Baileys - Typescript/Javascript WhatsApp Web API

Baileys does not require Selenium or any other browser to be interface with WhatsApp Web, it does so directly using a WebSocket. Not running Selenium or Chromimum saves you like half a gig of ram :/

Thank you to @Sigalor for writing his observations on the workings of WhatsApp Web and thanks to @Rhymen for the go implementation.

Baileys is type-safe, extensible and simple to use. If you require more functionality than provided, it'll super easy for you to write an extension. More on this here.

If you're interested in building a WhatsApp bot, you may wanna check out WhatsAppInfoBot and an actual bot built with it, Messcat.

Read the docs here

Example

Do check out & run example.ts to see example usage of the library. The script covers most common use cases. To run the example script, download or clone the repo and then type the following in terminal:

cd path/to/Baileys
npm install
npm run example

Install

Create and cd to your NPM project directory and then in terminal, write:

stable: npm install @adiwajshing/baileys
stabl-ish w quicker fixes & latest features: npm install github:adiwajshing/baileys

Do note, the library will most likely vary if you're using the NPM package, read that here

Then import in your code using:

import { WAConnection } from '@adiwajshing/baileys'

Unit Tests

Baileys also comes with a unit test suite. Simply cd into the Baileys directory & run npm test.

You will require a phone with WhatsApp to test, and a second WhatsApp number to send messages to. Set the phone number you can randomly send messages to in a .env file with [email protected]

Connecting

import { WAConnection } from '@adiwajshing/baileys'

async function connectToWhatsApp () {
    const conn = new WAConnection() 
    
    await conn.connect ()
    console.log ("oh hello " + conn.user.name + " (" + conn.user.id + ")")
    // every chat object has a list of most recent messages
    console.log ("you have " + conn.chats.all().length + " chats")

    const unread = await conn.loadAllUnreadMessages ()
    console.log ("you have " + unread.length + " unread messages")
}
// run in main file
connectToWhatsApp ()
.catch (err => console.log("unexpected error: " + err) ) // catch any errors

If the connection is successful, you will see a QR code printed on your terminal screen, scan it with WhatsApp on your phone and you'll be logged in!

If you don't want to wait for WhatsApp to send all your chats while connecting, you can set the following property to false:

conn.connectOptions.waitForChats = false

Do note, the chats object returned is now a KeyedDB. This is done for the following reasons:

Most applications require chats to be ordered in descending order of time. (KeyedDB does this in log(N) time)
Most applications require pagination of chats (Use chats.paginated())
Most applications require O(1) access to chats via the chat ID. (Use chats.get(jid) with KeyedDB)

Configuring the Connection

You can configure the connection via the connectOptions property. You can even specify an HTTPS proxy. For example:

import { WAConnection, ProxyAgent } from '@adiwajshing/baileys'

const conn = new WAConnecion ()
conn.connectOptions.agent = ProxyAgent ('http://some-host:1234')

await conn.connect ()
console.log ("oh hello " + conn.user.name + "! You connected via a proxy")

The entire WAConnectOptions struct is mentioned here with default values:

conn.connectOptions = {
    /** New QR generation interval, set to null if you don't want to regenerate */
    regenerateQRIntervalMs?: 30_000
    /** fails the connection if no data is received for X seconds */
    maxIdleTimeMs?: 15_000
    /** maximum attempts to connect */
    maxRetries?: 5
    /** should the chats be waited for; 
     * should generally keep this as true, unless you only care about sending & receiving new messages 
     * & don't care about chat history
     * */
    waitForChats?: true
    /** if set to true, the connect only waits for the last message of the chat
     * setting to false, generally yields a faster connect
     */
    waitOnlyForLastMessage?: false
    /** max time for the phone to respond to a connectivity test */
    phoneResponseTime?: 10_000
    /** minimum time between new connections */
    connectCooldownMs?: 3000
    /** agent used for WS connections (could be a proxy agent) */
    agent?: Agent = undefined
    /** agent used for fetch requests -- uploading/downloading media */
    fetchAgent?: Agent = undefined
    /** always uses takeover for connecting */
    alwaysUseTakeover: true
} as WAConnectOptions

Saving & Restoring Sessions

You obviously don't want to keep scanning the QR code every time you want to connect.

So, you can save the credentials to log back in via:

import * as fs from 'fs'

const conn = new WAConnection() 
// this will be called as soon as the credentials are updated
conn.on ('credentials-updated', () => {
    // save credentials whenever updated
    console.log (`credentials updated!`)
    const authInfo = conn.base64EncodedAuthInfo() // get all the auth info we need to restore this session
    fs.writeFileSync('./auth_info.json', JSON.stringify(authInfo, null, '\t')) // save this info to a file
})
await conn.connect() // connect

Then, to restore a session:

const conn = new WAConnection() 
conn.loadAuthInfo ('./auth_info.json') // will load JSON credentials from file
await conn.connect() 
// yay connected without scanning QR
/*
    Optionally, you can load the credentials yourself from somewhere 
    & pass in the JSON object to loadAuthInfo () as well.
*/

If you're considering switching from a Chromium/Puppeteer based library, you can use WhatsApp Web's Browser credentials to restore sessions too:

conn.loadAuthInfo ('./auth_info_browser.json')
await conn.connect() // works the same

See the browser credentials type in the docs.

Note: Upon every successive connection, WA can update part of the stored credentials. Whenever that happens, the credentials-updated event is triggered, and you should probably update your saved credentials upon receiving that event. Not doing so may lead WA to log you out after a few weeks with a 419 error code.

QR Callback

If you want to do some custom processing with the QR code used to authenticate, you can register for the following event:

conn.on('qr', qr => {
    // Now, use the 'qr' string to display in QR UI or send somewhere
}
await conn.connect ()

The QR will auto-regenerate and will fire a new qr event after 30 seconds, if you don't want to regenerate or want to change the re-gen interval:

conn.regenerateQRIntervalMs = null // no QR regen
conn.regenerateQRIntervalMs = 20000 // QR regen every 20 seconds

Handling Events

Baileys now uses the EventEmitter syntax for events. They're all nicely typed up, so you shouldn't have any issues with an Intellisense editor like VS Code.

Also, these events are fired regardless of whether they are initiated by the Baileys client or are relayed from your phone.

/** when the connection has opened successfully */
on (event: 'open', listener: (result: WAOpenResult) => void): this
/** when the connection is opening */
on (event: 'connecting', listener: () => void): this
/** when the connection has closed */
on (event: 'close', listener: (err: {reason?: DisconnectReason | string, isReconnecting: boolean}) => void): this
/** when the connection has closed */
on (event: 'intermediate-close', listener: (err: {reason?: DisconnectReason | string}) => void): this
/** when WA updates the credentials */
on (event: 'credentials-updated', listener: (auth: AuthenticationCredentials) => void): this
/** when a new QR is generated, ready for scanning */
on (event: 'qr', listener: (qr: string) => void): this
/** when the connection to the phone changes */
on (event: 'connection-phone-change', listener: (state: {connected: boolean}) => void): this
/** when a user's presence is updated */
on (event: 'user-presence-update', listener: (update: PresenceUpdate) => void): this
/** when a user's status is updated */
on (event: 'user-status-update', listener: (update: {jid: string, status?: string}) => void): this
/** when a new chat is added */
on (event: 'chat-new', listener: (chat: WAChat) => void): this
/** when a chat is updated (archived, deleted, pinned) */
on (event: 'chat-update', listener: (chat: Partial<WAChat> & { jid: string }) => void): this
/** when a new message is relayed */
on (event: 'message-new', listener: (message: WAMessage) => void): this
/** when a message object itself is updated (receives its media info or is deleted) */
on (event: 'message-update', listener: (message: WAMessage) => void): this
/** when a message's status is updated (deleted, delivered, read, sent etc.) */
on (event: 'message-status-update', listener: (message: WAMessageStatusUpdate) => void): this
/** when participants are added to a group */
on (event: 'group-participants-add', listener: (update: {jid: string, participants: string[], actor?: string}) => void): this
/** when participants are removed or leave from a group */
on (event: 'group-participants-remove', listener: (update: {jid: string, participants: string[], actor?: string}) => void): this
/** when participants are promoted in a group */
on (event: 'group-participants-promote', listener: (update: {jid: string, participants: string[], actor?: string}) => void): this
/** when participants are demoted in a group */
on (event: 'group-participants-demote', listener: (update: {jid: string, participants: string[], actor?: string}) => void): this
/** when the group settings is updated */
on (event: 'group-settings-update', listener: (update: {jid: string, restrict?: string, announce?: string, actor?: string}) => void): this
/** when the group description is updated */
on (event: 'group-description-update', listener: (update: {jid: string, description?: string, actor?: string}) => void): this

Sending Messages

Send like, all types of messages with a single function:

import { MessageType, MessageOptions, Mimetype } from '@adiwajshing/baileys'

const id = '[email protected]' // the WhatsApp ID 
// send a simple text!
conn.sendMessage (id, 'oh hello there', MessageType.text)
// send a location!
conn.sendMessage(id, {degreesLatitude: 24.121231, degreesLongitude: 55.1121221}, MessageType.location)
// send a contact!
const vcard = 'BEGIN:VCARD\n' // metadata of the contact card
            + 'VERSION:3.0\n' 
            + 'FN:Jeff Singh\n' // full name
            + 'ORG:Ashoka Uni;\n' // the organization of the contact
            + 'TEL;type=CELL;type=VOICE;waid=911234567890:+91 12345 67890\n' // WhatsApp ID + phone number
            + 'END:VCARD'
conn.sendMessage(id, {displayname: "Jeff", vcard: vcard}, MessageType.contact)
// send a gif
const buffer = fs.readFileSync("Media/ma_gif.mp4") // load some gif
const options: MessageOptions = {mimetype: Mimetype.gif, caption: "hello!"} // some metadata & caption
conn.sendMessage(id, buffer, MessageType.video, options)
// send an audio file
const buffer = fs.readFileSync("Media/audio.mp3") // can send mp3, mp4, & ogg -- but for mp3 files the mimetype must be set to ogg
const options: MessageOptions = {mimetype: Mimetype.ogg} // some metadata (can't have caption in audio)
conn.sendMessage(id, buffer, MessageType.audio, options)

To note:

id is the WhatsApp ID of the person or group you're sending the message to.
- It must be in the format [country code][phone number]@s.whatsapp.net, for example [email protected] for people. For groups, it must be in the format [email protected].
For media messages, the thumbnail can be generated automatically for images & stickers. Thumbnails for videos can also be generated automatically, though, you need to have ffmpeg installed on your system.

MessageOptions: some extra info about the message. It can have the following optional values:

const info: MessageOptions = {
    quoted: quotedMessage, // the message you want to quote
    contextInfo: { forwardingScore: 2, isForwarded: true }, // some random context info 
    // (can show a forwarded message with this too)
    timestamp: Date(), // optional, if you want to manually set the timestamp of the message
    caption: "hello there!", // (for media messages) the caption to send with the media (cannot be sent with stickers though)
    thumbnail: "23GD#4/==", /*  (for location & media messages) has to be a base 64 encoded JPEG if you want to send a custom thumb, 
                                or set to null if you don't want to send a thumbnail.
                                Do not enter this field if you want to automatically generate a thumb
                            */
    mimetype: Mimetype.pdf, /* (for media messages) specify the type of media (optional for all media types except documents),
                                    import {Mimetype} from '@adiwajshing/baileys'
                            */
    filename: 'somefile.pdf', // (for media messages) file name for the media
    /* will send audio messages as voice notes, if set to true */
    ptt: true,
    // will detect links & generate a link preview automatically (default true)
    detectLinks: true
}

Forwarding Messages

const messages = await conn.loadConversation ('[email protected]', 1)
const message = messages[0] // get the last message from this conversation
await conn.forwardMessage ('[email protected]', message) // WA forward the message!

Reading Messages

const id = '[email protected]'
const messageID = 'AHASHH123123AHGA' // id of the message you want to read

await conn.chatRead (id) // mark all messages in chat as read (equivalent of opening a chat in WA)
await conn.chatRead (id, 'unread') // mark the chat as unread

The message ID is the unique identifier of the message that you are marking as read. On a WAMessage, the messageID can be accessed using messageID = message.key.id.

Update Presence

import { Presence } from '@adiwajshing/baileys'
await conn.updatePresence(id, Presence.available)

This lets the person/group with id know whether you're online, offline, typing etc. where presence can be one of the following:

export enum Presence {
    available = 'available', // "online"
    composing = 'composing', // "typing..."
    recording = 'recording', // "recording..."
}

The presence expires after about 10 seconds.

Downloading Media Messages

If you want to save the media you received

import { MessageType } from '@adiwajshing/baileys'
conn.on ('message-new', async m => {
    if (!m.message) return // if there is no text or media message
    const messageType = Object.keys (m.message)[0]// get what type of message it is -- text, image, video
    // if the message is not a text message
    if (messageType !== MessageType.text && messageType !== MessageType.extendedText) {
        const buffer = await conn.downloadMediaMessage(m) // to decrypt & use as a buffer
        
        const savedFilename = await conn.downloadAndSaveMediaMessage (m) // to decrypt & save to file
        console.log(m.key.remoteJid + " sent media, saved at: " + savedFilename)
    }
}

Deleting Messages

const jid = '[email protected]' // can also be a group
const response = await conn.sendMessage (jid, 'hello!', MessageType.text) // send a message

await conn.deleteMessage (jid, {id: response.messageID, remoteJid: jid, fromMe: true}) // will delete the sent message for everyone!
await conn.clearMessage (jid, {id: response.messageID, remoteJid: jid, fromMe: true}) // will delete the sent message for only you!

Modifying Chats

const jid = '[email protected]' // can also be a group
await conn.modifyChat (jid, ChatModification.archive) // archive chat
await conn.modifyChat (jid, ChatModification.unarchive) // unarchive chat

const response = await conn.modifyChat (jid, ChatModification.pin) // pin the chat
await conn.modifyChat (jid, ChatModification.unpin) // unpin it

await conn.modifyChat (jid, ChatModification.mute, 8*60*60*1000) // mute for 8 hours
setTimeout (() => {
    conn.modifyChat (jid, ChatModification.unmute)
}, 5000) // unmute after 5 seconds

await conn.deleteChat (jid) // will delete the chat (can be a group or broadcast list as well)

Note: to unmute or unpin a chat, one must pass the timestamp of the pinning or muting. This is returned by the pin & mute functions. This is also available in the WAChat objects of the respective chats, as a mute or pin property.

Misc

To load chats in a paginated manner

const {chats, cursor} = await conn.loadChats (25)
if (cursor) {
    const moreChats = await conn.loadChats (25, cursor) // load the next 25 chats
}

To check if a given ID is on WhatsApp

const id = '[email protected]'
const exists = await conn.isOnWhatsApp (id)
console.log (`${id} ${exists ? " exists " : " does not exist"} on WhatsApp`)

To query chat history on a group or with someone

// query the last 25 messages (replace 25 with the number of messages you want to query)
const messages = await conn.loadMessages ("[email protected]", 25)
console.log("got back " + messages.length + " messages")

You can also load the entire conversation history if you want

await conn.loadAllMessages ("[email protected]", message => console.log("Loaded message with ID: " + message.key.id))
console.log("queried all messages") // promise resolves once all messages are retreived

To get the status of some person

const status = await conn.getStatus ("[email protected]") // leave empty to get your own status
console.log("status: " + status)

To get the display picture of some person/group

const ppUrl = await conn.getProfilePicture ("[email protected]") // leave empty to get your own
console.log("download profile picture from: " + ppUrl)

To change your display picture or a group's

const jid = '[email protected]' // can be your own too
const img = fs.readFileSync ('new-profile-picture.jpeg') // can be PNG also
await conn.updateProfilePicture (jid, img)

To get someone's presence (if they're typing, online)

// the presence update is fetched and called here
conn.on ('user-presence-update', json => console.log(json.id + " presence is " + json.type))
await conn.requestPresenceUpdate ("[email protected]") // request the update

To search through messages

const response = await conn.searchMessages ('so cool', null, 25, 1) // search in all chats
console.log (`got ${response.messages.length} messages in search`)

const response2 = await conn.searchMessages ('so cool', '[email protected]', 25, 1) // search in given chat

Of course, replace xyz with an actual ID.

Groups

To create a group

// title & participants
const group = await conn.groupCreate ("My Fab Group", ["[email protected]", "[email protected]"])
console.log ("created group with id: " + group.gid)
conn.sendMessage(group.gid, "hello everyone", MessageType.extendedText) // say hello to everyone on the group

To add people to a group

// id & people to add to the group (will throw error if it fails)
const response = await conn.groupAdd ("[email protected]", ["[email protected]", "[email protected]"])

To make/demote admins on a group

// id & people to make admin (will throw error if it fails)
await conn.groupMakeAdmin ("[email protected]", ["[email protected]", "[email protected]"])
await conn.groupDemoteAdmin ("[email protected]", ["[email protected]", "[email protected]"]) // demote admins

To change group settings

import { GroupSettingChange } from '@adiwajshing/baileys'
// only allow admins to send messages
await conn.groupSettingChange ("[email protected]", GroupSettingChange.messageSend, true)
// allow everyone to modify the group's settings -- like display picture etc.
await conn.groupSettingChange ("[email protected]", GroupSettingChange.settingChange, false)
// only allow admins to modify the group's settings
await conn.groupSettingChange ("[email protected]", GroupSettingChange.settingChange, true)

To leave a group

await conn.groupLeave ("[email protected]") // (will throw error if it fails)

To get the invite code for a group

const code = await conn.groupInviteCode ("[email protected]")
console.log("group code: " + code)

To query the metadata of a group

const metadata = await conn.groupMetadata ("[email protected]") 
console.log(json.id + ", title: " + json.subject + ", description: " + json.desc)

// Or if you've left the group -- call this
const metadata2 = await conn.groupMetadataMinimal ("[email protected]")

Broadcast Lists & Stories

You can send messages to broadcast lists the same way you send messages to groups & individual chats.
Unfortunately, WA Web does not support creating broadcast lists right now but you can still delete them.
Broadcast IDs are in the format 12345678@broadcast

To query a broadcast list's recipients & name:

const bList = await conn.getBroadcastListInfo ("1234@broadcast")
console.log (`list name: ${bList.name}, recps: ${bList.recipients}`)

Writing Custom Functionality

Baileys is written, keeping in mind, that you may require other custom functionality. Hence, instead of having to fork the project & re-write the internals, you can simply write extensions in your own code.

First, enable the logging of unhandled messages from WhatsApp by setting

conn.logger.level = 'unhandled'

This will enable you to see all sorts of messages WhatsApp sends in the console. Some examples:

Functionality to track of the battery percentage of your phone. You enable logging and you'll see a message about your battery pop up in the console: s22, ["action",null,[["battery",{"live":"false","value":"52"},null]]]

You now know what a battery update looks like. It'll have the following characteristics.
- Given const bMessage = ["action",null,[["battery",{"live":"false","value":"52"},null]]]
- bMessage[0] is always "action"
- bMessage[1] is always null
- bMessage[2][0][0] is always "battery"
Hence, you can register a callback for an event using the following:
```
conn.registerCallback (["action", null, "battery"], json => {
    const batteryLevelStr = json[2][0][1].value
    const batterylevel = parseInt (batteryLevelStr)
    console.log ("battery level: " + batterylevel + "%")
})
```
This callback will be fired any time a message is received matching the following criteria: message [0] === "action" && message [1] === null && message[2][0][0] === "battery"
Functionality to keep track of the pushname changes on your phone. You enable logging and you'll see an unhandled message about your pushanme pop up like this: s24, ["Conn",{"pushname":"adiwajshing"}]

You now know what a pushname update looks like. It'll have the following characteristics.
- Given const pMessage = ["Conn",{"pushname":"adiwajshing"}]
- pMessage[0] is always "Conn"
- pMessage[1] always has the key "pushname"
- pMessage[2] is always undefined
Following this, one can implement the following callback:
```
conn.registerCallback (["Conn", "pushname"], json => {
    const pushname = json[1].pushname
    conn.user.name = pushname // update on client too
    console.log ("Name updated: " + pushname)
})
```
This callback will be fired any time a message is received matching the following criteria: message [0] === "Conn" && message [1].pushname

A little more testing will reveal that almost all WhatsApp messages are in the format illustrated above. Note: except for the first parameter (in the above cases, "action" or "Conn"), all the other parameters are optional.

Note

This library was originally a project for CS-2362 at Ashoka University and is in no way affiliated with WhatsApp. Use at your own discretion. Do not spam people with this.

Name		Name	Last commit message	Last commit date
Latest commit History 324 Commits
.github		.github
Example		Example
Media		Media
WAMessage		WAMessage
src		src
.eslintrc.js		.eslintrc.js
.gitattributes		.gitattributes
.gitignore		.gitignore
.prettierrc.js		.prettierrc.js
LICENSE.md		LICENSE.md
README.md		README.md
package.json		package.json
tsconfig.json		tsconfig.json
typedoc.json		typedoc.json
yarn.lock		yarn.lock

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Baileys - Typescript/Javascript WhatsApp Web API

Example

Install

Unit Tests

Connecting

Configuring the Connection

Saving & Restoring Sessions

QR Callback

Handling Events

Sending Messages

Forwarding Messages

Reading Messages

Update Presence

Downloading Media Messages

Deleting Messages

Modifying Chats

Misc

Groups

Broadcast Lists & Stories

Writing Custom Functionality

Note

About

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Repository files navigation

Baileys - Typescript/Javascript WhatsApp Web API

Example

Install

Unit Tests

Connecting

Configuring the Connection

Saving & Restoring Sessions

QR Callback

Handling Events

Sending Messages

Forwarding Messages

Reading Messages

Update Presence

Downloading Media Messages

Deleting Messages

Modifying Chats

Misc

Groups

Broadcast Lists & Stories

Writing Custom Functionality

Note

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