v1

latestOpenAPI 3.1.02026-07-22115189303.8 KB
Webhooks

Create webhook

Subscribe to WhatsApp events for this number.

Two webhook types available:

  • kapso: Event-based webhooks with filtered events, buffering support, and Kapso payload format
  • meta: Raw Meta webhook forwarding - receives the exact payload Meta sends, with X-Idempotency-Key header

Use buffering (kapso only) to batch high-volume events like inbound messages. Without buffering, each message triggers an immediate webhook delivery.

post/whatsapp/phone_numbers/{phone_number_id}/webhooks

Request body

Response

Created