app.py

import gradio as gr
import time
import random
import json

get_window_url_params = """
    function() {
        const params = new URLSearchParams(window.location.search);
        const url_params = Object.fromEntries(params);
        return url_params;
        }
    """

with gr.Blocks() as demo:
    gr.Markdown("""## Gradio send queryparam to chatbot
type `read query`    
""")
    url_params = gr.JSON({}, visible=False, label="URL Params")
    chatbot = gr.Chatbot().style(height=500)
    msg = gr.Textbox()
    clear = gr.Button("Clear")

    def user(user_message, url_params, history):
        return "", history + [[user_message, None]]

    def bot(history, url_params):
        if "read query" in history[-1][0]:
            bot_message = f"""
                            here your URL params:
                            {json.dumps(url_params, indent=4)}
                        """
        else:
            bot_message = random.choice(["Yes", "No"])
        history[-1][1] = bot_message
        time.sleep(1)
        return history

    msg.submit(user, inputs=[msg, url_params, chatbot], outputs=[msg, chatbot], queue=False).then(
        fn=bot, inputs=[chatbot, url_params], outputs=[chatbot]
    )
    clear.click(lambda: None, None, chatbot, queue=False)
    demo.load(
        fn=lambda x: x,
        inputs=[url_params],
        outputs=[url_params],
        _js=get_window_url_params,
        queue=False
    )

demo.launch()