Universal Commerce Protocol support

Last Price now speaks UCP natively. AI agents discover capabilities at /.well-known/ucp, create checkout sessions, get optimized pricing quotes, and complete purchases, all through one standard protocol.

Last Price implements the Universal Commerce Protocol (UCP) so AI shopping agents and commerce platforms can interact with your pricing without custom integration code.

Standard discovery at `/.well-known/ucp` advertises checkout and pricing compute capabilities with protocol version negotiation

Full checkout session lifecycle: create, read, update, complete, and cancel, with idempotency on every mutating call

Pricing quotes flow through the same compute pipeline, so routing policies, metering, and cost tracing all apply automatically

UCP-Agent header negotiation ensures forward compatibility as the protocol evolves

Fulfillment and discount extensions are supported from day one

New dashboard page under Commerce shows all UCP checkout sessions with status, buyer, totals, and line item count