cart and checkout

pkg/promotions/mcp/mcp.go

@@ -133,6 +133,15 @@ func (s *Server) initialize(params json.RawMessage) map[string]any {
 	}
 }
 
+// defaultVatRate returns the default VAT rate from the eval service's
+// configured tax provider, falling back to 25 if none is set.
+func (s *Server) defaultVatRate() float32 {
+	if s.eval == nil || s.eval.DefaultTaxProvider == nil {
+		return 25
+	}
+	return float32(s.eval.DefaultTaxProvider.DefaultTaxRate(""))
+}
+
 func isBatch(body []byte) bool {
 	for _, b := range body {
 		switch b {