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WhatsApp Business API / 4 min read

WhatsApp Business API webhook

Webhook basics for WhatsApp Business API: events, payloads, and security.

Webhooks deliver WhatsApp Business API events like message statuses and replies. Setting them up correctly ensures your CRM/helpdesk stays in sync.

Key takeaways

Configure a public HTTPS endpoint and verify the webhook with the challenge handshake.
Validate signatures to ensure events are authentic.
Handle message statuses, deliveries, and inbound messages idempotently.

Webhook setup

Expose an HTTPS endpoint accessible to Meta/provider.
Complete the verification handshake (hub.mode, hub.verify_token, hub.challenge for Cloud API).
Store secrets/verify tokens in env vars.

Events to handle

Message status updates (sent, delivered, read, failed).
Inbound messages and interactive replies.
Template status updates (optional, provider-specific).

Reliability tips

Return 200 OK quickly; process asynchronously.
Deduplicate by message ID to avoid double-processing.
Log payloads for debugging and audits (with PII safeguards).

FAQs

Do I need a static IP?

Not required for Cloud API, but your endpoint must be reachable via HTTPS.

How do I secure the webhook?

Use signature verification/verify tokens and HTTPS. Reject unverifiable requests.

Can I retry failed deliveries?

Meta may retry; you should handle idempotency. Implement your own retry/backoff for internal processing failures.

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