAXMINDDB_MCP_DATABASE_DIR
MAXMINDDB_MCP_ACCOUNT_IDYour MaxMind account ID.
MAXMINDDB_MCP_LICENSE_KEYSecretA MaxMind license key with access to the selected editions.
MAXMINDDB_MCP_EDITIONSComma-separated edition IDs available to your account.

Local servers need a runtime on your machine (e.g. Node.js 18+). Config file locations differ by client; see your client’s docs.

Packages
ocighcr.io/oschwald/maxminddb-mcp:0.4.0

Tools

No tool list yet

Local servers expose tools only once running on your machine, and the maintainer has not provided a tool list.

Details

From the project README

MaxMindDB MCP Server

License: ISC

Look up IP locations and network ownership in GeoIP2, GeoLite2, and custom MMDB databases from your AI assistant. Search networks, compare databases, and download new databases through MCP.

This is an unofficial project and is not endorsed by MaxMind Inc. For official products and support, visit maxmind.com.

Try asking:

  • "Using MaxMindDB, identify the country and autonomous system for 8.8.8.8."
  • "Find the networks belonging to AS13335 within 1.0.0.0/8 in my ASN database."
  • "Which databases are available, and when were they built?"

Answers come from your databases. IP geolocation is an estimate, not a device's precise location. ASN data describes network ownership, not the identity of a person using an address.

What you need

Provide either existing .mmdb files or a MaxMind account ID and license key with access to the editions you want. Databases and credentials are not bundled.

The server runs on your computer and requires a client that supports local MCP servers.

Installation

Claude Desktop

Install and configure the server through Claude Desktop. No terminal, Go installation, or config file is required.

  1. Download the latest MCPB. The single file includes native builds for all supported platforms.
  2. Open Settings → Extensions → Advanced settings → Install Extension in Claude Desktop and select the file.
  3. Choose how to provide databases in the extension settings:
    • Download databases: Enter your MaxMind account ID and license key. The default editions are GeoLite2-City and GeoLite2-ASN.
    • Use existing files: Turn off Download and update MaxMind databases and select the folder containing your .mmdb files.
  4. Enable the extension and ask: "Using MaxMindDB, list my databases and look up 8.8.8.8."

The first download runs in the background. Ask Claude to check database status if lookups are not ready yet. Enter license keys in extension settings, not in chat.

Upgrading from v0.2.0 or earlier: Remove the old extension, install the new one, and configure it again. Your database files remain in place. See upgrades, settings, and supported platforms.

Standalone executable

On macOS, install with Homebrew:

brew install --cask oschwald/tap/maxminddb-mcp

For other platforms, or without Homebrew, download an archive or Linux package from GitHub Releases. See standalone setup for installation and checksums. Then configure the server and connect your client below.

Go developers can also build from source.

Connect a client

Choose your client for step-by-step setup.

ClientSetup requirements
ChatGPT desktopInstalled executable and configuration; local threads only
CodexInstalled executable; config file or environment settings
Claude CodeUniversal native plugin, or installed executable and configuration
Antigravity CLI (agy)Installed executable and configuration
ZedInstalled executable and configuration
DockerDocker engine and a config file readable by the container
ChatGPT desktop plugin (experimental)Codex CLI registration and existing server configuration; desktop UI unverified
Claude Cowork plugin (experimental)Universal plugin ZIP; installation and settings UI unverified
Cursor plugin (unverified)Docker engine; installation and settings UI unverified
Gemini CLI (legacy)Continued Gemini CLI access; native extension prompts for account settings

Configuration

Claude Desktop users can manage settings in the extension. For standalone installations, the configuration guide covers:

  • Downloads using MaxMind credentials.
  • Existing MMDB folders or GeoIP.conf.
  • Environment settings, config discovery, and logging.

If setup fails, start with troubleshooting.

Tools

Your assistant discovers the tools automatically. You can ask it to look up IPs, search or summarize networks, compare and inspect databases, or install and update databases.

The tool reference documents arguments, results, filters, pagination, limits, and errors.

Help and development

License

ISC.

Comments

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New to MCP?

From what the protocol is to installing your first server, these answers cover most first questions.

An open protocol that defines how AI applications connect to external tools and data in a uniform way. Clients talk to the model; MCP servers provide tools, resources and prompt templates. They exchange standard messages, so one server can be reused by many clients.