Nummeropslag

Overview

Nummeropslag is a Model Context Protocol server that brings privacy-first Danish caller ID, CVR company lookup, operator data, and community spam signals into any MCP-compatible AI assistant. Your assistant can call Nummeropslag's tools directly whenever it needs to identify a caller, look up company information, or check spam data during a conversation or agent workflow.

The server runs locally on your machine as the Python package nummeropslag-mcp, installed via uvx nummeropslag-mcp. It communicates with your AI assistant over standard input and output. You'll need to provide an API key through the NUMMEROPSLAG_API_KEY environment variable. The latest release is v1.0.2, published under the MIT license with source code available at andrey-tut/nummeropslag-api on GitHub.

Nummeropslag is categorized as a Development tool on mcp.site and integrates with MCP clients including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, Zed, and others. If you maintain this server, you can claim this listing to verify ownership and keep the information up to date. Visit https://nummeropslag.dk/mcp to learn more.

Installation

// claude_desktop_config.json
{
  "mcpServers": {
    "nummeropslag": {
      "command": "uvx",
      "args": [
        "nummeropslag-mcp"
      ],
      "env": {
        "NUMMEROPSLAG_API_KEY": "<nummeropslag-api-key>"
      }
    }
  }
}

Requires NUMMEROPSLAG_API_KEY