messaging

name	messaging
description	Send messages to users via WhatsApp and other connected channels. Use when asked to notify someone, send a message, reply to a contact, message a group, or proactively communicate through WhatsApp. Supports text, images, documents, audio, video, and stickers. Also provides group etiquette for observing group conversations — use `<no-reply/>` to stay silent when a response is not needed. Use when this capability is needed.
metadata	{"author":"Array-Ventures"}

Messaging

Send messages through connected channels using the msg CLI.

CLI

# Send a DM
msg send --channel whatsapp --to "[phone]" "Hello!"

# Send to a group (use the group JID)
msg send --channel whatsapp --to "[e-mail]" "Daily summary ready."

# Reply to a specific message
msg send --channel whatsapp --to "[phone]" --reply-to "MSG_ID" "Got it!"

# Send an image with caption
msg send --channel whatsapp --to "[phone]" --image /path/to/photo.jpg "Check this out"

# Send a document
msg send --channel whatsapp --to "[phone]" --file /path/to/report.pdf

# Send a voice note
msg send --channel whatsapp --to "[phone]" --audio /path/to/voice.ogg --ptt

# Send a video with caption
msg send --channel whatsapp --to "[phone]" --video /path/to/clip.mp4 "Watch this"

# Send a sticker
msg send --channel whatsapp --to "[phone]" --sticker /path/to/sticker.webp

# List connected channels and their status
msg channels

# List allowlisted WhatsApp groups
msg groups

Media Flags

Flag	Description
--image <path>	Send an image (JPEG, PNG, WebP, GIF)
--file <path>	Send a document (PDF, DOCX, etc.)
--audio <path>	Send audio (OGG, MP3, M4A)
--video <path>	Send video (MP4, MOV)
--sticker <path>	Send a sticker (WebP)
--ptt	Mark audio as voice note (push-to-talk)

When using --image, --file, or --video, the text argument becomes the caption.

<no-reply/> Directive

When receiving a group message that does not require a response, output <no-reply/> instead of text. The bridge suppresses sending when this directive is present.

Use <no-reply/> when:

• Message is casual chatter or FYI with no actionable content
• Conversation does not involve you and your input adds no value
• Someone else already answered adequately

Do NOT use <no-reply/> when:

• You are @mentioned — always respond to direct mentions
• You have genuinely useful information to contribute
• Someone asked a question you can answer

Group Etiquette

• Keep replies concise and relevant
• Do not send multiple messages in quick succession to the same group
• Wait for a natural pause before contributing to ongoing threads
• Never send sensitive information (passwords, keys, personal data) to groups

Channels

Channel	--channel	--to format
WhatsApp	whatsapp	+{number} (DM) or {jid}@g.us (group)

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Source: Array-Ventures/coworker — distributed by TomeVault.