validate_polish_id

MCP tool from MCP Polish Biz by M8T-Jacob

Validate a NIP, PESEL, REGON, KRS, or IBAN/NRB and return its normalized form. Offline, no network.

How to use it

validate_polish_id is exposed by the MCP Polish Biz MCP server. Add the server to your MCP client (Claude Desktop, Cursor, Windsurf and others), and the validate_polish_id tool becomes available to the model automatically. See the full listing for setup details and every tool this server provides.

Install MCP Polish Biz

$npx -y @m8t-jacob/mcp-polish-biz

FULL MCP POLISH BIZ LISTING

Other tools in MCP Polish Biz (4)

check_vat_whitelist

Look up a NIP on the Polish VAT whitelist ("Biała lista podatników VAT"): status, name, accounts.

check_vies

Validate an EU VAT number via VIES, returning company name/address when available.

convert_currency

Convert an amount between two currencies using NBP mid rates.

get_exchange_rate

Get the official NBP mid exchange rate for a currency against PLN, for today or a given date.