Ask about any Estonian company, person, trademark or activity right inside your chat. Free, no API key, in Estonian or English.
The interface is natural language - you don't need to know table names or tool details. Ask the way you'd ask a colleague.
Tell me about a company - owners, board, financials
Which companies is a given person connected to?
Who are a company's beneficial owners?
What happened in the Estonian business register today?
Top 10 taxpayers and employers in Estonia
Find trademarks containing a word - who owns them?
How many companies do retail trade (EMTAK 47.8) and where are they?
Compare three companies' 2024 financials
The server ties together the nimistu.ee dataset and builds the right queries for each question - you never have to work out which table to use.
Status, address, activity, VAT, financials, tax debt, board, owners, beneficial owners.
Subsidiaries and affiliates, the foreign parent, and the group structure.
All of a person's current and past ties to Estonian companies - board, shareholder, beneficial owner, signatory.
Search Estonian + EUIPO trademarks by name. See status, validity and owner.
Find companies by activity code. Get listings, county breakdowns and sector stats.
A daily summary and freshly registered companies - broken down by form, county and activity.
Top taxpayers, employers, revenue, profit, tax debtors, procurement winners, MPs and cabinet members active in business.
VAT status, revenue, profit, employee count and tax-debt position with its date.
Universal search across companies, people and trademarks - every result carries its nimistu.ee citation URL.
Bilingual. Ask in Estonian or English - answers come back in the same language. Company names, addresses and register data always stay in their original form.
We offer two transports - use the newer Streamable HTTP if your client supports it. SSE is there for backward compatibility.
Add the name nimistuMCP and paste the server URL.
https://nimistu.ee/api/mcp
Add the server straight from the CLI - registered globally.
claude mcp add --transport http \ nimistu https://nimistu.ee/api/mcp
Add to ~/.cursor/mcp.json (global) or the project's .cursor/mcp.json.
{
"mcpServers": {
"nimistu": {
"url": "https://nimistu.ee/api/mcp"
}
}
}ChatGPT mainly uses the search and fetch tools that nimistuMCP provides. Requires Developer Mode; availability depends on your plan.
Yes. No API key, no signup, no limit in reasonable use. Nimistu MTÜ operates in the public interest.
No. The server is read-only - exactly the dataset you see on nimistu.ee. Nothing is added or changed based on your questions.
Yes, both languages. Ask in Estonian or English - answers come in the same language. Names and register data stay original.
70+ public sources - the Business Register, Tax Board, procurement, courts, EUIPO and more. Fastest sync every 10 minutes. Full list: /en/sources.
Queries go only to the nimistu server, where they run against public registers. We don't share them with third parties or use them to train models.
The toolset works, but we're still expanding it. Spotted a bug or want a feature? Get in touch.
A summary of the server - protocol, transport, tools, and a quick test to confirm the connection works.
curl -X POST https://nimistu.ee/api/mcp \
-H "Content-Type: application/json" \
-H "Accept: application/json, text/event-stream" \
-d '{"jsonrpc":"2.0","id":1,"method":"initialize",
"params":{"protocolVersion":"2025-06-18",
"capabilities":{},"clientInfo":{"name":"test","version":"1.0"}}}'