whatsapp-send-skill - SKILL.md Agent Skill

name: whatsapp-send-skill description: Send WhatsApp messages to contacts, groups, or channels. Supports text, images, videos, audio, documents, stickers, locations, and contacts. allowed-tools: whatsapp_send metadata: author: machina version: "1.0" category: messaging

WhatsApp Send Tool

Send messages to WhatsApp contacts, groups, or newsletter channels.

How It Works

This skill provides instructions for the WhatsApp Send tool node. Connect the WhatsApp Send node to Zeenie's input-tools handle to enable message sending.

whatsapp_send Tool

Send messages to individual contacts, groups, or channels.

Schema Fields

Field	Type	Required	Description
recipient_type	string	Yes	`"phone"` for individual, `"group"` for group chat, or `"channel"` for newsletter
phone	string	If phone	Phone number without + prefix (e.g., `1234567890`)
group_id	string	If group	Group JID (e.g., `123456789@g.us`)
channel_jid	string	If channel	Newsletter JID (e.g., `120363198765432101@newsletter`)
message_type	string	Yes	Message type (see below)
message	string	If text	Text message content
media_url	string	If media	URL for image/video/audio/document/sticker
caption	string	No	Caption for media messages
latitude	float	If location	Latitude coordinate
longitude	float	If location	Longitude coordinate
location_name	string	No	Display name for location
address	string	No	Address text for location
contact_name	string	If contact	Contact display name
vcard	string	If contact	vCard 3.0 format string

Message Types

Type	Required Fields	Description
`text`	message	Plain text message
`image`	media_url	Image file (JPG, PNG, GIF)
`video`	media_url	Video file (MP4)
`audio`	media_url	Audio file (MP3, OGG, WAV)
`document`	media_url	Any file type
`sticker`	media_url	Sticker image (WebP)
`location`	latitude, longitude	GPS coordinates
`contact`	contact_name, vcard	Contact card

Examples

Send text message to contact:

{
  "recipient_type": "phone",
  "phone": "1234567890",
  "message_type": "text",
  "message": "Hello! How are you?"
}

Send image with caption:

{
  "recipient_type": "phone",
  "phone": "1234567890",
  "message_type": "image",
  "media_url": "https://example.com/photo.jpg",
  "caption": "Check out this photo!"
}

Send to group:

{
  "recipient_type": "group",
  "group_id": "123456789012345678@g.us",
  "message_type": "text",
  "message": "Hello everyone!"
}

Send to channel (newsletter):

{
  "recipient_type": "channel",
  "channel_jid": "120363198765432101@newsletter",
  "message_type": "text",
  "message": "Channel update: new features released!"
}

Channel limitations: Channels only support text, image, video, audio, and document message types. Sticker, location, and contact are NOT supported. You must be an admin/owner of the channel to send.

Send video:

{
  "recipient_type": "phone",
  "phone": "1234567890",
  "message_type": "video",
  "media_url": "https://example.com/video.mp4",
  "caption": "Check this video"
}

Send document:

{
  "recipient_type": "phone",
  "phone": "1234567890",
  "message_type": "document",
  "media_url": "https://example.com/report.pdf",
  "caption": "Here's the report"
}

Send location:

{
  "recipient_type": "phone",
  "phone": "1234567890",
  "message_type": "location",
  "latitude": 37.7749,
  "longitude": -122.4194,
  "location_name": "San Francisco",
  "address": "San Francisco, CA, USA"
}

Send contact card:

{
  "recipient_type": "phone",
  "phone": "1234567890",
  "message_type": "contact",
  "contact_name": "John Doe",
  "vcard": "BEGIN:VCARD\nVERSION:3.0\nFN:John Doe\nTEL:+1234567890\nEND:VCARD"
}

Response Format

{
  "success": true,
  "recipient": "1234567890",
  "recipient_type": "phone",
  "message_type": "text",
  "details": {
    "status": "sent",
    "preview": "Hello! How are you?",
    "timestamp": "2025-01-30T12:00:00"
  }
}

Error Response

{
  "error": "Phone number is required for recipient_type='phone'"
}

Guidelines

Phone numbers: Always use without + prefix, just digits (e.g., 919876543210)
Group IDs: Use JID format ending in @g.us (e.g., 123456789@g.us)
Channel JIDs: Use JID format ending in @newsletter (e.g., 120363198765432101@newsletter)
Media URLs: Must be publicly accessible URLs (https://)
vCard format: Use vCard 3.0 specification for contact cards
Message length: Text messages can be up to 4096 characters
Media size: Check WhatsApp limits for media file sizes

Common Use Cases

Send automated notifications to contacts
Forward messages to groups
Share media files
Send location information
Share contact information

Setup Requirements

Connect the WhatsApp Send node to Zeenie's input-tools handle
Ensure WhatsApp is connected (green status indicator in Credentials)
The recipient must have WhatsApp installed