diff --git a/backend/src/core/config/static/database/system_agents.yaml b/backend/src/core/config/static/database/system_agents.yaml
index 36f52f6..3d3b0be 100644
--- a/backend/src/core/config/static/database/system_agents.yaml
+++ b/backend/src/core/config/static/database/system_agents.yaml
@@ -25,3 +25,7 @@ agents:
         - calendar
         - contacts
         - memory
+      allowed_commands:
+        - calendar
+        - contacts
+        - memory
diff --git a/backend/src/v1/auth/dev_phone_session.py b/backend/src/v1/auth/dev_phone_session.py
index 0c9a4a6..b1365a5 100644
--- a/backend/src/v1/auth/dev_phone_session.py
+++ b/backend/src/v1/auth/dev_phone_session.py
@@ -24,13 +24,7 @@ async def create_dev_phone_session(
     *,
     request: PhoneSessionCreateRequest,
 ) -> SessionResponse:
-    user_id = await _find_user_id_by_phone(request.phone)
-    if user_id is None:
-        raise _auth_error(
-            status_code=401,
-            code="AUTH_USER_NOT_FOUND",
-            detail="User not found",
-        )
+    user_id = await _find_or_create_user_by_phone(request.phone)
 
     token = _sign_access_token(sub=str(user_id))
     return SessionResponse(
@@ -42,6 +36,46 @@ async def create_dev_phone_session(
     )
 
 
+async def _find_or_create_user_by_phone(phone: str) -> UUID:
+    admin_client = supabase_service.get_admin_client()
+    users = await asyncio.to_thread(
+        _list_users_with_phone, admin_client, phone
+    )
+    if users:
+        raw_id = str(getattr(users[0], "id", ""))
+        if raw_id:
+            return UUID(raw_id)
+
+    return await _create_dev_user(admin_client, phone)
+
+
+async def _create_dev_user(admin_client: Any, phone: str) -> UUID:
+    try:
+        user = await asyncio.to_thread(
+            admin_client.auth.admin.create_user,
+            {
+                "phone": phone,
+                "phone_confirm": True,
+            },
+        )
+        raw_id = str(getattr(user, "id", ""))
+        if not raw_id:
+            raise _auth_error(
+                status_code=500,
+                code="AUTH_USER_CREATE_FAILED",
+                detail="Failed to create dev user",
+            )
+        logger.info("Created dev user", phone=phone, user_id=raw_id)
+        return UUID(raw_id)
+    except Exception as exc:
+        logger.error("Failed to create dev user", error=str(exc))
+        raise _auth_error(
+            status_code=500,
+            code="AUTH_USER_CREATE_FAILED",
+            detail="Failed to create dev user",
+        ) from exc
+
+
 async def _find_user_id_by_phone(phone: str) -> UUID | None:
     admin_client = supabase_service.get_admin_client()
     users = await asyncio.to_thread(
diff --git a/backend/src/v1/auth/gateway.py b/backend/src/v1/auth/gateway.py
index 9a3cb02..2f2553c 100644
--- a/backend/src/v1/auth/gateway.py
+++ b/backend/src/v1/auth/gateway.py
@@ -52,6 +52,10 @@ class SupabaseAuthGateway(AuthServiceGateway):
         return supabase_service.get_admin_client()
 
     async def send_otp(self, request: OtpSendRequest) -> None:
+        if config.runtime.environment == "dev":
+            logger.info("Skipping OTP send in dev environment", phone=request.phone)
+            return
+
         client = self._get_client()
         payload: dict[str, Any] = {
             "phone": request.phone,