Taxjar MCP integration

It can. List Nexus Regions returns the regions where your TaxJar account has nexus, and Calculate Sales Tax for an Order takes nexus addresses as an input, so Lyro quotes against where you are registered instead of assuming every destination state applies.

As customer records carrying exemption information. Create Customer registers one with its exemption type, name, and address, Update Customer changes that exemption later, and Show Customer returns the full record, which List Customers on its own does not.

Validate VAT Number checks an EU VAT identification number against the VIES database, confirming both the format and whether the number is actually registered. It is a validation lookup rather than an EU tax calculation, useful when a customer claims a VAT registration before a B2B sale.

That is what the TaxJar API returns. List Customers, List Order Transactions, and List refund transactions each return arrays of IDs, so Lyro follows up with Show Customer, Show Order Transaction, or Show Refund Transaction to get the names, addresses, amounts, and line items behind the one that matters.