diff --git a/llm/llm.go b/llm/llm.go
index 3ba6ed4..1e53ea3 100644
--- a/llm/llm.go
+++ b/llm/llm.go
@@ -66,6 +66,8 @@
 	Type        string
 	Description string
 	InputSchema json.RawMessage
+	// EndsTurn indicates that this tool should cause the model to end its turn when used
+	EndsTurn bool
 
 	// The Run function is automatically called when the tool is used.
 	// Run functions may be called concurrently with each other and themselves.