diff --git a/src/gradient_labs/_conversation_read.py b/src/gradient_labs/_conversation_read.py
index 2a31e39..bcdf1fe 100644
--- a/src/gradient_labs/_conversation_read.py
+++ b/src/gradient_labs/_conversation_read.py
@@ -19,10 +19,10 @@ class ReadParams:
 
 
 def read_conversation(
-    *, client: HttpClient, conversation_id: str, params: ReadParams
+    *, client: HttpClient, conversation_id: str, params: Optional[ReadParams] = None
 ) -> Conversation:
     path = f"conversations/{conversation_id}/read"
-    if params.support_platform:
+    if params and params.support_platform:
         path += "?support_platform={params.support_platform}"
 
     rsp = client.get(
diff --git a/src/gradient_labs/client.py b/src/gradient_labs/client.py
index a85fb04..8d7d1aa 100644
--- a/src/gradient_labs/client.py
+++ b/src/gradient_labs/client.py
@@ -168,7 +168,7 @@ def resume_conversation(self, *, conversation_id: str, params: ResumeParams) ->
         )
 
     def read_conversation(
-        self, *, conversation_id: str, params: ReadParams
+        self, *, conversation_id: str, params: Optional[ReadParams] = None
     ) -> Conversation:
         """Retrieves the conversation"""
         return read_conversation(