# FirmenData — Documentation for AI Systems

> FirmenData is a DACH company-data platform for Germany, Austria and Switzerland, built from official registers and covering millions of companies.

Last updated: 2026-10-19

## Data and sources

FirmenData presents company register information and financial statements alongside company websites and EU tender notices. Availability varies by company, country and source.

- Germany: Unternehmensregister/Bundesanzeiger and Handelsregister.
- Austria: Firmenbuch.
- Switzerland: Zefix/SHAB.
- Financial statements: balance sheets (Bilanz) and profit and loss statements (GuV), with historical figures where available.
- Company information: register identifiers, legal form, location, shareholders and management.
- Corporate events: insolvency and liquidation events.
- Procurement: EU tenders from TED (Tenders Electronic Daily).
- Company websites and summaries, where available.

The supported languages are German and English only. Source documents and register text may remain in their original language.

## Products

### Web app

- German: https://firmendata.com/de
- English: https://firmendata.com/en
- Company search: https://firmendata.com/de/suche and https://firmendata.com/en/search

Company pages present register information, financial statements, management and shareholder information where available.

### REST API v1

- API base URL: https://api.firmendata.com/v1
- API documentation: https://firmendata.com/de/developer/apis
- OpenAPI document: https://firmendata.com/api/openapi.json
- API key management: https://firmendata.com/de/developer/api-keys

The API supports company search, company profiles, financials, shareholders, register history and documents. Consult the API documentation for authentication, endpoint parameters and credit usage. Autocomplete can be used without an API key.

### MCP server

- Server: https://mcp.firmendata.com
- Setup documentation (German): https://firmendata.com/de/developer/mcp
- Setup documentation (English): https://firmendata.com/en/developer/mcp

MCP provides company-data tools for compatible AI clients. Free accounts include MCP and API access; usage is subject to available credits.

### SDKs and integrations

Documentation: https://firmendata.com/de/developer/sdks

- Node: package `firmendata`, installed with `npm install firmendata`. Repository: https://github.com/FirmenData/firmendata-node
- Python: package `firmendata`, installed with `pip install firmendata`. Repository: https://github.com/FirmenData/firmendata-python
- n8n: community package `n8n-nodes-firmendata`. Repository: https://github.com/FirmenData/n8n-nodes-firmendata

## Plans

- Free: includes API and MCP access, with 800 free credits every month (unused free credits do not roll over; purchased credits never expire).
- Pro: €40/month or €360/year, net prices.
- Enterprise: on request.
- Plan details: https://firmendata.com/de/preise

## Company page URLs and discovery hubs

Company page URL patterns:

- German: https://firmendata.com/de/unternehmen/{city}/{register-id}/{slug}
- English: https://firmendata.com/en/company/{city}/{register-id}/{slug}

For example:

- https://firmendata.com/de/unternehmen/muenchen/HRB6684/siemens-aktiengesellschaft
- https://firmendata.com/en/company/muenchen/HRB6684/siemens-aktiengesellschaft

Use the page's published URL rather than constructing URLs from a company name.

Discovery hubs:

- Company list URL pattern: https://firmendata.com/de/listen/{slug}
- Top Mittelstand list: https://firmendata.com/de/listen/top-mittelstand-deutschland
- Tax advisors chamber directory: https://firmendata.com/de/listen/steuerberaterkammer-firmenverzeichnis
- New registrations: https://firmendata.com/de/entdecken/neugruendungen
- Insolvencies: https://firmendata.com/de/entdecken/insolvenzen
- EU tenders: https://firmendata.com/de/entdecken/vergabe

## Structured data and dataset endpoint

Company pages embed schema.org JSON-LD, including a Dataset node. Its `distribution.contentUrl` links to the public machine-readable JSON endpoint:

https://firmendata.com/api/companies/{euId}/dataset

Use the company's EU identifier for `{euId}`. The endpoint exposes the public subset described by the company page's Dataset, including available register information and financial figures.

## Citation guidance

Cite the company page URL and the 'Stand' date shown on the page. Include the relevant reporting year when citing financial figures. Distinguish official register information from generated summaries, and do not infer that a missing field means the underlying fact does not exist.

## Contact and references

- Legal name: Firmendata UG (haftungsbeschränkt).
- Email: info@firmendata.com.
- Data sources: https://firmendata.com/de/datenquellen
- Data quality: https://firmendata.com/de/datenqualitaet
- Legal notice: https://firmendata.com/de/impressum
- Compact AI summary: https://firmendata.com/llms.txt