woocommerce order sms notification using api

Hi

Technical documentation for the WooCommerce REST API can be found here:

https://woocommerce.github.io/woocommerce-rest-api-docs/

Another option would be to use the Twilio SMS Notifications extension from the WooCommerce Marketplace:

https://woocommerce.com/products/twilio-sms-notifications/

Hope this helps,