Enum ToolOutput 

pub enum ToolOutput {
    Value(JsonValue),
    Stream(Pin<Box<dyn Stream<Item = Result<JsonValue, ToolError>> + Send>>),
}

Tool execution output - either a single value or a stream of values

Variants

Value(JsonValue)

Single final result

Stream(Pin<Box<dyn Stream<Item = Result<JsonValue, ToolError>> + Send>>)

Stream of preliminary results, ending with final result Each item in the stream represents a preliminary update