VertexSMS — Overview

VertexSMS is an SMS / Viber messaging gateway used for OTP, delivery notifications and customer messaging.

• Interactive API: Swagger UI — SMS, Viber, HLR lookup, Sender ID, rates/operators.
• Authentication: Auth model — access token via the at query parameter.
• Reference: endpoint reference.

Capability areas

• SMS — send messages (DLR callbacks, scheduling, encoding, test mode); list scheduled messages.
• Viber — send Viber messages with optional button and image.
• Number Lookup (HLR) — async subscriber lookup with callback.
• Sender ID — register and confirm sender IDs.
• Other — rates, prefixes, operators, MCC/MNC, number correction.

Environment

Env	Base URL
Production	https://api.vertexsms.com