diff --git a/apps/api/src/routes/sync.test.ts b/apps/api/src/routes/sync.test.ts
new file mode 100644
index 0000000..7b569e5
--- /dev/null
+++ b/apps/api/src/routes/sync.test.ts
@@ -0,0 +1,79 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+import { closeDb } from '@cfdm/db'
+import { resetTestDb, seedTestProvider } from '@cfdm/db/test-setup'
+import { providerAccountsRepository } from '@cfdm/db/repositories/provider-accounts'
+import { providersRepository } from '@cfdm/db/repositories/providers'
+
+import { buildApp } from '../index.js'
+
+vi.mock('../services/fourvps/sync.js', () => ({
+  syncFromFourvps: vi.fn().mockResolvedValue({
+    vpsCount: 2,
+    paymentsCount: 0,
+    tariffsCount: 3,
+    newTariffs: [],
+    balance: { balance: 1000, currency: 'RUB' },
+    syncSummary: { added: [], updated: [], paymentsAdded: 0 },
+  }),
+}))
+
+describe('sync routes — 4vps', () => {
+  let app: Awaited<ReturnType<typeof buildApp>>
+
+  beforeEach(async () => {
+    resetTestDb()
+    seedTestProvider('prov-4vps')
+    providersRepository.update('prov-4vps', {
+      apiType: '4vps',
+      apiBaseUrl: 'https://4vps.su/api',
+    })
+    providerAccountsRepository.create({
+      id: 'acc-4vps',
+      providerId: 'prov-4vps',
+      name: '4VPS',
+      apiCredentials: '1:secret-key',
+    })
+    app = await buildApp()
+  })
+
+  afterEach(async () => {
+    await app.close()
+    closeDb()
+  })
+
+  it('POST /api/sync/:accountId syncs 4vps account', async () => {
+    const res = await app.inject({
+      method: 'POST',
+      url: '/api/sync/acc-4vps',
+      payload: {},
+    })
+    expect(res.statusCode).toBe(200)
+    const body = res.json() as { ok?: boolean; synced?: { vpsCount?: number } }
+    expect(body.ok).toBe(true)
+    expect(body.synced?.vpsCount).toBe(2)
+  })
+
+  it('POST /api/sync/test-connection uses apiType 4vps', async () => {
+    vi.stubGlobal(
+      'fetch',
+      vi.fn().mockResolvedValue({
+        ok: true,
+        json: async () => ({ error: false, data: { userBalance: 500, serverlist: [] } }),
+      }),
+    )
+
+    const res = await app.inject({
+      method: 'POST',
+      url: '/api/sync/test-connection',
+      payload: {
+        apiBaseUrl: 'https://4vps.su/api',
+        apiCredentials: '1:key',
+        apiType: '4vps',
+      },
+    })
+    expect(res.statusCode).toBe(200)
+    const body = res.json() as { ok?: boolean }
+    expect(body.ok).toBe(true)
+    vi.unstubAllGlobals()
+  })
+})
diff --git a/apps/api/src/routes/sync.ts b/apps/api/src/routes/sync.ts
index 05e8e71..89b0e3c 100644
--- a/apps/api/src/routes/sync.ts
+++ b/apps/api/src/routes/sync.ts
@@ -5,11 +5,11 @@ import { providerAccountsRepository } from '@cfdm/db/repositories/provider-accou
 import { providersRepository } from '@cfdm/db/repositories/providers'
 
 import {
-  billmanagerAccountRowForSync,
-  fetchDashboardInfo,
-  runBillmanagerAccountSync,
-  testConnection,
-} from '../services/billmanager/index.js'
+  getProviderAdapter,
+  resolveSyncAccount,
+  SYNC_SETUP_ERRORS,
+} from '../services/providers/index.js'
+import { runAccountSync } from '../services/providers/sync-job.js'
 
 interface SyncLogRow {
   id: string
@@ -45,8 +45,9 @@ function mapSyncLog(row: typeof schema.syncLog.$inferSelect): SyncLogRow {
   }
 }
 
-const BILLMANAGER_SETUP_ERROR =
-  'Укажите в настройках хостера тип API BILLmanager и URL; в аккаунте — логин и пароль API'
+function setupErrorMessage(apiType: string): string {
+  return SYNC_SETUP_ERRORS[apiType] ?? 'Настройте API хостера и учётные данные аккаунта'
+}
 
 export const syncRoutes: FastifyPluginAsync = async (app) => {
   app.get('/api/sync/status', async () => {
@@ -67,16 +68,18 @@ export const syncRoutes: FastifyPluginAsync = async (app) => {
         return reply.code(404).send({ error: { code: 'NOT_FOUND', message: 'Account not found' } })
       }
       const provider = account.providerId ? providersRepository.get(account.providerId) : undefined
-      const syncRow = billmanagerAccountRowForSync(account, provider)
-      if (!syncRow) {
-        return reply.code(400).send({ error: { code: 'VALIDATION', message: BILLMANAGER_SETUP_ERROR } })
+      const resolved = resolveSyncAccount(account, provider)
+      if (!resolved) {
+        const apiType = String(provider?.apiType || 'billmanager').toLowerCase()
+        return reply.code(400).send({ error: { code: 'VALIDATION', message: setupErrorMessage(apiType) } })
       }
 
       const onlyTariffs = Boolean(req.body?.onlyTariffs)
       const opts = onlyTariffs ? { skipVpsPayments: true } : {}
+      const adapter = getProviderAdapter(resolved.apiType)
 
       try {
-        const result = await runBillmanagerAccountSync(syncRow, opts)
+        const result = await runAccountSync(adapter, resolved.account, opts)
         return {
           ok: true,
           synced: {
@@ -99,15 +102,19 @@ export const syncRoutes: FastifyPluginAsync = async (app) => {
       return reply.code(404).send({ error: { code: 'NOT_FOUND', message: 'Account not found' } })
     }
     const provider = account.providerId ? providersRepository.get(account.providerId) : undefined
-    const syncRow = billmanagerAccountRowForSync(account, provider)
-    if (!syncRow) {
-      return reply.code(400).send({ error: { code: 'VALIDATION', message: BILLMANAGER_SETUP_ERROR } })
+    const resolved = resolveSyncAccount(account, provider)
+    if (!resolved) {
+      const apiType = String(provider?.apiType || 'billmanager').toLowerCase()
+      return reply.code(400).send({ error: { code: 'VALIDATION', message: setupErrorMessage(apiType) } })
+    }
+
+    const adapter = getProviderAdapter(resolved.apiType)
+    if (!adapter.fetchBalance) {
+      return reply.code(400).send({ error: { code: 'VALIDATION', message: 'Баланс через API недоступен для этого типа хостера' } })
     }
 
     try {
-      const info = await fetchDashboardInfo(syncRow.apiBaseUrl, String(syncRow.apiCredentials).trim(), {
-        fallbackCurrency: account.currency,
-      })
+      const info = await adapter.fetchBalance(resolved.account)
       getDb()
         .update(schema.providerAccounts)
         .set({
@@ -127,15 +134,17 @@ export const syncRoutes: FastifyPluginAsync = async (app) => {
   })
 
   app.post('/api/sync/test-connection', async (req, reply) => {
-    const { apiBaseUrl, apiCredentials } = (req.body ?? {}) as {
+    const { apiBaseUrl, apiCredentials, apiType } = (req.body ?? {}) as {
       apiBaseUrl?: string
       apiCredentials?: string
+      apiType?: string
     }
     if (!apiBaseUrl?.trim() || !apiCredentials?.trim()) {
       return reply.code(400).send({ ok: false, error: 'Укажите URL и учётные данные' })
     }
     try {
-      const result = await testConnection(apiBaseUrl.trim(), apiCredentials.trim())
+      const adapter = getProviderAdapter(apiType || 'billmanager')
+      const result = await adapter.testConnection(apiBaseUrl.trim(), apiCredentials.trim())
       return result
     } catch (err) {
       req.log.error(err)
diff --git a/apps/api/src/services/billmanager/sync-job.ts b/apps/api/src/services/billmanager/sync-job.ts
index 1b08b50..6d14670 100644
--- a/apps/api/src/services/billmanager/sync-job.ts
+++ b/apps/api/src/services/billmanager/sync-job.ts
@@ -2,11 +2,10 @@
  * Запуск синхронизации BILLmanager с записью в sync_log
  */
 
-import { eq } from 'drizzle-orm'
-import { getDb, schema } from '@cfdm/db'
-
 import type { BillmanagerSyncAccount } from './context.js'
-import { syncFromBillmanager, type SyncFromBillmanagerOptions, type SyncFromBillmanagerResult } from './sync.js'
+import type { SyncFromBillmanagerOptions, SyncFromBillmanagerResult } from './sync.js'
+import { billmanagerAdapter } from '../providers/billmanager-adapter.js'
+import { runAccountSync } from '../providers/sync-job.js'
 
 export interface RunBillmanagerAccountSyncResult extends SyncFromBillmanagerResult {
   ok: true
@@ -17,48 +16,5 @@ export async function runBillmanagerAccountSync(
   account: BillmanagerSyncAccount,
   opts: SyncFromBillmanagerOptions = {},
 ): Promise<RunBillmanagerAccountSyncResult> {
-  const db = getDb()
-  const logId = `sync-${account.id}-${Date.now()}`
-
-  db.insert(schema.syncLog)
-    .values({
-      id: logId,
-      accountId: account.id,
-      startedAt: new Date().toISOString(),
-      status: 'running',
-    })
-    .run()
-
-  try {
-    const result = await syncFromBillmanager(account, opts)
-    const summaryPayload = {
-      ...(result.syncSummary || {}),
-      vpsCount: result.vpsCount,
-      paymentsCount: result.paymentsCount,
-      tariffsCount: result.tariffsCount ?? 0,
-    }
-    db.update(schema.syncLog)
-      .set({
-        finishedAt: new Date().toISOString(),
-        status: 'ok',
-        vpsCount: result.vpsCount,
-        paymentsCount: result.paymentsCount,
-        summary: JSON.stringify(summaryPayload),
-      })
-      .where(eq(schema.syncLog.id, logId))
-      .run()
-    return { ok: true, logId, ...result }
-  } catch (err) {
-    const message = err instanceof Error ? err.message : 'Unknown error'
-    db.update(schema.syncLog)
-      .set({
-        finishedAt: new Date().toISOString(),
-        status: 'error',
-        error: message,
-        summary: JSON.stringify({ error: message }),
-      })
-      .where(eq(schema.syncLog.id, logId))
-      .run()
-    throw err
-  }
+  return runAccountSync(billmanagerAdapter, account, opts)
 }
diff --git a/apps/api/src/services/dashboard-stats.ts b/apps/api/src/services/dashboard-stats.ts
index af8860f..ec5de1e 100644
--- a/apps/api/src/services/dashboard-stats.ts
+++ b/apps/api/src/services/dashboard-stats.ts
@@ -1,6 +1,7 @@
 import { getSnapshot } from '@cfdm/db/repositories/snapshot'
 import { countExpiringWithin7Days, countInventoryIssues } from '@cfdm/shared/utils/inventory-health'
 import { accountBalanceApi } from '@cfdm/shared/utils/account-balance'
+import { isSyncApiType } from '@cfdm/shared/contracts/provider'
 
 const STALE_SYNC_HOURS = 48
 
@@ -84,11 +85,11 @@ export function computeDashboardStats(): DashboardStats {
 
   const providerById = new Map(snap.providers.map((p) => [p.id, p]))
   const staleMs = STALE_SYNC_HOURS * 60 * 60 * 1000
-  const bmAccounts = snap.providerAccounts.filter((a) => {
+  const syncAccounts = snap.providerAccounts.filter((a) => {
     const p = providerById.get(a.providerId)
-    return p?.apiType === 'billmanager' && Boolean((p.apiBaseUrl || '').trim()) && a.apiCredentialsSet
+    return isSyncApiType(p?.apiType) && Boolean((p?.apiBaseUrl || '').trim()) && a.apiCredentialsSet
   })
-  const staleSyncAccountCount = bmAccounts.filter((a) => {
+  const staleSyncAccountCount = syncAccounts.filter((a) => {
     const t = lastOkSyncAt(a.id, snap.syncLog)
     if (t == null) return true
     return now.getTime() - t > staleMs
diff --git a/apps/api/src/services/fourvps/client.test.ts b/apps/api/src/services/fourvps/client.test.ts
new file mode 100644
index 0000000..efb6fd0
--- /dev/null
+++ b/apps/api/src/services/fourvps/client.test.ts
@@ -0,0 +1,44 @@
+import { afterEach, describe, expect, it, vi } from 'vitest'
+
+import { fourvpsRequest, FourVpsApiError } from './client.js'
+
+describe('fourvpsRequest', () => {
+  afterEach(() => {
+    vi.unstubAllGlobals()
+  })
+
+  it('sends Bearer auth and panel_id query param', async () => {
+    const fetchMock = vi.fn().mockResolvedValue({
+      ok: true,
+      json: async () => ({ error: false, data: { userBalance: 100 } }),
+    })
+    vi.stubGlobal('fetch', fetchMock)
+
+    const data = await fourvpsRequest('https://4vps.su/api', 'test-key', '/userBalance', {
+      panelId: 2,
+    })
+
+    expect(data).toEqual({ userBalance: 100 })
+    const [url, init] = fetchMock.mock.calls[0] as [string, RequestInit]
+    expect(url).toContain('panel_id=2')
+    expect((init.headers as Record<string, string>).Authorization).toBe('Bearer test-key')
+  })
+
+  it('throws FourVpsApiError on API error flag', async () => {
+    vi.stubGlobal(
+      'fetch',
+      vi.fn().mockResolvedValue({
+        ok: true,
+        json: async () => ({
+          error: true,
+          errorMessage: 'Authentication error',
+          data: false,
+        }),
+      }),
+    )
+
+    await expect(fourvpsRequest('https://4vps.su/api', 'bad', '/userBalance')).rejects.toThrow(
+      FourVpsApiError,
+    )
+  })
+})
diff --git a/apps/api/src/services/fourvps/client.ts b/apps/api/src/services/fourvps/client.ts
new file mode 100644
index 0000000..250def4
--- /dev/null
+++ b/apps/api/src/services/fourvps/client.ts
@@ -0,0 +1,78 @@
+/**
+ * 4VPS.SU REST API HTTP client
+ * @see https://4vps.su/page/api
+ */
+
+export interface FourVpsResponse<T = unknown> {
+  error: boolean
+  errorMessage?: string | Record<string, unknown>
+  data: T
+}
+
+export class FourVpsApiError extends Error {
+  constructor(message: string) {
+    super(message)
+    this.name = 'FourVpsApiError'
+  }
+}
+
+function formatErrorMessage(errorMessage: FourVpsResponse['errorMessage']): string {
+  if (!errorMessage) return '4VPS API error'
+  if (typeof errorMessage === 'string') return errorMessage
+  const msg = errorMessage.message
+  if (typeof msg === 'string') return msg
+  return JSON.stringify(errorMessage)
+}
+
+function joinUrl(baseUrl: string, path: string): string {
+  const base = baseUrl.replace(/\/+$/, '')
+  const p = path.startsWith('/') ? path : `/${path}`
+  return `${base}${p}`
+}
+
+export interface FourVpsRequestOptions {
+  method?: 'GET' | 'POST'
+  panelId?: number | null
+  body?: Record<string, string | number>
+}
+
+export async function fourvpsRequest<T = unknown>(
+  baseUrl: string,
+  apiKey: string,
+  path: string,
+  opts: FourVpsRequestOptions = {},
+): Promise<T> {
+  const { method = 'GET', panelId, body } = opts
+  const url = new URL(joinUrl(baseUrl, path))
+  if (panelId != null) {
+    url.searchParams.set('panel_id', String(panelId))
+  }
+
+  const init: RequestInit = {
+    method,
+    headers: {
+      Authorization: `Bearer ${apiKey.trim()}`,
+      Accept: 'application/json',
+    },
+  }
+
+  if (method === 'POST') {
+    const payload: Record<string, string | number> = { ...(body ?? {}) }
+    if (panelId != null && payload.panel_id == null) {
+      payload.panel_id = panelId
+    }
+    init.headers = { ...init.headers, 'Content-Type': 'application/json' }
+    init.body = JSON.stringify(payload)
+  }
+
+  const res = await fetch(url.toString(), init)
+  if (!res.ok) {
+    throw new FourVpsApiError(`4VPS API HTTP ${res.status}: ${res.statusText}`)
+  }
+
+  const json = (await res.json()) as FourVpsResponse<T>
+  if (json.error) {
+    throw new FourVpsApiError(formatErrorMessage(json.errorMessage))
+  }
+  return json.data
+}
diff --git a/apps/api/src/services/fourvps/context.ts b/apps/api/src/services/fourvps/context.ts
new file mode 100644
index 0000000..f41842a
--- /dev/null
+++ b/apps/api/src/services/fourvps/context.ts
@@ -0,0 +1,33 @@
+import type { schema } from '@cfdm/db'
+import { parseFourVpsCredentials } from '@cfdm/shared/utils/api-credentials'
+
+type AccountRow = typeof schema.providerAccounts.$inferSelect
+type ProviderRow = typeof schema.providers.$inferSelect
+
+export interface FourvpsSyncAccount extends AccountRow {
+  apiType: '4vps'
+  apiBaseUrl: string
+  panelId: number | null
+  apiKey: string
+}
+
+export function resolveFourvpsApi(
+  accountRow: AccountRow | null | undefined,
+  providerRow: ProviderRow | null | undefined,
+): { apiType: string; apiBaseUrl: string } {
+  const apiType = String(providerRow?.apiType || accountRow?.apiType || '').trim()
+  const apiBaseUrl = String(providerRow?.apiBaseUrl || accountRow?.apiBaseUrl || '').trim()
+  return { apiType, apiBaseUrl }
+}
+
+export function fourvpsAccountRowForSync(
+  accountRow: AccountRow | null | undefined,
+  providerRow: ProviderRow | null | undefined,
+): FourvpsSyncAccount | null {
+  if (!accountRow) return null
+  const { apiType, apiBaseUrl } = resolveFourvpsApi(accountRow, providerRow)
+  const cred = String(accountRow.apiCredentials || '').trim()
+  const { panelId, apiKey } = parseFourVpsCredentials(cred)
+  if (apiType !== '4vps' || !apiBaseUrl || !apiKey) return null
+  return { ...accountRow, apiType: '4vps', apiBaseUrl, panelId, apiKey }
+}
diff --git a/apps/api/src/services/fourvps/index.ts b/apps/api/src/services/fourvps/index.ts
new file mode 100644
index 0000000..9b2e243
--- /dev/null
+++ b/apps/api/src/services/fourvps/index.ts
@@ -0,0 +1,13 @@
+export { fourvpsRequest, FourVpsApiError } from './client.js'
+export type { FourvpsSyncAccount } from './context.js'
+export { fourvpsAccountRowForSync, resolveFourvpsApi } from './context.js'
+export { mapServerToVps } from './mappers.js'
+export {
+  fetchDcList,
+  fetchMyServers,
+  fetchTarifList,
+  fetchUserBalance,
+  testConnection,
+} from './operations.js'
+export { syncFromFourvps } from './sync.js'
+export type { SyncFromFourvpsOptions, SyncFromFourvpsResult } from './sync.js'
diff --git a/apps/api/src/services/fourvps/mappers.test.ts b/apps/api/src/services/fourvps/mappers.test.ts
new file mode 100644
index 0000000..af077b6
--- /dev/null
+++ b/apps/api/src/services/fourvps/mappers.test.ts
@@ -0,0 +1,42 @@
+import { describe, expect, it } from 'vitest'
+
+import { mapServerToVps } from './mappers.js'
+import type { FourVpsServer } from './operations.js'
+
+const sampleServer: FourVpsServer = {
+  id: 4140,
+  name: 'MyFirstServer',
+  price: 420,
+  dc: 7,
+  image: 'Alma Linux 8',
+  mem: 1,
+  cpu: 1,
+  disk: 10,
+  ipv4: '185.143.223.29',
+  status: 'active',
+  tname: 'USA-cx01',
+  time: 1664275501,
+  expired: 1666781101,
+}
+
+describe('mapServerToVps', () => {
+  it('maps myservers fields to VPS model', () => {
+    const dcMap = new Map([
+      [7, { id: 7, dc_name: 'USA DC1', flag: 'us', cpu_name: 'E5' }],
+    ])
+    const vps = mapServerToVps(sampleServer, 'prov-1', 'acc-1', dcMap)
+
+    expect(vps.externalId).toBe('4140')
+    expect(vps.ip).toBe('185.143.223.29')
+    expect(vps.vcpu).toBe(1)
+    expect(vps.ramGb).toBe(1)
+    expect(vps.diskGb).toBe(10)
+    expect(vps.os).toBe('Alma Linux 8')
+    expect(vps.status).toBe('active')
+    expect(vps.monthlyRate).toBe(420)
+    expect(vps.datacenter).toBe('USA DC1')
+    expect(vps.country).toBe('US')
+    expect(vps.paidUntil).toBe('2022-10-26')
+    expect(vps.notes).toContain('4vps-4140')
+  })
+})
diff --git a/apps/api/src/services/fourvps/mappers.ts b/apps/api/src/services/fourvps/mappers.ts
new file mode 100644
index 0000000..f1b5438
--- /dev/null
+++ b/apps/api/src/services/fourvps/mappers.ts
@@ -0,0 +1,101 @@
+/**
+ * 4VPS API response → vps-tracker model mappers
+ */
+
+import type { FourVpsDatacenter, FourVpsServer } from './operations.js'
+
+const STATUS_MAP: Record<string, string> = {
+  active: 'active',
+  paused: 'paused',
+  suspended: 'paused',
+  deleted: 'archived',
+}
+
+function unixToIso(ts: number | null | undefined): string {
+  if (ts == null || !Number.isFinite(ts) || ts <= 0) return ''
+  return new Date(ts * 1000).toISOString().slice(0, 10)
+}
+
+export interface MappedVps {
+  externalId: string
+  ip: string
+  dns: string
+  ipv6: string
+  additionalIps: string[]
+  providerId: string
+  providerAccountId: string
+  country: string
+  city: string
+  datacenter: string
+  os: string
+  vcpu: number
+  ramGb: number
+  diskGb: number
+  diskType: string
+  virtualization: string
+  bandwidthTb: number
+  sshPort: number
+  rootUser: string
+  purpose: string
+  environment: string
+  project: string
+  monitoringEnabled: boolean
+  backupEnabled: boolean
+  status: string
+  tariffType: string
+  currency: string
+  dailyRate: null
+  monthlyRate: number | null
+  createdAt: string
+  paidUntil: string
+  notes: string
+}
+
+export function mapServerToVps(
+  server: FourVpsServer,
+  providerId: string,
+  providerAccountId: string,
+  dcMap: Map<number, FourVpsDatacenter>,
+): MappedVps {
+  const dc = dcMap.get(server.dc)
+  const datacenter = dc?.dc_name ?? String(server.dc)
+  const country = (dc?.flag ?? '').toUpperCase()
+  const status = STATUS_MAP[String(server.status).toLowerCase()] ?? 'active'
+  const monthlyRate = Number.isFinite(server.price) ? server.price : null
+  const name = String(server.name || '').trim()
+
+  return {
+    externalId: String(server.id),
+    ip: String(server.ipv4 || '').trim(),
+    dns: name,
+    ipv6: '',
+    additionalIps: [],
+    providerId,
+    providerAccountId,
+    country,
+    city: '',
+    datacenter,
+    os: String(server.image || '').trim(),
+    vcpu: server.cpu ?? 0,
+    ramGb: server.mem ?? 0,
+    diskGb: server.disk ?? 0,
+    diskType: 'NVMe',
+    virtualization: 'KVM',
+    bandwidthTb: 0,
+    sshPort: 22,
+    rootUser: 'root',
+    purpose: '',
+    environment: '',
+    project: '',
+    monitoringEnabled: false,
+    backupEnabled: false,
+    status,
+    tariffType: 'monthly',
+    currency: 'RUB',
+    dailyRate: null,
+    monthlyRate,
+    createdAt: unixToIso(server.time),
+    paidUntil: unixToIso(server.expired),
+    notes: name ? `${name} [4vps-${server.id}]` : `4vps-${server.id}`,
+  }
+}
diff --git a/apps/api/src/services/fourvps/operations.ts b/apps/api/src/services/fourvps/operations.ts
new file mode 100644
index 0000000..5b308d9
--- /dev/null
+++ b/apps/api/src/services/fourvps/operations.ts
@@ -0,0 +1,220 @@
+/**
+ * 4VPS.SU API operations
+ */
+
+import { parseFourVpsCredentials } from '@cfdm/shared/utils/api-credentials'
+
+import { fourvpsRequest } from './client.js'
+
+export interface FourVpsServer {
+  id: number
+  name: string
+  price: number
+  dc: number
+  image: string
+  mem: number
+  cpu: number
+  disk: number
+  ipv4: string
+  status: string
+  tname: string
+  time: number
+  expired: number
+  autoprolong?: number
+}
+
+export interface FourVpsDatacenter {
+  id: number
+  dc_name: string
+  flag: string
+  cpu_name?: string
+  t_name?: string
+}
+
+export interface FourVpsTariffPreset {
+  id: number
+  name: string
+  nameFull?: string
+  cpu_number: number
+  ram_mib: number
+  rom?: number
+  commentParsed?: { price?: string | number; eth?: string }
+  disks?: { size_mib?: number; tags?: { name?: string }[] }[]
+}
+
+export interface FourVpsTariffItem {
+  externalId: string
+  datacenterKey: string
+  datacenterName: string
+  name: string
+  desc: string
+  vcpu: number
+  ramGb: number
+  diskGb: number
+  diskType: string
+  virtualization: string
+  channel: string
+  location: string
+  country: string
+  cpuModel: string
+  orderAvailable: boolean
+  price: string
+}
+
+export interface FourVpsBalanceInfo {
+  balance: number
+  currency: string
+}
+
+function parseCredentials(baseUrl: string, credentials: string) {
+  const url = baseUrl.trim()
+  const { panelId, apiKey } = parseFourVpsCredentials(credentials)
+  if (!url || !apiKey) {
+    throw new Error('API URL and credentials are required')
+  }
+  return { baseUrl: url, panelId, apiKey }
+}
+
+export async function fetchUserBalance(
+  baseUrl: string,
+  credentials: string,
+  fallbackCurrency = 'RUB',
+): Promise<FourVpsBalanceInfo> {
+  const { baseUrl: url, apiKey } = parseCredentials(baseUrl, credentials)
+  const data = await fourvpsRequest<{ userBalance?: number }>(url, apiKey, '/userBalance')
+  const raw = data?.userBalance
+  const balance = typeof raw === 'number' ? raw : Number.parseFloat(String(raw ?? ''))
+  return {
+    balance: Number.isFinite(balance) ? balance : 0,
+    currency: fallbackCurrency || 'RUB',
+  }
+}
+
+export async function fetchMyServers(baseUrl: string, credentials: string): Promise<FourVpsServer[]> {
+  const { baseUrl: url, apiKey } = parseCredentials(baseUrl, credentials)
+  const data = await fourvpsRequest<{ serverlist?: FourVpsServer[] }>(url, apiKey, '/myservers')
+  return Array.isArray(data?.serverlist) ? data.serverlist : []
+}
+
+export async function fetchDcList(
+  baseUrl: string,
+  credentials: string,
+): Promise<Map<number, FourVpsDatacenter>> {
+  const { baseUrl: url, panelId, apiKey } = parseCredentials(baseUrl, credentials)
+  if (panelId == null) return new Map()
+
+  const data = await fourvpsRequest<{ dcList?: Record<string, FourVpsDatacenter> }>(
+    url,
+    apiKey,
+    '/getDcList',
+    { panelId },
+  )
+  const map = new Map<number, FourVpsDatacenter>()
+  const dcList = data?.dcList ?? {}
+  for (const [key, dc] of Object.entries(dcList)) {
+    const id = dc?.id ?? Number.parseInt(key, 10)
+    if (Number.isFinite(id)) {
+      map.set(id, { ...dc, id })
+    }
+  }
+  return map
+}
+
+function mapPresetToTariffItem(
+  preset: FourVpsTariffPreset,
+  dcId: string,
+  dcName: string,
+  country: string,
+  cpuModel: string,
+): FourVpsTariffItem {
+  const diskMib = preset.disks?.[0]?.size_mib ?? (preset.rom ?? 0)
+  const diskGb = diskMib > 0 ? Math.round(diskMib / 1024) : preset.rom ?? 0
+  const diskTag = preset.disks?.[0]?.tags?.find((t) => t.name)?.name ?? 'nvme'
+  const priceRaw = preset.commentParsed?.price
+  const price = priceRaw != null ? String(priceRaw) : ''
+
+  return {
+    externalId: String(preset.id),
+    datacenterKey: dcId,
+    datacenterName: dcName,
+    name: preset.nameFull || preset.name || '',
+    desc: preset.commentParsed?.eth ? `Канал: ${preset.commentParsed.eth}` : '',
+    vcpu: preset.cpu_number ?? 0,
+    ramGb: preset.ram_mib ? Math.round((preset.ram_mib / 1024) * 10) / 10 : 0,
+    diskGb: typeof diskGb === 'number' ? diskGb : 0,
+    diskType: diskTag.toUpperCase(),
+    virtualization: 'KVM',
+    channel: preset.commentParsed?.eth ?? '',
+    location: dcName,
+    country,
+    cpuModel,
+    orderAvailable: true,
+    price,
+  }
+}
+
+export async function fetchTarifList(
+  baseUrl: string,
+  credentials: string,
+): Promise<FourVpsTariffItem[]> {
+  const { baseUrl: url, panelId, apiKey } = parseCredentials(baseUrl, credentials)
+  if (panelId == null) return []
+
+  const [tarifData, dcMap] = await Promise.all([
+    fourvpsRequest<{
+      tarifList?: Record<
+        string,
+        {
+          clusterInfo?: {
+            id?: number
+            dc_name?: string
+            flag?: string
+            cpu_name?: string
+            presets?: number[]
+          }
+          presets?: Record<string, FourVpsTariffPreset>
+        }
+      >
+    }>(url, apiKey, '/getTarifList', { panelId }),
+    fetchDcList(baseUrl, credentials),
+  ])
+
+  const items: FourVpsTariffItem[] = []
+  const tarifList = tarifData?.tarifList ?? {}
+
+  for (const [dcKey, cluster] of Object.entries(tarifList)) {
+    const clusterInfo = cluster.clusterInfo ?? {}
+    const dcId = String(clusterInfo.id ?? dcKey)
+    const dcFromList = dcMap.get(Number(clusterInfo.id ?? dcKey))
+    const dcName = clusterInfo.dc_name ?? dcFromList?.dc_name ?? ''
+    const country = (clusterInfo.flag ?? dcFromList?.flag ?? '').toUpperCase()
+    const cpuModel = clusterInfo.cpu_name ?? dcFromList?.cpu_name ?? ''
+    const presets = cluster.presets ?? {}
+
+    for (const preset of Object.values(presets)) {
+      if (!preset?.id) continue
+      items.push(mapPresetToTariffItem(preset, dcId, dcName, country, cpuModel))
+    }
+  }
+
+  return items
+}
+
+export async function testConnection(
+  baseUrl: string,
+  credentials: string,
+): Promise<{ ok: boolean; error?: string; vdsCount?: number; balance?: number }> {
+  if (!baseUrl?.trim() || !credentials?.trim()) {
+    return { ok: false, error: 'Укажите URL и учётные данные' }
+  }
+  try {
+    const [balanceInfo, servers] = await Promise.all([
+      fetchUserBalance(baseUrl, credentials),
+      fetchMyServers(baseUrl, credentials),
+    ])
+    return { ok: true, vdsCount: servers.length, balance: balanceInfo.balance }
+  } catch (err) {
+    const message = err instanceof Error ? err.message : 'Ошибка подключения'
+    return { ok: false, error: message }
+  }
+}
diff --git a/apps/api/src/services/fourvps/sync.test.ts b/apps/api/src/services/fourvps/sync.test.ts
new file mode 100644
index 0000000..cb99e14
--- /dev/null
+++ b/apps/api/src/services/fourvps/sync.test.ts
@@ -0,0 +1,130 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+import { closeDb, getSqlite } from '@cfdm/db'
+import { resetTestDb } from '@cfdm/db/test-setup'
+import { providerAccountsRepository } from '@cfdm/db/repositories/provider-accounts'
+
+import { syncFromFourvps } from './sync.js'
+import type { FourvpsSyncAccount } from './context.js'
+
+vi.mock('./operations.js', () => ({
+  fetchMyServers: vi.fn(),
+  fetchUserBalance: vi.fn(),
+  fetchTarifList: vi.fn(),
+  fetchDcList: vi.fn(),
+}))
+
+import {
+  fetchDcList,
+  fetchMyServers,
+  fetchTarifList,
+  fetchUserBalance,
+} from './operations.js'
+
+const account: FourvpsSyncAccount = {
+  id: 'acc-4vps',
+  providerId: 'prov-4vps',
+  name: '4VPS Account',
+  panelUrl: '',
+  currency: 'RUB',
+  billingMode: 'monthly',
+  notes: '',
+  apiType: '4vps',
+  apiBaseUrl: 'https://4vps.su/api',
+  apiCredentials: '1:secret',
+  panelId: 1,
+  apiKey: 'secret',
+  balanceApi: null,
+  balanceCurrency: null,
+  balanceUpdatedAt: null,
+  enoughmoneyto: '',
+  balanceAlertBelow: null,
+}
+
+describe('syncFromFourvps', () => {
+  beforeEach(() => {
+    resetTestDb()
+    getSqlite()
+      .prepare(
+        `INSERT INTO providers (id, name, apiType, apiBaseUrl) VALUES ('prov-4vps', '4VPS', '4vps', 'https://4vps.su/api')`,
+      )
+      .run()
+    providerAccountsRepository.create({
+      id: 'acc-4vps',
+      providerId: 'prov-4vps',
+      name: '4VPS Account',
+      apiCredentials: '1:secret',
+    })
+
+    vi.mocked(fetchMyServers).mockResolvedValue([
+      {
+        id: 100,
+        name: 'srv1',
+        price: 420,
+        dc: 1,
+        image: 'Debian 11',
+        mem: 2,
+        cpu: 2,
+        disk: 20,
+        ipv4: '1.2.3.4',
+        status: 'active',
+        tname: 'cx01',
+        time: 1664275501,
+        expired: 1666781101,
+      },
+    ])
+    vi.mocked(fetchUserBalance).mockResolvedValue({ balance: 77825, currency: 'RUB' })
+    vi.mocked(fetchDcList).mockResolvedValue(
+      new Map([[1, { id: 1, dc_name: 'AE DC1', flag: 'ae' }]]),
+    )
+    vi.mocked(fetchTarifList).mockResolvedValue([
+      {
+        externalId: '13',
+        datacenterKey: '1',
+        datacenterName: 'AE DC1',
+        name: 'AE-cx01',
+        desc: '',
+        vcpu: 1,
+        ramGb: 1,
+        diskGb: 10,
+        diskType: 'NVME',
+        virtualization: 'KVM',
+        channel: '1Gbit/s',
+        location: 'AE DC1',
+        country: 'AE',
+        cpuModel: 'E5',
+        orderAvailable: true,
+        price: '420',
+      },
+    ])
+  })
+
+  afterEach(() => {
+    closeDb()
+    vi.clearAllMocks()
+  })
+
+  it('upserts VPS, balance and tariffs', async () => {
+    const result = await syncFromFourvps(account)
+
+    expect(result.vpsCount).toBe(1)
+    expect(result.paymentsCount).toBe(0)
+    expect(result.tariffsCount).toBe(1)
+    expect(result.balance?.balance).toBe(77825)
+
+    const vps = getSqlite()
+      .prepare(`SELECT id, ip FROM vps WHERE providerAccountId = ?`)
+      .get('acc-4vps') as { id: string; ip: string }
+    expect(vps.id).toBe('vps-4vps-acc-4vps-100')
+    expect(vps.ip).toBe('1.2.3.4')
+
+    const tariffs = getSqlite()
+      .prepare(`SELECT COUNT(*) as c FROM active_tariffs WHERE providerAccountId = ?`)
+      .get('acc-4vps') as { c: number }
+    expect(tariffs.c).toBe(1)
+
+    const bal = getSqlite()
+      .prepare(`SELECT balance_api FROM provider_accounts WHERE id = ?`)
+      .get('acc-4vps') as { balance_api: number }
+    expect(bal.balance_api).toBe(77825)
+  })
+})
diff --git a/apps/api/src/services/fourvps/sync.ts b/apps/api/src/services/fourvps/sync.ts
new file mode 100644
index 0000000..ae70a08
--- /dev/null
+++ b/apps/api/src/services/fourvps/sync.ts
@@ -0,0 +1,293 @@
+/**
+ * Sync 4VPS data into vps-tracker DB (Drizzle / @cfdm/db)
+ */
+
+import { and, eq, like, or } from 'drizzle-orm'
+import { getDb, schema } from '@cfdm/db'
+
+import type { FourvpsSyncAccount } from './context.js'
+import { mapServerToVps } from './mappers.js'
+import {
+  fetchDcList,
+  fetchMyServers,
+  fetchTarifList,
+  fetchUserBalance,
+  type FourVpsBalanceInfo,
+} from './operations.js'
+
+export interface SyncFromFourvpsOptions {
+  skipTariffs?: boolean
+  skipVpsPayments?: boolean
+}
+
+export interface SyncSummary {
+  added: { id: string; label: string }[]
+  updated: { id: string; label: string; fields: string[] }[]
+  paymentsAdded: number
+  tariffsOnly?: boolean
+}
+
+export interface SyncFromFourvpsResult {
+  vpsCount: number
+  paymentsCount: number
+  tariffsCount: number
+  newTariffs: { name: string; price: string; providerId: string }[]
+  balance: FourVpsBalanceInfo | null
+  syncSummary: SyncSummary
+}
+
+const SYNC_UPDATE_FIELDS = [
+  'country',
+  'city',
+  'datacenter',
+  'os',
+  'notes',
+  'status',
+  'tariffType',
+  'currency',
+  'dailyRate',
+  'monthlyRate',
+  'paidUntil',
+] as const
+
+function normVal(v: unknown): string {
+  if (v == null || v === '') return ''
+  if (typeof v === 'number') return Number.isFinite(v) ? String(v) : ''
+  return String(v)
+}
+
+function buildCredentials(account: FourvpsSyncAccount): string {
+  const { panelId, apiKey } = account
+  if (panelId != null) return `${panelId}:${apiKey}`
+  return apiKey
+}
+
+export async function syncFromFourvps(
+  account: FourvpsSyncAccount,
+  opts: SyncFromFourvpsOptions = {},
+): Promise<SyncFromFourvpsResult> {
+  const { skipTariffs = false, skipVpsPayments = false } = opts
+  const { apiBaseUrl, providerId, id: accountId } = account
+  const credentials = buildCredentials(account)
+  if (!apiBaseUrl?.trim() || !account.apiKey?.trim()) {
+    throw new Error('API URL and credentials are required')
+  }
+  const db = getDb()
+
+  const fetchVpsData = !skipVpsPayments
+  const fetchTariffs = !skipTariffs
+
+  const [servers, balanceInfo, tariffItems, dcMap] = await Promise.all([
+    fetchVpsData ? fetchMyServers(apiBaseUrl, credentials) : [],
+    fetchVpsData
+      ? fetchUserBalance(apiBaseUrl, credentials, account.currency || 'RUB').catch(() => null)
+      : null,
+    fetchTariffs ? fetchTarifList(apiBaseUrl, credentials).catch(() => []) : [],
+    fetchVpsData || fetchTariffs ? fetchDcList(apiBaseUrl, credentials).catch(() => new Map()) : new Map(),
+  ])
+
+  let vpsCount = 0
+  const syncSummary: SyncSummary = { added: [], updated: [], paymentsAdded: 0 }
+
+  if (fetchVpsData) {
+    for (const server of servers) {
+      const vps = mapServerToVps(server, providerId, accountId, dcMap)
+      const id = `vps-4vps-${accountId}-${vps.externalId}`
+      const additionalIps = JSON.stringify(vps.additionalIps || [])
+      const dailyRate = vps.dailyRate
+      const monthlyRate = vps.monthlyRate
+      const paidUntil = vps.paidUntil || ''
+      const notes = vps.notes
+
+      const existing = db
+        .select()
+        .from(schema.vps)
+        .where(
+          and(
+            eq(schema.vps.providerAccountId, accountId),
+            or(eq(schema.vps.ip, vps.ip), like(schema.vps.notes, `%4vps-${vps.externalId}%`)),
+          ),
+        )
+        .get()
+
+      if (existing) {
+        let userOverrides: string[] = []
+        try {
+          userOverrides = existing.userOverrides ? JSON.parse(existing.userOverrides) : []
+        } catch {
+          userOverrides = []
+        }
+        const merged = {
+          ip: vps.ip,
+          ipv6: vps.ipv6,
+          additionalIps,
+          dns: vps.dns,
+          country: vps.country,
+          city: vps.city,
+          datacenter: vps.datacenter,
+          os: vps.os,
+          status: vps.status,
+          tariffType: vps.tariffType,
+          currency: vps.currency,
+          dailyRate,
+          monthlyRate,
+          paidUntil,
+          notes,
+        }
+        for (const f of SYNC_UPDATE_FIELDS) {
+          if (userOverrides.includes(f)) {
+            merged[f] = existing[f as keyof typeof existing] as never
+          }
+        }
+        const compareFields = ['ip', 'ipv6', 'dns', ...SYNC_UPDATE_FIELDS] as const
+        const changedFields = compareFields.filter(
+          (f) => normVal(merged[f as keyof typeof merged]) !== normVal(existing[f as keyof typeof existing]),
+        )
+        if (changedFields.length > 0) {
+          const label = merged.dns || merged.ip || existing.id
+          syncSummary.updated.push({ id: existing.id, label, fields: [...changedFields] })
+        }
+        db.update(schema.vps)
+          .set({
+            ip: merged.ip,
+            ipv6: merged.ipv6,
+            additionalIps: merged.additionalIps,
+            dns: merged.dns,
+            country: merged.country,
+            city: merged.city,
+            datacenter: merged.datacenter,
+            os: merged.os,
+            status: merged.status,
+            tariffType: merged.tariffType,
+            currency: merged.currency,
+            dailyRate: merged.dailyRate,
+            monthlyRate: merged.monthlyRate,
+            paidUntil: merged.paidUntil,
+            notes: merged.notes,
+          })
+          .where(eq(schema.vps.id, existing.id))
+          .run()
+      } else {
+        const label = vps.dns || vps.ip || id
+        syncSummary.added.push({ id, label })
+        db.insert(schema.vps)
+          .values({
+            id,
+            ip: vps.ip,
+            ipv6: vps.ipv6,
+            additionalIps,
+            dns: vps.dns,
+            providerId: vps.providerId,
+            providerAccountId: vps.providerAccountId,
+            country: vps.country,
+            city: vps.city,
+            datacenter: vps.datacenter,
+            os: vps.os,
+            vcpu: vps.vcpu,
+            ramGb: vps.ramGb,
+            diskGb: vps.diskGb,
+            diskType: vps.diskType,
+            virtualization: vps.virtualization,
+            bandwidthTb: vps.bandwidthTb,
+            sshPort: vps.sshPort,
+            rootUser: vps.rootUser,
+            purpose: vps.purpose,
+            environment: vps.environment,
+            project: vps.project,
+            projectId: null,
+            monitoringEnabled: vps.monitoringEnabled ? 1 : 0,
+            backupEnabled: vps.backupEnabled ? 1 : 0,
+            status: vps.status,
+            tariffType: vps.tariffType,
+            currency: vps.currency,
+            dailyRate,
+            monthlyRate,
+            createdAt: vps.createdAt || new Date().toISOString().slice(0, 10),
+            paidUntil,
+            notes,
+            userOverrides: '[]',
+          })
+          .run()
+      }
+      vpsCount++
+    }
+  }
+
+  if (fetchVpsData && balanceInfo) {
+    db.update(schema.providerAccounts)
+      .set({
+        balanceApi: balanceInfo.balance,
+        balanceCurrency: balanceInfo.currency || 'RUB',
+        balanceUpdatedAt: new Date().toISOString(),
+        enoughmoneyto: '',
+      })
+      .where(eq(schema.providerAccounts.id, accountId))
+      .run()
+  }
+
+  let tariffsCount = 0
+  const newTariffs: { name: string; price: string; providerId: string }[] = []
+  if (fetchTariffs) {
+    const existingTariffIds = new Set(
+      db
+        .select({ id: schema.activeTariffs.id })
+        .from(schema.activeTariffs)
+        .where(eq(schema.activeTariffs.providerAccountId, accountId))
+        .all()
+        .map((r) => r.id),
+    )
+    const syncedAt = new Date().toISOString()
+    db.delete(schema.activeTariffs)
+      .where(eq(schema.activeTariffs.providerAccountId, accountId))
+      .run()
+
+    for (const t of tariffItems) {
+      const dcKey = t.datacenterKey ?? ''
+      const dcName = t.datacenterName ?? ''
+      const tariffId = dcKey
+        ? `tariff-4vps-${accountId}-${t.externalId}-${dcKey}`
+        : `tariff-4vps-${accountId}-${t.externalId}`
+      if (!existingTariffIds.has(tariffId)) {
+        newTariffs.push({ name: t.name || '', price: t.price || '', providerId })
+      }
+      db.insert(schema.activeTariffs)
+        .values({
+          id: tariffId,
+          providerAccountId: accountId,
+          providerId,
+          externalId: t.externalId,
+          datacenterKey: dcKey,
+          datacenterName: dcName,
+          name: t.name || '',
+          desc: t.desc || '',
+          vcpu: t.vcpu || 0,
+          ramGb: t.ramGb || 0,
+          diskGb: t.diskGb || 0,
+          diskType: t.diskType || 'NVMe',
+          virtualization: t.virtualization || 'KVM',
+          channel: t.channel || '',
+          location: t.location || '',
+          country: t.country || '',
+          cpuModel: t.cpuModel || '',
+          orderAvailable: t.orderAvailable ? 1 : 0,
+          price: t.price || '',
+          syncedAt,
+        })
+        .run()
+      tariffsCount++
+    }
+  }
+
+  if (!fetchVpsData) {
+    syncSummary.tariffsOnly = true
+  }
+
+  return {
+    vpsCount,
+    paymentsCount: 0,
+    tariffsCount,
+    newTariffs,
+    balance: balanceInfo,
+    syncSummary,
+  }
+}
diff --git a/apps/api/src/services/providers/billmanager-adapter.ts b/apps/api/src/services/providers/billmanager-adapter.ts
new file mode 100644
index 0000000..850c763
--- /dev/null
+++ b/apps/api/src/services/providers/billmanager-adapter.ts
@@ -0,0 +1,40 @@
+import { syncFromBillmanager } from '../billmanager/sync.js'
+import { testConnection as bmTestConnection, fetchDashboardInfo } from '../billmanager/operations.js'
+import type { BillmanagerSyncAccount } from '../billmanager/context.js'
+
+import type { ProviderAdapter, SyncResult } from './types.js'
+
+export const billmanagerAdapter: ProviderAdapter = {
+  type: 'billmanager',
+
+  async testConnection(apiBaseUrl: string, apiCredentials: string) {
+    const result = await bmTestConnection(apiBaseUrl, apiCredentials)
+    return { ok: result.ok, message: result.error }
+  },
+
+  async syncAccount(
+    account: BillmanagerSyncAccount,
+    options?: { skipTariffs?: boolean; skipVpsPayments?: boolean },
+  ): Promise<SyncResult> {
+    const result = await syncFromBillmanager(account, options)
+    return {
+      vpsCount: result.vpsCount,
+      paymentsCount: result.paymentsCount,
+      tariffsCount: result.tariffsCount,
+      balance: result.balance,
+      syncSummary: result.syncSummary,
+      newTariffs: result.newTariffs,
+    }
+  },
+
+  async fetchBalance(account: BillmanagerSyncAccount) {
+    const info = await fetchDashboardInfo(account.apiBaseUrl, String(account.apiCredentials).trim(), {
+      fallbackCurrency: account.currency,
+    })
+    return {
+      balance: info.balance,
+      currency: info.currency || 'RUB',
+      enoughmoneyto: info.enoughmoneyto || '',
+    }
+  },
+}
diff --git a/apps/api/src/services/providers/fourvps-adapter.ts b/apps/api/src/services/providers/fourvps-adapter.ts
new file mode 100644
index 0000000..c69e828
--- /dev/null
+++ b/apps/api/src/services/providers/fourvps-adapter.ts
@@ -0,0 +1,43 @@
+import { syncFromFourvps } from '../fourvps/sync.js'
+import {
+  fetchUserBalance as fetchFourvpsBalance,
+  testConnection as fourvpsTestConnection,
+} from '../fourvps/operations.js'
+import type { FourvpsSyncAccount } from '../fourvps/context.js'
+
+import type { ProviderAdapter, SyncResult } from './types.js'
+
+export const fourvpsAdapter: ProviderAdapter = {
+  type: '4vps',
+
+  async testConnection(apiBaseUrl: string, apiCredentials: string) {
+    const result = await fourvpsTestConnection(apiBaseUrl, apiCredentials)
+    return { ok: result.ok, message: result.error }
+  },
+
+  async syncAccount(
+    account: FourvpsSyncAccount,
+    options?: { skipTariffs?: boolean; skipVpsPayments?: boolean },
+  ): Promise<SyncResult> {
+    const result = await syncFromFourvps(account, options)
+    return {
+      vpsCount: result.vpsCount,
+      paymentsCount: result.paymentsCount,
+      tariffsCount: result.tariffsCount,
+      balance: result.balance,
+      syncSummary: result.syncSummary,
+      newTariffs: result.newTariffs,
+    }
+  },
+
+  async fetchBalance(account: FourvpsSyncAccount) {
+    const cred =
+      account.panelId != null ? `${account.panelId}:${account.apiKey}` : account.apiKey
+    const info = await fetchFourvpsBalance(account.apiBaseUrl, cred, account.currency || 'RUB')
+    return {
+      balance: info.balance,
+      currency: info.currency || 'RUB',
+      enoughmoneyto: '',
+    }
+  },
+}
diff --git a/apps/api/src/services/providers/index.ts b/apps/api/src/services/providers/index.ts
index e4e2083..07dc70b 100644
--- a/apps/api/src/services/providers/index.ts
+++ b/apps/api/src/services/providers/index.ts
@@ -1,28 +1,16 @@
-import type { ProviderAdapter, SyncResult } from './types.js'
-import { syncFromBillmanager } from '../billmanager/sync.js'
+import type { schema } from '@cfdm/db'
+
+import { billmanagerAccountRowForSync } from '../billmanager/context.js'
+import { fourvpsAccountRowForSync } from '../fourvps/context.js'
 import type { BillmanagerSyncAccount } from '../billmanager/context.js'
-import { testConnection as bmTestConnection } from '../billmanager/operations.js'
+import type { FourvpsSyncAccount } from '../fourvps/context.js'
 
-export const billmanagerAdapter: ProviderAdapter = {
-  type: 'billmanager',
+import { billmanagerAdapter } from './billmanager-adapter.js'
+import { fourvpsAdapter } from './fourvps-adapter.js'
+import type { ProviderAdapter } from './types.js'
 
-  async testConnection(apiBaseUrl: string, apiCredentials: string) {
-    const result = await bmTestConnection(apiBaseUrl, apiCredentials)
-    return { ok: result.ok, message: result.error }
-  },
-
-  async syncAccount(account: BillmanagerSyncAccount, options?: { skipTariffs?: boolean; skipVpsPayments?: boolean }): Promise<SyncResult> {
-    const result = await syncFromBillmanager(account, options)
-    return {
-      vpsCount: result.vpsCount,
-      paymentsCount: result.paymentsCount,
-      tariffsCount: result.tariffsCount,
-      balance: result.balance,
-      syncSummary: result.syncSummary,
-      newTariffs: result.newTariffs,
-    }
-  },
-}
+export { billmanagerAdapter } from './billmanager-adapter.js'
+export { fourvpsAdapter } from './fourvps-adapter.js'
 
 export const manualAdapter: ProviderAdapter = {
   type: 'manual',
@@ -43,6 +31,7 @@ export const manualAdapter: ProviderAdapter = {
 
 const adapters: Record<string, ProviderAdapter> = {
   billmanager: billmanagerAdapter,
+  '4vps': fourvpsAdapter,
   manual: manualAdapter,
   none: manualAdapter,
 }
@@ -51,3 +40,33 @@ export function getProviderAdapter(apiType: string | null | undefined): Provider
   const key = (apiType || 'none').toLowerCase().trim()
   return adapters[key] ?? manualAdapter
 }
+
+type AccountRow = typeof schema.providerAccounts.$inferSelect
+type ProviderRow = typeof schema.providers.$inferSelect
+
+export type SyncReadyAccount = BillmanagerSyncAccount | FourvpsSyncAccount
+
+export function resolveSyncAccount(
+  accountRow: AccountRow | null | undefined,
+  providerRow: ProviderRow | null | undefined,
+): { apiType: string; account: SyncReadyAccount } | null {
+  if (!accountRow) return null
+  const apiType = String(providerRow?.apiType || accountRow.apiType || '')
+    .trim()
+    .toLowerCase()
+
+  if (apiType === 'billmanager') {
+    const account = billmanagerAccountRowForSync(accountRow, providerRow)
+    return account ? { apiType, account } : null
+  }
+  if (apiType === '4vps') {
+    const account = fourvpsAccountRowForSync(accountRow, providerRow)
+    return account ? { apiType, account } : null
+  }
+  return null
+}
+
+export const SYNC_SETUP_ERRORS: Record<string, string> = {
+  billmanager: 'Укажите в настройках хостера тип API BILLmanager и URL; в аккаунте — логин и пароль API',
+  '4vps': 'Укажите в настройках хостера тип API 4VPS и URL; в аккаунте — Panel ID и API Key',
+}
diff --git a/apps/api/src/services/providers/sync-job.ts b/apps/api/src/services/providers/sync-job.ts
new file mode 100644
index 0000000..36a7947
--- /dev/null
+++ b/apps/api/src/services/providers/sync-job.ts
@@ -0,0 +1,65 @@
+/**
+ * Generic account sync with sync_log recording
+ */
+
+import { eq } from 'drizzle-orm'
+import { getDb, schema } from '@cfdm/db'
+
+import type { ProviderAdapter, SyncResult } from './types.js'
+
+export interface RunAccountSyncResult extends SyncResult {
+  ok: true
+  logId: string
+}
+
+export async function runAccountSync(
+  adapter: ProviderAdapter,
+  account: unknown,
+  opts: { skipTariffs?: boolean; skipVpsPayments?: boolean } = {},
+): Promise<RunAccountSyncResult> {
+  const db = getDb()
+  const accountRow = account as { id: string }
+  const logId = `sync-${accountRow.id}-${Date.now()}`
+
+  db.insert(schema.syncLog)
+    .values({
+      id: logId,
+      accountId: accountRow.id,
+      startedAt: new Date().toISOString(),
+      status: 'running',
+    })
+    .run()
+
+  try {
+    const result = await adapter.syncAccount(account, opts)
+    const summaryPayload = {
+      ...(result.syncSummary || {}),
+      vpsCount: result.vpsCount,
+      paymentsCount: result.paymentsCount,
+      tariffsCount: result.tariffsCount ?? 0,
+    }
+    db.update(schema.syncLog)
+      .set({
+        finishedAt: new Date().toISOString(),
+        status: 'ok',
+        vpsCount: result.vpsCount,
+        paymentsCount: result.paymentsCount,
+        summary: JSON.stringify(summaryPayload),
+      })
+      .where(eq(schema.syncLog.id, logId))
+      .run()
+    return { ok: true, logId, ...result }
+  } catch (err) {
+    const message = err instanceof Error ? err.message : 'Unknown error'
+    db.update(schema.syncLog)
+      .set({
+        finishedAt: new Date().toISOString(),
+        status: 'error',
+        error: message,
+        summary: JSON.stringify({ error: message }),
+      })
+      .where(eq(schema.syncLog.id, logId))
+      .run()
+    throw err
+  }
+}
diff --git a/apps/api/src/services/providers/types.ts b/apps/api/src/services/providers/types.ts
index cc74fa6..babb851 100644
--- a/apps/api/src/services/providers/types.ts
+++ b/apps/api/src/services/providers/types.ts
@@ -21,4 +21,9 @@ export interface ProviderAdapter {
     account: unknown,
     options?: { skipTariffs?: boolean; skipVpsPayments?: boolean },
   ): Promise<SyncResult>
+  fetchBalance?(account: unknown): Promise<{
+    balance?: number
+    currency?: string
+    enoughmoneyto?: string
+  }>
 }
diff --git a/apps/api/src/services/scheduler.ts b/apps/api/src/services/scheduler.ts
index 048bf3a..9efb045 100644
--- a/apps/api/src/services/scheduler.ts
+++ b/apps/api/src/services/scheduler.ts
@@ -2,8 +2,8 @@ import { sql } from 'drizzle-orm'
 import { getDb, schema } from '@cfdm/db'
 import { settingsRepository } from '@cfdm/db/repositories/settings'
 
-import { billmanagerAccountRowForSync } from './billmanager/context.js'
-import { runBillmanagerAccountSync } from './billmanager/sync-job.js'
+import { resolveSyncAccount, getProviderAdapter, type SyncReadyAccount } from './providers/index.js'
+import { runAccountSync } from './providers/sync-job.js'
 import { runVpsUptimeChecks } from './uptime-check.js'
 import { publishMany, publishNotification } from './notifications/engine.js'
 import {
@@ -23,21 +23,29 @@ const SETTINGS_ID = 'settings-main'
 
 type AccountRow = typeof schema.providerAccounts.$inferSelect
 
-function getBillmanagerAccounts(): NonNullable<ReturnType<typeof billmanagerAccountRowForSync>>[] {
+interface SyncableAccountEntry {
+  account: SyncReadyAccount
+  apiType: string
+}
+
+function getSyncableAccounts(): SyncableAccountEntry[] {
   const db = getDb()
   const rows = db
     .all<AccountRow>(sql`
       SELECT pa.* FROM provider_accounts pa
       INNER JOIN providers p ON p.id = pa.providerId
-      WHERE lower(trim(COALESCE(p.apiType, ''))) = 'billmanager'
+      WHERE lower(trim(COALESCE(p.apiType, ''))) IN ('billmanager', '4vps')
         AND length(trim(COALESCE(p.apiBaseUrl, ''))) > 0
         AND pa.apiCredentials IS NOT NULL AND length(trim(pa.apiCredentials)) > 0
     `)
   const providers = db.select().from(schema.providers).all()
   const providerById = new Map(providers.map((p) => [p.id, p]))
   return rows
-    .map((a) => billmanagerAccountRowForSync(a, providerById.get(a.providerId)))
-    .filter((a): a is NonNullable<typeof a> => a != null)
+    .map((a) => {
+      const resolved = resolveSyncAccount(a, providerById.get(a.providerId))
+      return resolved ? { account: resolved.account, apiType: resolved.apiType } : null
+    })
+    .filter((e): e is SyncableAccountEntry => e != null)
 }
 
 export async function runNotificationTick(): Promise<void> {
@@ -56,13 +64,14 @@ export async function runScheduledSync(): Promise<void> {
     const settings = settingsRepository.getRow(SETTINGS_ID)
     if (!settings?.syncEnabled) return
 
-    const accounts = getBillmanagerAccounts()
+    const entries = getSyncableAccounts()
     const digestLines: string[] = []
     const lowBalanceLines: string[] = []
 
-    for (const account of accounts) {
+    for (const { account, apiType } of entries) {
       try {
-        const result = await runBillmanagerAccountSync(account, { skipTariffs: true })
+        const adapter = getProviderAdapter(apiType)
+        const result = await runAccountSync(adapter, account, { skipTariffs: true })
         const s = result.syncSummary
         const parts: string[] = []
         if (s.added?.length) parts.push(`+${s.added.length} VPS`)
@@ -103,12 +112,13 @@ export async function runScheduledSyncTariffs(): Promise<void> {
     const settings = settingsRepository.getRow(SETTINGS_ID)
     if (!settings?.syncEnabled) return
 
-    const accounts = getBillmanagerAccounts()
+    const entries = getSyncableAccounts()
     const providers = getDb().select().from(schema.providers).all()
 
-    for (const account of accounts) {
+    for (const { account, apiType } of entries) {
       try {
-        const result = await runBillmanagerAccountSync(account, { skipVpsPayments: true })
+        const adapter = getProviderAdapter(apiType)
+        const result = await runAccountSync(adapter, account, { skipVpsPayments: true })
         const newTariffs = result.newTariffs || []
         if (newTariffs.length > 0 && settings.notifyNewTariffsEnabled) {
           const provider = providers.find((p) => p.id === account.providerId)
diff --git a/apps/api/src/utils/api-credentials.test.ts b/apps/api/src/utils/api-credentials.test.ts
new file mode 100644
index 0000000..e49bb02
--- /dev/null
+++ b/apps/api/src/utils/api-credentials.test.ts
@@ -0,0 +1,35 @@
+import { describe, expect, it } from 'vitest'
+import {
+  buildFourVpsCredentials,
+  parseFourVpsCredentials,
+} from '@cfdm/shared/utils/api-credentials'
+
+describe('parseFourVpsCredentials', () => {
+  it('parses panelId:apiKey', () => {
+    expect(parseFourVpsCredentials('1:secret-key')).toEqual({
+      panelId: 1,
+      apiKey: 'secret-key',
+    })
+  })
+
+  it('returns apiKey only when no colon', () => {
+    expect(parseFourVpsCredentials('secret-only')).toEqual({
+      panelId: null,
+      apiKey: 'secret-only',
+    })
+  })
+
+  it('handles empty', () => {
+    expect(parseFourVpsCredentials('')).toEqual({ panelId: null, apiKey: '' })
+  })
+})
+
+describe('buildFourVpsCredentials', () => {
+  it('builds panelId:apiKey', () => {
+    expect(buildFourVpsCredentials('1', 'key')).toBe('1:key')
+  })
+
+  it('returns key only without panel', () => {
+    expect(buildFourVpsCredentials('', 'key')).toBe('key')
+  })
+})
diff --git a/apps/web/src/components/domain/account-edit-sheet.tsx b/apps/web/src/components/domain/account-edit-sheet.tsx
index d7f21d5..43eef2d 100644
--- a/apps/web/src/components/domain/account-edit-sheet.tsx
+++ b/apps/web/src/components/domain/account-edit-sheet.tsx
@@ -14,6 +14,7 @@ import { providerAccountSchema, type ProviderAccountFormValues } from '@/lib/sch
 import type { BillingMode, Provider } from '@/types/entities'
 import { billingModeLabel } from '@/lib/format'
 import { api, ApiError } from '@/lib/api-client'
+import { accountCredentialLabels } from '@/lib/provider-sync'
 
 const EMPTY: ProviderAccountFormValues = {
   providerId: '',
@@ -59,10 +60,11 @@ export function ProviderAccountEditSheet({
   onBalanceRefreshed,
 }: ProviderAccountEditSheetProps) {
   const isEdit = Boolean(defaultValues.id)
+  const initialProvider = providers.find((p) => p.id === defaultValues.providerId)
 
   const testMut = useMutation({
-    mutationFn: async (values: { apiBaseUrl: string; apiCredentials: string }) =>
-      api.testConnection(values.apiBaseUrl, values.apiCredentials),
+    mutationFn: async (values: { apiBaseUrl: string; apiCredentials: string; apiType: string }) =>
+      api.testConnection(values.apiBaseUrl, values.apiCredentials, values.apiType),
     onSuccess: () => toast.success('Подключение успешно'),
     onError: (e: unknown) => toast.error(e instanceof ApiError ? e.message : 'Ошибка подключения'),
   })
@@ -81,7 +83,11 @@ export function ProviderAccountEditSheet({
       open={open}
       onOpenChange={onOpenChange}
       title={isEdit ? 'Редактировать аккаунт' : 'Новый аккаунт'}
-      description="API-креды хранятся на сервере и используются для синка с BILLmanager"
+      description={
+        initialProvider?.apiType === '4vps'
+          ? 'Panel ID и API Key хранятся на сервере и используются для синка с 4VPS'
+          : 'API-креды хранятся на сервере и используются для синка с BILLmanager'
+      }
       schema={providerAccountSchema as unknown as ZodType<ProviderAccountFormValues>}
       defaultValues={defaultValues}
       onSubmit={onSubmit}
@@ -96,6 +102,7 @@ export function ProviderAccountEditSheet({
         const apiPassword = watch('apiPassword')?.trim() ?? ''
         const apiCredentials = buildApiCredentials(apiLogin, apiPassword)
         const canTest = Boolean(apiBaseUrl && apiCredentials)
+        const credLabels = accountCredentialLabels(provider?.apiType)
 
         return (
           <>
@@ -111,13 +118,18 @@ export function ProviderAccountEditSheet({
             <FormField label="Название" htmlFor="acc-name" error={errors.name?.message} invalid={!!errors.name}>
               <Input id="acc-name" aria-invalid={!!errors.name} {...register('name')} />
             </FormField>
-            <FormField label="Логин API" htmlFor="acc-login">
-              <Input id="acc-login" autoComplete="off" {...register('apiLogin')} />
+            <FormField label={credLabels.loginLabel} htmlFor="acc-login">
+              <Input
+                id="acc-login"
+                autoComplete="off"
+                placeholder={credLabels.loginPlaceholder || undefined}
+                {...register('apiLogin')}
+              />
             </FormField>
             <FormField
-              label={isEdit ? 'Пароль API (необязательно)' : 'Пароль API'}
+              label={isEdit ? `${credLabels.passwordLabel} (необязательно)` : credLabels.passwordLabel}
               htmlFor="acc-password"
-              description={isEdit ? 'Оставьте пустым, чтобы сохранить существующий пароль' : undefined}
+              description={isEdit ? 'Оставьте пустым, чтобы сохранить существующий ключ' : undefined}
             >
               <Input id="acc-password" type="password" autoComplete="new-password" {...register('apiPassword')} />
             </FormField>
@@ -128,7 +140,13 @@ export function ProviderAccountEditSheet({
                 size="sm"
                 disabled={!canTest}
                 loading={testMut.isPending}
-                onClick={() => testMut.mutate({ apiBaseUrl, apiCredentials })}
+                onClick={() =>
+                  testMut.mutate({
+                    apiBaseUrl,
+                    apiCredentials,
+                    apiType: provider?.apiType ?? 'billmanager',
+                  })
+                }
               >
                 <PlugIcon data-icon="inline-start" />
                 Проверить подключение
diff --git a/apps/web/src/components/domain/provider-edit-sheet.tsx b/apps/web/src/components/domain/provider-edit-sheet.tsx
index 0d2bd4c..58be12a 100644
--- a/apps/web/src/components/domain/provider-edit-sheet.tsx
+++ b/apps/web/src/components/domain/provider-edit-sheet.tsx
@@ -68,12 +68,25 @@ export function ProviderEditSheet({
                 onValueChange={(v) => setValue('apiType', (v ?? 'none') as ApiType, { shouldValidate: true })}
                 options={[
                   { value: 'billmanager', label: 'BILLmanager' },
+                  { value: '4vps', label: '4VPS.SU' },
                   { value: 'none', label: 'Нет' },
                 ]}
               />
             </FormField>
-            <FormField label="API URL" htmlFor="pr-apiurl" description="Один URL на хостера для BILLmanager">
-              <Input id="pr-apiurl" {...register('apiBaseUrl')} />
+            <FormField
+              label="API URL"
+              htmlFor="pr-apiurl"
+              description={
+                watch('apiType') === '4vps'
+                  ? 'Базовый URL API, например https://4vps.su/api'
+                  : 'Один URL на хостера для BILLmanager'
+              }
+            >
+              <Input
+                id="pr-apiurl"
+                placeholder={watch('apiType') === '4vps' ? 'https://4vps.su/api' : undefined}
+                {...register('apiBaseUrl')}
+              />
             </FormField>
             <div className="grid grid-cols-3 gap-3">
               <FormField label="Валюта" htmlFor="pr-cur">
diff --git a/apps/web/src/lib/account-health.ts b/apps/web/src/lib/account-health.ts
index 542a15f..e5520e4 100644
--- a/apps/web/src/lib/account-health.ts
+++ b/apps/web/src/lib/account-health.ts
@@ -5,7 +5,8 @@ import type {
   BalanceLedgerRow,
 } from '@/types/entities'
 import { accountBalanceApi } from '@/lib/account'
-import { accountBillmanagerUiReady } from '@/lib/billmanager'
+import { isSyncApiType } from '@cfdm/shared/contracts/provider'
+import { accountSyncUiReady } from '@/lib/provider-sync'
 import {
   accountHasApiLedgerMismatch,
   getStaleSyncAccountIds,
@@ -40,7 +41,7 @@ export function getAccountHealthFlags(
   const provider = ctx.providers.find((p) => p.id === account.providerId)
   const flags: AccountHealthFlag[] = []
 
-  if (provider?.apiType === 'billmanager' && !account.apiCredentialsSet) {
+  if (isSyncApiType(provider?.apiType) && !account.apiCredentialsSet) {
     flags.push('no-creds')
   }
 
@@ -99,5 +100,5 @@ export function countLowBalanceAccounts(
 
 export function isAccountSyncable(account: ProviderAccount, providers: Provider[]): boolean {
   const provider = providers.find((p) => p.id === account.providerId)
-  return accountBillmanagerUiReady(account, provider)
+  return accountSyncUiReady(account, provider)
 }
diff --git a/apps/web/src/lib/api-client.ts b/apps/web/src/lib/api-client.ts
index b1cc500..8c4d3f0 100644
--- a/apps/web/src/lib/api-client.ts
+++ b/apps/web/src/lib/api-client.ts
@@ -101,10 +101,10 @@ export const api = {
       `/api/sync/${encodeURIComponent(accountId)}/balance`,
     ),
 
-  testConnection: (apiBaseUrl: string, apiCredentials: string) =>
+  testConnection: (apiBaseUrl: string, apiCredentials: string, apiType?: string) =>
     fetchApi('/api/sync/test-connection', {
       method: 'POST',
-      body: JSON.stringify({ apiBaseUrl, apiCredentials }),
+      body: JSON.stringify({ apiBaseUrl, apiCredentials, apiType }),
     }),
 
   fetchSyncStatus: () => fetchApi('/api/sync/status'),
diff --git a/apps/web/src/lib/billmanager.ts b/apps/web/src/lib/billmanager.ts
index 50211c8..20a0680 100644
--- a/apps/web/src/lib/billmanager.ts
+++ b/apps/web/src/lib/billmanager.ts
@@ -1,45 +1,12 @@
-import type { ProviderAccount, Provider } from '@/types/entities'
-
-export function providerByIdMap(providers: Provider[]): Map<string, Provider> {
-  return new Map(providers.map((p) => [p.id, p]))
-}
-
-export function billmanagerSyncableAccounts(
-  providerAccounts: ProviderAccount[],
-  providers: Provider[],
-): ProviderAccount[] {
-  const pmap = providerByIdMap(providers)
-  return providerAccounts.filter((a) => {
-    const p = pmap.get(a.providerId)
-    return p?.apiType === 'billmanager' && Boolean((p.apiBaseUrl || '').trim()) && a.apiCredentialsSet
-  })
-}
-
-export function accountBillmanagerUiReady(
-  account: ProviderAccount,
-  provider?: Provider | null,
-): boolean {
-  return (
-    provider?.apiType === 'billmanager' &&
-    Boolean((provider.apiBaseUrl || '').trim()) &&
-    Boolean(account.apiCredentialsSet)
-  )
-}
-
-export function accountUsesBillmanagerBalanceApi(
-  account: ProviderAccount,
-  provider?: Provider | null,
-): boolean {
-  return provider?.apiType === 'billmanager' && account.balance_api != null
-}
-
-export function accountSelectLabel(
-  account: ProviderAccount,
-  providerById: Map<string, Provider>,
-  scopedProviderId?: string,
-): string {
-  const name = account.name?.trim() || '—'
-  if (scopedProviderId) return name
-  const providerName = providerById.get(account.providerId)?.name ?? '—'
-  return `${providerName} / ${name}`
-}
+export {
+  providerByIdMap,
+  syncableAccounts,
+  billmanagerSyncableAccounts,
+  accountSyncUiReady,
+  accountBillmanagerUiReady,
+  accountUsesApiBalance,
+  accountUsesBillmanagerBalanceApi,
+  accountSelectLabel,
+  isSyncApiType,
+  accountCredentialLabels,
+} from './provider-sync'
diff --git a/apps/web/src/lib/provider-sync.ts b/apps/web/src/lib/provider-sync.ts
new file mode 100644
index 0000000..24c4341
--- /dev/null
+++ b/apps/web/src/lib/provider-sync.ts
@@ -0,0 +1,77 @@
+import { isSyncApiType } from '@cfdm/shared/contracts/provider'
+
+import type { ProviderAccount, Provider } from '@/types/entities'
+
+export { isSyncApiType }
+
+export function providerByIdMap(providers: Provider[]): Map<string, Provider> {
+  return new Map(providers.map((p) => [p.id, p]))
+}
+
+export function syncableAccounts(
+  providerAccounts: ProviderAccount[],
+  providers: Provider[],
+): ProviderAccount[] {
+  const pmap = providerByIdMap(providers)
+  return providerAccounts.filter((a) => {
+    const p = pmap.get(a.providerId)
+    return isSyncApiType(p?.apiType) && Boolean((p?.apiBaseUrl || '').trim()) && a.apiCredentialsSet
+  })
+}
+
+/** @deprecated Используйте syncableAccounts */
+export const billmanagerSyncableAccounts = syncableAccounts
+
+export function accountSyncUiReady(
+  account: ProviderAccount,
+  provider?: Provider | null,
+): boolean {
+  return (
+    isSyncApiType(provider?.apiType) &&
+    Boolean((provider?.apiBaseUrl || '').trim()) &&
+    Boolean(account.apiCredentialsSet)
+  )
+}
+
+/** @deprecated Используйте accountSyncUiReady */
+export const accountBillmanagerUiReady = accountSyncUiReady
+
+export function accountUsesApiBalance(
+  account: ProviderAccount,
+  provider?: Provider | null,
+): boolean {
+  return isSyncApiType(provider?.apiType) && account.balance_api != null
+}
+
+/** @deprecated Используйте accountUsesApiBalance */
+export const accountUsesBillmanagerBalanceApi = accountUsesApiBalance
+
+export function accountSelectLabel(
+  account: ProviderAccount,
+  providerById: Map<string, Provider>,
+  scopedProviderId?: string,
+): string {
+  const name = account.name?.trim() || '—'
+  if (scopedProviderId) return name
+  const providerName = providerById.get(account.providerId)?.name ?? '—'
+  return `${providerName} / ${name}`
+}
+
+export function accountCredentialLabels(apiType?: string | null): {
+  loginLabel: string
+  passwordLabel: string
+  loginPlaceholder: string
+} {
+  if (String(apiType).toLowerCase() === '4vps') {
+    return {
+      loginLabel: 'Panel ID',
+      passwordLabel: 'API Key',
+      loginPlaceholder: '1',
+    }
+  }
+  return {
+    loginLabel: 'Логин API',
+    passwordLabel: 'Пароль API',
+    loginPlaceholder: '',
+  }
+}
diff --git a/apps/web/src/lib/schemas.ts b/apps/web/src/lib/schemas.ts
index cbb7d58..5876bbe 100644
--- a/apps/web/src/lib/schemas.ts
+++ b/apps/web/src/lib/schemas.ts
@@ -1,4 +1,5 @@
 import { z } from 'zod'
+import { apiTypeSchema as sharedApiTypeSchema } from '@cfdm/shared/contracts/provider'
 import { billingModeSchema as sharedBillingModeSchema } from '@cfdm/shared/contracts/provider-account'
 import { customFieldsSchema } from '@cfdm/shared/contracts/custom-fields'
 
@@ -12,7 +13,7 @@ export const paymentTypeSchema = z.enum([
   'monthly_debit',
 ])
 export const ledgerDirectionSchema = z.enum(['credit', 'debit'])
-export const apiTypeSchema = z.enum(['billmanager', 'none'])
+export const apiTypeSchema = sharedApiTypeSchema
 
 export const providerSchema = z.object({
   id: z.string().min(1).optional(),
diff --git a/apps/web/src/types/entities.ts b/apps/web/src/types/entities.ts
index 1827490..8eabf71 100644
--- a/apps/web/src/types/entities.ts
+++ b/apps/web/src/types/entities.ts
@@ -1,5 +1,7 @@
 import type { CustomFieldDef } from '@cfdm/shared/contracts/custom-fields'
 
+import type { ApiType as SharedApiType } from '@cfdm/shared/contracts/provider'
+
 export type VpsStatus = 'active' | 'paused' | 'archived'
 export type TariffType = 'daily' | 'monthly'
 export type BillingMode = 'daily' | 'monthly'
@@ -9,7 +11,7 @@ export type PaymentType =
   | 'daily_debit'
   | 'monthly_debit'
 export type LedgerDirection = 'credit' | 'debit'
-export type ApiType = 'billmanager' | 'none'
+export type ApiType = SharedApiType
 
 export interface Provider {
   id: string
diff --git a/packages/db/src/test-setup.ts b/packages/db/src/test-setup.ts
index 566bff0..8327e3c 100644
--- a/packages/db/src/test-setup.ts
+++ b/packages/db/src/test-setup.ts
@@ -37,9 +37,41 @@ CREATE TABLE IF NOT EXISTS provider_accounts (
 CREATE TABLE IF NOT EXISTS vps (
   id TEXT PRIMARY KEY,
   ip TEXT,
+  ipv6 TEXT,
+  additionalIps TEXT,
+  dns TEXT,
   providerId TEXT,
   providerAccountId TEXT,
+  country TEXT,
+  city TEXT,
+  datacenter TEXT,
+  os TEXT,
+  vcpu INTEGER,
+  ramGb REAL,
+  diskGb INTEGER,
+  diskType TEXT,
+  virtualization TEXT,
+  bandwidthTb INTEGER,
+  sshPort INTEGER,
+  rootUser TEXT,
+  purpose TEXT,
+  environment TEXT,
+  project TEXT,
+  projectId TEXT,
+  monitoringEnabled INTEGER,
+  backupEnabled INTEGER,
   status TEXT,
+  tariffType TEXT,
+  currency TEXT,
+  dailyRate REAL,
+  monthlyRate REAL,
+  createdAt TEXT,
+  paidUntil TEXT,
+  notes TEXT,
+  userOverrides TEXT,
+  customData TEXT,
+  last_health_status TEXT,
+  last_health_checked_at TEXT,
   FOREIGN KEY (providerId) REFERENCES providers(id),
   FOREIGN KEY (providerAccountId) REFERENCES provider_accounts(id)
 );
@@ -75,6 +107,10 @@ CREATE TABLE IF NOT EXISTS sync_log (
   startedAt TEXT NOT NULL,
   finishedAt TEXT,
   status TEXT,
+  vpsCount INTEGER,
+  paymentsCount INTEGER,
+  error TEXT,
+  summary TEXT,
   FOREIGN KEY (accountId) REFERENCES provider_accounts(id)
 );
 
@@ -83,6 +119,22 @@ CREATE TABLE IF NOT EXISTS active_tariffs (
   providerAccountId TEXT NOT NULL,
   providerId TEXT NOT NULL,
   externalId TEXT NOT NULL,
+  datacenterKey TEXT,
+  datacenterName TEXT,
+  name TEXT,
+  desc TEXT,
+  vcpu INTEGER,
+  ramGb REAL,
+  diskGb INTEGER,
+  diskType TEXT,
+  virtualization TEXT,
+  channel TEXT,
+  location TEXT,
+  country TEXT,
+  cpuModel TEXT,
+  orderAvailable INTEGER,
+  price TEXT,
+  syncedAt TEXT,
   FOREIGN KEY (providerAccountId) REFERENCES provider_accounts(id),
   FOREIGN KEY (providerId) REFERENCES providers(id)
 );
diff --git a/packages/shared/src/contracts/provider.ts b/packages/shared/src/contracts/provider.ts
index c438f80..7327cf8 100644
--- a/packages/shared/src/contracts/provider.ts
+++ b/packages/shared/src/contracts/provider.ts
@@ -1,5 +1,17 @@
 import { z } from 'zod'
 
+export const API_TYPES = ['billmanager', '4vps', 'none'] as const
+export type ApiType = (typeof API_TYPES)[number]
+export const apiTypeSchema = z.enum(API_TYPES).optional().default('none')
+
+export const SYNC_API_TYPES = ['billmanager', '4vps'] as const
+export type SyncApiType = (typeof SYNC_API_TYPES)[number]
+
+export function isSyncApiType(apiType?: string | null): apiType is SyncApiType {
+  const key = String(apiType || '').toLowerCase()
+  return (SYNC_API_TYPES as readonly string[]).includes(key)
+}
+
 export const providerSchema = z.object({
   id: z.string().optional(),
   name: z.string().min(1, 'Name is required'),
@@ -9,7 +21,7 @@ export const providerSchema = z.object({
   usdRate: z.string().optional().default(''),
   eurRate: z.string().optional().default(''),
   notes: z.string().optional().default(''),
-  apiType: z.string().optional().default(''),
+  apiType: apiTypeSchema,
   apiBaseUrl: z.string().optional().default(''),
 })
 
diff --git a/packages/shared/src/utils/api-credentials.ts b/packages/shared/src/utils/api-credentials.ts
index 782bccb..7fd8d69 100644
--- a/packages/shared/src/utils/api-credentials.ts
+++ b/packages/shared/src/utils/api-credentials.ts
@@ -13,3 +13,32 @@ export function buildApiCredentials(login: string, password: string): string {
   if (!l) return p
   return p ? `${l}:${p}` : ''
 }
+
+export interface FourVpsCredentials {
+  panelId: number | null
+  apiKey: string
+}
+
+/** Разбор 4VPS-кредов формата `panelId:apiKey` (panelId опционален). */
+export function parseFourVpsCredentials(credentials: string | null | undefined): FourVpsCredentials {
+  const cred = String(credentials ?? '').trim()
+  if (!cred) return { panelId: null, apiKey: '' }
+  const idx = cred.indexOf(':')
+  if (idx <= 0) return { panelId: null, apiKey: cred }
+  const panelPart = cred.slice(0, idx).trim()
+  const apiKey = cred.slice(idx + 1)
+  const panelId = panelPart ? Number.parseInt(panelPart, 10) : null
+  return {
+    panelId: panelId != null && Number.isFinite(panelId) ? panelId : null,
+    apiKey,
+  }
+}
+
+/** Собрать 4VPS-креды: panelId + API key. */
+export function buildFourVpsCredentials(panelId: string, apiKey: string): string {
+  const pid = panelId.trim()
+  const key = apiKey
+  if (!pid && !key) return ''
+  if (!pid) return key
+  return key ? `${pid}:${key}` : pid
+}
diff --git a/packages/shared/src/utils/inventory-health.ts b/packages/shared/src/utils/inventory-health.ts
index b92fcbb..266b794 100644
--- a/packages/shared/src/utils/inventory-health.ts
+++ b/packages/shared/src/utils/inventory-health.ts
@@ -1,4 +1,5 @@
 import { accountBalanceApi } from './account-balance.js'
+import { isSyncApiType } from '../contracts/provider.js'
 import { getPaidUntilDate, type PaidUntilContext } from './paid-until.js'
 
 export const STALE_SYNC_HOURS = 48
@@ -166,12 +167,12 @@ export function computeInventoryHealth(input: InventoryHealthInput): InventoryIs
     })
   }
 
-  const bmAccounts = providerAccounts.filter((a) => {
+  const syncAccounts = providerAccounts.filter((a) => {
     const p = providerById.get(a.providerId)
-    return p?.apiType === 'billmanager' && Boolean((p.apiBaseUrl || '').trim()) && a.apiCredentialsSet
+    return isSyncApiType(p?.apiType) && Boolean((p?.apiBaseUrl || '').trim()) && a.apiCredentialsSet
   })
   const staleMs = STALE_SYNC_HOURS * 60 * 60 * 1000
-  const staleAccounts = bmAccounts.filter((a) => {
+  const staleAccounts = syncAccounts.filter((a) => {
     const t = lastOkSyncFinishedAt(a.id, syncLog)
     if (t == null) return true
     return now.getTime() - t > staleMs
@@ -226,12 +227,12 @@ export function getStaleSyncAccountIds(
   now = new Date(),
 ): string[] {
   const providerById = new Map(providers.map((p) => [p.id, p]))
-  const bmAccounts = providerAccounts.filter((a) => {
+  const syncAccounts = providerAccounts.filter((a) => {
     const p = providerById.get(a.providerId)
-    return p?.apiType === 'billmanager' && Boolean((p.apiBaseUrl || '').trim()) && a.apiCredentialsSet
+    return isSyncApiType(p?.apiType) && Boolean((p?.apiBaseUrl || '').trim()) && a.apiCredentialsSet
   })
   const staleMs = STALE_SYNC_HOURS * 60 * 60 * 1000
-  return bmAccounts
+  return syncAccounts
     .filter((a) => {
       const t = lastOkSyncFinishedAt(a.id, syncLog)
       if (t == null) return true
diff --git a/packages/shared/tsconfig.json b/packages/shared/tsconfig.json
index 65b1f81..3ee52b7 100644
--- a/packages/shared/tsconfig.json
+++ b/packages/shared/tsconfig.json
@@ -11,5 +11,6 @@
     "declarationMap": true,
     "verbatimModuleSyntax": false
   },
-  "include": ["src/**/*.ts"]
+  "include": ["src/**/*.ts"],
+  "exclude": ["src/**/*.test.ts"]
 }