diff --git a/src/routes/admin/index.js b/src/routes/admin/index.js
index c91aa5e7..0b8cbecd 100644
--- a/src/routes/admin/index.js
+++ b/src/routes/admin/index.js
@@ -24,6 +24,7 @@ const usageStatsRoutes = require('./usageStats')
 const systemRoutes = require('./system')
 const concurrencyRoutes = require('./concurrency')
 const claudeRelayConfigRoutes = require('./claudeRelayConfig')
+const syncRoutes = require('./sync')
 
 // 挂载所有子路由
 // 使用完整路径的模块（直接挂载到根路径）
@@ -39,6 +40,7 @@ router.use('/', usageStatsRoutes)
 router.use('/', systemRoutes)
 router.use('/', concurrencyRoutes)
 router.use('/', claudeRelayConfigRoutes)
+router.use('/', syncRoutes)
 
 // 使用相对路径的模块（需要指定基础路径前缀）
 router.use('/account-groups', accountGroupsRoutes)
diff --git a/src/routes/admin/sync.js b/src/routes/admin/sync.js
new file mode 100644
index 00000000..e92cfc62
--- /dev/null
+++ b/src/routes/admin/sync.js
@@ -0,0 +1,448 @@
+/**
+ * Admin Routes - Sync / Export (for migration)
+ * Exports account data (including secrets) for safe server-to-server syncing.
+ */
+
+const express = require('express')
+const router = express.Router()
+
+const { authenticateAdmin } = require('../../middleware/auth')
+const redis = require('../../models/redis')
+const claudeAccountService = require('../../services/claudeAccountService')
+const claudeConsoleAccountService = require('../../services/claudeConsoleAccountService')
+const openaiAccountService = require('../../services/openaiAccountService')
+const openaiResponsesAccountService = require('../../services/openaiResponsesAccountService')
+const logger = require('../../utils/logger')
+
+function toBool(value, defaultValue = false) {
+  if (value === undefined || value === null || value === '') {
+    return defaultValue
+  }
+  if (value === true || value === 'true') {
+    return true
+  }
+  if (value === false || value === 'false') {
+    return false
+  }
+  return defaultValue
+}
+
+function normalizeProxy(proxy) {
+  if (!proxy || typeof proxy !== 'object') {
+    return null
+  }
+
+  const protocol = proxy.protocol || proxy.type || proxy.scheme || ''
+  const host = proxy.host || ''
+  const port = Number(proxy.port || 0)
+
+  if (!protocol || !host || !Number.isFinite(port) || port <= 0) {
+    return null
+  }
+
+  return {
+    protocol: String(protocol),
+    host: String(host),
+    port,
+    username: proxy.username ? String(proxy.username) : '',
+    password: proxy.password ? String(proxy.password) : ''
+  }
+}
+
+function buildModelMappingFromSupportedModels(supportedModels) {
+  if (!supportedModels) {
+    return null
+  }
+
+  if (Array.isArray(supportedModels)) {
+    const mapping = {}
+    for (const model of supportedModels) {
+      if (typeof model === 'string' && model.trim()) {
+        mapping[model.trim()] = model.trim()
+      }
+    }
+    return Object.keys(mapping).length ? mapping : null
+  }
+
+  if (typeof supportedModels === 'object') {
+    const mapping = {}
+    for (const [from, to] of Object.entries(supportedModels)) {
+      if (typeof from === 'string' && typeof to === 'string' && from.trim() && to.trim()) {
+        mapping[from.trim()] = to.trim()
+      }
+    }
+    return Object.keys(mapping).length ? mapping : null
+  }
+
+  return null
+}
+
+function safeParseJson(raw, fallback = null) {
+  if (!raw || typeof raw !== 'string') {
+    return fallback
+  }
+  try {
+    return JSON.parse(raw)
+  } catch (_) {
+    return fallback
+  }
+}
+
+// Export accounts for migration (includes secrets).
+// GET /admin/sync/export-accounts?include_secrets=true
+router.get('/sync/export-accounts', authenticateAdmin, async (req, res) => {
+  try {
+    const includeSecrets = toBool(req.query.include_secrets, false)
+    if (!includeSecrets) {
+      return res.status(400).json({
+        success: false,
+        error: 'include_secrets_required',
+        message: 'Set include_secrets=true to export secrets'
+      })
+    }
+
+    // ===== Claude official OAuth / Setup Token accounts =====
+    const rawClaudeAccounts = await redis.getAllClaudeAccounts()
+    const claudeAccounts = rawClaudeAccounts.map((account) => {
+      // Backward compatible extraction: prefer individual fields, fallback to claudeAiOauth JSON blob.
+      let decryptedClaudeAiOauth = null
+      if (account.claudeAiOauth) {
+        try {
+          const raw = claudeAccountService._decryptSensitiveData(account.claudeAiOauth)
+          decryptedClaudeAiOauth = raw ? JSON.parse(raw) : null
+        } catch (_) {
+          decryptedClaudeAiOauth = null
+        }
+      }
+
+      const rawScopes =
+        account.scopes && account.scopes.trim()
+          ? account.scopes
+          : decryptedClaudeAiOauth?.scopes
+            ? decryptedClaudeAiOauth.scopes.join(' ')
+            : ''
+
+      const scopes = rawScopes && rawScopes.trim() ? rawScopes.trim().split(' ') : []
+      const isOAuth = scopes.includes('user:profile') && scopes.includes('user:inference')
+      const authType = isOAuth ? 'oauth' : 'setup-token'
+
+      const accessToken =
+        account.accessToken && String(account.accessToken).trim()
+          ? claudeAccountService._decryptSensitiveData(account.accessToken)
+          : decryptedClaudeAiOauth?.accessToken || ''
+
+      const refreshToken =
+        account.refreshToken && String(account.refreshToken).trim()
+          ? claudeAccountService._decryptSensitiveData(account.refreshToken)
+          : decryptedClaudeAiOauth?.refreshToken || ''
+
+      let expiresAt = null
+      const expiresAtMs = Number.parseInt(account.expiresAt, 10)
+      if (Number.isFinite(expiresAtMs) && expiresAtMs > 0) {
+        expiresAt = new Date(expiresAtMs).toISOString()
+      } else if (decryptedClaudeAiOauth?.expiresAt) {
+        try {
+          expiresAt = new Date(Number(decryptedClaudeAiOauth.expiresAt)).toISOString()
+        } catch (_) {
+          expiresAt = null
+        }
+      }
+
+      const proxy = account.proxy ? normalizeProxy(safeParseJson(account.proxy)) : null
+
+      // 🔧 Parse subscriptionInfo to extract org_uuid and account_uuid
+      let orgUuid = null
+      let accountUuid = null
+      if (account.subscriptionInfo) {
+        try {
+          const subscriptionInfo = JSON.parse(account.subscriptionInfo)
+          orgUuid = subscriptionInfo.organizationUuid || null
+          accountUuid = subscriptionInfo.accountUuid || null
+        } catch (_) {
+          // Ignore parse errors
+        }
+      }
+
+      // 🔧 Calculate expires_in from expires_at
+      let expiresIn = null
+      if (expiresAt) {
+        try {
+          const expiresAtTime = new Date(expiresAt).getTime()
+          const nowTime = Date.now()
+          const diffSeconds = Math.floor((expiresAtTime - nowTime) / 1000)
+          if (diffSeconds > 0) {
+            expiresIn = diffSeconds
+          }
+        } catch (_) {
+          // Ignore calculation errors
+        }
+      }
+      // 🔧 Use default expires_in if calculation failed (Anthropic OAuth: 8 hours)
+      if (!expiresIn && isOAuth) {
+        expiresIn = 28800 // 8 hours
+      }
+
+      const credentials = {
+        access_token: accessToken,
+        refresh_token: refreshToken || undefined,
+        expires_at: expiresAt || undefined,
+        expires_in: expiresIn || undefined,
+        scope: scopes.join(' ') || undefined,
+        token_type: 'Bearer'
+      }
+      // 🔧 Add auth info as top-level credentials fields
+      if (orgUuid) credentials.org_uuid = orgUuid
+      if (accountUuid) credentials.account_uuid = accountUuid
+
+      // 🔧 Store complete original CRS data in extra
+      const extra = {
+        crs_account_id: account.id,
+        crs_kind: 'claude-account',
+        crs_id: account.id,
+        crs_name: account.name,
+        crs_description: account.description || '',
+        crs_platform: account.platform || 'claude',
+        crs_auth_type: authType,
+        crs_is_active: account.isActive === 'true',
+        crs_schedulable: account.schedulable !== 'false',
+        crs_priority: Number.parseInt(account.priority, 10) || 50,
+        crs_status: account.status || 'active',
+        crs_scopes: scopes,
+        crs_subscription_info: account.subscriptionInfo || undefined
+      }
+
+      return {
+        kind: 'claude-account',
+        id: account.id,
+        name: account.name,
+        description: account.description || '',
+        platform: account.platform || 'claude',
+        authType,
+        isActive: account.isActive === 'true',
+        schedulable: account.schedulable !== 'false',
+        priority: Number.parseInt(account.priority, 10) || 50,
+        status: account.status || 'active',
+        proxy,
+        credentials,
+        extra
+      }
+    })
+
+    // ===== Claude Console API Key accounts =====
+    const claudeConsoleSummaries = await claudeConsoleAccountService.getAllAccounts()
+    const claudeConsoleAccounts = []
+    for (const summary of claudeConsoleSummaries) {
+      const full = await claudeConsoleAccountService.getAccount(summary.id)
+      if (!full) {
+        continue
+      }
+
+      const proxy = normalizeProxy(full.proxy)
+      const modelMapping = buildModelMappingFromSupportedModels(full.supportedModels)
+
+      const credentials = {
+        api_key: full.apiKey,
+        base_url: full.apiUrl
+      }
+
+      if (modelMapping) {
+        credentials.model_mapping = modelMapping
+      }
+
+      if (full.userAgent) {
+        credentials.user_agent = full.userAgent
+      }
+
+      claudeConsoleAccounts.push({
+        kind: 'claude-console-account',
+        id: full.id,
+        name: full.name,
+        description: full.description || '',
+        platform: full.platform || 'claude-console',
+        isActive: full.isActive === true,
+        schedulable: full.schedulable !== false,
+        priority: Number.parseInt(full.priority, 10) || 50,
+        status: full.status || 'active',
+        proxy,
+        maxConcurrentTasks: Number.parseInt(full.maxConcurrentTasks, 10) || 0,
+        credentials,
+        extra: {
+          crs_account_id: full.id,
+          crs_kind: 'claude-console-account',
+          crs_id: full.id,
+          crs_name: full.name,
+          crs_description: full.description || '',
+          crs_platform: full.platform || 'claude-console',
+          crs_is_active: full.isActive === true,
+          crs_schedulable: full.schedulable !== false,
+          crs_priority: Number.parseInt(full.priority, 10) || 50,
+          crs_status: full.status || 'active'
+        }
+      })
+    }
+
+    // ===== OpenAI OAuth accounts =====
+    const openaiOAuthAccounts = []
+    {
+      const client = redis.getClientSafe()
+      const openaiKeys = await client.keys('openai:account:*')
+      for (const key of openaiKeys) {
+        const id = key.split(':').slice(2).join(':')
+        const account = await openaiAccountService.getAccount(id)
+        if (!account) {
+          continue
+        }
+
+        const accessToken = account.accessToken ? openaiAccountService.decrypt(account.accessToken) : ''
+        if (!accessToken) {
+          // Skip broken/legacy records without decryptable token
+          continue
+        }
+
+        const scopes =
+          account.scopes && typeof account.scopes === 'string' && account.scopes.trim()
+            ? account.scopes.trim().split(' ')
+            : []
+
+        const proxy = normalizeProxy(account.proxy)
+
+        // 🔧 Calculate expires_in from expires_at
+        let expiresIn = null
+        if (account.expiresAt) {
+          try {
+            const expiresAtTime = new Date(account.expiresAt).getTime()
+            const nowTime = Date.now()
+            const diffSeconds = Math.floor((expiresAtTime - nowTime) / 1000)
+            if (diffSeconds > 0) {
+              expiresIn = diffSeconds
+            }
+          } catch (_) {
+            // Ignore calculation errors
+          }
+        }
+        // 🔧 Use default expires_in if calculation failed (OpenAI OAuth: 10 days)
+        if (!expiresIn) {
+          expiresIn = 864000 // 10 days
+        }
+
+        const credentials = {
+          access_token: accessToken,
+          refresh_token: account.refreshToken || undefined,
+          id_token: account.idToken || undefined,
+          expires_at: account.expiresAt || undefined,
+          expires_in: expiresIn || undefined,
+          scope: scopes.join(' ') || undefined,
+          token_type: 'Bearer'
+        }
+        // 🔧 Add auth info as top-level credentials fields
+        if (account.accountId) credentials.chatgpt_account_id = account.accountId
+        if (account.chatgptUserId) credentials.chatgpt_user_id = account.chatgptUserId
+        if (account.organizationId) credentials.organization_id = account.organizationId
+
+        // 🔧 Store complete original CRS data in extra
+        const extra = {
+          crs_account_id: account.id,
+          crs_kind: 'openai-oauth-account',
+          crs_id: account.id,
+          crs_name: account.name,
+          crs_description: account.description || '',
+          crs_platform: account.platform || 'openai',
+          crs_is_active: account.isActive === 'true',
+          crs_schedulable: account.schedulable !== 'false',
+          crs_priority: Number.parseInt(account.priority, 10) || 50,
+          crs_status: account.status || 'active',
+          crs_scopes: scopes,
+          crs_email: account.email || undefined,
+          crs_chatgpt_account_id: account.accountId || undefined,
+          crs_chatgpt_user_id: account.chatgptUserId || undefined,
+          crs_organization_id: account.organizationId || undefined
+        }
+
+        openaiOAuthAccounts.push({
+          kind: 'openai-oauth-account',
+          id: account.id,
+          name: account.name,
+          description: account.description || '',
+          platform: account.platform || 'openai',
+          authType: 'oauth',
+          isActive: account.isActive === 'true',
+          schedulable: account.schedulable !== 'false',
+          priority: Number.parseInt(account.priority, 10) || 50,
+          status: account.status || 'active',
+          proxy,
+          credentials,
+          extra
+        })
+      }
+    }
+
+    // ===== OpenAI Responses API Key accounts =====
+    const openaiResponsesAccounts = []
+    const client = redis.getClientSafe()
+    const openaiResponseKeys = await client.keys('openai_responses_account:*')
+    for (const key of openaiResponseKeys) {
+      const id = key.split(':').slice(1).join(':')
+      const full = await openaiResponsesAccountService.getAccount(id)
+      if (!full) {
+        continue
+      }
+
+      const proxy = normalizeProxy(full.proxy)
+
+      const credentials = {
+        api_key: full.apiKey,
+        base_url: full.baseApi
+      }
+
+      if (full.userAgent) {
+        credentials.user_agent = full.userAgent
+      }
+
+      openaiResponsesAccounts.push({
+        kind: 'openai-responses-account',
+        id: full.id,
+        name: full.name,
+        description: full.description || '',
+        platform: full.platform || 'openai-responses',
+        isActive: full.isActive === 'true',
+        schedulable: full.schedulable !== 'false',
+        priority: Number.parseInt(full.priority, 10) || 50,
+        status: full.status || 'active',
+        proxy,
+        credentials,
+        extra: {
+          crs_account_id: full.id,
+          crs_kind: 'openai-responses-account',
+          crs_id: full.id,
+          crs_name: full.name,
+          crs_description: full.description || '',
+          crs_platform: full.platform || 'openai-responses',
+          crs_is_active: full.isActive === 'true',
+          crs_schedulable: full.schedulable !== 'false',
+          crs_priority: Number.parseInt(full.priority, 10) || 50,
+          crs_status: full.status || 'active'
+        }
+      })
+    }
+
+    return res.json({
+      success: true,
+      data: {
+        exportedAt: new Date().toISOString(),
+        claudeAccounts,
+        claudeConsoleAccounts,
+        openaiOAuthAccounts,
+        openaiResponsesAccounts
+      }
+    })
+  } catch (error) {
+    logger.error('❌ Failed to export accounts for sync:', error)
+    return res.status(500).json({
+      success: false,
+      error: 'export_failed',
+      message: error.message
+    })
+  }
+})
+
+module.exports = router