fix: add missing parameters order, limit, before, and after in get_assistants method for openai (#7537)

- Ensured that `before` and `after` parameters are only passed when provided to avoid AttributeError.
- Implemented safe access using default values for `before` and `after` to prevent missing attribute issues.
- Added consistent handling of `order` and `limit` to improve flexibility and robustness in API calls.

litellm/assistants/main.py

@@ -131,6 +131,10 @@ def get_assistants(
             timeout=timeout,
             max_retries=optional_params.max_retries,
             organization=organization,
+            order=getattr(optional_params, "order", "desc"),
+            limit=getattr(optional_params, "limit", 20),
+            before=getattr(optional_params, "before", None),
+            after=getattr(optional_params, "after", None),
             client=client,
             aget_assistants=aget_assistants,  # type: ignore
         )  # type: ignore

litellm/llms/openai/openai.py

@@ -1928,6 +1928,10 @@ class OpenAIAssistantsAPI(BaseLLM):
         max_retries: Optional[int],
         organization: Optional[str],
         client: Optional[AsyncOpenAI],
+        order: Optional[str] = 'desc',
+        limit: Optional[int] = 20,
+        before: Optional[str] = None,
+        after: Optional[str] = None,
     ) -> AsyncCursorPage[Assistant]:
         openai_client = self.async_get_openai_client(
             api_key=api_key,
@@ -1937,8 +1941,16 @@ class OpenAIAssistantsAPI(BaseLLM):
             organization=organization,
             client=client,
         )
+        request_params = {
+            "order": order,
+            "limit": limit,
+        }
+        if before:
+            request_params["before"] = before
+        if after:
+            request_params["after"] = after
             
-        response = await openai_client.beta.assistants.list()
+        response = await openai_client.beta.assistants.list(**request_params)
 
         return response
 
@@ -1954,6 +1966,10 @@ class OpenAIAssistantsAPI(BaseLLM):
         organization: Optional[str],
         client: Optional[AsyncOpenAI],
         aget_assistants: Literal[True],
+        order: Optional[str] = 'desc',
+        limit: Optional[int] = 20,
+        before: Optional[str] = None,
+        after: Optional[str] = None,
     ) -> Coroutine[None, None, AsyncCursorPage[Assistant]]:
         ...
 
@@ -1967,6 +1983,10 @@ class OpenAIAssistantsAPI(BaseLLM):
         organization: Optional[str],
         client: Optional[OpenAI],
         aget_assistants: Optional[Literal[False]],
+        order: Optional[str] = 'desc',
+        limit: Optional[int] = 20,
+        before: Optional[str] = None,
+        after: Optional[str] = None,
     ) -> SyncCursorPage[Assistant]: 
         ...
 
@@ -1981,6 +2001,10 @@ class OpenAIAssistantsAPI(BaseLLM):
         organization: Optional[str],
         client=None,
         aget_assistants=None,
+        order: Optional[str] = 'desc',
+        limit: Optional[int] = 20,
+        before: Optional[str] = None,
+        after: Optional[str] = None,
     ):
         if aget_assistants is not None and aget_assistants is True:
             return self.async_get_assistants(
@@ -1990,6 +2014,10 @@ class OpenAIAssistantsAPI(BaseLLM):
                 max_retries=max_retries,
                 organization=organization,
                 client=client,
+                order=order,
+                limit=limit,
+                before=before,
+                after=after,
             )
         openai_client = self.get_openai_client(
             api_key=api_key,
@@ -2000,7 +2028,18 @@ class OpenAIAssistantsAPI(BaseLLM):
             client=client,
         )
 
-        response = openai_client.beta.assistants.list()
+        request_params = {
+            "order": order,
+            "limit": limit,
+        }
+
+        if before:
+            request_params["before"] = before
+        if after:
+            request_params["after"] = after
+
+
+        response = openai_client.beta.assistants.list(**request_params)
 
         return response
 

litellm/proxy/proxy_server.py

@@ -4434,6 +4434,10 @@ async def get_assistants(
     request: Request,
     fastapi_response: Response,
     user_api_key_dict: UserAPIKeyAuth = Depends(user_api_key_auth),
+    order: Optional[str] = Query(None, description="Sort order by the created_at timestamp of the objects. asc for ascending order and desc for descending order."),
+    limit: Optional[int] = Query(None, description="A limit on the number of objects to be returned. Limit can range between 1 and 100, and the default is 20."),
+    after: Optional[str] = Query(None, description="A cursor for use in pagination. after is an object ID that defines your place in the list. For instance, if you make a list request and receive 100 objects, ending with obj_foo, your subsequent call can include after=obj_foo in order to fetch the next page of the list."),
+    before: Optional[str] = Query(None, description="A cursor for use in pagination. before is an object ID that defines your place in the list. For instance, if you make a list request and receive 100 objects, starting with obj_foo, your subsequent call can include before=obj_foo in order to fetch the previous page of the list."),
 ):
     """
     Returns a list of assistants.
@@ -4456,6 +4460,28 @@ async def get_assistants(
             proxy_config=proxy_config,
         )
 
+        # Validate `order` parameter
+        if order and order not in ["asc", "desc"]:
+            raise HTTPException(
+                status_code=400, detail={"error": "order must be 'asc' or 'desc'"}
+            )
+        if order:
+            data["order"] = order
+
+        # Validate `limit` parameter
+        if limit is not None:
+            if not (1 <= limit <= 100):
+                raise HTTPException(
+                    status_code=400, detail={"error": "limit must be between 1 and 100"}
+                )
+            data["limit"] = limit
+
+        # Add pagination cursors if provided
+        if after:
+            data["after"] = after
+        if before:
+            data["before"] = before
+
         # for now use custom_llm_provider=="openai" -> this will change as LiteLLM adds more providers for acreate_batch
         if llm_router is None:
             raise HTTPException(