Wa

WhatsApp Skill

CRITICAL: Sending Rules

NEVER send without explicit confirmation. Wrong-number sends leak confidential info.

• Block unverified sends via a PreToolUse hook (see hooks/).
• NEVER construct phone numbers from memory.
• Discussion/brainstorming is NOT a send instruction. Only "send", "go", "send it" counts.

Only send flow:

1. Run your verified send script (dry run: resolves JID, shows phone, exits without sending)
2. Show the user the resolved phone number
3. Wait for explicit "yes" / "send" / "go"
4. Run with --confirmed flag

Reading Messages

Step 1: Copy the DB

DB_SOURCE="<PATH_TO_WHATSAPP_CHATSTORE_SQLITE>"
cp "$DB_SOURCE" /tmp/wa-chat.sqlite

If the copy fails, the source is unavailable. Do not proceed; tell the user.

Step 2: Find a contact

sqlite3 /tmp/wa-chat.sqlite "
SELECT ZCONTACTJID, ZCONTACTIDENTIFIER, ZPARTNERNAME
FROM ZWACHATSESSION
WHERE ZPARTNERNAME LIKE '%Name%';
"

Step 3: Read DM messages

sqlite3 /tmp/wa-chat.sqlite "
SELECT ZFROMJID, ZTEXT, datetime(ZMESSAGEDATE + 978307200, 'unixepoch') as msg_time
FROM ZWAMESSAGE
WHERE ZFROMJID LIKE '%PHONE_OR_LID%'
ORDER BY ZMESSAGEDATE DESC
LIMIT 20;
"

Replace PHONE_OR_LID with phone digits or LID from step 2 (no +, no spaces).

Step 4: Read group messages

sqlite3 /tmp/wa-chat.sqlite "
SELECT ZMEMBERJID, ZTEXT, datetime(ZMESSAGEDATE + 978307200, 'unixepoch') as msg_time
FROM ZWAMESSAGE
WHERE ZCHATSESSION IN (
  SELECT Z_PK FROM ZWACHATSESSION WHERE ZPARTNERNAME LIKE '%GroupName%'
)
ORDER BY ZMESSAGEDATE DESC
LIMIT 20;
"

Step 5: Read full conversation (both sides)

sqlite3 /tmp/wa-chat.sqlite "
SELECT
  CASE WHEN ZFROMJID IS NULL THEN 'Me' ELSE ZFROMJID END as sender,
  ZTEXT,
  datetime(ZMESSAGEDATE + 978307200, 'unixepoch') as msg_time
FROM ZWAMESSAGE
WHERE ZCHATSESSION IN (
  SELECT Z_PK FROM ZWACHATSESSION WHERE ZCONTACTJID LIKE '%PHONE_OR_LID%'
)
  AND ZTEXT IS NOT NULL
ORDER BY ZMESSAGEDATE DESC
LIMIT 30;
"

Outgoing messages have ZFROMJID = NULL.

Common Tasks

"What did X say lately?"

1. Copy DB
2. Find contact JID
3. Run full conversation query with LIMIT 20
4. Show messages newest-first, formatted as [time] sender: text

"Any new WhatsApp messages?"

1. Copy DB
2. Query all sessions ordered by last message time:

sqlite3 /tmp/wa-chat.sqlite "
SELECT ZPARTNERNAME, datetime(ZLASTMESSAGEDATE + 978307200, 'unixepoch') as last_msg
FROM ZWACHATSESSION
ORDER BY ZLASTMESSAGEDATE DESC
LIMIT 20;
"

"Send X a message saying Y"

1. Draft the message, show user for review
2. Run verified send script (dry run)
3. Show resolved phone number
4. Wait for explicit send confirmation
5. Run with --confirmed

Troubleshooting

DB copy fails: Source is unavailable (mount down, app not running). Tell user.

ZTEXT is NULL: Message may be media-only (image, video, audio, sticker).

Contact not found: Try partial name, try phone digits, try ZCONTACTIDENTIFIER column.

Timestamp offset: 978307200 is Apple Cocoa epoch (Jan 1 2001). This is correct for WhatsApp Desktop on macOS.