diff --git a/frontends/nextjs/src/app/api/v1/[...slug]/route.ts b/frontends/nextjs/src/app/api/v1/[...slug]/route.ts
index 0149248fd..e7a66e836 100644
--- a/frontends/nextjs/src/app/api/v1/[...slug]/route.ts
+++ b/frontends/nextjs/src/app/api/v1/[...slug]/route.ts
@@ -57,7 +57,7 @@ async function handleRequest(
   const { user } = await getSessionUser()
   
   // 3. Validate package exists and user has required level
-  const packageResult = validatePackageRoute(route.package, route.entity, user)
+  const packageResult = await validatePackageRoute(route.package, route.entity, user)
   if (!packageResult.allowed) {
     const status = !user ? STATUS.UNAUTHORIZED : STATUS.FORBIDDEN
     return errorResponse(packageResult.reason || 'Access denied', status)
diff --git a/frontends/nextjs/src/lib/routing/auth/validate-package-route.ts b/frontends/nextjs/src/lib/routing/auth/validate-package-route.ts
index e1e6ec4b3..494f66718 100644
--- a/frontends/nextjs/src/lib/routing/auth/validate-package-route.ts
+++ b/frontends/nextjs/src/lib/routing/auth/validate-package-route.ts
@@ -3,17 +3,22 @@
  */
 
 export interface RouteValidationResult {
-  valid: boolean
+  allowed: boolean
   error?: string
+  reason?: string
+  package?: {
+    name?: string
+    minLevel?: number
+  }
 }
 
 export async function validatePackageRoute(
-  _b_tenant: string,
-  _b_packageId: string,
-  _userId?: string
+  _b_package: string,
+  _b_entity: string,
+  _userId?: unknown
 ): Promise<RouteValidationResult> {
   // TODO: Implement route validation
-  return { valid: true }
+  return { allowed: true }
 }
 
 export async function canBePrimaryPackage(_b_packageId: string): Promise<boolean> {
diff --git a/frontends/nextjs/src/lib/routing/index.ts b/frontends/nextjs/src/lib/routing/index.ts
index 6e718c1d8..9e0940c51 100644
--- a/frontends/nextjs/src/lib/routing/index.ts
+++ b/frontends/nextjs/src/lib/routing/index.ts
@@ -20,39 +20,84 @@ export const STATUS = {
   FORBIDDEN: 403,
   NOT_FOUND: 404,
   ERROR: 500,
+  INTERNAL_ERROR: 500,
 }
 
 export function successResponse(data: unknown, status = STATUS.OK) {
-  return Response.json(data, { status })
+  return new Response(JSON.stringify(data), {
+    status,
+    headers: { 'Content-Type': 'application/json' },
+  })
 }
 
 export function errorResponse(message: string, status = STATUS.ERROR) {
-  return Response.json({ error: message }, { status })
+  return new Response(JSON.stringify({ error: message }), {
+    status,
+    headers: { 'Content-Type': 'application/json' },
+  })
 }
 
-export async function getSessionUser(_req: Request): Promise<unknown> {
+export interface SessionUser {
+  user: unknown | null
+}
+
+export async function getSessionUser(_req?: Request): Promise<SessionUser> {
   // TODO: Implement session user retrieval
-  return null
+  return { user: null }
 }
 
-export async function parseRestfulRequest(_req: Request): Promise<unknown> {
+export interface RestfulContext {
+  route: {
+    tenant: string
+    package: string
+    entity: string
+    id?: string
+    action?: string
+  }
+  operation: string
+  dbalOp: unknown
+}
+
+export async function parseRestfulRequest(
+  _req: Request,
+  _params: { slug: string[] }
+): Promise<RestfulContext | { error: string; status: number }> {
   // TODO: Implement RESTful request parsing
-  return {}
+  return { error: 'Not implemented', status: 500 }
 }
 
-export async function executeDbalOperation(_op: unknown): Promise<unknown> {
+export async function executeDbalOperation(
+  _op: unknown,
+  _context?: unknown
+): Promise<{ success: boolean; data?: unknown; error?: string; meta?: unknown }> {
   // TODO: Implement DBAL operation execution
-  throw new Error('Not implemented')
+  return { success: false, error: 'Not implemented' }
 }
 
-export async function executePackageAction(_action: unknown): Promise<unknown> {
+export async function executePackageAction(
+  _packageId: unknown,
+  _entity: unknown,
+  _action: unknown,
+  _id: unknown,
+  _context?: unknown
+): Promise<{ success: boolean; data?: unknown; error?: string }> {
   // TODO: Implement package action execution
-  throw new Error('Not implemented')
+  return { success: false, error: 'Not implemented' }
 }
 
-export function validateTenantAccess(_tenant: unknown, _user: unknown): boolean {
+export interface TenantValidationResult {
+  allowed: boolean
+  reason?: string
+  tenant?: unknown
+}
+
+export async function validateTenantAccess(
+  _user: unknown,
+  _tenant: unknown,
+  _minLevel: unknown
+): Promise<TenantValidationResult> {
   // TODO: Implement tenant access validation
-  return false
+  return { allowed: false, reason: 'Not implemented' }
 }
 
 // Re-export auth functions