Baileys - Typescript/Javascript WhatsApp Web API
Important Note
This library was originally a project for CS-2362 at Ashoka University and is in no way affiliated with or endorsed by WhatsApp. Use at your own discretion. Do not spam people with this. We discourage any stalkerware, bulk or automated messaging usage.
Liability and License Notice
Baileys and its maintainers cannot be held liable for misuse of this application, as stated in the MIT license.
The maintainers of Baileys do not in any way condone the use of this application in practices that violate the Terms of Service of WhatsApp. The maintainers of this application call upon the personal responsibility of its users to use this application in a fair way, as it is intended to be used.
- 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 :/
- Baileys supports interacting with the multi-device & web versions of WhatsApp.
- Thank you to @pokearaujo for writing his observations on the workings of WhatsApp Multi-Device. Also, thank you to @Sigalor for writing his observations on the workings of WhatsApp Web and thanks to @Rhymen for the go implementation.
[!IMPORTANT]
The original repository had to be removed by the original author - we now continue development in this repository here.
This is the only official repository and is maintained by the community.
Join the Discord here
Example
Do check out & run example.ts to see an 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 a terminal:
cd path/to/Baileys
yarn
yarn example
Install
Use the stable version:
yarn add @whiskeysockets/baileys
Use the edge version (no guarantee of stability, but latest fixes + features)
yarn add github:WhiskeySockets/Baileys
Then import your code using:
import makeWASocket from '@whiskeysockets/baileys'
Links
Index
Connecting Account
WhatsApp provides a multi-device API that allows Baileys to be authenticated as a second WhatsApp client by scanning a QR code or Pairing Code with WhatsApp on your phone.
[!NOTE]
Here is a simple example of event handling
[!TIP]
You can see all supported socket configs here (Recommended)
Starting socket with QR-CODE
[!TIP]
You can customize browser name if you connect with QR-CODE, with Browser
constant, we have some browsers config, see here
import makeWASocket from '@whiskeysockets/baileys'
const sock = makeWASocket({
browser: Browsers.ubuntu('My App'),
printQRInTerminal: true
})
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!
Starting socket with Pairing Code
[!IMPORTANT]
Pairing Code isn't Mobile API, it's a method to connect Whatsapp Web without QR-CODE, you can connect only with one device, see here
The phone number can't have +
or ()
or -
, only numbers, you must provide country code
import makeWASocket from '@whiskeysockets/baileys'
const sock = makeWASocket({
printQRInTerminal: false
})
if (!sock.authState.creds.registered) {
const number = 'XXXXXXXXXXX'
const code = await sock.requestPairingCode(number)
console.log(code)
}
Receive Full History
- Set
syncFullHistory
as true
- Baileys, by default, use chrome browser config
- If you'd like to emulate a desktop connection (and receive more message history), this browser setting to your Socket config:
const sock = makeWASocket({
...otherOpts,
browser: Browsers.macOS('Desktop'),
syncFullHistory: true
})
Important Notes About Socket Config
Caching Group Metadata (Recommended)
-
If you use baileys for groups, we recommend you to set cachedGroupMetadata
in socket config, you need to implement a cache like this:
const groupCache = new NodeCache({stdTTL: 5 * 60, useClones: false})
const sock = makeWASocket({
cachedGroupMetadata: async (jid) => groupCache.get(jid)
})
sock.ev.on('groups.update', async ([event]) => {
const metadata = await sock.groupMetadata(event.id)
groupCache.set(event.id, metadata)
})
sock.ev.on('group-participants.update', async (event) => {
const metadata = await sock.groupMetadata(event.id)
groupCache.set(event.id, metadata)
})
Improve Retry System & Decrypt Poll Votes
Receive Notifications in Whatsapp App
Saving & Restoring Sessions
You obviously don't want to keep scanning the QR code every time you want to connect.
So, you can load the credentials to log back in:
import makeWASocket, { useMultiFileAuthState } from '@whiskeysockets/baileys'
const { state, saveCreds } = await useMultiFileAuthState('auth_info_baileys')
const sock = makeWASocket({ auth: state })
sock.ev.on('creds.update', saveCreds)
[!IMPORTANT]
useMultiFileAuthState
is a utility function to help save the auth state in a single folder, this function serves as a good guide to help write auth & key states for SQL/no-SQL databases, which I would recommend in any production grade system.
[!NOTE]
When a message is received/sent, due to signal sessions needing updating, the auth keys (authState.keys
) will update. Whenever that happens, you must save the updated keys (authState.keys.set()
is called). Not doing so will prevent your messages from reaching the recipient & cause other unexpected consequences. The useMultiFileAuthState
function automatically takes care of that, but for any other serious implementation -- you will need to be very careful with the key state management.
Handling Events
- Baileys 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.
[!IMPORTANT]
The events are these, it's important you see all events
You can listen to these events like this:
const sock = makeWASocket()
sock.ev.on('messages.upsert', ({ messages }) => {
console.log('got messages', messages)
})
Example to Start
[!NOTE]
This example includes basic auth storage too
import makeWASocket, { DisconnectReason, useMultiFileAuthState } from '@whiskeysockets/baileys'
import { Boom } from '@hapi/boom'
async function connectToWhatsApp () {
const { state, saveCreds } = await useMultiFileAuthState('auth_info_baileys')
const sock = makeWASocket({
auth: state,
printQRInTerminal: true
})
sock.ev.on('connection.update', (update) => {
const { connection, lastDisconnect } = update
if(connection === 'close') {
const shouldReconnect = (lastDisconnect.error as Boom)?.output?.statusCode !== DisconnectReason.loggedOut
console.log('connection closed due to ', lastDisconnect.error, ', reconnecting ', shouldReconnect)
if(shouldReconnect) {
connectToWhatsApp()
}
} else if(connection === 'open') {
console.log('opened connection')
}
})
sock.ev.on('messages.upsert', event => {
for (const m of event.messages) {
console.log(JSON.stringify(m, undefined, 2))
console.log('replying to', m.key.remoteJid)
await sock.sendMessage(m.key.remoteJid!, { text: 'Hello Word' })
}
})
sock.ev.on('creds.update', saveCreds)
}
connectToWhatsApp()
[!IMPORTANT]
In messages.upsert
it's recommended to use a loop like for (const message of event.messages)
to handle all messages in array
Decrypt Poll Votes
- By default poll votes are encrypted and handled in
messages.update
- That's a simple example
sock.ev.on('messages.update', event => {
for(const { key, update } of event) {
if(update.pollUpdates) {
const pollCreation = await getMessage(key)
if(pollCreation) {
console.log(
'got poll update, aggregation: ',
getAggregateVotesInPollMessage({
message: pollCreation,
pollUpdates: update.pollUpdates,
})
)
}
}
}
})
getMessage
is a store implementation (in your end)
Summary of Events on First Connection
- When you connect first time,
connection.update
will be fired requesting you to restart sock - Then, history messages will be received in
messaging.history-set
Implementing a Data Store
- Baileys does not come with a defacto storage for chats, contacts, or messages. However, a simple in-memory implementation has been provided. The store listens for chat updates, new messages, message updates, etc., to always have an up-to-date version of the data.
[!IMPORTANT]
I highly recommend building your own data store, as storing someone's entire chat history in memory is a terrible waste of RAM.
It can be used as follows:
import makeWASocket, { makeInMemoryStore } from '@whiskeysockets/baileys'
const store = makeInMemoryStore({ })
store.readFromFile('./baileys_store.json')
setInterval(() => {
store.writeToFile('./baileys_store.json')
}, 10_000)
const sock = makeWASocket({ })
store.bind(sock.ev)
sock.ev.on('chats.upsert', () => {
console.log('got chats', store.chats.all())
})
sock.ev.on('contacts.upsert', () => {
console.log('got contacts', Object.values(store.contacts))
})
The store also provides some simple functions such as loadMessages
that utilize the store to speed up data retrieval.
Whatsapp IDs Explain
id
is the WhatsApp ID, called jid
too, of the person or group you're sending the message to.
- It must be in the format
[country code][phone number]@s.whatsapp.net
- Example for people: +19999999999@s.whatsapp.net
.
- For groups, it must be in the format 123456789-123345@g.us
. - For broadcast lists, it's
[timestamp of creation]@broadcast
. - For stories, the ID is
status@broadcast
.
Utility Functions
getContentType
, returns the content type for any messagegetDevice
, returns the device from messagemakeCacheableSignalKeyStore
, make auth store more fastdownloadContentFromMessage
, download content from any message
Sending Messages
-
Send all types of messages with a single function
- Here you can see all message contents supported, like text message
- Here you can see all options supported, like quote message
const jid: string
const content: AnyMessageContent
const options: MiscMessageGenerationOptions
sock.sendMessage(jid, content, options)
Non-Media Messages
Text Message
await sock.sendMessage(jid, { text: 'hello word' })
Quote Message (works with all types)
await sock.sendMessage(jid, { text: 'hello word' }, { quoted: message })
Mention User (works with most types)
- @number is to mention in text, it's optional
await sock.sendMessage(
jid,
{
text: '@