ORSF, the Open Register of Slovak Companies, is an independent project that brings publicly available data from Slovak state registers into one searchable platform. It combines information from sources including RÚZ, RPO, ORSR, ZRSR, FS, RPVS, CRZ and ÚVO, with data from additional registers planned. The service helps users find and verify companies and sole traders, review profiles and financial statements, and explore businesses by region, industry or legal form. It also supports market and competitor research, company comparisons, filtering and exports.

For developers, ORSF offers a public REST API for company details and search, with a free tier of 1,000 lookups per month and no signup required. Integrations include a TypeScript SDK and an MCP server for AI agents; webhooks and other SDKs are planned. The project says its data is updated daily and cites the underlying register and fetch time for each datapoint. ORSF is not an official state registry, and users should cite the original register when referencing information.