let client = deepseek::Client::from_env();
        let fin_agent = client
            .agent(deepseek::DEEPSEEK_REASONER)
            .preamble(PREAMPLE)
            .max_tokens(4 * 1024)
            .tools(tools)
            .build();

        let resp = fin_agent
            .prompt("Stock symbol of XXX in Hong Kong Stock Exchange")
            .await
            .unwrap();
        println!("Response: {}", resp);