MCP Server

CVR for your AI assistant

Give Claude, ChatGPT and other AI assistants direct access to the Danish Central Business Register via Model Context Protocol (MCP).

Server URL

https://mcp.apicvr.dk/mcp

What is MCP?

Model Context Protocol (MCP) is an open standard that enables AI assistants to connect to external data sources and services in real time. Instead of the AI only knowing data from its training, it can actively fetch up-to-date information.

With the CVR MCP server, you can ask your AI assistant about Danish companies — and it will look them up in the CVR register as if it were using the API itself. Perfect for research, due diligence, lead generation and much more.

Available tools

The CVR MCP server exposes 7 tools:

lookup_company

(cvr_number: int)

Retrieve all information about a company by CVR number

search_company_by_name

(name: str)

Search companies by name (prefix match)

search_company_fuzzy

(name: str)

Fuzzy search by company name — finds results even with imprecise spelling

search_company_by_email

(email: str)

Find companies registered with a given email address

search_company_by_email_domain

(domain: str)

Find all companies with email on a specific domain, e.g. lego.com

search_company_by_phone

(phone: str)

Find companies registered with a specific phone number

search_company_by_address

(address: str, postal_code?: str)

Find companies at a specific address, optionally filtered by postal code

Setup instructions

Choose your AI assistant and follow the guide:

Claude.ai (web)

▶

Claude.ai supports MCP integrations on Pro and Team plans. Add the CVR server in under a minute:

Go to claude.ai/settings
Click Integrations
Click Add more or Add integration
Paste the URL: https://mcp.apicvr.dk/mcp
Click Save — CVR tools are now available in all your conversations

Claude Desktop (Mac / Windows)

▶

Open Claude Desktop's configuration file and add the CVR MCP server:

Configuration file location:
Mac: ~/Library/Application Support/Claude/claude_desktop_config.json
Windows: %APPDATA%\Claude\claude_desktop_config.json

Add the following to the file (create it if it doesn't exist):

{ "mcpServers": { "apicvr": { "command": "npx", "args": ["-y", "mcp-remote", "https://mcp.apicvr.dk/mcp"] } } }

Restart Claude Desktop — you can now ask about Danish companies directly in your chats.

Claude Code (CLI)

▶

Add the CVR MCP server to Claude Code with a single command:

claude mcp add apicvr --transport http https://mcp.apicvr.dk/mcp

Or add manually to .claude/settings.json in your project:

{ "mcpServers": { "apicvr": { "type": "http", "url": "https://mcp.apicvr.dk/mcp" } } }

Other MCP-compatible clients

▶

The CVR MCP server is fully compatible with any client that supports MCP HTTP transport (Streamable HTTP). Use the server URL:

https://mcp.apicvr.dk/mcp

No API key or authentication required.

Example prompts

Once the CVR MCP server is connected, you can ask your AI questions like these:

What is the CVR number for LEGO Group, and what industry are they in?

Find all companies registered at Vesterbrogade 1 in Copenhagen

Look up Novo Nordisk and tell me their official address and founding date

Are there any companies registered with the domain maersk.com?

Search for companies similar to "Carlsberg" — including typos

Find the company registered with phone number 70 12 34 56