diff --git a/skore/src/skore/project.py b/skore/src/skore/project.py
index e0701deb..666c0360 100644
--- a/skore/src/skore/project.py
+++ b/skore/src/skore/project.py
@@ -41,6 +41,7 @@ def __init__(
     @singledispatchmethod
     def put(self, key: str, value: Any, on_error: Literal["warn", "raise"] = "warn"):
         """Add a value to the Project.
+        If an item with the same key already exists, it replaces the value with the new one.
 
         If `on_error` is "raise", any error stops the execution. If `on_error`
         is "warn" (or anything other than "raise"), a warning is shown instead.
@@ -87,9 +88,9 @@ def put_several(
 
         Parameters
         ----------
-        key_to_value : dict[str, Any]
+        key_to_value: dict[str, Any]
             The key-value pairs to put in the Project. Keys must be strings.
-        on_error : "warn" or "raise", optional
+        on_error: "warn" or "raise", optional
             Upon error (e.g. if a key is not a string), whether to raise an error or
             to print a warning. Default is "warn".
 
@@ -112,7 +113,17 @@ def put_item(self, key: str, item: Item):
         self.item_repository.put_item(key, item)
 
     def get(self, key: str) -> Any:
-        """Get the value corresponding to `key` from the Project."""
+        """Get and returns the value corresponding to `key` from the Project.
+        Parameters
+        ----------
+        key: str
+            The key corresponding to the item to get.
+
+        Raises
+        ------
+        KeyError
+            Renders KeyError if the input key doesn't correspond to any item.
+        """
         item = self.get_item(key)
 
         if isinstance(item, PrimitiveItem):
@@ -131,15 +142,49 @@ def get(self, key: str) -> Any:
             raise ValueError(f"Item {item} is not a known item type.")
 
     def get_item(self, key: str) -> Item:
-        """Add the Item corresponding to `key` from the Project."""
+        """Get and returns the Item corresponding to `key` from the Project.
+        Parameters
+        ----------
+        key: str
+            The key corresponding to the item to get.
+
+        Attributes
+        ----------
+        created_at: DateTime
+            DateTime when the item was created.
+        updated_at: DateTime
+            DateTime of the last modification.
+        primitive: Any
+            Value corresponding to the item.
+
+        Raises
+        ------
+        KeyError
+            Renders KeyError if the input key doesn't correspond to any item."""
         return self.item_repository.get_item(key)
 
     def list_item_keys(self) -> list[str]:
-        """List all item keys in the Project."""
+        """List all item keys in the Project.
+        Returns
+        -------
+        List:
+            Returns the list of items keys. Each key is a string.
+            If the project contains no item, returns an empty list.
+        """
         return self.item_repository.keys()
 
     def delete_item(self, key: str):
-        """Delete an item from the Project."""
+        """Delete an item from the Project.
+        Parameters
+        ----------
+        key: str
+            The key corresponding to the item to delete.
+
+        Raises
+        ------
+        KeyError
+            Renders KeyError if the input key doesn't correspond to any item.
+        """
         self.item_repository.delete_item(key)
 
     def put_view(self, key: str, view: View):
@@ -147,15 +192,46 @@ def put_view(self, key: str, view: View):
         self.view_repository.put_view(key, view)
 
     def get_view(self, key: str) -> View:
-        """Get the view corresponding to `key` from the Project."""
+        """Get the view corresponding to `key` from the Project.
+        Parameters
+        ----------
+        key: str
+            The key corresponding to the item to get.
+
+        Attributes
+        ----------
+        layout: List[str]
+            A list of the keys of items, in the same order as displayed.
+
+        Raises
+        ------
+        KeyError
+            Renders KeyError if the input key doesn't correspond to any item.
+        """
         return self.view_repository.get_view(key)
 
     def delete_view(self, key: str):
-        """Delete the view corresponding to `key` from the Project."""
+        """Delete the view corresponding to `key` from the Project.
+        Parameters
+        ----------
+        key: str
+            The key corresponding to the view to delete.
+
+        Raises
+        ------
+        KeyError
+            Renders KeyError if the input key doesn't correspond to any view.
+        """
         return self.view_repository.delete_view(key)
 
     def list_view_keys(self) -> list[str]:
-        """List all view keys in the Project."""
+        """List all view keys in the Project.
+        Returns
+        -------
+        List:
+            Returns the list of view keys. Each key is a string.
+            If the project contains no view, returns an empty list.
+        """
         return self.view_repository.keys()