diff --git a/apps/sim/.env.example b/apps/sim/.env.example
index 8e845f6b2a..7c6ca476da 100644
--- a/apps/sim/.env.example
+++ b/apps/sim/.env.example
@@ -24,3 +24,7 @@ API_ENCRYPTION_KEY=your_api_encryption_key # Use `openssl rand -hex 32` to gener
 # OLLAMA_URL=http://localhost:11434  # URL for local Ollama server - uncomment if using local models
 # VLLM_BASE_URL=http://localhost:8000    # Base URL for your self-hosted vLLM (OpenAI-compatible)
 # VLLM_API_KEY=                          # Optional bearer token if your vLLM instance requires auth
+
+# Admin API (Optional - for self-hosted GitOps)
+# ADMIN_API_KEY=  # Use `openssl rand -hex 32` to generate. Enables admin API for workflow export/import.
+                  # Usage: curl -H "x-admin-key: your_key" https://your-instance/api/v1/admin/workspaces
diff --git a/apps/sim/app/api/v1/admin/auth.ts b/apps/sim/app/api/v1/admin/auth.ts
new file mode 100644
index 0000000000..642968b996
--- /dev/null
+++ b/apps/sim/app/api/v1/admin/auth.ts
@@ -0,0 +1,79 @@
+/**
+ * Admin API Authentication
+ *
+ * Authenticates admin API requests using the ADMIN_API_KEY environment variable.
+ * Designed for self-hosted deployments where GitOps/scripted access is needed.
+ *
+ * Usage:
+ *   curl -H "x-admin-key: your_admin_key" https://your-instance/api/v1/admin/...
+ */
+
+import { createHash, timingSafeEqual } from 'crypto'
+import type { NextRequest } from 'next/server'
+import { env } from '@/lib/core/config/env'
+import { createLogger } from '@/lib/logs/console/logger'
+
+const logger = createLogger('AdminAuth')
+
+export interface AdminAuthSuccess {
+  authenticated: true
+}
+
+export interface AdminAuthFailure {
+  authenticated: false
+  error: string
+  notConfigured?: boolean
+}
+
+export type AdminAuthResult = AdminAuthSuccess | AdminAuthFailure
+
+/**
+ * Authenticate an admin API request.
+ *
+ * @param request - The incoming Next.js request
+ * @returns Authentication result with success status and optional error
+ */
+export function authenticateAdminRequest(request: NextRequest): AdminAuthResult {
+  const adminKey = env.ADMIN_API_KEY
+
+  if (!adminKey) {
+    logger.warn('ADMIN_API_KEY environment variable is not set')
+    return {
+      authenticated: false,
+      error: 'Admin API is not configured. Set ADMIN_API_KEY environment variable.',
+      notConfigured: true,
+    }
+  }
+
+  const providedKey = request.headers.get('x-admin-key')
+
+  if (!providedKey) {
+    return {
+      authenticated: false,
+      error: 'Admin API key required. Provide x-admin-key header.',
+    }
+  }
+
+  if (!constantTimeCompare(providedKey, adminKey)) {
+    logger.warn('Invalid admin API key attempted', { keyPrefix: providedKey.slice(0, 8) })
+    return {
+      authenticated: false,
+      error: 'Invalid admin API key',
+    }
+  }
+
+  return { authenticated: true }
+}
+
+/**
+ * Constant-time string comparison.
+ *
+ * @param a - First string to compare
+ * @param b - Second string to compare
+ * @returns True if strings are equal, false otherwise
+ */
+function constantTimeCompare(a: string, b: string): boolean {
+  const aHash = createHash('sha256').update(a).digest()
+  const bHash = createHash('sha256').update(b).digest()
+  return timingSafeEqual(aHash, bHash)
+}
diff --git a/apps/sim/app/api/v1/admin/index.ts b/apps/sim/app/api/v1/admin/index.ts
new file mode 100644
index 0000000000..6dea03e348
--- /dev/null
+++ b/apps/sim/app/api/v1/admin/index.ts
@@ -0,0 +1,79 @@
+/**
+ * Admin API v1
+ *
+ * A RESTful API for administrative operations on Sim.
+ *
+ * Authentication:
+ *   Set ADMIN_API_KEY environment variable and use x-admin-key header.
+ *
+ * Endpoints:
+ *   GET    /api/v1/admin/users                    - List all users
+ *   GET    /api/v1/admin/users/:id                - Get user details
+ *   GET    /api/v1/admin/workspaces               - List all workspaces
+ *   GET    /api/v1/admin/workspaces/:id           - Get workspace details
+ *   GET    /api/v1/admin/workspaces/:id/workflows - List workspace workflows
+ *   DELETE /api/v1/admin/workspaces/:id/workflows - Delete all workspace workflows
+ *   GET    /api/v1/admin/workspaces/:id/folders   - List workspace folders
+ *   GET    /api/v1/admin/workspaces/:id/export    - Export workspace (ZIP/JSON)
+ *   POST   /api/v1/admin/workspaces/:id/import    - Import into workspace
+ *   GET    /api/v1/admin/workflows                - List all workflows
+ *   GET    /api/v1/admin/workflows/:id            - Get workflow details
+ *   DELETE /api/v1/admin/workflows/:id            - Delete workflow
+ *   GET    /api/v1/admin/workflows/:id/export     - Export workflow (JSON)
+ *   POST   /api/v1/admin/workflows/import         - Import single workflow
+ */
+
+export type { AdminAuthFailure, AdminAuthResult, AdminAuthSuccess } from '@/app/api/v1/admin/auth'
+export { authenticateAdminRequest } from '@/app/api/v1/admin/auth'
+export type { AdminRouteHandler, AdminRouteHandlerWithParams } from '@/app/api/v1/admin/middleware'
+export { withAdminAuth, withAdminAuthParams } from '@/app/api/v1/admin/middleware'
+export {
+  badRequestResponse,
+  errorResponse,
+  forbiddenResponse,
+  internalErrorResponse,
+  listResponse,
+  notConfiguredResponse,
+  notFoundResponse,
+  singleResponse,
+  unauthorizedResponse,
+} from '@/app/api/v1/admin/responses'
+export type {
+  AdminErrorResponse,
+  AdminFolder,
+  AdminListResponse,
+  AdminSingleResponse,
+  AdminUser,
+  AdminWorkflow,
+  AdminWorkflowDetail,
+  AdminWorkspace,
+  AdminWorkspaceDetail,
+  DbUser,
+  DbWorkflow,
+  DbWorkflowFolder,
+  DbWorkspace,
+  FolderExportPayload,
+  ImportResult,
+  PaginationMeta,
+  PaginationParams,
+  VariableType,
+  WorkflowExportPayload,
+  WorkflowExportState,
+  WorkflowImportRequest,
+  WorkflowVariable,
+  WorkspaceExportPayload,
+  WorkspaceImportRequest,
+  WorkspaceImportResponse,
+} from '@/app/api/v1/admin/types'
+export {
+  createPaginationMeta,
+  DEFAULT_LIMIT,
+  extractWorkflowMetadata,
+  MAX_LIMIT,
+  parsePaginationParams,
+  parseWorkflowVariables,
+  toAdminFolder,
+  toAdminUser,
+  toAdminWorkflow,
+  toAdminWorkspace,
+} from '@/app/api/v1/admin/types'
diff --git a/apps/sim/app/api/v1/admin/middleware.ts b/apps/sim/app/api/v1/admin/middleware.ts
new file mode 100644
index 0000000000..9408f90597
--- /dev/null
+++ b/apps/sim/app/api/v1/admin/middleware.ts
@@ -0,0 +1,50 @@
+import type { NextRequest, NextResponse } from 'next/server'
+import { authenticateAdminRequest } from '@/app/api/v1/admin/auth'
+import { notConfiguredResponse, unauthorizedResponse } from '@/app/api/v1/admin/responses'
+
+export type AdminRouteHandler = (request: NextRequest) => Promise<NextResponse>
+
+export type AdminRouteHandlerWithParams<TParams> = (
+  request: NextRequest,
+  context: { params: Promise<TParams> }
+) => Promise<NextResponse>
+
+/**
+ * Wrap a route handler with admin authentication.
+ * Returns early with an error response if authentication fails.
+ */
+export function withAdminAuth(handler: AdminRouteHandler): AdminRouteHandler {
+  return async (request: NextRequest) => {
+    const auth = authenticateAdminRequest(request)
+
+    if (!auth.authenticated) {
+      if (auth.notConfigured) {
+        return notConfiguredResponse()
+      }
+      return unauthorizedResponse(auth.error)
+    }
+
+    return handler(request)
+  }
+}
+
+/**
+ * Wrap a route handler with params with admin authentication.
+ * Returns early with an error response if authentication fails.
+ */
+export function withAdminAuthParams<TParams>(
+  handler: AdminRouteHandlerWithParams<TParams>
+): AdminRouteHandlerWithParams<TParams> {
+  return async (request: NextRequest, context: { params: Promise<TParams> }) => {
+    const auth = authenticateAdminRequest(request)
+
+    if (!auth.authenticated) {
+      if (auth.notConfigured) {
+        return notConfiguredResponse()
+      }
+      return unauthorizedResponse(auth.error)
+    }
+
+    return handler(request, context)
+  }
+}
diff --git a/apps/sim/app/api/v1/admin/responses.ts b/apps/sim/app/api/v1/admin/responses.ts
new file mode 100644
index 0000000000..dfbfa85488
--- /dev/null
+++ b/apps/sim/app/api/v1/admin/responses.ts
@@ -0,0 +1,82 @@
+/**
+ * Admin API Response Helpers
+ *
+ * Consistent response formatting for all Admin API endpoints.
+ */
+
+import { NextResponse } from 'next/server'
+import type {
+  AdminErrorResponse,
+  AdminListResponse,
+  AdminSingleResponse,
+  PaginationMeta,
+} from '@/app/api/v1/admin/types'
+
+/**
+ * Create a successful list response with pagination
+ */
+export function listResponse<T>(
+  data: T[],
+  pagination: PaginationMeta
+): NextResponse<AdminListResponse<T>> {
+  return NextResponse.json({ data, pagination })
+}
+
+/**
+ * Create a successful single resource response
+ */
+export function singleResponse<T>(data: T): NextResponse<AdminSingleResponse<T>> {
+  return NextResponse.json({ data })
+}
+
+/**
+ * Create an error response
+ */
+export function errorResponse(
+  code: string,
+  message: string,
+  status: number,
+  details?: unknown
+): NextResponse<AdminErrorResponse> {
+  const body: AdminErrorResponse = {
+    error: { code, message },
+  }
+
+  if (details !== undefined) {
+    body.error.details = details
+  }
+
+  return NextResponse.json(body, { status })
+}
+
+// =============================================================================
+// Common Error Responses
+// =============================================================================
+
+export function unauthorizedResponse(message = 'Authentication required'): NextResponse {
+  return errorResponse('UNAUTHORIZED', message, 401)
+}
+
+export function forbiddenResponse(message = 'Access denied'): NextResponse {
+  return errorResponse('FORBIDDEN', message, 403)
+}
+
+export function notFoundResponse(resource: string): NextResponse {
+  return errorResponse('NOT_FOUND', `${resource} not found`, 404)
+}
+
+export function badRequestResponse(message: string, details?: unknown): NextResponse {
+  return errorResponse('BAD_REQUEST', message, 400, details)
+}
+
+export function internalErrorResponse(message = 'Internal server error'): NextResponse {
+  return errorResponse('INTERNAL_ERROR', message, 500)
+}
+
+export function notConfiguredResponse(): NextResponse {
+  return errorResponse(
+    'NOT_CONFIGURED',
+    'Admin API is not configured. Set ADMIN_API_KEY environment variable.',
+    503
+  )
+}
diff --git a/apps/sim/app/api/v1/admin/types.ts b/apps/sim/app/api/v1/admin/types.ts
new file mode 100644
index 0000000000..fbac0aa1c8
--- /dev/null
+++ b/apps/sim/app/api/v1/admin/types.ts
@@ -0,0 +1,402 @@
+/**
+ * Admin API Types
+ *
+ * This file defines the types for the Admin API endpoints.
+ * All responses follow a consistent structure for predictability.
+ */
+
+import type { user, workflow, workflowFolder, workspace } from '@sim/db/schema'
+import type { InferSelectModel } from 'drizzle-orm'
+import type { Edge } from 'reactflow'
+import type { BlockState, Loop, Parallel } from '@/stores/workflows/workflow/types'
+
+// =============================================================================
+// Database Model Types (inferred from schema)
+// =============================================================================
+
+export type DbUser = InferSelectModel<typeof user>
+export type DbWorkspace = InferSelectModel<typeof workspace>
+export type DbWorkflow = InferSelectModel<typeof workflow>
+export type DbWorkflowFolder = InferSelectModel<typeof workflowFolder>
+
+// =============================================================================
+// Pagination
+// =============================================================================
+
+export interface PaginationParams {
+  limit: number
+  offset: number
+}
+
+export interface PaginationMeta {
+  total: number
+  limit: number
+  offset: number
+  hasMore: boolean
+}
+
+export const DEFAULT_LIMIT = 50
+export const MAX_LIMIT = 250
+
+export function parsePaginationParams(url: URL): PaginationParams {
+  const limitParam = url.searchParams.get('limit')
+  const offsetParam = url.searchParams.get('offset')
+
+  let limit = limitParam ? Number.parseInt(limitParam, 10) : DEFAULT_LIMIT
+  let offset = offsetParam ? Number.parseInt(offsetParam, 10) : 0
+
+  if (Number.isNaN(limit) || limit < 1) limit = DEFAULT_LIMIT
+  if (limit > MAX_LIMIT) limit = MAX_LIMIT
+  if (Number.isNaN(offset) || offset < 0) offset = 0
+
+  return { limit, offset }
+}
+
+export function createPaginationMeta(total: number, limit: number, offset: number): PaginationMeta {
+  return {
+    total,
+    limit,
+    offset,
+    hasMore: offset + limit < total,
+  }
+}
+
+// =============================================================================
+// API Response Types
+// =============================================================================
+
+export interface AdminListResponse<T> {
+  data: T[]
+  pagination: PaginationMeta
+}
+
+export interface AdminSingleResponse<T> {
+  data: T
+}
+
+export interface AdminErrorResponse {
+  error: {
+    code: string
+    message: string
+    details?: unknown
+  }
+}
+
+// =============================================================================
+// User Types
+// =============================================================================
+
+export interface AdminUser {
+  id: string
+  name: string
+  email: string
+  emailVerified: boolean
+  image: string | null
+  createdAt: string
+  updatedAt: string
+}
+
+export function toAdminUser(dbUser: DbUser): AdminUser {
+  return {
+    id: dbUser.id,
+    name: dbUser.name,
+    email: dbUser.email,
+    emailVerified: dbUser.emailVerified,
+    image: dbUser.image,
+    createdAt: dbUser.createdAt.toISOString(),
+    updatedAt: dbUser.updatedAt.toISOString(),
+  }
+}
+
+// =============================================================================
+// Workspace Types
+// =============================================================================
+
+export interface AdminWorkspace {
+  id: string
+  name: string
+  ownerId: string
+  createdAt: string
+  updatedAt: string
+}
+
+export interface AdminWorkspaceDetail extends AdminWorkspace {
+  workflowCount: number
+  folderCount: number
+}
+
+export function toAdminWorkspace(dbWorkspace: DbWorkspace): AdminWorkspace {
+  return {
+    id: dbWorkspace.id,
+    name: dbWorkspace.name,
+    ownerId: dbWorkspace.ownerId,
+    createdAt: dbWorkspace.createdAt.toISOString(),
+    updatedAt: dbWorkspace.updatedAt.toISOString(),
+  }
+}
+
+// =============================================================================
+// Folder Types
+// =============================================================================
+
+export interface AdminFolder {
+  id: string
+  name: string
+  parentId: string | null
+  color: string | null
+  sortOrder: number
+  createdAt: string
+  updatedAt: string
+}
+
+export function toAdminFolder(dbFolder: DbWorkflowFolder): AdminFolder {
+  return {
+    id: dbFolder.id,
+    name: dbFolder.name,
+    parentId: dbFolder.parentId,
+    color: dbFolder.color,
+    sortOrder: dbFolder.sortOrder,
+    createdAt: dbFolder.createdAt.toISOString(),
+    updatedAt: dbFolder.updatedAt.toISOString(),
+  }
+}
+
+// =============================================================================
+// Workflow Types
+// =============================================================================
+
+export interface AdminWorkflow {
+  id: string
+  name: string
+  description: string | null
+  color: string
+  workspaceId: string | null
+  folderId: string | null
+  isDeployed: boolean
+  deployedAt: string | null
+  runCount: number
+  lastRunAt: string | null
+  createdAt: string
+  updatedAt: string
+}
+
+export interface AdminWorkflowDetail extends AdminWorkflow {
+  blockCount: number
+  edgeCount: number
+}
+
+export function toAdminWorkflow(dbWorkflow: DbWorkflow): AdminWorkflow {
+  return {
+    id: dbWorkflow.id,
+    name: dbWorkflow.name,
+    description: dbWorkflow.description,
+    color: dbWorkflow.color,
+    workspaceId: dbWorkflow.workspaceId,
+    folderId: dbWorkflow.folderId,
+    isDeployed: dbWorkflow.isDeployed,
+    deployedAt: dbWorkflow.deployedAt?.toISOString() ?? null,
+    runCount: dbWorkflow.runCount,
+    lastRunAt: dbWorkflow.lastRunAt?.toISOString() ?? null,
+    createdAt: dbWorkflow.createdAt.toISOString(),
+    updatedAt: dbWorkflow.updatedAt.toISOString(),
+  }
+}
+
+// =============================================================================
+// Workflow Variable Types
+// =============================================================================
+
+export type VariableType = 'string' | 'number' | 'boolean' | 'object' | 'array' | 'plain'
+
+export interface WorkflowVariable {
+  id: string
+  name: string
+  type: VariableType
+  value: unknown
+}
+
+// =============================================================================
+// Export/Import Types
+// =============================================================================
+
+export interface WorkflowExportState {
+  blocks: Record<string, BlockState>
+  edges: Edge[]
+  loops: Record<string, Loop>
+  parallels: Record<string, Parallel>
+  metadata?: {
+    name?: string
+    description?: string
+    color?: string
+    exportedAt?: string
+  }
+  variables?: WorkflowVariable[]
+}
+
+export interface WorkflowExportPayload {
+  version: '1.0'
+  exportedAt: string
+  workflow: {
+    id: string
+    name: string
+    description: string | null
+    color: string
+    workspaceId: string | null
+    folderId: string | null
+  }
+  state: WorkflowExportState
+}
+
+export interface FolderExportPayload {
+  id: string
+  name: string
+  parentId: string | null
+}
+
+export interface WorkspaceExportPayload {
+  version: '1.0'
+  exportedAt: string
+  workspace: {
+    id: string
+    name: string
+  }
+  workflows: Array<{
+    workflow: WorkflowExportPayload['workflow']
+    state: WorkflowExportState
+  }>
+  folders: FolderExportPayload[]
+}
+
+// =============================================================================
+// Import Types
+// =============================================================================
+
+export interface WorkflowImportRequest {
+  workspaceId: string
+  folderId?: string
+  name?: string
+  workflow: WorkflowExportPayload | WorkflowExportState | string
+}
+
+export interface WorkspaceImportRequest {
+  workflows: Array<{
+    content: string | WorkflowExportPayload | WorkflowExportState
+    name?: string
+    folderPath?: string[]
+  }>
+}
+
+export interface ImportResult {
+  workflowId: string
+  name: string
+  success: boolean
+  error?: string
+}
+
+export interface WorkspaceImportResponse {
+  imported: number
+  failed: number
+  results: ImportResult[]
+}
+
+// =============================================================================
+// Utility Functions
+// =============================================================================
+
+/**
+ * Parse workflow variables from database JSON format to array format.
+ * Handles both array and Record<string, Variable> formats.
+ */
+export function parseWorkflowVariables(
+  dbVariables: DbWorkflow['variables']
+): WorkflowVariable[] | undefined {
+  if (!dbVariables) return undefined
+
+  try {
+    const varsObj = typeof dbVariables === 'string' ? JSON.parse(dbVariables) : dbVariables
+
+    if (Array.isArray(varsObj)) {
+      return varsObj.map((v) => ({
+        id: v.id,
+        name: v.name,
+        type: v.type,
+        value: v.value,
+      }))
+    }
+
+    if (typeof varsObj === 'object' && varsObj !== null) {
+      return Object.values(varsObj).map((v: unknown) => {
+        const variable = v as { id: string; name: string; type: VariableType; value: unknown }
+        return {
+          id: variable.id,
+          name: variable.name,
+          type: variable.type,
+          value: variable.value,
+        }
+      })
+    }
+  } catch {
+    // pass
+  }
+
+  return undefined
+}
+
+/**
+ * Extract workflow metadata from various export formats.
+ * Handles both full export payload and raw state formats.
+ */
+export function extractWorkflowMetadata(
+  workflowJson: unknown,
+  overrideName?: string
+): { name: string; color: string; description: string } {
+  const defaults = {
+    name: overrideName || 'Imported Workflow',
+    color: '#3972F6',
+    description: 'Imported via Admin API',
+  }
+
+  if (!workflowJson || typeof workflowJson !== 'object') {
+    return defaults
+  }
+
+  const parsed = workflowJson as Record<string, unknown>
+
+  const name =
+    overrideName ||
+    getNestedString(parsed, 'workflow.name') ||
+    getNestedString(parsed, 'state.metadata.name') ||
+    getNestedString(parsed, 'metadata.name') ||
+    defaults.name
+
+  const color =
+    getNestedString(parsed, 'workflow.color') ||
+    getNestedString(parsed, 'state.metadata.color') ||
+    getNestedString(parsed, 'metadata.color') ||
+    defaults.color
+
+  const description =
+    getNestedString(parsed, 'workflow.description') ||
+    getNestedString(parsed, 'state.metadata.description') ||
+    getNestedString(parsed, 'metadata.description') ||
+    defaults.description
+
+  return { name, color, description }
+}
+
+/**
+ * Safely get a nested string value from an object.
+ */
+function getNestedString(obj: Record<string, unknown>, path: string): string | undefined {
+  const parts = path.split('.')
+  let current: unknown = obj
+
+  for (const part of parts) {
+    if (current === null || typeof current !== 'object') {
+      return undefined
+    }
+    current = (current as Record<string, unknown>)[part]
+  }
+
+  return typeof current === 'string' ? current : undefined
+}
diff --git a/apps/sim/app/api/v1/admin/users/[id]/route.ts b/apps/sim/app/api/v1/admin/users/[id]/route.ts
new file mode 100644
index 0000000000..e1b52c7e9b
--- /dev/null
+++ b/apps/sim/app/api/v1/admin/users/[id]/route.ts
@@ -0,0 +1,46 @@
+/**
+ * GET /api/v1/admin/users/[id]
+ *
+ * Get user details.
+ *
+ * Response: AdminSingleResponse<AdminUser>
+ */
+
+import { db } from '@sim/db'
+import { user } from '@sim/db/schema'
+import { eq } from 'drizzle-orm'
+import { createLogger } from '@/lib/logs/console/logger'
+import { withAdminAuthParams } from '@/app/api/v1/admin/middleware'
+import {
+  internalErrorResponse,
+  notFoundResponse,
+  singleResponse,
+} from '@/app/api/v1/admin/responses'
+import { toAdminUser } from '@/app/api/v1/admin/types'
+
+const logger = createLogger('AdminUserDetailAPI')
+
+interface RouteParams {
+  id: string
+}
+
+export const GET = withAdminAuthParams<RouteParams>(async (request, context) => {
+  const { id: userId } = await context.params
+
+  try {
+    const [userData] = await db.select().from(user).where(eq(user.id, userId)).limit(1)
+
+    if (!userData) {
+      return notFoundResponse('User')
+    }
+
+    const data = toAdminUser(userData)
+
+    logger.info(`Admin API: Retrieved user ${userId}`)
+
+    return singleResponse(data)
+  } catch (error) {
+    logger.error('Admin API: Failed to get user', { error, userId })
+    return internalErrorResponse('Failed to get user')
+  }
+})
diff --git a/apps/sim/app/api/v1/admin/users/route.ts b/apps/sim/app/api/v1/admin/users/route.ts
new file mode 100644
index 0000000000..698d75808c
--- /dev/null
+++ b/apps/sim/app/api/v1/admin/users/route.ts
@@ -0,0 +1,49 @@
+/**
+ * GET /api/v1/admin/users
+ *
+ * List all users with pagination.
+ *
+ * Query Parameters:
+ *   - limit: number (default: 50, max: 250)
+ *   - offset: number (default: 0)
+ *
+ * Response: AdminListResponse<AdminUser>
+ */
+
+import { db } from '@sim/db'
+import { user } from '@sim/db/schema'
+import { count } from 'drizzle-orm'
+import { createLogger } from '@/lib/logs/console/logger'
+import { withAdminAuth } from '@/app/api/v1/admin/middleware'
+import { internalErrorResponse, listResponse } from '@/app/api/v1/admin/responses'
+import {
+  type AdminUser,
+  createPaginationMeta,
+  parsePaginationParams,
+  toAdminUser,
+} from '@/app/api/v1/admin/types'
+
+const logger = createLogger('AdminUsersAPI')
+
+export const GET = withAdminAuth(async (request) => {
+  const url = new URL(request.url)
+  const { limit, offset } = parsePaginationParams(url)
+
+  try {
+    const [countResult, users] = await Promise.all([
+      db.select({ total: count() }).from(user),
+      db.select().from(user).orderBy(user.name).limit(limit).offset(offset),
+    ])
+
+    const total = countResult[0].total
+    const data: AdminUser[] = users.map(toAdminUser)
+    const pagination = createPaginationMeta(total, limit, offset)
+
+    logger.info(`Admin API: Listed ${data.length} users (total: ${total})`)
+
+    return listResponse(data, pagination)
+  } catch (error) {
+    logger.error('Admin API: Failed to list users', { error })
+    return internalErrorResponse('Failed to list users')
+  }
+})
diff --git a/apps/sim/app/api/v1/admin/workflows/[id]/export/route.ts b/apps/sim/app/api/v1/admin/workflows/[id]/export/route.ts
new file mode 100644
index 0000000000..7aa6ad503e
--- /dev/null
+++ b/apps/sim/app/api/v1/admin/workflows/[id]/export/route.ts
@@ -0,0 +1,89 @@
+/**
+ * GET /api/v1/admin/workflows/[id]/export
+ *
+ * Export a single workflow as JSON.
+ *
+ * Response: AdminSingleResponse<WorkflowExportPayload>
+ */
+
+import { db } from '@sim/db'
+import { workflow } from '@sim/db/schema'
+import { eq } from 'drizzle-orm'
+import { createLogger } from '@/lib/logs/console/logger'
+import { loadWorkflowFromNormalizedTables } from '@/lib/workflows/persistence/utils'
+import { withAdminAuthParams } from '@/app/api/v1/admin/middleware'
+import {
+  internalErrorResponse,
+  notFoundResponse,
+  singleResponse,
+} from '@/app/api/v1/admin/responses'
+import {
+  parseWorkflowVariables,
+  type WorkflowExportPayload,
+  type WorkflowExportState,
+} from '@/app/api/v1/admin/types'
+
+const logger = createLogger('AdminWorkflowExportAPI')
+
+interface RouteParams {
+  id: string
+}
+
+export const GET = withAdminAuthParams<RouteParams>(async (request, context) => {
+  const { id: workflowId } = await context.params
+
+  try {
+    const [workflowData] = await db
+      .select()
+      .from(workflow)
+      .where(eq(workflow.id, workflowId))
+      .limit(1)
+
+    if (!workflowData) {
+      return notFoundResponse('Workflow')
+    }
+
+    const normalizedData = await loadWorkflowFromNormalizedTables(workflowId)
+
+    if (!normalizedData) {
+      return notFoundResponse('Workflow state')
+    }
+
+    const variables = parseWorkflowVariables(workflowData.variables)
+
+    const state: WorkflowExportState = {
+      blocks: normalizedData.blocks,
+      edges: normalizedData.edges,
+      loops: normalizedData.loops,
+      parallels: normalizedData.parallels,
+      metadata: {
+        name: workflowData.name,
+        description: workflowData.description ?? undefined,
+        color: workflowData.color,
+        exportedAt: new Date().toISOString(),
+      },
+      variables,
+    }
+
+    const exportPayload: WorkflowExportPayload = {
+      version: '1.0',
+      exportedAt: new Date().toISOString(),
+      workflow: {
+        id: workflowData.id,
+        name: workflowData.name,
+        description: workflowData.description,
+        color: workflowData.color,
+        workspaceId: workflowData.workspaceId,
+        folderId: workflowData.folderId,
+      },
+      state,
+    }
+
+    logger.info(`Admin API: Exported workflow ${workflowId}`)
+
+    return singleResponse(exportPayload)
+  } catch (error) {
+    logger.error('Admin API: Failed to export workflow', { error, workflowId })
+    return internalErrorResponse('Failed to export workflow')
+  }
+})
diff --git a/apps/sim/app/api/v1/admin/workflows/[id]/route.ts b/apps/sim/app/api/v1/admin/workflows/[id]/route.ts
new file mode 100644
index 0000000000..8aae98af42
--- /dev/null
+++ b/apps/sim/app/api/v1/admin/workflows/[id]/route.ts
@@ -0,0 +1,105 @@
+/**
+ * GET /api/v1/admin/workflows/[id]
+ *
+ * Get workflow details including block and edge counts.
+ *
+ * Response: AdminSingleResponse<AdminWorkflowDetail>
+ *
+ * DELETE /api/v1/admin/workflows/[id]
+ *
+ * Delete a workflow and all its associated data.
+ *
+ * Response: { success: true, workflowId: string }
+ */
+
+import { db } from '@sim/db'
+import { workflow, workflowBlocks, workflowEdges, workflowSchedule } from '@sim/db/schema'
+import { count, eq } from 'drizzle-orm'
+import { NextResponse } from 'next/server'
+import { createLogger } from '@/lib/logs/console/logger'
+import { withAdminAuthParams } from '@/app/api/v1/admin/middleware'
+import {
+  internalErrorResponse,
+  notFoundResponse,
+  singleResponse,
+} from '@/app/api/v1/admin/responses'
+import { type AdminWorkflowDetail, toAdminWorkflow } from '@/app/api/v1/admin/types'
+
+const logger = createLogger('AdminWorkflowDetailAPI')
+
+interface RouteParams {
+  id: string
+}
+
+export const GET = withAdminAuthParams<RouteParams>(async (request, context) => {
+  const { id: workflowId } = await context.params
+
+  try {
+    const [workflowData] = await db
+      .select()
+      .from(workflow)
+      .where(eq(workflow.id, workflowId))
+      .limit(1)
+
+    if (!workflowData) {
+      return notFoundResponse('Workflow')
+    }
+
+    const [blockCountResult, edgeCountResult] = await Promise.all([
+      db
+        .select({ count: count() })
+        .from(workflowBlocks)
+        .where(eq(workflowBlocks.workflowId, workflowId)),
+      db
+        .select({ count: count() })
+        .from(workflowEdges)
+        .where(eq(workflowEdges.workflowId, workflowId)),
+    ])
+
+    const data: AdminWorkflowDetail = {
+      ...toAdminWorkflow(workflowData),
+      blockCount: blockCountResult[0].count,
+      edgeCount: edgeCountResult[0].count,
+    }
+
+    logger.info(`Admin API: Retrieved workflow ${workflowId}`)
+
+    return singleResponse(data)
+  } catch (error) {
+    logger.error('Admin API: Failed to get workflow', { error, workflowId })
+    return internalErrorResponse('Failed to get workflow')
+  }
+})
+
+export const DELETE = withAdminAuthParams<RouteParams>(async (request, context) => {
+  const { id: workflowId } = await context.params
+
+  try {
+    const [workflowData] = await db
+      .select({ id: workflow.id, name: workflow.name })
+      .from(workflow)
+      .where(eq(workflow.id, workflowId))
+      .limit(1)
+
+    if (!workflowData) {
+      return notFoundResponse('Workflow')
+    }
+
+    await db.transaction(async (tx) => {
+      await Promise.all([
+        tx.delete(workflowBlocks).where(eq(workflowBlocks.workflowId, workflowId)),
+        tx.delete(workflowEdges).where(eq(workflowEdges.workflowId, workflowId)),
+        tx.delete(workflowSchedule).where(eq(workflowSchedule.workflowId, workflowId)),
+      ])
+
+      await tx.delete(workflow).where(eq(workflow.id, workflowId))
+    })
+
+    logger.info(`Admin API: Deleted workflow ${workflowId} (${workflowData.name})`)
+
+    return NextResponse.json({ success: true, workflowId })
+  } catch (error) {
+    logger.error('Admin API: Failed to delete workflow', { error, workflowId })
+    return internalErrorResponse('Failed to delete workflow')
+  }
+})
diff --git a/apps/sim/app/api/v1/admin/workflows/import/route.ts b/apps/sim/app/api/v1/admin/workflows/import/route.ts
new file mode 100644
index 0000000000..9dc00e5d0e
--- /dev/null
+++ b/apps/sim/app/api/v1/admin/workflows/import/route.ts
@@ -0,0 +1,153 @@
+/**
+ * POST /api/v1/admin/workflows/import
+ *
+ * Import a single workflow into a workspace.
+ *
+ * Request Body:
+ *   {
+ *     workspaceId: string,           // Required: target workspace
+ *     folderId?: string,             // Optional: target folder
+ *     name?: string,                 // Optional: override workflow name
+ *     workflow: object | string      // The workflow JSON (from export or raw state)
+ *   }
+ *
+ * Response: { workflowId: string, name: string, success: true }
+ */
+
+import { db } from '@sim/db'
+import { workflow, workspace } from '@sim/db/schema'
+import { eq } from 'drizzle-orm'
+import { NextResponse } from 'next/server'
+import { createLogger } from '@/lib/logs/console/logger'
+import { saveWorkflowToNormalizedTables } from '@/lib/workflows/persistence/utils'
+import { withAdminAuth } from '@/app/api/v1/admin/middleware'
+import {
+  badRequestResponse,
+  internalErrorResponse,
+  notFoundResponse,
+} from '@/app/api/v1/admin/responses'
+import {
+  extractWorkflowMetadata,
+  type WorkflowImportRequest,
+  type WorkflowVariable,
+} from '@/app/api/v1/admin/types'
+import { parseWorkflowJson } from '@/stores/workflows/json/importer'
+
+const logger = createLogger('AdminWorkflowImportAPI')
+
+interface ImportSuccessResponse {
+  workflowId: string
+  name: string
+  success: true
+}
+
+export const POST = withAdminAuth(async (request) => {
+  try {
+    const body = (await request.json()) as WorkflowImportRequest
+
+    if (!body.workspaceId) {
+      return badRequestResponse('workspaceId is required')
+    }
+
+    if (!body.workflow) {
+      return badRequestResponse('workflow is required')
+    }
+
+    const { workspaceId, folderId, name: overrideName } = body
+
+    const [workspaceData] = await db
+      .select({ id: workspace.id, ownerId: workspace.ownerId })
+      .from(workspace)
+      .where(eq(workspace.id, workspaceId))
+      .limit(1)
+
+    if (!workspaceData) {
+      return notFoundResponse('Workspace')
+    }
+
+    const workflowContent =
+      typeof body.workflow === 'string' ? body.workflow : JSON.stringify(body.workflow)
+
+    const { data: workflowData, errors } = parseWorkflowJson(workflowContent)
+
+    if (!workflowData || errors.length > 0) {
+      return badRequestResponse(`Invalid workflow: ${errors.join(', ')}`)
+    }
+
+    const parsedWorkflow =
+      typeof body.workflow === 'string'
+        ? (() => {
+            try {
+              return JSON.parse(body.workflow)
+            } catch {
+              return null
+            }
+          })()
+        : body.workflow
+
+    const {
+      name: workflowName,
+      color: workflowColor,
+      description: workflowDescription,
+    } = extractWorkflowMetadata(parsedWorkflow, overrideName)
+
+    const workflowId = crypto.randomUUID()
+    const now = new Date()
+
+    await db.insert(workflow).values({
+      id: workflowId,
+      userId: workspaceData.ownerId,
+      workspaceId,
+      folderId: folderId || null,
+      name: workflowName,
+      description: workflowDescription,
+      color: workflowColor,
+      lastSynced: now,
+      createdAt: now,
+      updatedAt: now,
+      isDeployed: false,
+      runCount: 0,
+      variables: {},
+    })
+
+    const saveResult = await saveWorkflowToNormalizedTables(workflowId, workflowData)
+
+    if (!saveResult.success) {
+      await db.delete(workflow).where(eq(workflow.id, workflowId))
+      return internalErrorResponse(`Failed to save workflow state: ${saveResult.error}`)
+    }
+
+    if (workflowData.variables && Array.isArray(workflowData.variables)) {
+      const variablesRecord: Record<string, WorkflowVariable> = {}
+      workflowData.variables.forEach((v) => {
+        const varId = v.id || crypto.randomUUID()
+        variablesRecord[varId] = {
+          id: varId,
+          name: v.name,
+          type: v.type || 'string',
+          value: v.value,
+        }
+      })
+
+      await db
+        .update(workflow)
+        .set({ variables: variablesRecord, updatedAt: new Date() })
+        .where(eq(workflow.id, workflowId))
+    }
+
+    logger.info(
+      `Admin API: Imported workflow ${workflowId} (${workflowName}) into workspace ${workspaceId}`
+    )
+
+    const response: ImportSuccessResponse = {
+      workflowId,
+      name: workflowName,
+      success: true,
+    }
+
+    return NextResponse.json(response)
+  } catch (error) {
+    logger.error('Admin API: Failed to import workflow', { error })
+    return internalErrorResponse('Failed to import workflow')
+  }
+})
diff --git a/apps/sim/app/api/v1/admin/workflows/route.ts b/apps/sim/app/api/v1/admin/workflows/route.ts
new file mode 100644
index 0000000000..3c190330a2
--- /dev/null
+++ b/apps/sim/app/api/v1/admin/workflows/route.ts
@@ -0,0 +1,49 @@
+/**
+ * GET /api/v1/admin/workflows
+ *
+ * List all workflows across all workspaces with pagination.
+ *
+ * Query Parameters:
+ *   - limit: number (default: 50, max: 250)
+ *   - offset: number (default: 0)
+ *
+ * Response: AdminListResponse<AdminWorkflow>
+ */
+
+import { db } from '@sim/db'
+import { workflow } from '@sim/db/schema'
+import { count } from 'drizzle-orm'
+import { createLogger } from '@/lib/logs/console/logger'
+import { withAdminAuth } from '@/app/api/v1/admin/middleware'
+import { internalErrorResponse, listResponse } from '@/app/api/v1/admin/responses'
+import {
+  type AdminWorkflow,
+  createPaginationMeta,
+  parsePaginationParams,
+  toAdminWorkflow,
+} from '@/app/api/v1/admin/types'
+
+const logger = createLogger('AdminWorkflowsAPI')
+
+export const GET = withAdminAuth(async (request) => {
+  const url = new URL(request.url)
+  const { limit, offset } = parsePaginationParams(url)
+
+  try {
+    const [countResult, workflows] = await Promise.all([
+      db.select({ total: count() }).from(workflow),
+      db.select().from(workflow).orderBy(workflow.name).limit(limit).offset(offset),
+    ])
+
+    const total = countResult[0].total
+    const data: AdminWorkflow[] = workflows.map(toAdminWorkflow)
+    const pagination = createPaginationMeta(total, limit, offset)
+
+    logger.info(`Admin API: Listed ${data.length} workflows (total: ${total})`)
+
+    return listResponse(data, pagination)
+  } catch (error) {
+    logger.error('Admin API: Failed to list workflows', { error })
+    return internalErrorResponse('Failed to list workflows')
+  }
+})
diff --git a/apps/sim/app/api/v1/admin/workspaces/[id]/export/route.ts b/apps/sim/app/api/v1/admin/workspaces/[id]/export/route.ts
new file mode 100644
index 0000000000..a943cfa7a3
--- /dev/null
+++ b/apps/sim/app/api/v1/admin/workspaces/[id]/export/route.ts
@@ -0,0 +1,164 @@
+/**
+ * GET /api/v1/admin/workspaces/[id]/export
+ *
+ * Export an entire workspace as a ZIP file or JSON.
+ *
+ * Query Parameters:
+ *   - format: 'zip' (default) or 'json'
+ *
+ * Response:
+ *   - ZIP file download (Content-Type: application/zip)
+ *   - JSON: WorkspaceExportPayload
+ */
+
+import { db } from '@sim/db'
+import { workflow, workflowFolder, workspace } from '@sim/db/schema'
+import { eq } from 'drizzle-orm'
+import { NextResponse } from 'next/server'
+import { createLogger } from '@/lib/logs/console/logger'
+import { exportWorkspaceToZip } from '@/lib/workflows/operations/import-export'
+import { loadWorkflowFromNormalizedTables } from '@/lib/workflows/persistence/utils'
+import { withAdminAuthParams } from '@/app/api/v1/admin/middleware'
+import {
+  internalErrorResponse,
+  notFoundResponse,
+  singleResponse,
+} from '@/app/api/v1/admin/responses'
+import {
+  type FolderExportPayload,
+  parseWorkflowVariables,
+  type WorkflowExportState,
+  type WorkspaceExportPayload,
+} from '@/app/api/v1/admin/types'
+
+const logger = createLogger('AdminWorkspaceExportAPI')
+
+interface RouteParams {
+  id: string
+}
+
+export const GET = withAdminAuthParams<RouteParams>(async (request, context) => {
+  const { id: workspaceId } = await context.params
+  const url = new URL(request.url)
+  const format = url.searchParams.get('format') || 'zip'
+
+  try {
+    const [workspaceData] = await db
+      .select({ id: workspace.id, name: workspace.name })
+      .from(workspace)
+      .where(eq(workspace.id, workspaceId))
+      .limit(1)
+
+    if (!workspaceData) {
+      return notFoundResponse('Workspace')
+    }
+
+    const workflows = await db.select().from(workflow).where(eq(workflow.workspaceId, workspaceId))
+
+    const folders = await db
+      .select()
+      .from(workflowFolder)
+      .where(eq(workflowFolder.workspaceId, workspaceId))
+
+    const workflowExports: Array<{
+      workflow: WorkspaceExportPayload['workflows'][number]['workflow']
+      state: WorkflowExportState
+    }> = []
+
+    for (const wf of workflows) {
+      try {
+        const normalizedData = await loadWorkflowFromNormalizedTables(wf.id)
+
+        if (!normalizedData) {
+          logger.warn(`Skipping workflow ${wf.id} - no normalized data found`)
+          continue
+        }
+
+        const variables = parseWorkflowVariables(wf.variables)
+
+        const state: WorkflowExportState = {
+          blocks: normalizedData.blocks,
+          edges: normalizedData.edges,
+          loops: normalizedData.loops,
+          parallels: normalizedData.parallels,
+          metadata: {
+            name: wf.name,
+            description: wf.description ?? undefined,
+            color: wf.color,
+            exportedAt: new Date().toISOString(),
+          },
+          variables,
+        }
+
+        workflowExports.push({
+          workflow: {
+            id: wf.id,
+            name: wf.name,
+            description: wf.description,
+            color: wf.color,
+            workspaceId: wf.workspaceId,
+            folderId: wf.folderId,
+          },
+          state,
+        })
+      } catch (error) {
+        logger.error(`Failed to load workflow ${wf.id}:`, { error })
+      }
+    }
+
+    const folderExports: FolderExportPayload[] = folders.map((f) => ({
+      id: f.id,
+      name: f.name,
+      parentId: f.parentId,
+    }))
+
+    logger.info(
+      `Admin API: Exporting workspace ${workspaceId} with ${workflowExports.length} workflows and ${folderExports.length} folders`
+    )
+
+    if (format === 'json') {
+      const exportPayload: WorkspaceExportPayload = {
+        version: '1.0',
+        exportedAt: new Date().toISOString(),
+        workspace: {
+          id: workspaceData.id,
+          name: workspaceData.name,
+        },
+        workflows: workflowExports,
+        folders: folderExports,
+      }
+
+      return singleResponse(exportPayload)
+    }
+
+    const zipWorkflows = workflowExports.map((wf) => ({
+      workflow: {
+        id: wf.workflow.id,
+        name: wf.workflow.name,
+        description: wf.workflow.description ?? undefined,
+        color: wf.workflow.color ?? undefined,
+        folderId: wf.workflow.folderId,
+      },
+      state: wf.state,
+      variables: wf.state.variables,
+    }))
+
+    const zipBlob = await exportWorkspaceToZip(workspaceData.name, zipWorkflows, folderExports)
+    const arrayBuffer = await zipBlob.arrayBuffer()
+
+    const sanitizedName = workspaceData.name.replace(/[^a-z0-9-_]/gi, '-')
+    const filename = `${sanitizedName}-${new Date().toISOString().split('T')[0]}.zip`
+
+    return new NextResponse(arrayBuffer, {
+      status: 200,
+      headers: {
+        'Content-Type': 'application/zip',
+        'Content-Disposition': `attachment; filename="${filename}"`,
+        'Content-Length': arrayBuffer.byteLength.toString(),
+      },
+    })
+  } catch (error) {
+    logger.error('Admin API: Failed to export workspace', { error, workspaceId })
+    return internalErrorResponse('Failed to export workspace')
+  }
+})
diff --git a/apps/sim/app/api/v1/admin/workspaces/[id]/folders/route.ts b/apps/sim/app/api/v1/admin/workspaces/[id]/folders/route.ts
new file mode 100644
index 0000000000..a484643d1a
--- /dev/null
+++ b/apps/sim/app/api/v1/admin/workspaces/[id]/folders/route.ts
@@ -0,0 +1,75 @@
+/**
+ * GET /api/v1/admin/workspaces/[id]/folders
+ *
+ * List all folders in a workspace with pagination.
+ *
+ * Query Parameters:
+ *   - limit: number (default: 50, max: 250)
+ *   - offset: number (default: 0)
+ *
+ * Response: AdminListResponse<AdminFolder>
+ */
+
+import { db } from '@sim/db'
+import { workflowFolder, workspace } from '@sim/db/schema'
+import { count, eq } from 'drizzle-orm'
+import { createLogger } from '@/lib/logs/console/logger'
+import { withAdminAuthParams } from '@/app/api/v1/admin/middleware'
+import { internalErrorResponse, listResponse, notFoundResponse } from '@/app/api/v1/admin/responses'
+import {
+  type AdminFolder,
+  createPaginationMeta,
+  parsePaginationParams,
+  toAdminFolder,
+} from '@/app/api/v1/admin/types'
+
+const logger = createLogger('AdminWorkspaceFoldersAPI')
+
+interface RouteParams {
+  id: string
+}
+
+export const GET = withAdminAuthParams<RouteParams>(async (request, context) => {
+  const { id: workspaceId } = await context.params
+  const url = new URL(request.url)
+  const { limit, offset } = parsePaginationParams(url)
+
+  try {
+    const [workspaceData] = await db
+      .select({ id: workspace.id })
+      .from(workspace)
+      .where(eq(workspace.id, workspaceId))
+      .limit(1)
+
+    if (!workspaceData) {
+      return notFoundResponse('Workspace')
+    }
+
+    const [countResult, folders] = await Promise.all([
+      db
+        .select({ total: count() })
+        .from(workflowFolder)
+        .where(eq(workflowFolder.workspaceId, workspaceId)),
+      db
+        .select()
+        .from(workflowFolder)
+        .where(eq(workflowFolder.workspaceId, workspaceId))
+        .orderBy(workflowFolder.sortOrder, workflowFolder.name)
+        .limit(limit)
+        .offset(offset),
+    ])
+
+    const total = countResult[0].total
+    const data: AdminFolder[] = folders.map(toAdminFolder)
+    const pagination = createPaginationMeta(total, limit, offset)
+
+    logger.info(
+      `Admin API: Listed ${data.length} folders in workspace ${workspaceId} (total: ${total})`
+    )
+
+    return listResponse(data, pagination)
+  } catch (error) {
+    logger.error('Admin API: Failed to list workspace folders', { error, workspaceId })
+    return internalErrorResponse('Failed to list folders')
+  }
+})
diff --git a/apps/sim/app/api/v1/admin/workspaces/[id]/import/route.ts b/apps/sim/app/api/v1/admin/workspaces/[id]/import/route.ts
new file mode 100644
index 0000000000..11989448ec
--- /dev/null
+++ b/apps/sim/app/api/v1/admin/workspaces/[id]/import/route.ts
@@ -0,0 +1,301 @@
+/**
+ * POST /api/v1/admin/workspaces/[id]/import
+ *
+ * Import workflows into a workspace from a ZIP file or JSON.
+ *
+ * Content-Type:
+ *   - application/zip or multipart/form-data (with 'file' field) for ZIP upload
+ *   - application/json for JSON payload
+ *
+ * JSON Body:
+ *   {
+ *     workflows: Array<{
+ *       content: string | object,  // Workflow JSON
+ *       name?: string,             // Override name
+ *       folderPath?: string[]      // Folder path to create
+ *     }>
+ *   }
+ *
+ * Query Parameters:
+ *   - createFolders: 'true' (default) or 'false'
+ *   - rootFolderName: optional name for root import folder
+ *
+ * Response: WorkspaceImportResponse
+ */
+
+import { db } from '@sim/db'
+import { workflow, workflowFolder, workspace } from '@sim/db/schema'
+import { eq } from 'drizzle-orm'
+import { NextResponse } from 'next/server'
+import { createLogger } from '@/lib/logs/console/logger'
+import {
+  extractWorkflowName,
+  extractWorkflowsFromZip,
+} from '@/lib/workflows/operations/import-export'
+import { saveWorkflowToNormalizedTables } from '@/lib/workflows/persistence/utils'
+import { withAdminAuthParams } from '@/app/api/v1/admin/middleware'
+import {
+  badRequestResponse,
+  internalErrorResponse,
+  notFoundResponse,
+} from '@/app/api/v1/admin/responses'
+import {
+  extractWorkflowMetadata,
+  type ImportResult,
+  type WorkflowVariable,
+  type WorkspaceImportRequest,
+  type WorkspaceImportResponse,
+} from '@/app/api/v1/admin/types'
+import { parseWorkflowJson } from '@/stores/workflows/json/importer'
+
+const logger = createLogger('AdminWorkspaceImportAPI')
+
+interface RouteParams {
+  id: string
+}
+
+interface ParsedWorkflow {
+  content: string
+  name: string
+  folderPath: string[]
+}
+
+export const POST = withAdminAuthParams<RouteParams>(async (request, context) => {
+  const { id: workspaceId } = await context.params
+  const url = new URL(request.url)
+  const createFolders = url.searchParams.get('createFolders') !== 'false'
+  const rootFolderName = url.searchParams.get('rootFolderName')
+
+  try {
+    const [workspaceData] = await db
+      .select({ id: workspace.id, ownerId: workspace.ownerId })
+      .from(workspace)
+      .where(eq(workspace.id, workspaceId))
+      .limit(1)
+
+    if (!workspaceData) {
+      return notFoundResponse('Workspace')
+    }
+
+    const contentType = request.headers.get('content-type') || ''
+    let workflowsToImport: ParsedWorkflow[] = []
+
+    if (contentType.includes('application/json')) {
+      const body = (await request.json()) as WorkspaceImportRequest
+
+      if (!body.workflows || !Array.isArray(body.workflows)) {
+        return badRequestResponse('Invalid JSON body. Expected { workflows: [...] }')
+      }
+
+      workflowsToImport = body.workflows.map((w) => ({
+        content: typeof w.content === 'string' ? w.content : JSON.stringify(w.content),
+        name: w.name || 'Imported Workflow',
+        folderPath: w.folderPath || [],
+      }))
+    } else if (
+      contentType.includes('application/zip') ||
+      contentType.includes('multipart/form-data')
+    ) {
+      let zipBuffer: ArrayBuffer
+
+      if (contentType.includes('multipart/form-data')) {
+        const formData = await request.formData()
+        const file = formData.get('file') as File | null
+
+        if (!file) {
+          return badRequestResponse('No file provided in form data. Use field name "file".')
+        }
+
+        zipBuffer = await file.arrayBuffer()
+      } else {
+        zipBuffer = await request.arrayBuffer()
+      }
+
+      const blob = new Blob([zipBuffer], { type: 'application/zip' })
+      const file = new File([blob], 'import.zip', { type: 'application/zip' })
+
+      const { workflows } = await extractWorkflowsFromZip(file)
+      workflowsToImport = workflows
+    } else {
+      return badRequestResponse(
+        'Unsupported Content-Type. Use application/json or application/zip.'
+      )
+    }
+
+    if (workflowsToImport.length === 0) {
+      return badRequestResponse('No workflows found to import')
+    }
+
+    let rootFolderId: string | undefined
+    if (rootFolderName && createFolders) {
+      rootFolderId = crypto.randomUUID()
+      await db.insert(workflowFolder).values({
+        id: rootFolderId,
+        name: rootFolderName,
+        userId: workspaceData.ownerId,
+        workspaceId,
+        parentId: null,
+        createdAt: new Date(),
+        updatedAt: new Date(),
+      })
+    }
+
+    const folderMap = new Map<string, string>()
+    const results: ImportResult[] = []
+
+    for (const wf of workflowsToImport) {
+      const result = await importSingleWorkflow(
+        wf,
+        workspaceId,
+        workspaceData.ownerId,
+        createFolders,
+        rootFolderId,
+        folderMap
+      )
+      results.push(result)
+
+      if (result.success) {
+        logger.info(`Admin API: Imported workflow ${result.workflowId} (${result.name})`)
+      } else {
+        logger.warn(`Admin API: Failed to import workflow ${result.name}: ${result.error}`)
+      }
+    }
+
+    const imported = results.filter((r) => r.success).length
+    const failed = results.filter((r) => !r.success).length
+
+    logger.info(`Admin API: Import complete - ${imported} succeeded, ${failed} failed`)
+
+    const response: WorkspaceImportResponse = { imported, failed, results }
+    return NextResponse.json(response)
+  } catch (error) {
+    logger.error('Admin API: Failed to import into workspace', { error, workspaceId })
+    return internalErrorResponse('Failed to import workflows')
+  }
+})
+
+async function importSingleWorkflow(
+  wf: ParsedWorkflow,
+  workspaceId: string,
+  ownerId: string,
+  createFolders: boolean,
+  rootFolderId: string | undefined,
+  folderMap: Map<string, string>
+): Promise<ImportResult> {
+  try {
+    const { data: workflowData, errors } = parseWorkflowJson(wf.content)
+
+    if (!workflowData || errors.length > 0) {
+      return {
+        workflowId: '',
+        name: wf.name,
+        success: false,
+        error: `Parse error: ${errors.join(', ')}`,
+      }
+    }
+
+    const workflowName = extractWorkflowName(wf.content, wf.name)
+    let targetFolderId: string | null = rootFolderId || null
+
+    if (createFolders && wf.folderPath.length > 0) {
+      let parentId = rootFolderId || null
+
+      for (let i = 0; i < wf.folderPath.length; i++) {
+        const pathSegment = wf.folderPath.slice(0, i + 1).join('/')
+        const fullPath = rootFolderId ? `root/${pathSegment}` : pathSegment
+
+        if (!folderMap.has(fullPath)) {
+          const folderId = crypto.randomUUID()
+          await db.insert(workflowFolder).values({
+            id: folderId,
+            name: wf.folderPath[i],
+            userId: ownerId,
+            workspaceId,
+            parentId,
+            createdAt: new Date(),
+            updatedAt: new Date(),
+          })
+          folderMap.set(fullPath, folderId)
+          parentId = folderId
+        } else {
+          parentId = folderMap.get(fullPath)!
+        }
+      }
+
+      const fullFolderPath = rootFolderId
+        ? `root/${wf.folderPath.join('/')}`
+        : wf.folderPath.join('/')
+      targetFolderId = folderMap.get(fullFolderPath) || parentId
+    }
+
+    const parsedContent = (() => {
+      try {
+        return JSON.parse(wf.content)
+      } catch {
+        return null
+      }
+    })()
+    const { color: workflowColor } = extractWorkflowMetadata(parsedContent)
+    const workflowId = crypto.randomUUID()
+    const now = new Date()
+
+    await db.insert(workflow).values({
+      id: workflowId,
+      userId: ownerId,
+      workspaceId,
+      folderId: targetFolderId,
+      name: workflowName,
+      description: workflowData.metadata?.description || 'Imported via Admin API',
+      color: workflowColor,
+      lastSynced: now,
+      createdAt: now,
+      updatedAt: now,
+      isDeployed: false,
+      runCount: 0,
+      variables: {},
+    })
+
+    const saveResult = await saveWorkflowToNormalizedTables(workflowId, workflowData)
+
+    if (!saveResult.success) {
+      await db.delete(workflow).where(eq(workflow.id, workflowId))
+      return {
+        workflowId: '',
+        name: workflowName,
+        success: false,
+        error: `Failed to save state: ${saveResult.error}`,
+      }
+    }
+
+    if (workflowData.variables && Array.isArray(workflowData.variables)) {
+      const variablesRecord: Record<string, WorkflowVariable> = {}
+      workflowData.variables.forEach((v) => {
+        const varId = v.id || crypto.randomUUID()
+        variablesRecord[varId] = {
+          id: varId,
+          name: v.name,
+          type: v.type || 'string',
+          value: v.value,
+        }
+      })
+
+      await db
+        .update(workflow)
+        .set({ variables: variablesRecord, updatedAt: new Date() })
+        .where(eq(workflow.id, workflowId))
+    }
+
+    return {
+      workflowId,
+      name: workflowName,
+      success: true,
+    }
+  } catch (error) {
+    return {
+      workflowId: '',
+      name: wf.name,
+      success: false,
+      error: error instanceof Error ? error.message : 'Unknown error',
+    }
+  }
+}
diff --git a/apps/sim/app/api/v1/admin/workspaces/[id]/route.ts b/apps/sim/app/api/v1/admin/workspaces/[id]/route.ts
new file mode 100644
index 0000000000..c9dd07a237
--- /dev/null
+++ b/apps/sim/app/api/v1/admin/workspaces/[id]/route.ts
@@ -0,0 +1,62 @@
+/**
+ * GET /api/v1/admin/workspaces/[id]
+ *
+ * Get workspace details including workflow and folder counts.
+ *
+ * Response: AdminSingleResponse<AdminWorkspaceDetail>
+ */
+
+import { db } from '@sim/db'
+import { workflow, workflowFolder, workspace } from '@sim/db/schema'
+import { count, eq } from 'drizzle-orm'
+import { createLogger } from '@/lib/logs/console/logger'
+import { withAdminAuthParams } from '@/app/api/v1/admin/middleware'
+import {
+  internalErrorResponse,
+  notFoundResponse,
+  singleResponse,
+} from '@/app/api/v1/admin/responses'
+import { type AdminWorkspaceDetail, toAdminWorkspace } from '@/app/api/v1/admin/types'
+
+const logger = createLogger('AdminWorkspaceDetailAPI')
+
+interface RouteParams {
+  id: string
+}
+
+export const GET = withAdminAuthParams<RouteParams>(async (request, context) => {
+  const { id: workspaceId } = await context.params
+
+  try {
+    const [workspaceData] = await db
+      .select()
+      .from(workspace)
+      .where(eq(workspace.id, workspaceId))
+      .limit(1)
+
+    if (!workspaceData) {
+      return notFoundResponse('Workspace')
+    }
+
+    const [workflowCountResult, folderCountResult] = await Promise.all([
+      db.select({ count: count() }).from(workflow).where(eq(workflow.workspaceId, workspaceId)),
+      db
+        .select({ count: count() })
+        .from(workflowFolder)
+        .where(eq(workflowFolder.workspaceId, workspaceId)),
+    ])
+
+    const data: AdminWorkspaceDetail = {
+      ...toAdminWorkspace(workspaceData),
+      workflowCount: workflowCountResult[0].count,
+      folderCount: folderCountResult[0].count,
+    }
+
+    logger.info(`Admin API: Retrieved workspace ${workspaceId}`)
+
+    return singleResponse(data)
+  } catch (error) {
+    logger.error('Admin API: Failed to get workspace', { error, workspaceId })
+    return internalErrorResponse('Failed to get workspace')
+  }
+})
diff --git a/apps/sim/app/api/v1/admin/workspaces/[id]/workflows/route.ts b/apps/sim/app/api/v1/admin/workspaces/[id]/workflows/route.ts
new file mode 100644
index 0000000000..867f5f2a7b
--- /dev/null
+++ b/apps/sim/app/api/v1/admin/workspaces/[id]/workflows/route.ts
@@ -0,0 +1,129 @@
+/**
+ * GET /api/v1/admin/workspaces/[id]/workflows
+ *
+ * List all workflows in a workspace with pagination.
+ *
+ * Query Parameters:
+ *   - limit: number (default: 50, max: 250)
+ *   - offset: number (default: 0)
+ *
+ * Response: AdminListResponse<AdminWorkflow>
+ *
+ * DELETE /api/v1/admin/workspaces/[id]/workflows
+ *
+ * Delete all workflows in a workspace (clean slate for reimport).
+ *
+ * Response: { success: true, deleted: number }
+ */
+
+import { db } from '@sim/db'
+import {
+  workflow,
+  workflowBlocks,
+  workflowEdges,
+  workflowSchedule,
+  workspace,
+} from '@sim/db/schema'
+import { count, eq, inArray } from 'drizzle-orm'
+import { NextResponse } from 'next/server'
+import { createLogger } from '@/lib/logs/console/logger'
+import { withAdminAuthParams } from '@/app/api/v1/admin/middleware'
+import { internalErrorResponse, listResponse, notFoundResponse } from '@/app/api/v1/admin/responses'
+import {
+  type AdminWorkflow,
+  createPaginationMeta,
+  parsePaginationParams,
+  toAdminWorkflow,
+} from '@/app/api/v1/admin/types'
+
+const logger = createLogger('AdminWorkspaceWorkflowsAPI')
+
+interface RouteParams {
+  id: string
+}
+
+export const GET = withAdminAuthParams<RouteParams>(async (request, context) => {
+  const { id: workspaceId } = await context.params
+  const url = new URL(request.url)
+  const { limit, offset } = parsePaginationParams(url)
+
+  try {
+    const [workspaceData] = await db
+      .select({ id: workspace.id })
+      .from(workspace)
+      .where(eq(workspace.id, workspaceId))
+      .limit(1)
+
+    if (!workspaceData) {
+      return notFoundResponse('Workspace')
+    }
+
+    const [countResult, workflows] = await Promise.all([
+      db.select({ total: count() }).from(workflow).where(eq(workflow.workspaceId, workspaceId)),
+      db
+        .select()
+        .from(workflow)
+        .where(eq(workflow.workspaceId, workspaceId))
+        .orderBy(workflow.name)
+        .limit(limit)
+        .offset(offset),
+    ])
+
+    const total = countResult[0].total
+    const data: AdminWorkflow[] = workflows.map(toAdminWorkflow)
+    const pagination = createPaginationMeta(total, limit, offset)
+
+    logger.info(
+      `Admin API: Listed ${data.length} workflows in workspace ${workspaceId} (total: ${total})`
+    )
+
+    return listResponse(data, pagination)
+  } catch (error) {
+    logger.error('Admin API: Failed to list workspace workflows', { error, workspaceId })
+    return internalErrorResponse('Failed to list workflows')
+  }
+})
+
+export const DELETE = withAdminAuthParams<RouteParams>(async (request, context) => {
+  const { id: workspaceId } = await context.params
+
+  try {
+    const [workspaceData] = await db
+      .select({ id: workspace.id })
+      .from(workspace)
+      .where(eq(workspace.id, workspaceId))
+      .limit(1)
+
+    if (!workspaceData) {
+      return notFoundResponse('Workspace')
+    }
+
+    const workflowsToDelete = await db
+      .select({ id: workflow.id })
+      .from(workflow)
+      .where(eq(workflow.workspaceId, workspaceId))
+
+    if (workflowsToDelete.length === 0) {
+      return NextResponse.json({ success: true, deleted: 0 })
+    }
+
+    const workflowIds = workflowsToDelete.map((w) => w.id)
+
+    await db.transaction(async (tx) => {
+      await Promise.all([
+        tx.delete(workflowBlocks).where(inArray(workflowBlocks.workflowId, workflowIds)),
+        tx.delete(workflowEdges).where(inArray(workflowEdges.workflowId, workflowIds)),
+        tx.delete(workflowSchedule).where(inArray(workflowSchedule.workflowId, workflowIds)),
+      ])
+
+      await tx.delete(workflow).where(eq(workflow.workspaceId, workspaceId))
+    })
+
+    logger.info(`Admin API: Deleted ${workflowIds.length} workflows from workspace ${workspaceId}`)
+
+    return NextResponse.json({ success: true, deleted: workflowIds.length })
+  } catch (error) {
+    logger.error('Admin API: Failed to delete workspace workflows', { error, workspaceId })
+    return internalErrorResponse('Failed to delete workflows')
+  }
+})
diff --git a/apps/sim/app/api/v1/admin/workspaces/route.ts b/apps/sim/app/api/v1/admin/workspaces/route.ts
new file mode 100644
index 0000000000..1f3fe3e197
--- /dev/null
+++ b/apps/sim/app/api/v1/admin/workspaces/route.ts
@@ -0,0 +1,49 @@
+/**
+ * GET /api/v1/admin/workspaces
+ *
+ * List all workspaces with pagination.
+ *
+ * Query Parameters:
+ *   - limit: number (default: 50, max: 250)
+ *   - offset: number (default: 0)
+ *
+ * Response: AdminListResponse<AdminWorkspace>
+ */
+
+import { db } from '@sim/db'
+import { workspace } from '@sim/db/schema'
+import { count } from 'drizzle-orm'
+import { createLogger } from '@/lib/logs/console/logger'
+import { withAdminAuth } from '@/app/api/v1/admin/middleware'
+import { internalErrorResponse, listResponse } from '@/app/api/v1/admin/responses'
+import {
+  type AdminWorkspace,
+  createPaginationMeta,
+  parsePaginationParams,
+  toAdminWorkspace,
+} from '@/app/api/v1/admin/types'
+
+const logger = createLogger('AdminWorkspacesAPI')
+
+export const GET = withAdminAuth(async (request) => {
+  const url = new URL(request.url)
+  const { limit, offset } = parsePaginationParams(url)
+
+  try {
+    const [countResult, workspaces] = await Promise.all([
+      db.select({ total: count() }).from(workspace),
+      db.select().from(workspace).orderBy(workspace.name).limit(limit).offset(offset),
+    ])
+
+    const total = countResult[0].total
+    const data: AdminWorkspace[] = workspaces.map(toAdminWorkspace)
+    const pagination = createPaginationMeta(total, limit, offset)
+
+    logger.info(`Admin API: Listed ${data.length} workspaces (total: ${total})`)
+
+    return listResponse(data, pagination)
+  } catch (error) {
+    logger.error('Admin API: Failed to list workspaces', { error })
+    return internalErrorResponse('Failed to list workspaces')
+  }
+})
diff --git a/apps/sim/lib/core/config/env.ts b/apps/sim/lib/core/config/env.ts
index dd94c92d61..ac5ec6ffe0 100644
--- a/apps/sim/lib/core/config/env.ts
+++ b/apps/sim/lib/core/config/env.ts
@@ -108,6 +108,9 @@ export const env = createEnv({
     BROWSERBASE_PROJECT_ID:                z.string().min(1).optional(),           // Browserbase project ID
     GITHUB_TOKEN:                          z.string().optional(),                  // GitHub personal access token for API access
 
+    // Admin API
+    ADMIN_API_KEY:                         z.string().min(32).optional(),          // Admin API key for self-hosted GitOps access (generate with: openssl rand -hex 32)
+
     // Infrastructure & Deployment
     NEXT_RUNTIME:                          z.string().optional(),                  // Next.js runtime environment
     DOCKER_BUILD:                          z.boolean().optional(),                 // Flag indicating Docker build environment