CheckBiz Merchant Check API
Merchant Check answers whether the shop on a domain is a real, active company in a European business register and whether the domain belongs to that company, returning verified, partial, not_found or attention with the sources of each fact. Available as a REST call (GET /v1/merchant-check?domain=...) authenticated with an X-API-Key header, and as a remote MCP server exposing one tool, check_merchant. 100 free lookups a month.