DeepSeek Auto Expert Mode

Automatically enables Expert mode on DeepSeek Chat interface after navigation or page load.

Ask a question, post a review, or report the script.

Wrap lines

// ==UserScript==
// @name         DeepSeek Auto Expert Mode
// @name:zh-CN   DeepSeek 自动启用 Expert 模式
// @description  Automatically enables Expert mode on DeepSeek Chat interface after navigation or page load.
// @description:zh-CN  在页面加载或路由切换后自动启用 DeepSeek 的 Expert 模式。
// @version      1.2026.04
// @namespace    https://github.com/clanedev
// @author       clane
// @match        https://chat.deepseek.com/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=deepseek.com
// @run-at       document-idle
// @grant        none
// @license      MIT
// ==/UserScript==

(function () {
    'use strict';

    function switchToExpert(){
        const expertBtn = document.querySelector('[data-model-type="expert"]');

        if (expertBtn && expertBtn.getAttribute('aria-checked') !== 'true') {
            expertBtn.click();
        }
    };


    const origPush = history.pushState;
    history.pushState = function(...args) {
        const result = origPush.apply(this, args);
        window.dispatchEvent(new Event('urlchanged'));
        return result;
    };

    window.addEventListener('popstate', onURLChange);
    window.addEventListener('urlchanged', onURLChange);

    function onURLChange() {
        const path = location.pathname;
        if(path === '/'){
            setTimeout(() => {
                switchToExpert();
            }, 100); // try 100~300ms
        }
    }

    onURLChange();
})();