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0.22.6 • Public • Published




Wechaty is a Bot SDK for Wechat Personal Account which can help you create a bot in 6 lines of javascript, with cross-platform support include Linux, Windows, Darwin(OSX/Mac) and Docker.

NPM Version Downloads GitHub stars Docker Pulls TypeScript Greenkeeper badge



"Wechaty is a great solution, I believe there would be much more users recognize it." link
-- @Gcaufy, Tencent Engineer, Author of WePY

-- @xinbenlv, Google Engineer, Founder of

"最好的微信开发库" link
-- @Jarvis, Baidu Engineer

"Wechaty让运营人员更多的时间思考如何进行活动策划、留存用户,商业变现" link
-- @lijiarui, CEO of BotOrange.

"If you know js ... try Chatie/wechaty, it's easy to use."
-- @Urinx Uri Lee, Author of WeixinBot(Python)

See more at Wiki:Voice Of Developer

The World's Shortest ChatBot Code: 6 lines of JavaScript

const { Wechaty } = require('wechaty') // import { Wechaty } from 'wechaty'
Wechaty.instance() // Global Instance
.on('scan', (qrcode, status) => console.log(`Scan QR Code to login: ${status}\n${encodeURIComponent(qrcode)}`))
.on('login',            user => console.log(`User ${user} logined`))
.on('message',       message => console.log(`Message: ${message}`))

Notice: Wechaty requires Node.js version >= 10

This bot can log all messages to the console after login by scan.

You can find more examples from Wiki and Example Directory.


  1. Node.js 10 or above
  2. Global Network Connection



We have a Wechaty starter repository for beginners with the simplest setting. It will be just work out-of-the-box after you clone & npm install & npm start.

If you are new to Wechaty and want to try it the first time, we'd like to strong recommend you starting from this repository, and using it as your starter template for your project.

Otherwise, please saved the above The World's Shortest ChatBot Code: 6 lines of JavaScript example to a file named mybot.js before you can use either NPM or Docker to run it.

1. NPM

NPM Version npm (tag) Downloads

npm init
npm install wechaty
# create your first mybot.js file, you can copy/paste from the above "The World's Shortest ChatBot Code: 6 lines of JavaScript" 
# then: 
node mybot.js

2. Docker

Docker Pulls Docker Layers

Wechaty Docker supports both JavaScript and TypeScript. To use TypeScript just write in TypeScript and save with extension name .ts, no need to compile because we use ts-node to run it.

2.1. Run JavaScript

# for JavaScript 
docker run -ti --rm --volume="$(pwd)":/bot zixia/wechaty mybot.js

2.2. Run TypeScript

# for TypeScript 
docker run -ti --rm --volume="$(pwd)":/bot zixia/wechaty mybot.ts

Learn more about Wechaty Docker at Wiki:Docker.


Read the Full Documentation at Wechaty Official API Reference

1 Class Wechaty

Main bot class.

A Bot is a Wechaty instance that control a specific wechaty-puppet.

Wechaty API Description
event login emit after bot login full successful
event logout emit after the bot log out
event friendship emit when someone sends bot a friend request
event message emit when there's a new message
event room-join emit when anyone join any room
event room-topic emit when someone change room topic
event room-leave emit when anyone leave the room
event room-invite emit when there is a room invitation
event scan emit when the bot needs to show you a QR Code for scanning
start(): Promise<void> start the bot
stop(): Promise<void> stop the bot
logonoff(): boolean bot login status
logout(): Promise<void> logout the bot
userSelf(): ContactSelf get the login-ed bot contact
say(text: string): Promise<void> let bot say text to itself

2 Class Contact

All wechat contacts(friends/non-friends) will be encapsulated as a Contact.

Contact API Description
static find(query: string): Promise<null \| Contact> find contact by name or alias, if the result more than one, return the first one.
static findAll(query: string): Promise<Contact[]> find contact by name or alias
property id: readonly string get contact id
say(text: string): Promise<void> send text, Contact, or file to contact
self(): boolean check if contact is self
name(): string get the name from a contact
alias(): Promise<string> get the alias for a contact
alias(newAlias: string): Promise<void> set or delete the alias for a contact
friend(): boolean check if contact is friend
type(): ContactType return the type of the Contact
provence(): string get the region 'province' from a contact
city(): string get the region 'city' from a contact
avatar(): Promise<FileBox> get avatar picture file stream
gender(): ContactGender get gender from a contact

2.1 Class ContactSelf

Class ContactSelf is extended from Contact.

ContactSelf API Description
avatar(file: FileBox): Promise<void> set avatar for bot
qrcode(): Promise<string> get qrcode for bot
signature(text: string): Promise<void> set signature for bot

2.2 Class Friendship

Send, receive friend request, and friend confirmation events.

Friendship API Description
add(contact: Contact, hello?: string): Promise<void> send a friend invitation to contact
accept(): Promise<void> accept Friend Request
hello(): string get the hello string from a friendship invitation
contact(): Contact get the contact from friendship
type(): FriendshipType return the Friendship Type(unknown, confirm, receive, verify)

3 Class Message

All wechat messages will be encapsulated as a Message.

Message API Description
static find(query: string): Promise<null \| Message> find message in cache and return the first one
static findAll(query: string): Promise<Message[]> find messages in cache, return a message list
from(): Contact get the sender from a message
to(): Contact get the destination of the message
room(): null \| Room get the room from the message.(If the message is not in a room, then will return null)
text(): string get the text content of the message
say(text: string): Promise<void> reply a Text, Media File , or contact message to the sender.
type(): MessageType get the type from the message
self(): boolean check if a message is sent by self
mention(): Contact[] get message mentioned contactList.
mentionSelf(): boolean check if a message is mention self
forward(to: Contact): Promise<void> Forward the received message
age(): number the number of seconds since it has been created
date(): Date the time it was created
toFileBox(): Promise<FileBox> extract the Media File from the Message, and put it into the FileBox.
toContact(): Promise<Contact> get Share Card of the Message

4 Class Room

All wechat rooms(groups) will be encapsulated as a Room.

Room API Description
static create(contactList: Contact[], topic?: string): Promise<Room> create a new room
static find(query: string): Promise<null \| Room> Try to find a room by filter. If get many, return the first one.
static findAll(query: string): Promise<Room[]> Find all contacts in a room
property id: readonly string
event join emit when anyone join any room
event topic emit when someone change room topic
event leave emit when anyone leave the room
event invite emit when receive a room invitation
say(text: string): Promise<void> Send text,media file, contact card, or text with mention @mention contact inside Room
add(contact: Contact): Promise<void> Add contact in a room
del(contact: Contact): Promise<void> Delete a contact from the room
quit(): Promise<void> Bot quit the room itself
topic(): Promise<string> GET topic from the room
topic(newTopic: string): Promise<void> SET topic from the room
announce(text: string): Promise<void> SET/GET announce from the room
qrcode(): Promise<string> Get QR Code of the Room from the room, which can be used as scan and join the room.
alias(contact: Contact): Promise<string> Return contact's roomAlias in the room
has(contact: Contact): Promise<boolean> Check if the room has member contact
memberAll(query?: string): Promise<Contact[]> Find all contacts or with specific name in a room
member(query: string): Promise<null \| Contact> Find all contacts in a room, if get many, return the first one.
owner(): null \| Contact Get room's owner from the room.

4.1 Class RoomInvitation

Accept room invitation

RoomInvitation API Description
accept(): Promise<void> accept Room Invitation
inviter(): Contact get the inviter from room invitation
topic(): Promise<string> get the room topic from room invitation
date(): Promise<Date> the time it was created
age(): Promise<number> the number of seconds since it has been created


Ubuntu Linux/Mac Build Status Travis CentOS Linux Build Status CircleCI Windows Build Status Docker Build Status

Coverage Status Known Vulnerabilities

Wechaty is fully automatically tested by unit and integration tests, with Continious Integration & Continious Deliver(CI/CD) support powered by CI like Travis, Shippable and Appveyor.

To test Wechaty, run:

npm test

Get to know more about the tests from Wiki:Tests



Powered by Wechaty Donate Wechaty

Wechaty Badge

[![Powered by Wechaty](](

Get more embed html/markdown code from Wiki:PoweredByWechaty

Projects Using Wechaty

  1. 一个用CNN深度神剧网络给图片评分的wechaty项目
  2. Relay between Telegram and WeChat
  3. A chat bot managing the HaoShiYou wechat groups run by volunteers of
  4. An interactive chat bot to manage a TODO list
  5. Forward WeChat messages to telegram

Pull Request is welcome to add yours!

Learn more about Projects Using Wechaty at Wiki:PoweredByWechaty


The best practice for running Wechaty Docker/NPM is using a VPS(Virtual Private Server) outside of China, which can save you hours of time because npm install and docker pull will run smoothly without any problem.

The following VPS providers are used by the Wechaty team, and they worked perfectly in production. You can use the following link to get one in minutes. Also, doing this can support Wechaty because you are referred by us.

Location Price Ram Payment Provider
Singapore $5 512MB Paypal DigitalOcean
Japan $5 1GB Paypal Linode
Korea $10 1GB Alipay, Paypal Netdedi



Issue Stats Issue Stats Join the chat at

Howto contribute

Contributions in any form are highly encouraged and welcome! Be it new or improved presets, optimized streaming code or just some cleanup. So start forking!

Contributors List

Code Contributions

If you want to add new features or change the API, please submit an issue first to make sure no one else is already working on the same thing and discuss the implementation and API details with maintainers and users by creating an issue. When everything is settled down, you can submit a pull request.

When fixing bugs, you can directly submit a pull request.

Make sure to add tests for your features and bugfixes and update the documentation (see below) before submitting your code!

Documentation Contributions

You can directly submit pull requests for documentation changes.

Join Us

Wechaty is used in many ChatBot projects by hundreds of developers. If you want to talk with other developers, just scan the following QR Code in WeChat with secret code wechaty, join our Wechaty Developers' Home.

Wechaty Developers' Home

Scan now, because other Wechaty developers want to talk with you too! (secret code: wechaty)


Huan LI <>

profile for zixia on Stack Exchange, a network of free, community-driven Q&A sites

My Story

My daily life/work depends on too much chat on wechat.

  • I almost have 14,000 wechat friends in May 2014, before wechat restricts a total number of friends to 5,000.
  • I almost have 400 wechat rooms, and most of them have more than 400 members.

Can you imagine that? I'm dying...

So a tireless bot working for me 24x7 on wechat, monitoring/filtering the most important message is badly needed. For example, it highlights discussion which contains the KEYWORDS which I want to follow up(especially in a noisy room). ;-)

At last, It's built for my personal study purpose of Automatically Testing.


  • Code & Docs © 2016-2018 Huan LI <>
  • Code released under the Apache-2.0 License
  • Docs released under Creative Commons


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