diff --git a/helpers/placeholderentity_helpers.py b/helpers/placeholderentity_helpers.py
new file mode 100644
index 0000000..ee86cec
--- /dev/null
+++ b/helpers/placeholderentity_helpers.py
@@ -0,0 +1,76 @@
+from typing import List, Optional
+from datetime import datetime
+
+def get_movie_by_id(movie_id: int, movies: List[dict]) -> Optional[dict]:
+    """
+    Get a movie by its ID.
+
+    Args:
+        movie_id (int): The ID of the movie to retrieve.
+        movies (List[dict]): The list of movies.
+
+    Returns:
+        Optional[dict]: The movie dictionary if found, None otherwise.
+    """
+    for movie in movies:
+        if movie['id'] == movie_id:
+            return movie
+    return None
+
+def get_movies_by_title(title: str, movies: List[dict]) -> List[dict]:
+    """
+    Get movies by their title.
+
+    Args:
+        title (str): The title to search for.
+        movies (List[dict]): The list of movies.
+
+    Returns:
+        List[dict]: A list of movie dictionaries that match the title.
+    """
+    return [movie for movie in movies if title.lower() in movie['title'].lower()]
+
+def get_movies_by_year(year: int, movies: List[dict]) -> List[dict]:
+    """
+    Get movies by their release year.
+
+    Args:
+        year (int): The release year to search for.
+        movies (List[dict]): The list of movies.
+
+    Returns:
+        List[dict]: A list of movie dictionaries released in the given year.
+    """
+    return [movie for movie in movies if movie['release_year'] == year]
+
+def get_movies_by_genre(genre: str, movies: List[dict]) -> List[dict]:
+    """
+    Get movies by their genre.
+
+    Args:
+        genre (str): The genre to search for.
+        movies (List[dict]): The list of movies.
+
+    Returns:
+        List[dict]: A list of movie dictionaries that match the genre.
+    """
+    return [movie for movie in movies if genre.lower() in [g.lower() for g in movie['genres']]]
+
+def get_recently_added_movies(movies: List[dict], days: int = 30) -> List[dict]:
+    """
+    Get recently added movies within a specified number of days.
+
+    Args:
+        movies (List[dict]): The list of movies.
+        days (int): The number of days to consider as recently added (default: 30).
+
+    Returns:
+        List[dict]: A list of movie dictionaries added within the specified number of days.
+    """
+    today = datetime.now().date()
+    recently_added = []
+    for movie in movies:
+        added_date = datetime.strptime(movie['added_date'], '%Y-%m-%d').date()
+        if (today - added_date).days <= days:
+            recently_added.append(movie)
+    return recently_added
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