Receiving Events

conversation.history

Recent WhatsApp history for one conversation was synced after bootstrap or reconnect.

Event payload

{
  "id": "evt_wa_history_10001_8613912345678@s.whatsapp.net",
  "type": "conversation.history",
  "provider": "whatsapp",
  "account_id": "acc_8c21d0",
  "occurred_at": "2026-06-08T12:46:00Z",
  "data": {
    "conversation": { "id": "8613912345678@s.whatsapp.net", "type": "user" },
    "messages": [
      {
        "id": "3EB0A1",
        "type": "text",
        "text": "Previous order question",
        "direction": "inbound",
        "sent_at": "2026-06-08T11:58:12Z",
        "sender": { "id": "8613912345678@s.whatsapp.net" }
      },
      {
        "id": "3EB0A2",
        "type": "image",
        "direction": "inbound",
        "sent_at": "2026-06-08T11:59:20Z",
        "sender": { "id": "8613912345678@s.whatsapp.net" },
        "attachments": [
          {
            "type": "image",
            "url": "https://unifyport-media.oss-cn-hongkong.aliyuncs.com/pro/1/whatsapp/10001/history.jpg?Expires=1749387560&Signature=...",
            "mimetype": "image/jpeg"
          }
        ]
      }
    ]
  }
}

Notes

A WhatsApp HistorySync batch for one conversation. data.conversation identifies the chat and data.messages[] contains recent messages in chronological order. Each message carries id, type, direction, sent_at, sender, text, and/or attachments.
This is recent history for bootstrap and reconnect continuity, not a full archive. The service caps the number of conversations and messages per conversation; older media can be marked expired instead of carrying a url.