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Nummeropslag MCP Server

by andrey-tut Your server? Claim it
local only

Nummeropslag runs on your own machine — the client starts it, so there is no endpoint to ping. 113 installs a week from pypi. Last commit 2 Nov 2026.

Privacy-first Danish caller ID, CVR company lookup, operator data, and community spam signals.

Installs per day peak 31 · avg 14 · +41% w/w
a month agotoday
113
Installs / week
pypi · nummeropslag-mcp
1
Stars
0 open issues
2 Nov 2026
Last commit
from GitHub
MIT
License
Python

What the code does

We read the source, 5 d ago · rules 995398eba69f

In the project's build, not in the package

Found in continuous integration, deployment or infrastructure files, or in a neighbouring package of the same monorepo. None of this is installed when you add the server: it describes how the project is built and released. We list it because a leaked key in a build pipeline is still a real problem, but it is not something this server does on your machine.

Page loads a third-party script index.html:13
  <script src="https://cdn.redoc.ly/redoc/latest/bundles/redoc.standalone.js"></script>

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

Nothing serious here today

Today is the operative word: we check Nummeropslag every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Three servers free · no card

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

run in your terminal
claude mcp add nummeropslag -e 'NUMMEROPSLAG_API_KEY=<NUMMEROPSLAG_API_KEY>' -- uvx nummeropslag-mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "nummeropslag": {
      "command": "uvx",
      "args": [
        "nummeropslag-mcp"
      ],
      "env": {
        "NUMMEROPSLAG_API_KEY": "<NUMMEROPSLAG_API_KEY>"
      }
    }
  }
}
~/.codex/config.toml
[mcp_servers.nummeropslag]
command = "uvx"
args = ["nummeropslag-mcp"]
env = { NUMMEROPSLAG_API_KEY = "<NUMMEROPSLAG_API_KEY>" }
.cursor/mcp.json
{
  "mcpServers": {
    "nummeropslag": {
      "command": "uvx",
      "args": [
        "nummeropslag-mcp"
      ],
      "env": {
        "NUMMEROPSLAG_API_KEY": "<NUMMEROPSLAG_API_KEY>"
      }
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "nummeropslag": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "nummeropslag-mcp"
      ],
      "env": {
        "NUMMEROPSLAG_API_KEY": "<NUMMEROPSLAG_API_KEY>"
      }
    }
  }
}

Put your own value in place of <NUMMEROPSLAG_API_KEY> (Partner API key from https://nummeropslag.dk/api-noegle). The author’s registry entry marks it as required.

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Nummeropslag — questions

Answers built from our own checks of this server.

Why is there no uptime for Nummeropslag?
Nummeropslag runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the pypi package nummeropslag-mcp was installed 113 times last week.
How do I connect Nummeropslag?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It runs locally, so the command pulls nummeropslag-mcp straight from pypi; nothing to host, nothing to sign up for.
How many people use Nummeropslag?
The pypi package nummeropslag-mcp was installed 113 times in the last week. Week over week that is +41%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is Nummeropslag open source?
Yes — it is published under the MIT licence, written in Python and 1 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.