Agentic-Firmenbuch.at
DE Playground Connect

The Firmenbuch now answers your questions directly.

Ask, don’t search. Research Austrian companies in plain language – official Firmenbuch data directly in Claude, Cursor, VS Code, GitHub Copilot and any MCP-capable AI tool.

Connect Try the playground
At a glance
341,000+ companies, updated daily Official source: Firmenbuch (BMJ) Works with Claude and any MCP-capable client Queryable and automatable by AI agents

Demo: a question in plain language is typed, the Firmenbuch is queried, then a sourced result list with official balance-sheet figures appears, each row citing its source.

Sample data for illustration. Real queries return official Firmenbuch data.
Overview

Official company data – ready for agents.

The Firmenbuch is Austria's official company register – with master data and the filed annual accounts of every registered company. We parse those filings, compute financial ratios, and serve everything machine-readable via an MCP server.

After a one-time setup in your AI tool, the agent answers questions in plain language with current original data straight from the register – not hallucinated values.

Firmenbuch → Parsing & ratios → MCP server → AI agent
What you can do with it

Reliable answers, not hallucinations.

For every answer, the AI agent pulls directly from official Firmenbuch data – traceable and verifiable, not made up. No scraping, no PDF parsing.

// M&A

“Active GmbHs in Upper Austria with balance sheet over €5M whose managing director is over 60.”

→ returns acquisition & succession targets
// Sales

“Mid-sized GmbHs in Vienna with a high equity ratio – for my sales pipeline.”

→ returns a qualified lead list
// Marketing & research

“Which GmbHs were founded in Styria in the last 3 years?”

→ returns a target-customer list
// Due diligence & KYC

“Check ‘Example GmbH’: active since when, current management, latest balance-sheet figures.”

→ returns the company profile, status & source document

M&A & investments

Screen targets by size, growth and capital structure – with solid balance-sheet figures, not gut feel.

Sales, marketing & research

Qualified leads, target-customer lists and market overviews in seconds – by region, size and financial ratios.

Developers & agents

Register data as clean tools inside agentic workflows – no scraping, no PDF parsing.

Integrations

Connect once, query everywhere.

Agentic-Firmenbuch.at is an MCP server – the open standard AI tools use to call external data sources. Connect once, use it in every compatible tool: Firmenbuch in Claude, Cursor, VS Code, GitHub Copilot and any MCP-capable AI tool.

  • Claude Cowork (desktop app) – one-click connect, no API key (email login). (see guide)
  • Claude Code – terminal tool (macOS, Windows, Linux).
  • VS Code (Copilot Chat) – in your usual editor.
  • Cursor and other MCP clients with HTTP-header support.
Connect

A standards-compliant MCP server – connected in minutes.

The service is accessed over the Model Context Protocol – compatible with Claude, Claude Code, VS Code and any MCP client. Authentication via an X-API-Key header; no SDK required, configured by server URL and key.

View the guide Open source on GitHub
mcp.config.json 
{
  "mcpServers": {
    "agentic-firmenbuch": {
      "url": "https://mcp.agentic-firmenbuch.at/mcp",
      "headers": {
        "X-API-Key": "API_KEY"
      }
    }
  }
}

Tools

  • Search & filter companies (region, size, ratios)
  • Detail & historical data per company
  • Link source documents (annual accounts)
  • Size and regional overviews

Fair-Use-Limits

  • Rate limit per API key (fair use)
  • No usage-based fees
  • Higher limits on request
Playground

Try it in the playground.

Pick a role, ask a question – and watch the AI agent answer it with real register data via the Firmenbuch MCP server. No sign-up needed.

Agent console Source: Firmenbuch MCP server
1 System prompt

Who is the agent? Sets role, tone and rules – defined once.

2 User prompt

What should it do? The concrete question or task – changes per request.

Enter to send · Shift + Enter for a new line

firmenbuch.search()
Agent is querying the Firmenbuch…
Illustrative example. With a free API key, the server returns real data from the Firmenbuch.
FAQ

FAQ.

Can I use the Austrian Firmenbuch in Claude, Cursor or Copilot?
Yes. Agentic-Firmenbuch is a standards-compliant MCP server and works with Claude (Cowork, Desktop, claude.ai), Cursor, VS Code, GitHub Copilot (agent mode) and any MCP-capable AI tool. Add the connector https://mcp.agentic-firmenbuch.at/mcp once and ask for company data in natural language. A ChatGPT app is in preparation.
How do I get Austrian company data into my AI assistant?
Request free access (email login or API key), add the MCP connector in your AI tool, and start asking – e.g. “Find active GmbHs in Upper Austria with a balance-sheet total above €5 million”. Answers come from the official Austrian company register (Firmenbuch), updated daily.
What does it cost?
There is a free Free tier (company search with basic data and a limited number of full lookups per month) – all it needs is a verified email address, no password, no credit card. Pro unlocks the full feature set and costs €79 per month incl. VAT, with a 14-day free trial (no charge today) and monthly cancellation.
Do I need my own MCP client?
Yes. Agentic-Firmenbuch provides only the interface (the MCP server) – no client is bundled. You use your own MCP-capable client, for example Claude (Cowork, Desktop, claude.ai), Claude Code, Cursor or GitHub Copilot, and connect the interface there yourself.
How do I cancel my Pro subscription?
Anytime, in one click. Open Manage/cancel subscription and enter your email address. You receive a link to the Stripe customer portal, where you can cancel, change your payment method or view your invoices. No login account is needed. The cancellation takes effect immediately; access then switches to the Free tier.
What's included in the service?
Included is the interface to our processed Firmenbuch data (the MCP server/connector) – and thus unlimited queries within your plan (Free limited, Pro full feature set). Not included is the AI client itself: you bring your own MCP-capable client with an AI model (LLM) – such as Claude, Cursor or GitHub Copilot. Its use runs on your own token/usage budget with the respective provider; we have no control over that.
Which countries are covered?
Austria is fully covered and live – the complete Firmenbuch, updated daily. Integration of the German commercial and company register is already in progress: the plan is to complete Bavaria around July 2026 and then gradually all of Germany.
Where does the data come from?
From the official Austrian Firmenbuch (BMJ – Ministry of Justice), including the filed annual accounts. We parse the filings and compute financial ratios. Source: Austrian Firmenbuch / BMJ – Ministry of Justice, licensed under CC BY 4.0.
Which data fields are included?
Master data (company name, Firmenbuch number, legal form, registered seat, founding year, management), the filed annual accounts plus computed ratios and multi-year trends. A complete list of all available fields is in the data-fields documentation.
How are EBIT and EBITDA computed?
The Austrian UGB statement (§ 231 (2), total-cost method) reports neither EBIT nor EBITDA. As ebit we use the reported operating result (Betriebserfolg) (operating result before financial result and taxes); ebitda is the operating result plus depreciation. This is not the strict EBIT definition (result before interest and taxes, including financial result) but a simplified approximation. For companies with material financial or participation results (e.g. holdings) values may differ noticeably. All other line items are passed through unchanged from the statement. Details in the data-fields documentation.
Which companies are included?
All legal forms are covered – GmbH, AG, KG, OG, sole proprietorships, co-operatives, private foundations, SE etc.; there is no per-legal-form gap. Currently about 341,000 legal entities are served. This is a continually growing slice of the full register: entities without a filed annual statement as well as inactive and deleted entries are not yet fully included and are added step by step. Banks and insurers are included but report under their own regulatory schema (BWG/VAG), so individual ratios may differ or aren't directly comparable. Included is Firmenbuch data only – we do not mix in external sources such as industry, market or credit-rating data.
Which companies have computed ratios?
Financial ratios exist only where an annual statement was filed. A large share of companies file only a balance sheet, so revenue and P&L are available for a minority. size_gkl is the UGB filing size class, not the actual balance-sheet total. An industry / NACE filter is not yet available.
What is an MCP server?
MCP (Model Context Protocol) is an open standard that AI tools use to call external data sources and tools. An MCP server exposes those tools – connect it to your AI tool once and use the Firmenbuch data straight inside the conversation.
Which tools are supported?
Claude Cowork connects one-click via the app settings with an email login (no API key) – see guide. Claude Code (terminal), VS Code (Copilot Chat), Cursor and every other MCP client with HTTP-header support connect with an API key.
Privacy?
We process only the email address to create the API key (double opt-in). No tracking cookies are used. Details in the privacy policy.
Liability and warranty?
All data is processed automatically with best effort – but that does not warrant accuracy, completeness or timeliness. Use is entirely at your own risk and under exclusion of any warranty. In case of doubt the official Austrian Firmenbuch is the authoritative source. Details in the Terms of Service.