How to close tab automatically if URL has specific word? [closed]

You will need Javascript to do this. You can use window.close().

So adding this script to your page should do the job:

function check_if_should_close(url) {
    if ( PUT YOUR CONDITION HERE )  // i.e. url.match(/\?deleted=1/)
        return true;
    return false;
}

if ( check_if_should_close(document.location.href) ) {
    window.close();
}