Groups | Meowsapp WhatsApp API

Receiving group messages

Group traffic is off by default because it is noisy and most automations only want 1:1 chats. Enable per session:

POST https://api.meowsapp.com/set-enable-group-ai   { "clientId": "acmemain", "enabled": true }

From then on group messages arrive as normal webhook events with isGroup: true, remoteJid = the group, chatRoomId = <clientId>-<myLid>-<groupId>, and a group object identifying the sender:

event.group

{
  "jid": "120363012345678901@g.us",
  "subject": "Launch team",
  "participant": "123456789012345",
  "participantPhone": "60123456789",
  "participantUsername": "janelim"
}

Broadcast lists, status updates and channels are never delivered regardless of this setting.

Sending to a group

Any send route accepts a group JID in to. Mentions work as in 1:1 chats.

POST https://api.meowsapp.com/send-message   { "clientId": "acmemain", "to": "120363012345678901@g.us", "body": "Meeting moved to 4 pm.", "mentions": ["123456789012345"] }

Managing groups

POST /get-groups              { "clientId": "acmemain" }
POST /get-group-participants  { "clientId": "acmemain", "groupJid": "120363…@g.us" }
POST /create-group            { "clientId": "acmemain", "subject": "Project Alpha", "participants": ["+60123456789", "123456789012345"] }
POST /update-group-members    { "clientId": "acmemain", "groupJid": "120363…@g.us", "action": "add", "participants": ["+60198765432"] }
POST /group-invite-link       { "clientId": "acmemain", "groupJid": "120363…@g.us", "reset": false }
POST /leave-group             { "clientId": "acmemain", "groupJid": "120363…@g.us" }

subject is limited to 25 characters by WhatsApp.
action is one of add, remove, promote, demote; the session must be an admin for all but add in open groups.
/update-group-members returns a per-member status. A non-zero error is WhatsApp's code for that member — 403 means their privacy settings only let admins add them; send them the invite link instead.
reset: true on /group-invite-link revokes the old link and issues a new one.

Adding strangers to groups is a ban signal

Only add people who expect it. Prefer invite links for anything resembling marketing.

Who sent it?

Groups may address members by LID or phone (addressingMode on /get-group-participants). group.participant is always the sender's LID user-part; participantPhone and participantUsername are filled when WhatsApp reveals them. Reply privately withto: group.participant, or in the group with to: group.jid plus mentions: [group.participant].

Full endpoint details: Groups reference.