About FirmAPI
We provide reliable access to Slovak company data through a modern API.
Our Mission
FirmAPI was created to make accessing Slovak business register data simple and efficient. We believe that reliable company data should be easily accessible to developers and businesses.
Unified Access
One API to query data from 5+ government registers, instead of scraping multiple websites with inconsistent formats.
Accuracy First
Daily synchronization with authoritative sources ensures your application always works with current data.
Developer Experience
Clean REST API with JSON responses, comprehensive documentation, and predictable error handling.
Data you can rely on
1.2M+
Entities in RPO
350k+
Commercial register companies
Daily
Daily synchronization
5+
Data sources
Data Sources
We aggregate and cross-reference data from multiple authoritative Slovak and EU registers to provide a comprehensive view of each entity.
RPO
Register of Legal Entities
The primary register containing all legal entities in Slovakia. Synchronized daily via the slovensko.digital datahub API.
ORSR
Commercial Register
Official commercial register at orsr.sk providing shareholders, statutory bodies, share capital, and business activities.
RegisterÚZ
Register of Financial Statements
Source for tax identification numbers (DIČ). Cross-referenced with company IČO for tax data enrichment.
Finančná správa
Financial Administration
Official list of VAT payers (IČ DPH) published by the Slovak Financial Administration. Updated weekly from published datasets.
EU VIES
VAT Information Exchange System
European Commission SOAP service for real-time validation of EU VAT numbers across all member states.
Built for reliability
Our stack is optimized for fast responses, data integrity, and continuous availability.
Laravel
Application framework handling API routing, queue processing, and scheduled synchronization tasks.
MySQL
Primary data store holding 1.2M+ entity records with optimized indexes for fast lookups.
Redis
Caching layer and queue backend for background enrichment jobs and rate limiting.
Version Two s. r. o.
FirmAPI is developed and maintained by Version Two s. r. o., a software company based in Bratislava, Slovakia. We focus on building developer tools and data infrastructure for the Slovak market.
Ready to integrate?
Start using FirmAPI today. Free tier available with no credit card required.