Zca-js NPM | npm.io

ZCA-JS

This is an unofficial Zalo API for personal account. It work by simulating the browser to interact with Zalo Web.

disclaimer: We are not responsible if your account is locked or banned by Zalo. Use it at your own risk.

Installation

bun install zca-js # or npm install zca-js

Documentation

See API Documentation for more details.

Basic Usages

Login

!TIP If you have opened the website https://chat.zalo.me/ but the extension does not have IMEI & Cookies, please click Refresh Page. Thank you very much ><

UPDATE: You can now get all required information by using ZaloDataExtractor extension. Just open the extension and copy the data to your clipboard.

import { Zalo } from "zca-js";

const zalo = new Zalo(
    {
        cookie: "your_cookie_here",
        imei: "your_imei_here",
        userAgent: "your_user_agent_here",
    },
    {
        selfListen: false,
        checkUpdate: true,
    },
);

const api = await zalo.login();

Alternative: We also support J2TEAM Cookies extension:

import fs from "node:fs";
import { Zalo } from "zca-js";

const zalo = new Zalo(
    {
        cookie: JSON.parse(fs.readFileSync("./cookies.json", "utf-8")),
        imei: "your_imei_here",
        userAgent: "your_user_agent_here",
    },
    {
        selfListen: false,
        checkUpdate: true,
    },
);

const api = await zalo.login();

cookie: Your Zalo cookie. You can get it by using J2TEAM Cookies extension or by using browser developer tools.
imei: Your IMEI created by Zalo. You can get it using browser developer tools: localStorage.getItem('z_uuid') or localStorage.getItem('sh_z_uuid').
userAgent: Your browser user agent. Better be from the same browser you get cookie.
selfListen: Listen for messages sent by yourself. Default is false.
checkUpdate: Check for zca-js update. Default is true.

Listen for new messages

import { Zalo, MessageType } from "zca-js";

const zalo = new Zalo(credentials);
const api = await zalo.login();

api.listener.on("message", (message) => {
    const isPlainText = typeof message.data.content === "string";

    switch (message.type) {
        case MessageType.DirectMessage: {
            if (isPlainText) {
                // received plain text direct message
            }
            break;
        }
        case MessageType.GroupMessage: {
            if (isPlainText) {
                // received plain text group message
            }
            break;
        }
    }
});

api.listener.start();

Note: Only one web listener can be started at a time. If you open Zalo in the browser while the listener is running, the listener will be stopped.

Send a message

import { Zalo, MessageType } from "zca-js";

const zalo = new Zalo(credentials);
const api = await zalo.login();

// Echo bot
api.listener.on("message", (message) => {
    const isPlainText = typeof message.data.content === "string";
    if (message.isSelf || !isPlainText) return;

    switch (message.type) {
        case MessageType.DirectMessage: {
            api.sendMessage(
                {
                    msg: "echo: " + message.data.content,
                    quote: message, // the message object to reply to (optional)
                },
                message.threadId,
                message.type, // MessageType.DirectMessage
            );
            break;
        }
        case MessageType.GroupMessage: {
            api.sendMessage(
                {
                    msg: "echo: " + message.data.content,
                    quote: message, // the message object to reply to (optional)
                },
                message.threadId,
                message.type, // MessageType.GroupMessage
            );
            break;
        }
    }
});

api.listener.start();

Get/Send a sticker

api.getStickers("hello").then(async (stickerIds) => {
    // Get the first sticker
    const stickerObject = await api.getStickersDetail(stickerIds[0]);
    api.sendMessageSticker(
        stickerObject,
        message.threadId,
        message.type, // MessageType.DirectMessage or MessageType.GroupMessage
    );
});