avoid mutating shared search config

graphiti_core/graphiti.py

@@ -1568,7 +1568,7 @@ async def search(
         """
         search_config = (
             EDGE_HYBRID_SEARCH_RRF if center_node_uuid is None else EDGE_HYBRID_SEARCH_NODE_DISTANCE
-        )
+        ).model_copy(deep=True)
         search_config.limit = num_results
 
         edges = (

tests/test_graphiti_search.py

@@ -0,0 +1,48 @@
+from types import SimpleNamespace
+
+import pytest
+
+import graphiti_core.graphiti as graphiti_module
+from graphiti_core.driver.driver import GraphProvider
+from graphiti_core.graphiti import Graphiti
+from graphiti_core.search.search_config import SearchResults
+from graphiti_core.search.search_config_recipes import (
+    EDGE_HYBRID_SEARCH_NODE_DISTANCE,
+    EDGE_HYBRID_SEARCH_RRF,
+)
+
+
+@pytest.mark.parametrize(
+    ('center_node_uuid', 'recipe', 'num_results'),
+    [
+        (None, EDGE_HYBRID_SEARCH_RRF, 3),
+        ('center-node-uuid', EDGE_HYBRID_SEARCH_NODE_DISTANCE, 7),
+    ],
+)
+async def test_search_does_not_mutate_shared_recipe(
+    monkeypatch, center_node_uuid, recipe, num_results
+):
+    graphiti = object.__new__(Graphiti)
+    graphiti.clients = SimpleNamespace(
+        driver=SimpleNamespace(provider=GraphProvider.NEO4J),
+    )
+    original_limit = recipe.limit
+    received_configs = []
+
+    async def fake_search(_clients, _query, _group_ids, config, _search_filter, **_kwargs):
+        received_configs.append(config)
+        return SearchResults()
+
+    monkeypatch.setattr(graphiti_module, 'search', fake_search)
+
+    try:
+        await graphiti.search(
+            'query',
+            center_node_uuid=center_node_uuid,
+            num_results=num_results,
+        )
+
+        assert received_configs[0].limit == num_results
+        assert recipe.limit == original_limit
+    finally:
+        recipe.limit = original_limit