About Polish Biz
Polish Biz is an MCP server in the Commerce category: mCP (Model Context Protocol) server exposing Polish business data tools to AI agents: NIP/PESEL/REGON/IBAN/KRS validation, VAT whitelist, EU VIES lookup, and NBP exchange rates.
Install
claude mcp add polish-biz -- npx -y @m8t-jacob/mcp-polish-biznpx -y @m8t-jacob/mcp-polish-bizThis server has no ConduID identity, so agent calls to it are not receipted. Pin the version you install and review the source before granting it credentials.
Tools (5)
check_vat_whitelistLook up a NIP on the Polish VAT whitelist ("Biała lista podatników VAT"): status, name, accounts.
Parameters not published.
check_viesValidate an EU VAT number via VIES, returning company name/address when available.
Parameters not published.
convert_currencyConvert an amount between two currencies using NBP mid rates.
Parameters not published.
get_exchange_rateGet the official NBP mid exchange rate for a currency against PLN, for today or a given date.
Parameters not published.
validate_polish_idValidate a NIP, PESEL, REGON, KRS, or IBAN/NRB and return its normalized form. Offline, no network.
Parameters not published.
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