feat: Anthropic oauth/setup-token账号支持自定义转发URL

backend/internal/handler/dto/mappers.go

@@ -268,6 +268,14 @@ func AccountFromServiceShallow(a *service.Account) *Account {
 			target := a.GetCacheTTLOverrideTarget()
 			out.CacheTTLOverrideTarget = &target
 		}
+		// 自定义 Base URL 中继转发
+		if a.IsCustomBaseURLEnabled() {
+			enabled := true
+			out.CustomBaseURLEnabled = &enabled
+			if customURL := a.GetCustomBaseURL(); customURL != "" {
+				out.CustomBaseURL = &customURL
+			}
+		}
 	}
 
 	// 提取账号配额限制（apikey / bedrock 类型有效）

backend/internal/handler/dto/types.go

@@ -198,6 +198,10 @@ type Account struct {
 	CacheTTLOverrideEnabled *bool   `json:"cache_ttl_override_enabled,omitempty"`
 	CacheTTLOverrideTarget  *string `json:"cache_ttl_override_target,omitempty"`
 
+	// 自定义 Base URL 中继转发（仅 Anthropic OAuth/SetupToken 账号有效）
+	CustomBaseURLEnabled *bool   `json:"custom_base_url_enabled,omitempty"`
+	CustomBaseURL        *string `json:"custom_base_url,omitempty"`
+
 	// API Key 账号配额限制
 	QuotaLimit       *float64 `json:"quota_limit,omitempty"`
 	QuotaUsed        *float64 `json:"quota_used,omitempty"`

backend/internal/service/account.go

@@ -1229,6 +1229,28 @@ func (a *Account) IsSessionIDMaskingEnabled() bool {
 	return false
 }
 
+// IsCustomBaseURLEnabled 检查是否启用自定义 base URL 中继转发
+// 仅适用于 Anthropic OAuth/SetupToken 类型账号
+func (a *Account) IsCustomBaseURLEnabled() bool {
+	if !a.IsAnthropicOAuthOrSetupToken() {
+		return false
+	}
+	if a.Extra == nil {
+		return false
+	}
+	if v, ok := a.Extra["custom_base_url_enabled"]; ok {
+		if enabled, ok := v.(bool); ok {
+			return enabled
+		}
+	}
+	return false
+}
+
+// GetCustomBaseURL 返回自定义中继服务的 base URL
+func (a *Account) GetCustomBaseURL() string {
+	return a.GetExtraString("custom_base_url")
+}
+
 // IsCacheTTLOverrideEnabled 检查是否启用缓存 TTL 强制替换
 // 仅适用于 Anthropic OAuth/SetupToken 类型账号
 // 启用后将所有 cache creation tokens 归入指定的 TTL 类型（5m 或 1h）

backend/internal/service/gateway_service.go

@@ -12,6 +12,7 @@ import (
 	"log/slog"
 	mathrand "math/rand"
 	"net/http"
+	"net/url"
 	"os"
 	"path/filepath"
 	"regexp"
@@ -4150,10 +4151,12 @@ func (s *GatewayService) Forward(ctx context.Context, c *gin.Context, account *A
 		return nil, err
 	}
 
-	// 获取代理URL
+	// 获取代理URL（自定义 base URL 模式下，proxy 通过 buildCustomRelayURL 作为查询参数传递）
 	proxyURL := ""
 	if account.ProxyID != nil && account.Proxy != nil {
-		proxyURL = account.Proxy.URL()
+		if !account.IsCustomBaseURLEnabled() || account.GetCustomBaseURL() == "" {
+			proxyURL = account.Proxy.URL()
+		}
 	}
 
 	// 解析 TLS 指纹 profile（同一请求生命周期内不变，避免重试循环中重复解析）
@@ -5628,6 +5631,16 @@ func (s *GatewayService) buildUpstreamRequest(ctx context.Context, c *gin.Contex
 			}
 			targetURL = validatedURL + "/v1/messages?beta=true"
 		}
+	} else if account.IsCustomBaseURLEnabled() {
+		customURL := account.GetCustomBaseURL()
+		if customURL == "" {
+			return nil, fmt.Errorf("custom_base_url is enabled but not configured for account %d", account.ID)
+		}
+		validatedURL, err := s.validateUpstreamBaseURL(customURL)
+		if err != nil {
+			return nil, err
+		}
+		targetURL = s.buildCustomRelayURL(validatedURL, "/v1/messages", account)
 	}
 
 	clientHeaders := http.Header{}
@@ -8063,10 +8076,12 @@ func (s *GatewayService) ForwardCountTokens(ctx context.Context, c *gin.Context,
 		return err
 	}
 
-	// 获取代理URL
+	// 获取代理URL（自定义 base URL 模式下，proxy 通过 buildCustomRelayURL 作为查询参数传递）
 	proxyURL := ""
 	if account.ProxyID != nil && account.Proxy != nil {
-		proxyURL = account.Proxy.URL()
+		if !account.IsCustomBaseURLEnabled() || account.GetCustomBaseURL() == "" {
+			proxyURL = account.Proxy.URL()
+		}
 	}
 
 	// 发送请求
@@ -8345,6 +8360,16 @@ func (s *GatewayService) buildCountTokensRequest(ctx context.Context, c *gin.Con
 			}
 			targetURL = validatedURL + "/v1/messages/count_tokens?beta=true"
 		}
+	} else if account.IsCustomBaseURLEnabled() {
+		customURL := account.GetCustomBaseURL()
+		if customURL == "" {
+			return nil, fmt.Errorf("custom_base_url is enabled but not configured for account %d", account.ID)
+		}
+		validatedURL, err := s.validateUpstreamBaseURL(customURL)
+		if err != nil {
+			return nil, err
+		}
+		targetURL = s.buildCustomRelayURL(validatedURL, "/v1/messages/count_tokens", account)
 	}
 
 	clientHeaders := http.Header{}
@@ -8471,6 +8496,19 @@ func (s *GatewayService) countTokensError(c *gin.Context, status int, errType, m
 	})
 }
 
+// buildCustomRelayURL 构建自定义中继转发 URL
+// 在 path 后附加 beta=true 和可选的 proxy 查询参数
+func (s *GatewayService) buildCustomRelayURL(baseURL, path string, account *Account) string {
+	u := strings.TrimRight(baseURL, "/") + path + "?beta=true"
+	if account.ProxyID != nil && account.Proxy != nil {
+		proxyURL := account.Proxy.URL()
+		if proxyURL != "" {
+			u += "&proxy=" + url.QueryEscape(proxyURL)
+		}
+	}
+	return u
+}
+
 func (s *GatewayService) validateUpstreamBaseURL(raw string) (string, error) {
 	if s.cfg != nil && !s.cfg.Security.URLAllowlist.Enabled {
 		normalized, err := urlvalidator.ValidateURLFormat(raw, s.cfg.Security.URLAllowlist.AllowInsecureHTTP)

frontend/src/components/account/CreateAccountModal.vue

@@ -2245,6 +2245,41 @@
             </p>
           </div>
         </div>
+
+        <!-- Custom Base URL Relay -->
+        <div class="rounded-lg border border-gray-200 p-4 dark:border-dark-600">
+          <div class="flex items-center justify-between">
+            <div>
+              <label class="input-label mb-0">{{ t('admin.accounts.quotaControl.customBaseUrl.label') }}</label>
+              <p class="mt-1 text-xs text-gray-500 dark:text-gray-400">
+                {{ t('admin.accounts.quotaControl.customBaseUrl.hint') }}
+              </p>
+            </div>
+            <button
+              type="button"
+              @click="customBaseUrlEnabled = !customBaseUrlEnabled"
+              :class="[
+                'relative inline-flex h-6 w-11 flex-shrink-0 cursor-pointer rounded-full border-2 border-transparent transition-colors duration-200 ease-in-out focus:outline-none focus:ring-2 focus:ring-primary-500 focus:ring-offset-2',
+                customBaseUrlEnabled ? 'bg-primary-600' : 'bg-gray-200 dark:bg-dark-600'
+              ]"
+            >
+              <span
+                :class="[
+                  'pointer-events-none inline-block h-5 w-5 transform rounded-full bg-white shadow ring-0 transition duration-200 ease-in-out',
+                  customBaseUrlEnabled ? 'translate-x-5' : 'translate-x-0'
+                ]"
+              />
+            </button>
+          </div>
+          <div v-if="customBaseUrlEnabled" class="mt-3">
+            <input
+              v-model="customBaseUrl"
+              type="text"
+              class="input"
+              :placeholder="t('admin.accounts.quotaControl.customBaseUrl.urlHint')"
+            />
+          </div>
+        </div>
       </div>
 
       <div>
@@ -3095,6 +3130,8 @@ const tlsFingerprintProfiles = ref<{ id: number; name: string }[]>([])
 const sessionIdMaskingEnabled = ref(false)
 const cacheTTLOverrideEnabled = ref(false)
 const cacheTTLOverrideTarget = ref<string>('5m')
+const customBaseUrlEnabled = ref(false)
+const customBaseUrl = ref('')
 
 // Gemini tier selection (used as fallback when auto-detection is unavailable/fails)
 const geminiTierGoogleOne = ref<'google_one_free' | 'google_ai_pro' | 'google_ai_ultra'>('google_one_free')
@@ -3765,6 +3802,8 @@ const resetForm = () => {
   sessionIdMaskingEnabled.value = false
   cacheTTLOverrideEnabled.value = false
   cacheTTLOverrideTarget.value = '5m'
+  customBaseUrlEnabled.value = false
+  customBaseUrl.value = ''
   allowOverages.value = false
   antigravityAccountType.value = 'oauth'
   upstreamBaseUrl.value = ''
@@ -4856,6 +4895,12 @@ const handleAnthropicExchange = async (authCode: string) => {
       extra.cache_ttl_override_target = cacheTTLOverrideTarget.value
     }
 
+    // Add custom base URL settings
+    if (customBaseUrlEnabled.value && customBaseUrl.value.trim()) {
+      extra.custom_base_url_enabled = true
+      extra.custom_base_url = customBaseUrl.value.trim()
+    }
+
     const credentials: Record<string, unknown> = { ...tokenInfo }
     applyInterceptWarmup(credentials, interceptWarmupRequests.value, 'create')
     await createAccountAndFinish(form.platform, addMethod.value as AccountType, credentials, extra)
@@ -4974,6 +5019,12 @@ const handleCookieAuth = async (sessionKey: string) => {
           extra.cache_ttl_override_target = cacheTTLOverrideTarget.value
         }
 
+        // Add custom base URL settings
+        if (customBaseUrlEnabled.value && customBaseUrl.value.trim()) {
+          extra.custom_base_url_enabled = true
+          extra.custom_base_url = customBaseUrl.value.trim()
+        }
+
         const accountName = keys.length > 1 ? `${form.name} #${i + 1}` : form.name
 
         const credentials: Record<string, unknown> = { ...tokenInfo }

frontend/src/components/account/EditAccountModal.vue

@@ -1580,6 +1580,41 @@
             </p>
           </div>
         </div>
+
+        <!-- Custom Base URL Relay -->
+        <div class="rounded-lg border border-gray-200 p-4 dark:border-dark-600">
+          <div class="flex items-center justify-between">
+            <div>
+              <label class="input-label mb-0">{{ t('admin.accounts.quotaControl.customBaseUrl.label') }}</label>
+              <p class="mt-1 text-xs text-gray-500 dark:text-gray-400">
+                {{ t('admin.accounts.quotaControl.customBaseUrl.hint') }}
+              </p>
+            </div>
+            <button
+              type="button"
+              @click="customBaseUrlEnabled = !customBaseUrlEnabled"
+              :class="[
+                'relative inline-flex h-6 w-11 flex-shrink-0 cursor-pointer rounded-full border-2 border-transparent transition-colors duration-200 ease-in-out focus:outline-none focus:ring-2 focus:ring-primary-500 focus:ring-offset-2',
+                customBaseUrlEnabled ? 'bg-primary-600' : 'bg-gray-200 dark:bg-dark-600'
+              ]"
+            >
+              <span
+                :class="[
+                  'pointer-events-none inline-block h-5 w-5 transform rounded-full bg-white shadow ring-0 transition duration-200 ease-in-out',
+                  customBaseUrlEnabled ? 'translate-x-5' : 'translate-x-0'
+                ]"
+              />
+            </button>
+          </div>
+          <div v-if="customBaseUrlEnabled" class="mt-3">
+            <input
+              v-model="customBaseUrl"
+              type="text"
+              class="input"
+              :placeholder="t('admin.accounts.quotaControl.customBaseUrl.urlHint')"
+            />
+          </div>
+        </div>
       </div>
 
       <div class="border-t border-gray-200 pt-4 dark:border-dark-600">
@@ -1854,6 +1889,8 @@ const tlsFingerprintProfiles = ref<{ id: number; name: string }[]>([])
 const sessionIdMaskingEnabled = ref(false)
 const cacheTTLOverrideEnabled = ref(false)
 const cacheTTLOverrideTarget = ref<string>('5m')
+const customBaseUrlEnabled = ref(false)
+const customBaseUrl = ref('')
 
 // OpenAI 自动透传开关（OAuth/API Key）
 const openaiPassthroughEnabled = ref(false)
@@ -2482,6 +2519,8 @@ function loadQuotaControlSettings(account: Account) {
   sessionIdMaskingEnabled.value = false
   cacheTTLOverrideEnabled.value = false
   cacheTTLOverrideTarget.value = '5m'
+  customBaseUrlEnabled.value = false
+  customBaseUrl.value = ''
 
   // Only applies to Anthropic OAuth/SetupToken accounts
   if (account.platform !== 'anthropic' || (account.type !== 'oauth' && account.type !== 'setup-token')) {
@@ -2528,6 +2567,12 @@ function loadQuotaControlSettings(account: Account) {
     cacheTTLOverrideEnabled.value = true
     cacheTTLOverrideTarget.value = account.cache_ttl_override_target || '5m'
   }
+
+  // Load custom base URL setting
+  if (account.custom_base_url_enabled === true) {
+    customBaseUrlEnabled.value = true
+    customBaseUrl.value = account.custom_base_url || ''
+  }
 }
 
 function formatTempUnschedKeywords(value: unknown) {
@@ -2980,6 +3025,15 @@ const handleSubmit = async () => {
         delete newExtra.cache_ttl_override_target
       }
 
+      // Custom base URL relay setting
+      if (customBaseUrlEnabled.value && customBaseUrl.value.trim()) {
+        newExtra.custom_base_url_enabled = true
+        newExtra.custom_base_url = customBaseUrl.value.trim()
+      } else {
+        delete newExtra.custom_base_url_enabled
+        delete newExtra.custom_base_url
+      }
+
       updatePayload.extra = newExtra
     }
 

frontend/src/i18n/locales/en.ts

@@ -2318,6 +2318,11 @@ export default {
           target: 'Target TTL',
           targetHint: 'Select the TTL tier for billing'
         },
+        customBaseUrl: {
+          label: 'Custom Relay URL',
+          hint: 'Forward requests to a custom relay service. Proxy URL will be passed as a query parameter.',
+          urlHint: 'Relay service URL (e.g., https://relay.example.com)',
+        },
         clientAffinity: {
           label: 'Client Affinity Scheduling',
           hint: 'When enabled, new sessions prefer accounts previously used by this client to reduce account switching'

frontend/src/i18n/locales/zh.ts

@@ -2462,6 +2462,11 @@ export default {
           target: '目标 TTL',
           targetHint: '选择计费使用的 TTL 类型'
         },
+        customBaseUrl: {
+          label: '自定义转发地址',
+          hint: '启用后将请求转发到自定义中继服务，代理地址将作为 URL 参数传递给中继服务',
+          urlHint: '中继服务地址（如 https://relay.example.com）',
+        },
         clientAffinity: {
           label: '客户端亲和调度',
           hint: '启用后，新会话会优先调度到该客户端之前使用过的账号，避免频繁切换账号'

frontend/src/types/index.ts

@@ -734,6 +734,10 @@ export interface Account {
   cache_ttl_override_enabled?: boolean | null
   cache_ttl_override_target?: string | null
 
+  // 自定义 Base URL 中继转发（仅 Anthropic OAuth/SetupToken 账号有效）
+  custom_base_url_enabled?: boolean | null
+  custom_base_url?: string | null
+
   // 客户端亲和调度（仅 Anthropic/Antigravity 平台有效）
   // 启用后新会话会优先调度到客户端之前使用过的账号
   client_affinity_enabled?: boolean | null