diff --git a/agent.py b/agent.py
index 5398e19..0246f25 100644
--- a/agent.py
+++ b/agent.py
@@ -683,26 +683,22 @@ Provide unified summary (max 800 chars) covering all key points."""
     def _process_tool_result_hierarchical(self, tool_name: str, result: Any) -> str:
         """
         Intelligently process tool results based on size:
-        - Small (< 2KB): Pass through directly
-        - Medium (2-10KB): Truncate with head+tail
-        - Large (> 10KB): Hierarchical extraction in separate context
+        - Small (< 5KB): Pass through directly
+        - Medium (5-20KB): Hierarchical extraction with single-pass summarization
+        - Large (> 20KB): Hierarchical extraction with chunked processing
         """
         result_str = json.dumps(result) if not isinstance(result, str) else result
         size = len(result_str)
         
         # Small outputs: pass through directly
-        if size < 2000:
+        if size < 5000:
             print(f"  [Tool result: {size} chars, passing through]")
             return result_str
         
-        # Medium outputs: truncate with head+tail
-        elif size < 10000:
-            print(f"  [Tool result: {size} chars, truncating to 2000]")
-            return self._simple_truncate(result_str, 2000)
-        
-        # Large outputs: hierarchical extraction
+        # Medium and large outputs: hierarchical extraction with chunking
         else:
             print(f"  [Tool result: {size} chars, extracting key findings...]")
+            # _extract_key_findings automatically chunks large outputs
             return self._extract_key_findings(tool_name, result_str)
     
     def _prune_messages(self, messages: List[Dict], max_context_tokens: int = 80000) -> List[Dict]: