diff --git a/apps/api/internal/config/config.go b/apps/api/internal/config/config.go
index 273c1e8..11e4248 100644
--- a/apps/api/internal/config/config.go
+++ b/apps/api/internal/config/config.go
@@ -22,6 +22,7 @@ type Config struct {
 	ServerMainBaseURL               string
 	ServerMainInternalToken         string
 	PublicBaseURL                   string
+	WebBaseURL                      string
 	LocalGeneratedStorageDir        string
 	LocalUploadedStorageDir         string
 	LocalTempAssetTTLHours          int
@@ -49,6 +50,7 @@ func Load() Config {
 		),
 		ServerMainInternalToken:     env("SERVER_MAIN_INTERNAL_TOKEN", ""),
 		PublicBaseURL:               strings.TrimRight(env("AI_GATEWAY_PUBLIC_BASE_URL", env("PUBLIC_BASE_URL", "")), "/"),
+		WebBaseURL:                  strings.TrimRight(env("AI_GATEWAY_WEB_BASE_URL", env("GATEWAY_WEB_BASE_URL", env("PUBLIC_WEB_BASE_URL", ""))), "/"),
 		LocalGeneratedStorageDir:    env("AI_GATEWAY_GENERATED_STORAGE_DIR", env("LOCAL_GENERATED_STORAGE_DIR", env("AI_GATEWAY_STATIC_STORAGE_DIR", DefaultLocalGeneratedStorageDir))),
 		LocalUploadedStorageDir:     env("AI_GATEWAY_UPLOADED_STORAGE_DIR", env("LOCAL_UPLOADED_STORAGE_DIR", DefaultLocalUploadedStorageDir)),
 		LocalTempAssetTTLHours:      envInt("AI_GATEWAY_LOCAL_TEMP_ASSET_TTL_HOURS", 24),
diff --git a/apps/api/internal/httpapi/core_flow_integration_test.go b/apps/api/internal/httpapi/core_flow_integration_test.go
index 083c325..c9e9fce 100644
--- a/apps/api/internal/httpapi/core_flow_integration_test.go
+++ b/apps/api/internal/httpapi/core_flow_integration_test.go
@@ -773,10 +773,20 @@ WHERE reference_type = 'gateway_task'
 			Balance  float64 `json:"balance"`
 		} `json:"primaryAccount"`
 	}
-	doJSON(t, server.URL, http.MethodGet, "/api/workspace/wallet", loginResponse.AccessToken, nil, http.StatusOK, &walletSummary)
+	doJSON(t, server.URL, http.MethodGet, "/api/workspace/wallet?currency=resource", loginResponse.AccessToken, nil, http.StatusOK, &walletSummary)
 	if walletSummary.PrimaryAccount.Currency != "resource" || !floatNear(walletSummary.PrimaryAccount.Balance, walletBalanceAfter) || len(walletSummary.Accounts) == 0 {
 		t.Fatalf("workspace wallet should expose current resource balance, got %+v want balance=%f", walletSummary, walletBalanceAfter)
 	}
+	var desktopConfig struct {
+		Billing struct {
+			GatewayBaseURL     string `json:"gatewayBaseUrl"`
+			GatewayBillingPath string `json:"gatewayBillingPath"`
+		} `json:"billing"`
+	}
+	doJSON(t, server.URL, http.MethodGet, "/api/workspace/desktop-config", loginResponse.AccessToken, nil, http.StatusOK, &desktopConfig)
+	if desktopConfig.Billing.GatewayBillingPath != "/workspace/billing" || desktopConfig.Billing.GatewayBaseURL == "" {
+		t.Fatalf("desktop config should expose gateway billing route, got %+v", desktopConfig)
+	}
 	var walletTransactions struct {
 		Items []struct {
 			TransactionType string  `json:"transactionType"`
diff --git a/apps/api/internal/httpapi/desktop_config_handlers.go b/apps/api/internal/httpapi/desktop_config_handlers.go
new file mode 100644
index 0000000..f806995
--- /dev/null
+++ b/apps/api/internal/httpapi/desktop_config_handlers.go
@@ -0,0 +1,55 @@
+package httpapi
+
+import (
+	"net/http"
+	"strings"
+)
+
+type desktopBillingConfigResponse struct {
+	GatewayBaseURL     string `json:"gatewayBaseUrl,omitempty"`
+	GatewayBillingPath string `json:"gatewayBillingPath"`
+}
+
+type desktopConfigResponse struct {
+	Billing desktopBillingConfigResponse `json:"billing"`
+}
+
+// getDesktopConfig godoc
+// @Summary 获取桌面端配置
+// @Description 返回桌面端需要的 Gateway Web 账单入口配置。
+// @Tags workspace
+// @Produce json
+// @Security BearerAuth
+// @Success 200 {object} desktopConfigResponse
+// @Failure 401 {object} ErrorEnvelope
+// @Router /api/workspace/desktop-config [get]
+func (s *Server) getDesktopConfig(w http.ResponseWriter, r *http.Request) {
+	writeJSON(w, http.StatusOK, desktopConfigResponse{
+		Billing: desktopBillingConfigResponse{
+			GatewayBaseURL: firstNonEmpty(
+				strings.TrimRight(strings.TrimSpace(s.cfg.WebBaseURL), "/"),
+				strings.TrimRight(strings.TrimSpace(s.cfg.PublicBaseURL), "/"),
+				requestOrigin(r),
+			),
+			GatewayBillingPath: "/workspace/billing",
+		},
+	})
+}
+
+func requestOrigin(r *http.Request) string {
+	host := strings.TrimSpace(r.Host)
+	if host == "" {
+		return ""
+	}
+	proto := strings.TrimSpace(r.Header.Get("X-Forwarded-Proto"))
+	if proto == "" {
+		proto = "http"
+	}
+	if comma := strings.Index(proto, ","); comma >= 0 {
+		proto = strings.TrimSpace(proto[:comma])
+	}
+	if proto == "" {
+		proto = "http"
+	}
+	return proto + "://" + host
+}
diff --git a/apps/api/internal/httpapi/server.go b/apps/api/internal/httpapi/server.go
index 7cb11fe..335b6f8 100644
--- a/apps/api/internal/httpapi/server.go
+++ b/apps/api/internal/httpapi/server.go
@@ -88,6 +88,7 @@ func NewServerWithContext(ctx context.Context, cfg config.Config, db *store.Stor
 	mux.Handle("PATCH /api/v1/api-keys/{apiKeyID}/disable", server.auth.Require(auth.PermissionBasic, http.HandlerFunc(server.disableAPIKey)))
 	mux.Handle("DELETE /api/v1/api-keys/{apiKeyID}", server.auth.Require(auth.PermissionBasic, http.HandlerFunc(server.deleteAPIKey)))
 	mux.Handle("GET /api/playground/api-keys", server.auth.Require(auth.PermissionBasic, http.HandlerFunc(server.listPlayableAPIKeys)))
+	mux.Handle("GET /api/workspace/desktop-config", server.auth.Require(auth.PermissionBasic, http.HandlerFunc(server.getDesktopConfig)))
 	mux.Handle("GET /api/workspace/user-groups", server.auth.Require(auth.PermissionBasic, http.HandlerFunc(server.listCurrentUserGroups)))
 	mux.Handle("GET /api/workspace/wallet", server.auth.Require(auth.PermissionBasic, http.HandlerFunc(server.getWallet)))
 	mux.Handle("GET /api/workspace/wallet/transactions", server.auth.Require(auth.PermissionBasic, http.HandlerFunc(server.listWalletTransactions)))
diff --git a/packages/contracts/src/index.ts b/packages/contracts/src/index.ts
index a367c63..d85714b 100644
--- a/packages/contracts/src/index.ts
+++ b/packages/contracts/src/index.ts
@@ -592,6 +592,13 @@ export interface WalletSummaryResponse {
   primaryAccount: GatewayWalletAccount;
 }
 
+export interface GatewayDesktopConfigResponse {
+  billing: {
+    gatewayBaseUrl?: string;
+    gatewayBillingPath: string;
+  };
+}
+
 export interface WalletAdjustmentResponse {
   account: GatewayWalletAccount;
   before: GatewayWalletAccount;