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Monumenten

Official registry Other

Look up Dutch BAG verblijfsobject IDs and monumental status.

Source code Documentation

What can you do with Monumenten?

  • 🏠 Find verblijfsobject IDs - Convert Dutch addresses to BAG identifiers (verblijfsobject_id)
  • 🏛️ Check monumental status - Determine if a property is protected as cultural heritage
  • 📍 Support flexible address input - Search by postal code + house number or full address
  • 🔍 Handle address variations - Support house letters and suffixes (30A, 30-2, etc.)

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

PYPI package mcp-monumenten
Claude Code 
claude mcp add monumenten -- uvx mcp-monumenten==3.0.1
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "monumenten": {
            "command": "uvx",
            "args": [
                "mcp-monumenten==3.0.1"
            ]
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. Monumenten MCP Server 🏛️
  2. What This Does
  3. Quick Setup
  4. Usage Examples
  5. Installation
  6. Data Sources
  7. License

Monumenten MCP Server 🏛️

A Model Context Protocol (MCP) server that enables AI assistants to check monumental status of Dutch addresses relevant for woningwaardering (rent-point system). Connects to the Dutch BAG (Basisadministratie Adressen en Gebouwen) data and Ministry of Cultural Heritage (Rijksdienst voor het Cultureel Erfgoed) to identify national monuments, nationally protected cityscapes, and municipal monuments.

Built on the MCP Python SDK v2 (MCPServer). Tools return structured results; validation and lookup failures raise ToolError (is_error=true) so the model can retry.

Requires Python 3.11+.

[!NOTE] This MCP server is based on the monumenten package. For more information, see the monumenten package.

What This Does

This MCP server allows AI assistants to:

  • 🏠 Find verblijfsobject IDs - Convert Dutch addresses to BAG identifiers (verblijfsobject_id)
  • 🏛️ Check monumental status - Determine if a property is protected as cultural heritage
  • 📍 Support flexible address input - Search by postal code + house number or full address
  • 🔍 Handle address variations - Support house letters and suffixes (30A, 30-2, etc.)
Available Tools
ToolParametersResult
get_verblijfsobject_idhouse_number, postal_code OR street + house_number + city, optional house_letter, house_suffixStructured matches list of BAG verblijfsobject records
get_monumental_statusbag_verblijfsobject_id (16 digits)Structured monumental status (provincie, rijksmonument, rijksbeschermd stads-/dorpsgezicht, municipal monument; provinciaal_monument is always null)

Quick Setup

Add to your AI assistant's MCP configuration:

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

For local development:

{
  "mcpServers": {
    "monumenten": {
      "command": "uv",
      "args": ["run", "--project", "/path/to/mcp-monumenten", "mcp-monumenten"]
    }
  }
}

Streamable HTTP (mcp-monumenten --http) listens on http://127.0.0.1:8000/mcp by default.

Claude Code plugin

Requires uv. Then:

/plugin marketplace add woonstadrotterdam/mcp-monumenten
/plugin install monumenten@woonstad-rotterdam

Or add the server directly: claude mcp add monumenten -- uvx mcp-monumenten.

Usage Examples

Finding Monumental Status

"What is the monumental status of Coolsingel 30, Rotterdam?"

The AI will:

  1. Convert the address to a BAG verblijfsobject ID
  2. Check monument registries
  3. Report rijksmonument status, rijksbeschermd stads-/dorpsgezicht, or municipal monument designation

"Is 1234AB 30-2 a rijksmonument?"

The AI can handle:

  • Postal code + house number format
  • House number suffixes (30-2, 30A, etc.)
  • Direct verblijfsobject ID lookups
Address Flexibility

The server handles Dutch address formats:

  • 1234AB 30 - Basic postal code + house number
  • 1234AB 30-2 - With house number suffix
  • 1234AB 30A - With house letter
  • Coolsingel 30, Rotterdam - Full street address

Installation

uvx mcp-monumenten
Local Development
git clone https://github.com/woonstadrotterdam/mcp-monumenten.git
cd mcp-monumenten
uv sync
uv run --project . mcp-monumenten

Data Sources

License

MIT License - see LICENSE file for details.

Frequently asked questions

What is Monumenten?

Look up Dutch BAG verblijfsobject IDs and monumental status.

How do I install Monumenten?

It runs on your machine. In Claude Code: claude mcp add monumenten -- uvx mcp-monumenten==3.0.1. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Monumenten need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is Monumenten open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains Monumenten?

It is published by woonstadrotterdam. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.