Add tool execution result to ToolUsageFinishedEvent

Co-Authored-By: Joe Moura <joao@crewai.com>

src/crewai/tools/tool_usage.py

@@ -244,6 +244,7 @@ class ToolUsage:
             tool_calling=calling,
             from_cache=from_cache,
             started_at=started_at,
+            result=result,  # Pass the result
         )
 
         if (
@@ -492,7 +493,7 @@ class ToolUsage:
         crewai_event_bus.emit(self, ToolUsageErrorEvent(**{**event_data, "error": e}))
 
     def on_tool_use_finished(
-        self, tool: Any, tool_calling: ToolCalling, from_cache: bool, started_at: float
+        self, tool: Any, tool_calling: ToolCalling, from_cache: bool, started_at: float, result: Any = None
     ) -> None:
         finished_at = time.time()
         event_data = self._prepare_event_data(tool, tool_calling)
@@ -501,6 +502,7 @@ class ToolUsage:
                 "started_at": datetime.datetime.fromtimestamp(started_at),
                 "finished_at": datetime.datetime.fromtimestamp(finished_at),
                 "from_cache": from_cache,
+                "result": result,  # Add the result to the event data
             }
         )
         crewai_event_bus.emit(self, ToolUsageFinishedEvent(**event_data))

src/crewai/utilities/events/tool_usage_events.py

@@ -30,6 +30,7 @@ class ToolUsageFinishedEvent(ToolUsageEvent):
     started_at: datetime
     finished_at: datetime
     from_cache: bool = False
+    result: Any = None  # Add this field
     type: str = "tool_usage_finished"
 
 

tests/utilities/test_events.py

@@ -358,6 +358,7 @@ def test_tools_emits_finished_events():
     assert received_events[0].tool_args == {}
     assert received_events[0].type == "tool_usage_finished"
     assert isinstance(received_events[0].timestamp, datetime)
+    assert received_events[0].result == "hi"  # The SayHiTool returns "hi"
 
 
 @pytest.mark.vcr(filter_headers=["authorization"])