Execute a standard UCP commerce flow
The typical sequence for an agent to complete a purchase using the UCP MCP endpoint is as follows:
- Discover: Call
GET /.well-known/ucpto confirm capabilities. - Search: Use the
search_catalogtool to find products. - Cart: Use
create_cartto add items. - Checkout: Use
create_checkoutto initiate the purchase. - Fulfill: Use
update_checkoutto specify shipping address and method. - Complete: Use
complete_checkoutto finalize the order (requires buyer approval).