MCP-DutchPostalCodes: Precision Address Validation & Geolocation

Effortlessly enhance Dutch postal code accuracy with our robust MCP server—streamline address validation and geolocation data for flawless business operations. Trusted by professionals.

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About MCP-DutchPostalCodes

What is MCP-DutchPostalCodes: Precision Address Validation & Geolocation?

MCP-DutchPostalCodes is a specialized server built on the Model Context Protocol (MCP) framework. It enables developers to validate Dutch postal addresses and fetch geolocation data using either postal codes or WGS84 coordinates. The tool acts as a bridge between MCP-compatible platforms (like Claude Desktop or Cursor) and a real-time Dutch address database. It’s designed for applications needing precise geographic and administrative address information in the Netherlands.

How to Use MCP-DutchPostalCodes: Precision Address Validation & Geolocation?

Getting started requires Go 1.24+ installed. For quick setup on common MCP hosts:


{
  "mcpServers": {
    "dutch-postal-codes": {
      "command": "go",
      "args": ["run", "github.com/dstotijn/mcp-dutch-postal-codes@main"]
    }
  }
}

For manual installation, run: go install github.com/dstotijn/mcp-dutch-postal-codes@main. To customize transports (e.g., use Server-Sent Events), execute: mcp-dutch-postal-codes --stdio=false --sse, which outputs the HTTP endpoint URL.

MCP-DutchPostalCodes Features

Key Features of MCP-DutchPostalCodes

Multi-transport support: Works with stdio, HTTP/SSE, or custom configurations.
Real-time data: Leverages Bert Hubert’s live bagserv API for up-to-date address records.
Lightweight: Built with Go for efficient resource usage, ideal for embedded systems or cloud deployments.
Flexible output: Returns structured geolocation data (latitude/longitude) alongside administrative details like municipalities.

Common Use Cases

Perfect for:

GIS systems needing Dutch address geocoding.
User input validation in e-commerce or logistics platforms.
Automating address standardization in legacy systems.
Mapping applications requiring administrative boundary data.

MCP-DutchPostalCodes FAQ

FAQ

Do I need Go installed? Yes, the tool is Go-based. For headless setups, use the binary release via go install.

Can I use this outside the Netherlands? The current implementation only supports Dutch postal codes and coordinates. International support isn’t planned unless community-driven.

What’s the data source? Address data comes from PGWn and BAG via the bagserv API.

How do I contribute? Fork the GitHub repo and submit PRs for improvements or bug fixes.

Content

mcp-dutch-postal-codes

MCP server for retrieving Dutch address information by postcal code or WGS84 coordinates.

Requirements

Go 1.24

Installation

Configuration for common MCP hosts (Claude Desktop, Cursor):

{
  "mcpServers": {
    "dutch-postal-codes": {
      "command": "go",
      "args": ["run", "github.com/dstotijn/mcp-dutch-postal-codes@main"]
    }
  }
}

Alternatively, you can manually install the program (given you have Go installed):

go install github.com/dstotijn/mcp-dutch-postal-codes@main

Usage

$ mcp-dutch-postal-codes --help

Usage of mcp-dutch-postal-codes:
  -http string
        HTTP listen address for JSON-RPC over HTTP (default ":8080")
  -sse
        Enable SSE transport
  -stdio
        Enable stdio transport (default true)

Typically, your MCP host will run the program and start the MCP server, and you don't need to manually do this. But if you want to run the MCP server manually, for instance because you want to serve over HTTP (using SSE):

Given you have your PATH environment configured to include the path named by $GOBIN (or $GOPATH/bin $HOME/go/bin if $GOBIN is not set), you can then run:

mcp-dutch-postal-codes --stdio=false --sse

Which will output the SSE transport URL:

2025/03/12 15:20:01 MCP server started, using transports: [sse]
2025/03/12 15:20:01 SSE transport endpoint: http://localhost:8080

Acknowledgements

Uses Bert Hubert's testing instance of his bagserv web service (Article).

License

Apache-2.0 license