params.py

import gradio as gr

load_js = """
function(text_input, url_params) {
    console.log(text_input, url_params);
    const params = new URLSearchParams(window.location.search);
    url_params = Object.fromEntries(params);
    return [text_input, url_params]
}
"""
def predict(text, url_params):
    mod_url=""
    mod=gr.HTML("")
    out = None
    valid=gr.update(visible=False)
    mod_url = url_params.get('url')
    print (mod_url)
    return ["" + text + "", mod_url]
with gr.Blocks() as app:
    with gr.Row(visible=False):
        text_input=gr.Textbox()
        text_output=gr.Textbox()
        url_params = gr.JSON({}, visible=True, label="")
    app.load(fn=predict, inputs=[text_input,url_params], outputs=[text_output,text_input],_js=load_js)