Vonage provides an Application API to allow management of your Vonage Applications. This API is backwards compatible with version 1. Applications created using version 1 of the API can also be managed using version 2 (this version) of the API.
curl \ -u "$API_USER:$API_PASS" \ https://api.nexmo.com/v2/applications/
curl \
-u "$API_USER:$API_PASS" \
https://api.nexmo.com/v2/applications/{id}