Firmium is a business intelligence platform for searching and analyzing companies. Data comes from official business registries and public filings.
What is Firmium?
Firmium builds company profiles from official registers and exposes the same data through a REST API and an MCP server for AI agents.Main features
Company search
- Search by name, registration number, VAT number, legal form, or status
- Filter by country
Company profiles
- Registration data and status
- Legal form, VAT number, and addresses
- Financial indicators where the registry publishes them
API and MCP
- REST API with token authentication
- MCP server for AI agents and assistants
- Via MCP: management, shareholders, ownership tree, company network and changes over time as separate sections (MCP server)
Why Firmium?
- Official sources: Fields are sourced from the responsible registry
- API and MCP: Integrate into CRMs, agents, and internal tools
Getting started
- Create an account
- Authenticate API requests
- Browse the API reference in the sidebar
Note: API requests use Authorization: Token <key>. See Authentication.
Field availability varies by country and registry. For a current overview of coverage, contact sales@firmium.de.