diff --git a/src/posit/connect/content.py b/src/posit/connect/content.py
index 36608396..50ed3ae3 100644
--- a/src/posit/connect/content.py
+++ b/src/posit/connect/content.py
@@ -430,7 +430,10 @@ def find(
         *,
         name: Optional[str] = None,
         owner_guid: Optional[str] = None,
-        include: str | list[Literal["owner", "tags", "vanity_url"]] = [],
+        include: Optional[
+            Literal["owner", "tags", "vanity_url"]
+            | list[Literal["owner", "tags", "vanity_url"]]
+        ] = None,
     ) -> List[ContentItem]:
         """Find content matching the specified criteria.
 
@@ -462,7 +465,9 @@ def find(
         *,
         name: Optional[str] = None,
         owner_guid: Optional[str] = None,
-        include: str | list[Literal["owner", "tags"]] = [],
+        include: Optional[
+            Literal["owner", "tags"] | list[Literal["owner", "tags"]]
+        ] = None,
     ) -> List[ContentItem]:
         """Find content matching the specified criteria.
 
@@ -489,20 +494,31 @@ def find(
         ...
 
     @overload
-    def find(self, **conditions) -> List[ContentItem]: ...
+    def find(
+        self, include: Optional[str | list[Any]], **conditions
+    ) -> List[ContentItem]: ...
 
-    def find(self, **conditions) -> List[ContentItem]:
+    def find(
+        self, include: Optional[str | list[Any]] = None, **conditions
+    ) -> List[ContentItem]:
         """Find content matching the specified conditions.
 
         Returns
         -------
         List[ContentItem]
         """
+        if isinstance(include, list):
+            include = ",".join(include)
+
+        if include is not None:
+            conditions["include"] = include
+
+        if self.owner_guid:
+            conditions["owner_guid"] = self.owner_guid
+
         path = "v1/content"
         url = self.params.url + path
-        response = self.params.session.get(
-            url, params={"owner_guid": self.owner_guid, **conditions}
-        )
+        response = self.params.session.get(url, params=conditions)
         return [
             ContentItem(
                 self.params,
@@ -517,7 +533,10 @@ def find_one(
         *,
         name: Optional[str] = None,
         owner_guid: Optional[str] = None,
-        include: str | list[Literal["owner", "tags", "vanity_url"]] = [],
+        include: Optional[
+            Literal["owner", "tags", "vanity_url"]
+            | list[Literal["owner", "tags", "vanity_url"]]
+        ] = None,
     ) -> Optional[ContentItem]:
         """Find first content result matching the specified conditions.
 
@@ -547,7 +566,9 @@ def find_one(
         *,
         name: Optional[str] = None,
         owner_guid: Optional[str] = None,
-        include: str | list[Literal["owner", "tags"]] = [],
+        include: Optional[
+            Literal["owner", "tags"] | list[Literal["owner", "tags"]]
+        ] = None,
     ) -> Optional[ContentItem]:
         """Find first content result matching the specified conditions.
 
diff --git a/tests/posit/connect/test_content.py b/tests/posit/connect/test_content.py
index b42a3f27..87e7bfbd 100644
--- a/tests/posit/connect/test_content.py
+++ b/tests/posit/connect/test_content.py
@@ -368,6 +368,24 @@ def test_params_include(self):
         #  assert
         assert mock_get.call_count == 1
 
+    @responses.activate
+    def test_params_include_list(self):
+        # behavior
+        mock_get = responses.get(
+            "https://connect.example/__api__/v1/content",
+            json=load_mock("v1/content.json"),
+            match=[matchers.query_param_matcher({"include": "tags,owner"})],
+        )
+
+        # setup
+        client = Client("https://connect.example", "12345")
+
+        # invoke
+        client.content.find(include=["tags", "owner"])
+
+        #  assert
+        assert mock_get.call_count == 1
+
     @responses.activate
     def test_params_include_none(self):
         # behavior