diff --git a/src/typesense/types/document.py b/src/typesense/types/document.py
index a0b63b4..496432d 100644
--- a/src/typesense/types/document.py
+++ b/src/typesense/types/document.py
@@ -915,23 +915,42 @@ class DeleteSingleDocumentParameters(typing.TypedDict):
     ignore_not_found: typing.NotRequired[bool]
 
 
-class DeleteQueryParameters(typing.TypedDict):
+class TruncateDeleteParameters(typing.TypedDict):
     """
-    Parameters for deleting documents.
+    Parameters for truncating a collection (deleting all documents, keeping schema).
+
+    Attributes:
+      truncate (bool): Truncate the collection, keeping just the schema.
+    """
+
+    truncate: bool
+
+
+class FilterDeleteParameters(typing.TypedDict):
+    """
+    Parameters for deleting documents by filter.
 
     Attributes:
-      truncate (str): Truncate the collection, keeping just the schema.
       filter_by (str): Filter to apply to documents.
       batch_size (int): Batch size for deleting documents.
       ignore_not_found (bool): Ignore not found documents.
     """
 
-    truncate: typing.NotRequired[bool]
     filter_by: str
     batch_size: typing.NotRequired[int]
     ignore_not_found: typing.NotRequired[bool]
 
 
+DeleteQueryParameters = typing.Union[TruncateDeleteParameters, FilterDeleteParameters]
+"""
+Discriminated union of parameters for deleting documents.
+
+Either:
+  - TruncateDeleteParameters: Use truncate to delete all documents, keeping the schema.
+  - FilterDeleteParameters: Use filter_by (and optionally batch_size, ignore_not_found) to delete specific documents.
+"""
+
+
 class DeleteResponse(typing.TypedDict):
     """
     Response from deleting documents.
diff --git a/tests/documents_test.py b/tests/documents_test.py
index 9926798..994845a 100644
--- a/tests/documents_test.py
+++ b/tests/documents_test.py
@@ -206,6 +206,17 @@ def test_delete(
     assert response == {"num_deleted": 1}
 
 
+def test_truncate(
+    actual_documents: Documents[Companies],
+    delete_all: None,
+    create_collection: None,
+    create_document: None,
+) -> None:
+    """Test that the Documents object can delete a document from Typesense server."""
+    response = actual_documents.delete({"truncate": True})
+    assert response == {"num_deleted": 1}
+
+
 def test_delete_ignore_missing(
     actual_documents: Documents[Companies],
     delete_all: None,