# Add Whatsapp

> Add WhatsApp as a channel. Can replace other channels entirely or run alongside them. Uses QR code or pairing code for authentication.

- Skill: `majiayu000/add-whatsapp-2` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds add majiayu000/add-whatsapp-2`
- Raw SKILL.md: https://api.skillmd.com/api/skills/majiayu000/add-whatsapp-2/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Integrations & APIs
- Author: majiayu000 (https://skillmd.com/u/majiayu000)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/majiayu000/add-whatsapp-2

---


# Add WhatsApp Channel

This skill adds WhatsApp support to MatClaw. It installs the WhatsApp channel code, dependencies, and guides through authentication, registration, and configuration.

## Phase 1: Pre-flight

### Check current state

Check if WhatsApp is already configured. If `store/auth/` exists with credential files, skip to Phase 4 (Registration) or Phase 5 (Verify).

```bash
ls store/auth/creds.json 2>/dev/null && echo "WhatsApp auth exists" || echo "No WhatsApp auth"
```

### Detect environment

Check whether the environment is headless (no display server):

```bash
[[ -z "$DISPLAY" && -z "$WAYLAND_DISPLAY" && "$OSTYPE" != darwin* ]] && echo "IS_HEADLESS=true" || echo "IS_HEADLESS=false"
```

### Ask the user

Use `AskUserQuestion` to collect configuration. **Adapt auth options based on environment:**

If IS_HEADLESS=true AND not WSL → AskUserQuestion: How do you want to authenticate WhatsApp?
- **Pairing code** (Recommended) - Enter a numeric code on your phone (no camera needed, requires phone number)
- **QR code in terminal** - Displays QR code in the terminal (can be too small on some displays)

Otherwise (macOS, desktop Linux, or WSL) → AskUserQuestion: How do you want to authenticate WhatsApp?
- **QR code in browser** (Recommended) - Opens a browser window with a large, scannable QR code
- **Pairing code** - Enter a numeric code on your phone (no camera needed, requires phone number)
- **QR code in terminal** - Displays QR code in the terminal (can be too small on some displays)

If they chose pairing code:

AskUserQuestion: What is your phone number? (Include country code without +, e.g., 1234567890)

## Phase 2: Verify Code

Apply the skill to install the WhatsApp channel code and dependencies:

```bash
npx tsx scripts/apply-skill.ts .claude/skills/add-whatsapp
```

Verify the code was placed correctly:

```bash
test -f src/channels/whatsapp.ts && echo "WhatsApp channel code present" || echo "ERROR: WhatsApp channel code missing — re-run skill apply"
```

### Verify dependencies

```bash
node -e "require('@whiskeysockets/baileys')" 2>/dev/null && echo "Baileys installed" || echo "Installing Baileys..."
```

If not installed:

```bash
npm install @whiskeysockets/baileys qrcode qrcode-terminal
```

### Validate build

```bash
npm run build
```

Build must be clean before proceeding.

## Phase 3: Authentication

### Clean previous auth state (if re-authenticating)

```bash
rm -rf store/auth/
```

### Run WhatsApp authentication

For QR code in browser (recommended):

```bash
npx tsx setup/index.ts --step whatsapp-auth -- --method qr-browser
```

(Bash timeout: 150000ms)

Tell the user:

> A browser window will open with a QR code.
>
> 1. Open WhatsApp > **Settings** > **Linked Devices** > **Link a Device**
> 2. Scan the QR code in the browser
> 3. The page will show "Authenticated!" when done

For QR code in terminal:

```bash
npx tsx setup/index.ts --step whatsapp-auth -- --method qr-terminal
```

Tell the user to run `npm run auth` in another terminal, then:

> 1. Open WhatsApp > **Settings** > **Linked Devices** > **Link a Device**
> 2. Scan the QR code displayed in the terminal

For pairing code:

```bash
npx tsx setup/index.ts --step whatsapp-auth -- --method pairing-code --phone <their-phone-number>
```

(Bash timeout: 150000ms). Display PAIRING_CODE from output.

Tell the user:

> A pairing code will appear. **Enter it within 60 seconds** — codes expire quickly.
>
> 1. Open WhatsApp > **Settings** > **Linked Devices** > **Link a Device**
> 2. Tap **Link with phone number instead**
> 3. Enter the code immediately
>
> If the code expires, re-run the command — a new code will be generated.

**If failed:** qr_timeout → re-run. logged_out → delete `store/auth/` and re-run. 515 → re-run. timeout → ask user, offer retry.

### Verify authentication succeeded

```bash
test -f store/auth/creds.json && echo "Authentication successful" || echo "Authentication failed"
```

### Configure environment

Channels auto-enable when their credentials are present — WhatsApp activates when `store/auth/creds.json` exists.

Sync to container environment:

```bash
mkdir -p data/env && cp .env data/env/env
```

## Phase 4: Registration

### Configure trigger and channel type

Get the bot's WhatsApp number: `node -e "const c=require('./store/auth/creds.json');console.log(c.me.id.split(':')[0].split('@')[0])"`

AskUserQuestion: Is this a shared phone number (personal WhatsApp) or a dedicated number (separate device)?
- **Shared number** - Your personal WhatsApp number (recommended: use self-chat or a solo group)
- **Dedicated number** - A separate phone/SIM for the assistant

AskUserQuestion: What trigger word should activate the assistant?
- **@Andy** - Default trigger
- **@Claw** - Short and easy
- **@Claude** - Match the AI name

AskUserQuestion: What should the assistant call itself?
- **Andy** - Default name
- **Claw** - Short and easy
- **Claude** - Match the AI name

AskUserQuestion: Where do you want to chat with the assistant?

**Shared number options:**
- **Self-chat** (Recommended) - Chat in your own "Message Yourself" conversation
- **Solo group** - A group with just you and the linked device
- **Existing group** - An existing WhatsApp group

**Dedicated number options:**
- **DM with bot** (Recommended) - Direct message the bot's number
- **Solo group** - A group with just you and the bot
- **Existing group** - An existing WhatsApp group

### Get the JID

**Self-chat:** JID = your phone number with `@s.whatsapp.net`. Extract from auth credentials:

```bash
node -e "const c=JSON.parse(require('fs').readFileSync('store/auth/creds.json','utf-8'));console.log(c.me?.id?.split(':')[0]+'@s.whatsapp.net')"
```

**DM with bot:** Ask for the bot's phone number. JID = `NUMBER@s.whatsapp.net`

**Group (solo, existing):** Run group sync and list available groups:

```bash
npx tsx setup/index.ts --step groups
npx tsx setup/index.ts --step groups --list
```

The output shows `JID|GroupName` pairs. Present candidates as AskUserQuestion (names only, not JIDs).

### Register the chat

```bash
npx tsx setup/index.ts --step register \
  --jid "<jid>" \
  --name "<chat-name>" \
  --trigger "@<trigger>" \
  --folder "whatsapp_main" \
  --channel whatsapp \
  --assistant-name "<name>" \
  --is-main \
  --no-trigger-required  # Only for main/self-chat
```

For additional groups (trigger-required):

```bash
npx tsx setup/index.ts --step register \
  --jid "<group-jid>" \
  --name "<group-name>" \
  --trigger "@<trigger>" \
  --folder "whatsapp_<group-name>" \
  --channel whatsapp
```

## Phase 5: Verify

### Build and restart

```bash
npm run build
```

Restart the service:

```bash
# macOS (launchd)
launchctl kickstart -k gui/$(id -u)/com.matclaw

# Linux (systemd)
systemctl --user restart matclaw

# Linux (nohup fallback)
bash start-matclaw.sh
```

### Test the connection

Tell the user:

> Send a message to your registered WhatsApp chat:
> - For self-chat / main: Any message works
> - For groups: Use the trigger word (e.g., "@Andy hello")
>
> The assistant should respond within a few seconds.

### Check logs if needed

```bash
tail -f logs/matclaw.log
```

## Troubleshooting

### QR code expired

QR codes expire after ~60 seconds. Re-run the auth command:

```bash
rm -rf store/auth/ && npx tsx src/whatsapp-auth.ts
```

### Pairing code not working

Codes expire in ~60 seconds. To retry:

```bash
rm -rf store/auth/ && npx tsx src/whatsapp-auth.ts --pairing-code --phone <phone>
```

Enter the code **immediately** when it appears. Also ensure:
1. Phone number includes country code without `+` (e.g., `1234567890`)
2. Phone has internet access
3. WhatsApp is updated to the latest version

If pairing code keeps failing, switch to QR-browser auth instead:

```bash
rm -rf store/auth/ && npx tsx setup/index.ts --step whatsapp-auth -- --method qr-browser
```

### "conflict" disconnection

This happens when two instances connect with the same credentials. Ensure only one MatClaw process is running:

```bash
pkill -f "node dist/index.js"
# Then restart
```

### Bot not responding

Check:
1. Auth credentials exist: `ls store/auth/creds.json`
3. Chat is registered: `sqlite3 store/messages.db "SELECT * FROM registered_groups WHERE jid LIKE '%whatsapp%' OR jid LIKE '%@g.us' OR jid LIKE '%@s.whatsapp.net'"`
4. Service is running: `launchctl list | grep matclaw` (macOS) or `systemctl --user status matclaw` (Linux)
5. Logs: `tail -50 logs/matclaw.log`

### Group names not showing

Run group metadata sync:

```bash
npx tsx setup/index.ts --step groups
```

This fetches all group names from WhatsApp. Runs automatically every 24 hours.

## After Setup

If running `npm run dev` while the service is active:

```bash
# macOS:
launchctl unload ~/Library/LaunchAgents/com.matclaw.plist
npm run dev
# When done testing:
launchctl load ~/Library/LaunchAgents/com.matclaw.plist

# Linux:
# systemctl --user stop matclaw
# npm run dev
# systemctl --user start matclaw
```

## Removal

To remove WhatsApp integration:

1. Delete auth credentials: `rm -rf store/auth/`
2. Remove WhatsApp registrations: `sqlite3 store/messages.db "DELETE FROM registered_groups WHERE jid LIKE '%@g.us' OR jid LIKE '%@s.whatsapp.net'"`
3. Sync env: `mkdir -p data/env && cp .env data/env/env`
4. Rebuild and restart: `npm run build && launchctl kickstart -k gui/$(id -u)/com.matclaw` (macOS) or `npm run build && systemctl --user restart matclaw` (Linux)