Nummeropslag runs on your own machine — the client starts it, so there is no endpoint to ping. 84 installs a week from pypi. Last commit 4 Aug 2026.
Privacy-first Danish caller ID, CVR company lookup, operator data, and community spam signals.
We read the source, 19 h ago · rules 3dff92dd89df
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.
<script src="https://cdn.redoc.ly/redoc/latest/bundles/redoc.standalone.js"></script>
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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.
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.
claude mcp add nummeropslag -- uvx nummeropslag-mcp
{
"mcpServers": {
"nummeropslag": {
"args": [
"nummeropslag-mcp"
],
"command": "uvx"
}
}
}
[mcp_servers.nummeropslag]
command = "uvx"
args = ["nummeropslag-mcp"]
{
"mcpServers": {
"nummeropslag": {
"args": [
"nummeropslag-mcp"
],
"command": "uvx"
}
}
}
{
"mcpServers": {
"nummeropslag": {
"args": [
"nummeropslag-mcp"
],
"command": "uvx"
}
}
}
This one needs environment variables set before it will start:
NUMMEROPSLAG_API_KEY (Partner API key from https://nummeropslag.dk/api-noegle).
The author declared them in the registry entry; get the values from the project itself.
Who-called phone lookups: community verdict, spam rating, operator and reviews (ktozvonil.net).
Private company data & real-time news signals for AI agents.
Danish address & property lookup: BBR, Matriklen, DAR, CVR. A DAWA/Datafordeler-compatible source.
Irish company records from the CRO Open Data Portal, with alerts on status changes and filings.
Deterministic company, entity and location lookups for agents - per call, x402 or API key.
Agent Community MCP: member lookup, stats, DMV checks, and proposed .agent name interest.
Danish company registry (CVR): company search, financials, ownership, beneficial owners and more.
Glocalized business data layer for AI agents. Search companies, people, and signals.
Answers built from our own checks of this server.