Ares

Connects Claude to the Czech Business Register (ARES) and related government databases. You get nine tools: lookup by IČO, full-text company search, statutory body extraction, VAT status checks, transparent account listings, and address-based queries. Validates DIČ checksums and tracks company history (name changes, address moves). Built for KYC workflows where you need to screen Czech suppliers or invoice issuers before payment. Part of a larger cz-agents suite that includes sanctions screening, insolvency checks, and ČNB exchange rates. The aggregator package bundles these into due diligence reports with risk scoring. Works over stdio or streamable HTTP. The developer offers a hosted version with nominee detection and monitoring, but the open source package hits the public ARES API directly.