API overview and authentication

WA.Expert gives you full access to the WhatsApp Business Platform (Cloud API). You send messages and manage templates with standard REST calls authenticated by a bearer token. This page covers the basics every call needs.

What you need

Three values: your access token, your phone number ID, and the recipient's number in international format. Find the token and phone number ID in your WA.Expert dashboard under the channel's API settings.

Base URL and auth

Calls go to the Graph API host, scoped to your phone number ID. Every request carries a bearer token in the Authorization header.

curl -X POST \
  "https://graph.facebook.com/v23.0/PHONE_NUMBER_ID/messages" \
  -H "Authorization: Bearer ACCESS_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{ "messaging_product": "whatsapp", "to": "PHONE_NUMBER", "type": "text", "text": { "body": "Hello" } }'

Prefer no code? The same actions are available through the dashboard and the no-code automation builder. See the Integrations docs.