WCA is an FCA-style WhatsApp bot framework built on top of Baileys.
If you know how to write a Facebook Messenger bot using stfca, you already know WCA.

📦 NPM • 🤖 Example Bot • 🐛 Issues • 💬 Support Group • 📸 Instagram

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✨ Features

Category	Feature
🔌 Connection	QR Code login · Pairing Code (no phone scan) · Auto-reconnect
💬 Messaging	Send text · Reply/quote · Mentions · Emoji reactions · Delete for everyone · Edit message · Send poll
📎 Media	Image · Video · Audio · PTT/Voice · Document · Sticker · GIF · Location
👥 Groups	Create · Leave · Add/Kick · Promote/Demote · Rename · Description · Invite link · Settings · Pin message · Get all groups
👤 Profile	Get/Set profile picture · Status text · Display name · Block/Unblock · Get DM info
📡 Events	Messages · Reactions · Delete events · Group changes · Typing presence · Calls
💬 Chats	Get all chats · Get all contacts · Archive/Unarchive · Mute/Unmute
🔄 Updates	Auto-update on startup — always keeps itself current

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📋 Requirements

• Node.js ≥ 18.x (LTS recommended — download)
• npm ≥ 8.x
• A WhatsApp account

# Check your versions
node -v
npm -v

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📦 Installation

npm install @sheikhtamim/wca

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🚀 Quick Start

QR Code login

const wca = require('@sheikhtamim/wca');

wca({ authFolder: './wca_auth' }, (err, api) => {
    if (err) return console.error(err);

    api.listen((err, msg) => {
        if (err || !msg || msg.type !== 'message') return;
        if (msg.body === '!ping') {
            api.sendMessage('🏓 Pong!', msg.threadID);
        }
    });
});

Pairing Code login (no QR scan needed)

const wca = require('@sheikhtamim/wca');

wca({
    authFolder:     './wca_auth',
    phoneNumber:    '8801xxxxxxxxx',   // international format, no +
    usePairingCode: true,
}, (err, api) => {
    if (err) return console.error(err);
    console.log('Connected as', api.getCurrentUserID());

    api.listen((err, msg) => {
        if (!msg || msg.type !== 'message') return;
        if (msg.body === '!ping') {
            api.sendMessage('🏓 Pong!', msg.threadID);
        }
    });
});

When the pairing code prints in your console:

1. Open WhatsApp → ⋮ Menu → Linked Devices
2. Tap Link a device → Link with phone number instead
3. Enter the code shown in your terminal

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⚙️ Options

wca({
    authFolder:       './wca_auth',   // auth state folder  (default: './wca_auth')
    phoneNumber:      '628xxx',       // for pairing code
    usePairingCode:   true,           // force pairing code flow
    skipUpdateCheck:  false,          // set true to skip auto-update on start

    globalOptions: {
        selfListen:            false,   // process own sent messages
        selfListenEvent:       false,   // emit own messages to listen()
        listenEvents:          true,    // emit group / call / presence events
        updatePresence:        false,   // emit all presence updates
        listenTyping:          false,   // emit only typing (composing/paused) events
        autoMarkDelivery:      false,   // auto-read every received message
        autoReconnect:         true,    // reconnect on unexpected drop
        emitReady:             false,   // emit { type:'ready' } on connection open
        enableTypingIndicator: false,   // show typing before every sendMessage
        typingDuration:        3000,    // typing indicator duration ms
        logLevel:              'error', // 'silent' | 'error' | 'warn' | 'info' | 'debug'
        online:                true,    // appear online when connected
    },
}, callback);

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🔄 Auto-Update (built-in)

WCA automatically checks for updates every time it starts and installs the latest version before connecting. No manual setup needed — just run your bot normally.

// WCA auto-updates itself. No extra code required.
wca({ authFolder: './wca_auth' }, (err, api) => { ... });

To disable auto-update (not recommended):

wca({ skipUpdateCheck: true, authFolder: './wca_auth' }, (err, api) => { ... });

You can also call it manually:

const { checkForWCAUpdate } = require('@sheikhtamim/wca/checkUpdate');
await checkForWCAUpdate();

// Options:
await checkForWCAUpdate({
    autoUpdate:   true,    // install the update   (default: true)
    silent:       false,   // suppress console log (default: false)
    exitOnUpdate: true,    // exit(2) so pm2/nodemon restarts (default: true)
});

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📨 Message Event Format

{
    type:          'message',
    body:          'Hello!',
    threadID:      '628xxx@s.whatsapp.net',   // DM  OR  120363xxx@g.us  (group)
    senderID:      '628xxx@s.whatsapp.net',   // always a phone JID (LIDs resolved)
    author:        '628xxx@s.whatsapp.net',   // alias for senderID
    messageID:     'XXXXXXXXXXXXXXXXXX',
    isGroup:       false,
    isSingleUser:  true,
    fromMe:        false,
    timestamp:     1716900000,
    attachments:   [ { type:'image', mimetype:'image/jpeg', caption:'...', ... } ],
    mentions:      [ '628yyy@s.whatsapp.net' ],
    replyToMessage: {
        messageID: 'YYYYY',
        senderID:  '628xxx@s.whatsapp.net',
        body:      'quoted text',
        attachments: [],
    },
    location:     null,   // { latitude, longitude, name, address } if location msg
    poll:         null,   // { name, options, selectableCount }     if poll msg
    quoteOptions: { quoted: <rawWAMessage> },  // pass directly to sendMessage for reply
    args:         ['!ping'],    // body.split(' ')
    raw:          <WAMessage>,  // raw Baileys object
}

Other event types

// Emoji reaction
{ type: 'message_reaction', emoji: '👍', reactionKey: { id, remoteJid, fromMe }, senderID, threadID, ... }

// Someone deleted a message
{ type: 'message_unsend', logMessageType: 'log:unsend', deletedMessageID, senderID, threadID, ... }

// Group participant change
{ type: 'event', logMessageType: 'log:subscribe'|'log:unsubscribe'|'log:thread-admins',
  participants: ['628xxx@s.whatsapp.net'], author, threadID, logMessageData: { action, ... } }

// Group metadata change
{ type: 'group_update', logMessageType: 'log:thread-name'|'log:thread-image'|'log:thread-description'|...,
  threadID, author, logMessageData: { value } }

// Typing / presence
{ type: 'presence', userID, threadID, presence: 'composing'|'paused'|'available'|'unavailable', isTyping }

// Incoming call
{ type: 'call', from, isVideo, isGroup, status }

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📚 API Reference

Messaging

api.sendMessage(msg, threadID, [cb])        // text, attachment, reply, mention
api.sendImage(url, threadID, caption, opts)
api.sendVideo(url, threadID, caption, opts)
api.sendAudio(url, threadID, opts)
api.sendPTT(url, threadID, opts)            // voice note
api.sendDocument(url, threadID, caption, opts)
api.sendSticker(url, threadID, opts)
api.sendGif(url, threadID, caption, opts)
api.sendLocation(threadID, lat, lon, opts)
api.sendTypingIndicator(bool, threadID)
api.markAsRead(threadID, senderID, [ids])
api.reactToMessage(threadID, msgID, emoji)
api.deleteMessage(threadID, msgID, forAll)
api.editMessage(threadID, msgID, newText)   // edit a sent message
api.sendPoll(threadID, question, options, [opts])  // send a poll
api.pinMessage(threadID, msgID)             // pin a message
api.unpinMessage(threadID, msgID)           // unpin a message
api.downloadMedia(rawMsg)                   // → Buffer

Quoted reply

// Using quoteOptions from the incoming event (best):
api.sendMessage('Got it!', msg.threadID, null, { replyToMessage: msg.quoteOptions.quoted });

// Or pass the raw message directly:
api.sendMessage({ body: 'Reply!', replyToMessage: msg.raw }, msg.threadID);

Groups

api.getGroupInfo(threadID)                  // full group info (for DB saving)
api.getAllGroups()                           // all groups the bot is in
api.getGroupAdmins(threadID)
api.getGroupInviteLink(threadID)
api.groupRevokeInvite(threadID)
api.groupAcceptInvite(code)
api.addUserToGroup(threadID, [userIDs])
api.kickUser(threadID, [userIDs])
api.createGroup(name, [participantIDs])
api.leaveGroup(threadID)
api.promoteAdmin(threadID, [userIDs])
api.demoteAdmin(threadID, [userIDs])
api.changeGroupSubject(threadID, name)
api.changeGroupDescription(threadID, desc)
api.groupSettingUpdate(threadID, setting)   // 'announcement'|'not_announcement'|'locked'|'unlocked'

Profile & user

api.getProfilePicture(userID, type)
api.getUserInfo([userIDs])
api.getDMInfo(userID)                       // full DM user info (for DB saving)
api.getContacts()                           // all contacts
api.getChats()                              // all chats / conversations
api.fetchStatus(userID)
api.updateProfilePicture(media)
api.updateProfileStatus(text)
api.updateProfileName(name)
api.blockContact(userID)
api.unblockContact(userID)
api.sendPresenceUpdate(type, threadID)      // 'available'|'unavailable'|'composing'|'paused'
api.getCurrentUserID()                      // own JID
api.sock                                    // raw Baileys socket

Chats

api.archiveChat(threadID, [archive=true])   // archive a chat
api.unarchiveChat(threadID)                 // unarchive a chat
api.muteChat(threadID, [durationMs])        // mute a chat  (default 8 hours)
api.unmuteChat(threadID)                    // unmute a chat

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🗄️ Group / DM Info for Database

Get full group info (GC)

const info = await api.getGroupInfo('120363xxx@g.us');
// Returns:
// {
//   threadID, name, description, owner, creation,
//   size, adminIDs, participantIDs,
//   participants: [{ userID, isAdmin, isSuperAdmin }],
//   announcement, restrict, ephemeralDuration, raw
// }

Get all groups the bot is in

const groups = await api.getAllGroups();
groups.forEach(g => console.log(g.name, g.size));

Get full DM user info

const info = await api.getDMInfo('628xxx@s.whatsapp.net');
// Returns:
// {
//   userID, phone, name, status, statusTimestamp,
//   profilePicture, isBusiness, businessProfile, isMe, raw
// }

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🤖 Full Bot Example

const wca = require('@sheikhtamim/wca');

// WCA auto-updates itself before connecting — no extra code needed.
wca({
    authFolder:     './wca_auth',
    phoneNumber:    '8801xxxxxxxxx',
    usePairingCode: true,
    globalOptions:  {
        listenEvents:  true,
        selfListen:    false,
        autoReconnect: true,
    },
}, (err, api) => {
    if (err) return console.error('WCA error:', err);
    console.log('Bot ready:', api.getCurrentUserID());

    api.listen(async (err, msg) => {
        if (err) return;
        if (!msg || msg.type !== 'message' || msg.fromMe) return;

        const { body, threadID } = msg;
        if (!body.startsWith('!')) return;

        const [cmd, ...args] = body.slice(1).split(' ');

        switch (cmd.toLowerCase()) {
            case 'ping':
                await api.sendMessage('🏓 Pong!', threadID);
                break;

            case 'poll':
                await api.sendPoll(threadID, 'Favourite colour?', ['Red', 'Blue', 'Green']);
                break;

            case 'gcinfo':
                if (msg.isGroup) {
                    const info = await api.getGroupInfo(threadID);
                    await api.sendMessage(
                        `*${info.name}*\nMembers: ${info.size}\nAdmins: ${info.adminIDs.length}`,
                        threadID
                    );
                }
                break;

            case 'dminfo':
                if (!msg.isGroup) {
                    const info = await api.getDMInfo(msg.senderID);
                    await api.sendMessage(
                        `Name: ${info.name || 'Unknown'}\nStatus: ${info.status || 'None'}`,
                        threadID
                    );
                }
                break;

            case 'react':
                await api.reactToMessage(threadID, msg.messageID, '👍');
                break;

            case 'reply':
                await api.sendMessage(
                    { body: 'This is a reply!', replyToMessage: msg.raw },
                    threadID
                );
                break;

            case 'image':
                await api.sendImage('https://picsum.photos/800/600', threadID, 'Test image');
                break;
        }
    });
});

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📂 Project Structure

wca/
 ├── index.js              ← Main entry  wca(options, callback)
 ├── utils.js              ← JID helpers, LID resolver, event formatter
 ├── checkUpdate.js        ← Auto-update checker (runs on every startup)
 └── src/                  ← One file per feature
     ├── listenMqtt.js
     ├── sendMessage.js
     ├── sendMedia.js
     ├── sendPoll.js
     ├── editMessage.js
     ├── pinMessage.js
     ├── sendTypingIndicator.js
     ├── sendReadReceipt.js
     ├── sendLocation.js
     ├── sendPresenceUpdate.js
     ├── reactToMessage.js
     ├── deleteMessage.js
     ├── downloadMedia.js
     ├── getGroupInfo.js
     ├── getAllGroups.js
     ├── getGroupAdmins.js
     ├── getGroupInviteLink.js
     ├── groupRevokeInvite.js
     ├── groupAcceptInvite.js
     ├── groupSettingUpdate.js
     ├── addUserToGroup.js
     ├── kickUser.js
     ├── createGroup.js
     ├── leaveGroup.js
     ├── setGroupAdmin.js
     ├── changeGroupSubject.js
     ├── changeGroupDescription.js
     ├── getProfilePicture.js
     ├── getUserInfo.js
     ├── getDMInfo.js
     ├── getContacts.js
     ├── getChats.js
     ├── archiveChat.js
     ├── muteChat.js
     ├── fetchStatus.js
     ├── updateProfilePicture.js
     ├── updateProfileStatus.js
     ├── updateProfileName.js
     ├── blockContact.js
     ├── sendButtons.js
     └── getAppState.js

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🧠 LID Resolution (Delta System)

WhatsApp internally uses LID (Linked Identity) JIDs — e.g. 186393124970625@lid — which are opaque internal IDs that differ from phone numbers. WCA automatically resolves these to real @s.whatsapp.net JIDs using Baileys' contact store.

• msg.senderID → always a phone JID (628xxx@s.whatsapp.net)
• msg.threadID → group @g.us or phone JID for DMs
• Device suffixes (628xxx:5@s.whatsapp.net) are stripped automatically

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🔗 Links

📦 NPM package	@sheikhtamim/wca
🧩 WCA source	github.com/sheikhtamimlover/wca
🤖 Example bot	github.com/sheikhtamimlover/ST_WhatsappBot
💬 Support Group	Join WCA Support GC
📸 Instagram	instagram.com/sheikh.tamim_lover
📞 Contact	wa.me/8801600203673

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Made with ❤️ by Sheikh Tamim