diff --git a/cognee/modules/retrieval/jaccard_retrival.py b/cognee/modules/retrieval/jaccard_retrival.py
index 91d2b67f7..b864d62d9 100644
--- a/cognee/modules/retrieval/jaccard_retrival.py
+++ b/cognee/modules/retrieval/jaccard_retrival.py
@@ -2,13 +2,20 @@ from cognee.modules.retrieval.lexical_retriever import LexicalRetriever
 import re
 from collections import Counter
 from typing import Optional
+
+
 class JaccardChunksRetriever(LexicalRetriever):
     """
     Retriever that specializes LexicalRetriever to use Jaccard similarity.
     """
 
-    def __init__(self, top_k: int = 10, with_scores: bool = False,
-                 stop_words: Optional[list[str]] = None, multiset_jaccard: bool = False):
+    def __init__(
+        self,
+        top_k: int = 10,
+        with_scores: bool = False,
+        stop_words: Optional[list[str]] = None,
+        multiset_jaccard: bool = False,
+    ):
         """
         Parameters
         ----------
@@ -25,10 +32,7 @@ class JaccardChunksRetriever(LexicalRetriever):
         self.multiset_jaccard = multiset_jaccard
 
         super().__init__(
-            tokenizer=self._tokenizer,
-            scorer=self._scorer,
-            top_k=top_k,
-            with_scores=with_scores
+            tokenizer=self._tokenizer, scorer=self._scorer, top_k=top_k, with_scores=with_scores
         )
 
     def _tokenizer(self, text: str) -> list[str]:
diff --git a/cognee/modules/retrieval/lexical_retriever.py b/cognee/modules/retrieval/lexical_retriever.py
index 2292b64c8..fa80fe320 100644
--- a/cognee/modules/retrieval/lexical_retriever.py
+++ b/cognee/modules/retrieval/lexical_retriever.py
@@ -12,8 +12,9 @@ logger = get_logger("LexicalRetriever")
 
 
 class LexicalRetriever(BaseRetriever):
-
-    def __init__(self, tokenizer: Callable, scorer: Callable, top_k: int = 10, with_scores: bool = False):
+    def __init__(
+        self, tokenizer: Callable, scorer: Callable, top_k: int = 10, with_scores: bool = False
+    ):
         if not callable(tokenizer) or not callable(scorer):
             raise TypeError("tokenizer and scorer must be callables")
         if not isinstance(top_k, int) or top_k <= 0:
@@ -25,51 +26,51 @@ class LexicalRetriever(BaseRetriever):
         self.with_scores = bool(with_scores)
 
         # Cache keyed by dataset context
-        self.chunks: dict[str, Any] = {}   # {chunk_id: tokens}
-        self.payloads: dict[str, Any] = {} # {chunk_id: original_document}
+        self.chunks: dict[str, Any] = {}  # {chunk_id: tokens}
+        self.payloads: dict[str, Any] = {}  # {chunk_id: original_document}
         self._initialized = False
         self._init_lock = asyncio.Lock()
 
     async def initialize(self):
-      """Initialize retriever by reading all DocumentChunks from graph_engine."""
-      async with self._init_lock:
-          if self._initialized:
-              return
+        """Initialize retriever by reading all DocumentChunks from graph_engine."""
+        async with self._init_lock:
+            if self._initialized:
+                return
 
-          logger.info("Initializing LexicalRetriever by loading DocumentChunks from graph engine")
+            logger.info("Initializing LexicalRetriever by loading DocumentChunks from graph engine")
 
-          try:
-              graph_engine = await get_graph_engine()
-              nodes, _ = await graph_engine.get_filtered_graph_data([{"type": ["DocumentChunk"]}])
-          except Exception as e:
-              logger.error("Graph engine initialization failed")
-              raise NoDataError("Graph engine initialization failed") from e
+            try:
+                graph_engine = await get_graph_engine()
+                nodes, _ = await graph_engine.get_filtered_graph_data([{"type": ["DocumentChunk"]}])
+            except Exception as e:
+                logger.error("Graph engine initialization failed")
+                raise NoDataError("Graph engine initialization failed") from e
 
-          chunk_count = 0
-          for node in nodes:
-              try:
-                  chunk_id, document = node
-              except Exception:
-                  logger.warning("Skipping node with unexpected shape: %r", node)
-                  continue
+            chunk_count = 0
+            for node in nodes:
+                try:
+                    chunk_id, document = node
+                except Exception:
+                    logger.warning("Skipping node with unexpected shape: %r", node)
+                    continue
 
-              if document.get("type") == "DocumentChunk" and document.get("text"):
-                  try:
-                      tokens = self.tokenizer(document["text"])
-                      if not tokens:
-                          continue
-                      self.chunks[str(document.get("id",chunk_id))] = tokens
-                      self.payloads[str(document.get("id",chunk_id))] = document
-                      chunk_count += 1
-                  except Exception as e:
-                      logger.error("Tokenizer failed for chunk %s: %s", chunk_id, str(e))
+                if document.get("type") == "DocumentChunk" and document.get("text"):
+                    try:
+                        tokens = self.tokenizer(document["text"])
+                        if not tokens:
+                            continue
+                        self.chunks[str(document.get("id", chunk_id))] = tokens
+                        self.payloads[str(document.get("id", chunk_id))] = document
+                        chunk_count += 1
+                    except Exception as e:
+                        logger.error("Tokenizer failed for chunk %s: %s", chunk_id, str(e))
 
-          if chunk_count == 0:
-              logger.error("Initialization completed but no valid chunks were loaded.")
-              raise NoDataError("No valid chunks loaded during initialization.")
+            if chunk_count == 0:
+                logger.error("Initialization completed but no valid chunks were loaded.")
+                raise NoDataError("No valid chunks loaded during initialization.")
 
-          self._initialized = True
-          logger.info("Initialized with %d document chunks", len(self.chunks))
+            self._initialized = True
+            logger.info("Initialized with %d document chunks", len(self.chunks))
 
     async def get_context(self, query: str) -> Any:
         """Retrieves relevant chunks for the given query."""
@@ -103,7 +104,12 @@ class LexicalRetriever(BaseRetriever):
             results.append((chunk_id, score))
 
         top_results = nlargest(self.top_k, results, key=lambda x: x[1])
-        logger.info("Retrieved %d/%d chunks for query (len=%d)", len(top_results), len(results), len(query_tokens))
+        logger.info(
+            "Retrieved %d/%d chunks for query (len=%d)",
+            len(top_results),
+            len(results),
+            len(query_tokens),
+        )
 
         if self.with_scores:
             return [(self.payloads[chunk_id], score) for chunk_id, score in top_results]
diff --git a/cognee/modules/search/methods/get_search_type_tools.py b/cognee/modules/search/methods/get_search_type_tools.py
index c5ea53a62..9cf67785e 100644
--- a/cognee/modules/search/methods/get_search_type_tools.py
+++ b/cognee/modules/search/methods/get_search_type_tools.py
@@ -153,10 +153,12 @@ async def get_search_type_tools(
             TemporalRetriever(top_k=top_k).get_completion,
             TemporalRetriever(top_k=top_k).get_context,
         ],
-        SearchType.CHUNKS_LEXICAL: (lambda _r=JaccardChunksRetriever(top_k=top_k): [
-          _r.get_completion,
-          _r.get_context,
-        ])(),
+        SearchType.CHUNKS_LEXICAL: (
+            lambda _r=JaccardChunksRetriever(top_k=top_k): [
+                _r.get_completion,
+                _r.get_context,
+            ]
+        )(),
         SearchType.CODING_RULES: [
             CodingRulesRetriever(rules_nodeset_name=node_name).get_existing_rules,
         ],