web.whatsapp.com
WhatsApp — Forward message
Input
name requiredExact source chat name to open (from get_inbox).
toChats requiredExact names of the destination chats to forward to.
messageId requiredMessage id to forward (from get_conversation or search_messages). Note: if this message was sent immediately after another message from the same sender with no time gap, WhatsApp may have grouped them into a single row that only exposes the newest message's id — forwarding an earlier, swallowed message in such a group will fail with a clear error. Very old messages in long conversations may also be unreachable.
Output
toChats requiredforwarded requiredmessageId required