Danish annual reports (CVR) MCP server

dk-regnskab-mcp

Give Claude (or any MCP client) the published annual reports of Danish companies: key figures for the latest year and the year before, read straight from the XBRL filings at the Danish Business Authority (Erhvervsstyrelsen). No API key needed.

Works for small companies (Danish GAAP) and listed ones (IFRS/ESEF, back to 2015), separates group and parent figures in group reports, and explains gaps instead of guessing. Tested live against about 300 real filings.

"What were revenue and equity for CVR 24256790 last year, and how did they change?"

Quickstart

Requires Node.js 22.18 or newer. No API key needed.

Claude Code

claude mcp add dk-regnskab -- npx -y dk-regnskab-mcp

Claude Desktop: add this to claudedesktopconfig.json:

{
  "mcpServers": {
    "dk-regnskab": { "command": "npx", "args": ["-y", "dk-regnskab-mcp"] }
  }
}

Cursor: the same block goes in ~/.cursor/mcp.json (or .cursor/mcp.json in a project). Other MCP clients: run npx -y dk-regnskab-mcp over stdio.

From source

git clone https://github.com/mikkelmanniche-dk/dk-regnskab-mcp
cd dk-regnskab-mcp && npm install && npm run build
claude mcp add dk-regnskab -- node /absolute/path/to/dk-regnskab-mcp/dist/index.js

Tools

All tools are read-only, declare an output schema and return structured content.

Key figures: revenue, gross profit, operating profit, profit before tax, profit for the year, average employees, total assets, current assets, cash, equity, liabilities.

Company name search (optional)

search_company uses the CVR register, which requires system-to-system credentials. They are free: apply at the Danish Business Authority, then pass them to the server:

claude mcp add dk-regnskab -e CVR_USER=... -e CVR_PASSWORD=... -- npx -y dk-regnskab-mcp

Everything else works without them. Note that the register, like the filing index, only answers over plain HTTP, so the credentials are sent unencrypted. They only give read access to public company data.

How it works

flowchart LR
  C[Claude / MCP client] -- stdio --> S[dk-regnskab-mcp]
  S -- "search by CVR" --> I[(distribution.virk.dk<br/>filing index)]
  S -- "download XBRL (gzip)" --> D[(Filing documents)]
  S --> P[Parse contexts & facts<br/>by namespace, not prefix]
  P --> F[Key figures + notes]

Pitfalls it handles

Real Danish filings are messier than the taxonomy suggests. The parser was built against actual filings:

Shortened. The full README is on GitHub.