diff --git a/go.mod b/go.mod
index 3cc5e8d..76e2497 100644
--- a/go.mod
+++ b/go.mod
@@ -8,7 +8,7 @@ require (
 	github.com/charmbracelet/lipgloss v1.1.0
 	github.com/mergestat/timediff v0.0.4
 	github.com/shopspring/decimal v1.4.0
-	github.com/sumup/sumup-go v0.11.1
+	github.com/sumup/sumup-go v0.13.0
 	github.com/urfave/cli/v3 v3.6.2
 	golang.org/x/term v0.39.0
 )
diff --git a/go.sum b/go.sum
index 8b5a39b..823f534 100644
--- a/go.sum
+++ b/go.sum
@@ -49,8 +49,8 @@ github.com/shopspring/decimal v1.4.0 h1:bxl37RwXBklmTi0C79JfXCEBD1cqqHt0bbgBAGFp
 github.com/shopspring/decimal v1.4.0/go.mod h1:gawqmDU56v4yIKSwfBSFip1HdCCXN8/+DMd9qYNcwME=
 github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
 github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
-github.com/sumup/sumup-go v0.11.1 h1:jGthnT8V/QIllOoF4pE9kwS000AntdtEa4UTaejeX/I=
-github.com/sumup/sumup-go v0.11.1/go.mod h1:UgT9aaxvUBrAiRpunqyb1zi5v/+1z+6Lr6p6bgL8EYI=
+github.com/sumup/sumup-go v0.13.0 h1:35Xpv8cNLS5O02voKgwgks8Gz2QU53Ek8emlOyVuvkU=
+github.com/sumup/sumup-go v0.13.0/go.mod h1:UgT9aaxvUBrAiRpunqyb1zi5v/+1z+6Lr6p6bgL8EYI=
 github.com/urfave/cli/v3 v3.6.2 h1:lQuqiPrZ1cIz8hz+HcrG0TNZFxU70dPZ3Yl+pSrH9A8=
 github.com/urfave/cli/v3 v3.6.2/go.mod h1:ysVLtOEmg2tOy6PknnYVhDoouyC/6N42TMeoMzskhso=
 github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e h1:JVG44RsyaB9T2KIHavMF/ppJZNG9ZpyihvCd0w101no=
diff --git a/internal/commands/checkouts/checkouts.go b/internal/commands/checkouts/checkouts.go
index 263e541..0ddc176 100644
--- a/internal/commands/checkouts/checkouts.go
+++ b/internal/commands/checkouts/checkouts.go
@@ -99,7 +99,7 @@ func listCheckouts(ctx context.Context, cmd *cli.Command) error {
 	if err != nil {
 		return err
 	}
-	params := checkouts.ListCheckoutsParams{}
+	params := checkouts.ListParams{}
 	if ref := cmd.String("checkout-reference"); ref != "" {
 		params.CheckoutReference = &ref
 	}
@@ -153,7 +153,7 @@ func createCheckout(ctx context.Context, cmd *cli.Command) error {
 		return err
 	}
 
-	body := checkouts.CreateCheckoutBody{
+	body := checkouts.Create{
 		CheckoutReference: cmd.String("reference"),
 		Amount:            float32(cmd.Float64("amount")),
 		Currency:          parsedCurrency,
@@ -173,7 +173,7 @@ func createCheckout(ctx context.Context, cmd *cli.Command) error {
 		body.CustomerID = &value
 	}
 	if value := cmd.String("purpose"); value != "" {
-		purpose := checkouts.CreateCheckoutBodyPurpose(value)
+		purpose := checkouts.CreatePurpose(value)
 		body.Purpose = &purpose
 	}
 
diff --git a/internal/commands/context/context.go b/internal/commands/context/context.go
index f5f6a70..541cc4d 100644
--- a/internal/commands/context/context.go
+++ b/internal/commands/context/context.go
@@ -148,7 +148,7 @@ func debounce() tea.Cmd {
 func (m model) searchMemberships(query string, parentID string, parentType memberships.ResourceType) tea.Cmd {
 	return func() tea.Msg {
 		status := shared.MembershipStatusAccepted
-		params := memberships.ListMembershipsParams{
+		params := memberships.ListParams{
 			Status: &status,
 		}
 
@@ -378,7 +378,7 @@ func setContext(ctx context.Context, cmd *cli.Command) error {
 	message.Notify("Fetching your memberships...")
 
 	status := shared.MembershipStatusAccepted
-	params := memberships.ListMembershipsParams{
+	params := memberships.ListParams{
 		Status: &status,
 	}
 
diff --git a/internal/commands/members/members.go b/internal/commands/members/members.go
index 1bd1196..b43b7a7 100644
--- a/internal/commands/members/members.go
+++ b/internal/commands/members/members.go
@@ -140,7 +140,7 @@ func listMembers(ctx context.Context, cmd *cli.Command) error {
 		return err
 	}
 
-	params := members.ListMerchantMembersParams{}
+	params := members.ListParams{}
 	if cmd.IsSet("offset") {
 		value := cmd.Int("offset")
 		params.Offset = &value
@@ -217,7 +217,7 @@ func createMember(ctx context.Context, cmd *cli.Command) error {
 	isManaged := true
 	password := secret.New(cmd.String("password"))
 
-	body := members.CreateMerchantMemberBody{
+	body := members.Create{
 		Email:         cmd.String("email"),
 		IsManagedUser: &isManaged,
 		Password:      &password,
@@ -254,7 +254,7 @@ func inviteMember(ctx context.Context, cmd *cli.Command) error {
 		return err
 	}
 
-	body := members.CreateMerchantMemberBody{
+	body := members.Create{
 		Email: cmd.String("email"),
 		Roles: []string{"role_employee"},
 	}
diff --git a/internal/commands/memberships/memberships.go b/internal/commands/memberships/memberships.go
index abeb81a..5038807 100644
--- a/internal/commands/memberships/memberships.go
+++ b/internal/commands/memberships/memberships.go
@@ -65,7 +65,7 @@ func listMemberships(ctx context.Context, cmd *cli.Command) error {
 	if err != nil {
 		return err
 	}
-	params := memberships.ListMembershipsParams{}
+	params := memberships.ListParams{}
 	if cmd.IsSet("offset") {
 		value := cmd.Int("offset")
 		params.Offset = &value
diff --git a/internal/commands/payouts/payouts.go b/internal/commands/payouts/payouts.go
index bcfc894..8abcce5 100644
--- a/internal/commands/payouts/payouts.go
+++ b/internal/commands/payouts/payouts.go
@@ -69,7 +69,7 @@ func listPayouts(ctx context.Context, cmd *cli.Command) error {
 	if err != nil {
 		return err
 	}
-	params := payouts.ListPayoutsV1Params{
+	params := payouts.ListParams{
 		StartDate: startDate,
 		EndDate:   endDate,
 	}
diff --git a/internal/commands/readers/readers.go b/internal/commands/readers/readers.go
index 9c0bd0c..0764d88 100644
--- a/internal/commands/readers/readers.go
+++ b/internal/commands/readers/readers.go
@@ -198,7 +198,7 @@ func addReader(ctx context.Context, cmd *cli.Command) error {
 	if err != nil {
 		return err
 	}
-	body := readers.CreateReaderBody{
+	body := readers.Create{
 		PairingCode: readers.ReaderPairingCode(cmd.String("pairing-code")),
 		Name:        readers.ReaderName(cmd.String("name")),
 	}
@@ -269,8 +269,8 @@ func readerCheckout(ctx context.Context, cmd *cli.Command) error {
 		return fmt.Errorf("amount is too large to convert into minor units")
 	}
 
-	body := readers.CreateReaderCheckoutBody{
-		TotalAmount: readers.CreateReaderCheckoutBodyTotalAmount{
+	body := readers.CreateCheckout{
+		TotalAmount: readers.CreateCheckoutTotalAmount{
 			Currency:  currency.Code(parsedCurrency),
 			MinorUnit: cmd.Int("minor-unit"),
 			Value:     int(value),
@@ -284,7 +284,7 @@ func readerCheckout(ctx context.Context, cmd *cli.Command) error {
 		body.ReturnURL = &returnURL
 	}
 	if cardType := cmd.String("card-type"); cardType != "" {
-		ct := readers.CreateReaderCheckoutBodyCardType(cardType)
+		ct := readers.CreateCheckoutCardType(cardType)
 		body.CardType = &ct
 	}
 	if cmd.IsSet("installments") {
@@ -341,7 +341,7 @@ func readerStatus(ctx context.Context, cmd *cli.Command) error {
 		return err
 	}
 
-	response, err := appCtx.Client.Readers.GetStatus(ctx, cmd.String("merchant-code"), readerID, readers.GetReaderStatusParams{})
+	response, err := appCtx.Client.Readers.GetStatus(ctx, cmd.String("merchant-code"), readerID, readers.GetStatusParams{})
 	if err != nil {
 		return fmt.Errorf("get reader status: %w", err)
 	}
@@ -380,7 +380,7 @@ func readerStatusBatteryLevel(v *float32) string {
 	return fmt.Sprintf("%.0f%%", *v)
 }
 
-func buildAffiliatePayload(cmd *cli.Command) (*readers.CreateReaderCheckoutBodyAffiliate, error) {
+func buildAffiliatePayload(cmd *cli.Command) (*readers.CreateCheckoutAffiliate, error) {
 	appID := cmd.String("affiliate-app-id")
 	key := cmd.String("affiliate-key")
 	foreignID := cmd.String("affiliate-foreign-transaction-id")
@@ -390,7 +390,7 @@ func buildAffiliatePayload(cmd *cli.Command) (*readers.CreateReaderCheckoutBodyA
 	if appID == "" || key == "" || foreignID == "" {
 		return nil, fmt.Errorf("affiliate requires --affiliate-app-id, --affiliate-key, and --affiliate-foreign-transaction-id")
 	}
-	return &readers.CreateReaderCheckoutBodyAffiliate{
+	return &readers.CreateCheckoutAffiliate{
 		AppID:                appID,
 		Key:                  key,
 		ForeignTransactionID: foreignID,
diff --git a/internal/commands/receipts/receipts.go b/internal/commands/receipts/receipts.go
index 017f771..7b086ea 100644
--- a/internal/commands/receipts/receipts.go
+++ b/internal/commands/receipts/receipts.go
@@ -57,7 +57,7 @@ func getReceipt(ctx context.Context, cmd *cli.Command) error {
 	if err != nil {
 		return err
 	}
-	params := receipts.GetReceiptParams{
+	params := receipts.GetParams{
 		Mid: merchantCode,
 	}
 	if cmd.IsSet("transaction-event-id") {
diff --git a/internal/commands/transactions/transactions.go b/internal/commands/transactions/transactions.go
index ab32067..bbddda0 100644
--- a/internal/commands/transactions/transactions.go
+++ b/internal/commands/transactions/transactions.go
@@ -111,7 +111,7 @@ func listTransactions(ctx context.Context, cmd *cli.Command) error {
 		return err
 	}
 
-	params := transactions.ListTransactionsV21Params{}
+	params := transactions.ListParams{}
 	if cmd.IsSet("limit") {
 		value := cmd.Int("limit")
 		params.Limit = &value
@@ -218,7 +218,7 @@ func getTransaction(ctx context.Context, cmd *cli.Command) error {
 	if err != nil {
 		return err
 	}
-	params := transactions.GetTransactionV21Params{
+	params := transactions.GetParams{
 		ID: &transactionID,
 	}