ORSF (Otvorený register slovenských firiem) je nezávislý open-data projekt agregujúci 14 oficiálnych slovenských registrov (RPO, ORSR, RÚZ, FS DPH a ďalšie) do jedného REST API a MCP servera. Pre AI agentov, novinárov, compliance a due diligence.

How is ORSF different from ORSR?

ORSR (Obchodný register SR, orsr.sk) is the official Ministry of Justice registry — no public REST API. ORSF (orsf.sk) is an independent open project that uses ORSR as ONE of 14 sources, adding REST API, MCP server, CLI and bulk export.

Yes, public business data is free under CC-BY 4.0. The REST API at https://api.orsf.sk/v1 is publicly accessible. Personal data (sole traders, full director details) requires authentication per GDPR Art. 5(1)(c).

How do AI agents access ORSF?

AI agents can use either the public REST API (https://api.orsf.sk/v1, OpenAPI spec at /v1/openapi.json) or the MCP server (@orsf/mcp-server) for direct integration with Claude Desktop and other MCP-compatible clients.

Open Slovak business registry · beta 2026-04

The largest open registryof Slovak companies.One public API. Free for basic data.

Complete RÚZ unified with RPO, ORSR, ZRSR, FS DPH, RPVS, CRZ, ÚVO and 14 state registers in a single data layer. REST, webhooks and a native MCP endpoint for AI agents. No signup. Free tier 1,000 lookups/mo, 60 req/min.

496 924

companies and organizations

active in Slovakia

488 927

sole traders

active in Slovakia

state registers

in one data layer

5 live · 9 coming

6.0M+

records

updated daily

100%

public data

no signup

8/7/2026, 03:20 PM

Last sync

continuously daily

What can you do here?

Find and verify a company

Search a company or sole trader and view its full profile — owners, financial statements, and connections.

Search a company

Analyse the market and competitors

Explore data across regions, industries and companies. Compare, filter, export.

Explore data

Integrate data via API

Plug into a single public API and use the data in your apps or AI agents.

API documentation

For developers

One API.
Endless possibilities.

REST API without signup
MCP server for AI agents (Claude, Cursor, Zed)
TypeScript SDK — npm install @orsf/sdk
Webhooks on company changescoming soon
Python & Go SDKscoming soon
Free tier 1,000 lookups/mo, paid from €7/mo

View API documentation

GET /v1/companies/11111111
Host: api.orsf.sk
Accept: application/json

{
  "name": "Vymyslená firma s.r.o.",
  "nationalId": "11111111",
  "statusCode": "active"
}

Geografia