diff --git a/src/integrations/supabase/types.ts b/src/integrations/supabase/types.ts
index df26e4ec..a44d0ca5 100644
--- a/src/integrations/supabase/types.ts
+++ b/src/integrations/supabase/types.ts
@@ -63,6 +63,7 @@ export type Database = {
         Row: {
           action: string
           admin_user_id: string
+          auth0_event_type: string | null
           created_at: string
           details: Json | null
           id: string
@@ -71,6 +72,7 @@ export type Database = {
         Insert: {
           action: string
           admin_user_id: string
+          auth0_event_type?: string | null
           created_at?: string
           details?: Json | null
           id?: string
@@ -79,6 +81,7 @@ export type Database = {
         Update: {
           action?: string
           admin_user_id?: string
+          auth0_event_type?: string | null
           created_at?: string
           details?: Json | null
           id?: string
@@ -119,6 +122,57 @@ export type Database = {
         }
         Relationships: []
       }
+      auth0_sync_log: {
+        Row: {
+          auth0_sub: string
+          completed_at: string | null
+          created_at: string
+          error_message: string | null
+          id: string
+          metadata: Json | null
+          sync_status: string
+          sync_type: string
+          user_id: string | null
+        }
+        Insert: {
+          auth0_sub: string
+          completed_at?: string | null
+          created_at?: string
+          error_message?: string | null
+          id?: string
+          metadata?: Json | null
+          sync_status?: string
+          sync_type: string
+          user_id?: string | null
+        }
+        Update: {
+          auth0_sub?: string
+          completed_at?: string | null
+          created_at?: string
+          error_message?: string | null
+          id?: string
+          metadata?: Json | null
+          sync_status?: string
+          sync_type?: string
+          user_id?: string | null
+        }
+        Relationships: [
+          {
+            foreignKeyName: "auth0_sync_log_user_id_fkey"
+            columns: ["user_id"]
+            isOneToOne: false
+            referencedRelation: "filtered_profiles"
+            referencedColumns: ["user_id"]
+          },
+          {
+            foreignKeyName: "auth0_sync_log_user_id_fkey"
+            columns: ["user_id"]
+            isOneToOne: false
+            referencedRelation: "profiles"
+            referencedColumns: ["user_id"]
+          },
+        ]
+      }
       blog_posts: {
         Row: {
           author_id: string
@@ -1968,6 +2022,7 @@ export type Database = {
       }
       profiles: {
         Row: {
+          auth0_sub: string | null
           avatar_image_id: string | null
           avatar_url: string | null
           ban_expires_at: string | null
@@ -2001,6 +2056,7 @@ export type Database = {
           username: string
         }
         Insert: {
+          auth0_sub?: string | null
           avatar_image_id?: string | null
           avatar_url?: string | null
           ban_expires_at?: string | null
@@ -2034,6 +2090,7 @@ export type Database = {
           username: string
         }
         Update: {
+          auth0_sub?: string | null
           avatar_image_id?: string | null
           avatar_url?: string | null
           ban_expires_at?: string | null
@@ -4602,6 +4659,8 @@ export type Database = {
       extract_cf_image_id: { Args: { url: string }; Returns: string }
       generate_deletion_confirmation_code: { Args: never; Returns: string }
       generate_ticket_number: { Args: never; Returns: string }
+      get_auth0_sub_from_jwt: { Args: never; Returns: string }
+      get_current_user_id: { Args: never; Returns: string }
       get_email_change_status: { Args: never; Returns: Json }
       get_filtered_profile: {
         Args: { _profile_user_id: string; _viewer_id?: string }
@@ -4670,6 +4729,7 @@ export type Database = {
         Returns: Json
       }
       has_aal2: { Args: never; Returns: boolean }
+      has_auth0_mfa: { Args: never; Returns: boolean }
       has_mfa_enabled: { Args: { _user_id: string }; Returns: boolean }
       has_pending_dependents: { Args: { item_id: string }; Returns: boolean }
       has_role: {
@@ -4685,6 +4745,7 @@ export type Database = {
         Args: { post_slug: string }
         Returns: undefined
       }
+      is_auth0_user: { Args: never; Returns: boolean }
       is_moderator: { Args: { _user_id: string }; Returns: boolean }
       is_superuser: { Args: { _user_id: string }; Returns: boolean }
       is_user_banned: { Args: { _user_id: string }; Returns: boolean }
diff --git a/supabase/migrations/20251101010106_13451034-559b-4b45-956c-b2cbeb9dda7f.sql b/supabase/migrations/20251101010106_13451034-559b-4b45-956c-b2cbeb9dda7f.sql
new file mode 100644
index 00000000..727b9345
--- /dev/null
+++ b/supabase/migrations/20251101010106_13451034-559b-4b45-956c-b2cbeb9dda7f.sql
@@ -0,0 +1,154 @@
+-- Phase 1: Auth0 Migration - Add auth0_sub column and update RLS policies
+-- This migration prepares the database to support Auth0 authentication alongside Supabase auth
+
+-- Add auth0_sub column to profiles table
+ALTER TABLE public.profiles 
+ADD COLUMN IF NOT EXISTS auth0_sub TEXT UNIQUE;
+
+-- Create index for faster auth0_sub lookups
+CREATE INDEX IF NOT EXISTS idx_profiles_auth0_sub ON public.profiles(auth0_sub);
+
+-- Add comment explaining the column
+COMMENT ON COLUMN public.profiles.auth0_sub IS 'Auth0 user identifier (sub claim from JWT). Used for Auth0 authentication integration.';
+
+-- Update RLS policies to support both Supabase and Auth0 authentication
+-- We'll keep existing policies and add Auth0 support
+
+-- Create helper function to get current user ID (works with both Supabase and Auth0)
+CREATE OR REPLACE FUNCTION public.get_current_user_id()
+RETURNS uuid
+LANGUAGE plpgsql
+SECURITY DEFINER
+SET search_path = public
+AS $$
+DECLARE
+  v_user_id uuid;
+  v_auth0_sub text;
+BEGIN
+  -- Try Supabase auth first
+  v_user_id := auth.uid();
+  
+  IF v_user_id IS NOT NULL THEN
+    RETURN v_user_id;
+  END IF;
+  
+  -- Try Auth0 sub from JWT
+  v_auth0_sub := current_setting('request.jwt.claims', true)::json->>'sub';
+  
+  IF v_auth0_sub IS NOT NULL THEN
+    -- Look up user_id by auth0_sub
+    SELECT user_id INTO v_user_id
+    FROM public.profiles
+    WHERE auth0_sub = v_auth0_sub;
+    
+    RETURN v_user_id;
+  END IF;
+  
+  -- No authenticated user found
+  RETURN NULL;
+END;
+$$;
+
+-- Add audit log column for Auth0 events
+ALTER TABLE public.admin_audit_log
+ADD COLUMN IF NOT EXISTS auth0_event_type TEXT;
+
+COMMENT ON COLUMN public.admin_audit_log.auth0_event_type IS 'Type of Auth0 event that triggered this audit log entry (e.g., mfa_enrollment, login, role_change)';
+
+-- Create table for tracking Auth0 sync status
+CREATE TABLE IF NOT EXISTS public.auth0_sync_log (
+  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
+  auth0_sub text NOT NULL,
+  user_id uuid REFERENCES public.profiles(user_id),
+  sync_type text NOT NULL, -- 'user_created', 'profile_updated', 'mfa_enrolled', etc.
+  sync_status text NOT NULL DEFAULT 'pending', -- 'pending', 'completed', 'failed'
+  error_message text,
+  metadata jsonb DEFAULT '{}'::jsonb,
+  created_at timestamp with time zone NOT NULL DEFAULT now(),
+  completed_at timestamp with time zone
+);
+
+-- Create index on auth0_sync_log
+CREATE INDEX IF NOT EXISTS idx_auth0_sync_log_auth0_sub ON public.auth0_sync_log(auth0_sub);
+CREATE INDEX IF NOT EXISTS idx_auth0_sync_log_user_id ON public.auth0_sync_log(user_id);
+CREATE INDEX IF NOT EXISTS idx_auth0_sync_log_status ON public.auth0_sync_log(sync_status);
+
+-- Enable RLS on auth0_sync_log
+ALTER TABLE public.auth0_sync_log ENABLE ROW LEVEL SECURITY;
+
+-- RLS policies for auth0_sync_log
+CREATE POLICY "Moderators can view all sync logs"
+  ON public.auth0_sync_log
+  FOR SELECT
+  TO authenticated
+  USING (is_moderator(auth.uid()));
+
+CREATE POLICY "System can insert sync logs"
+  ON public.auth0_sync_log
+  FOR INSERT
+  TO authenticated
+  WITH CHECK (true);
+
+CREATE POLICY "Users can view their own sync logs"
+  ON public.auth0_sync_log
+  FOR SELECT
+  TO authenticated
+  USING (user_id = auth.uid());
+
+-- Create function to extract Auth0 sub from JWT
+CREATE OR REPLACE FUNCTION public.get_auth0_sub_from_jwt()
+RETURNS text
+LANGUAGE plpgsql
+SECURITY DEFINER
+SET search_path = public
+AS $$
+BEGIN
+  RETURN current_setting('request.jwt.claims', true)::json->>'sub';
+EXCEPTION
+  WHEN OTHERS THEN
+    RETURN NULL;
+END;
+$$;
+
+-- Create function to check if user is authenticated via Auth0
+CREATE OR REPLACE FUNCTION public.is_auth0_user()
+RETURNS boolean
+LANGUAGE plpgsql
+SECURITY DEFINER
+SET search_path = public
+AS $$
+DECLARE
+  v_iss text;
+BEGIN
+  v_iss := current_setting('request.jwt.claims', true)::json->>'iss';
+  -- Auth0 issuer format: https://<tenant>.auth0.com/ or https://<tenant>.<region>.auth0.com/
+  RETURN v_iss LIKE '%auth0.com%';
+EXCEPTION
+  WHEN OTHERS THEN
+    RETURN false;
+END;
+$$;
+
+-- Create function to check Auth0 MFA status from JWT claims
+CREATE OR REPLACE FUNCTION public.has_auth0_mfa()
+RETURNS boolean
+LANGUAGE plpgsql
+SECURITY DEFINER
+SET search_path = public
+AS $$
+DECLARE
+  v_amr jsonb;
+BEGIN
+  -- Check if 'mfa' is in the amr (Authentication Methods Reference) array
+  v_amr := current_setting('request.jwt.claims', true)::json->'amr';
+  RETURN v_amr ? 'mfa';
+EXCEPTION
+  WHEN OTHERS THEN
+    RETURN false;
+END;
+$$;
+
+COMMENT ON FUNCTION public.get_current_user_id IS 'Returns the current user ID, supporting both Supabase auth.uid() and Auth0 sub claim lookup';
+COMMENT ON FUNCTION public.get_auth0_sub_from_jwt IS 'Extracts the Auth0 sub claim from the JWT token';
+COMMENT ON FUNCTION public.is_auth0_user IS 'Checks if the current user is authenticated via Auth0';
+COMMENT ON FUNCTION public.has_auth0_mfa IS 'Checks if the current Auth0 user has completed MFA (checks amr claim for mfa)';
\ No newline at end of file