Optus Developer Platform
Optus CPaaS APIs — SMS, number verification and rich messaging — from one account. Authenticated, rate limited and production-ready from your very first request.
The APIs
SMS Messaging API
Send SMS and track delivery across the Optus network. Authenticate with a single portal-issued key and you are messaging in seconds.
Number Verification API
Start and confirm one-time passcodes over SMS. Secured for service-to-service traffic with OIDC bearer tokens and scope-based authorization.
Messaging API
Reach customers on WhatsApp and RCS from one contract. OIDC bearer tokens and scoped access, ready for high-value conversational traffic.
Start here
Make your first call
Copy a working curl for any of the three APIs and see a real response. Self-service onboarding, no ticket required.
Understand the two auth schemes
API keys for the SMS API, OpenID Connect for verification and messaging — and why a valid token can still be refused.
Design for the limits
Read the RateLimit-* headers, pick the right plan, and back off before you are throttled rather than after.
Browse the full catalog under APIs. Every endpoint comes with a complete reference, and you can call it live from the built-in console.
From sign-up to live
Getting into production is self-service and takes minutes, not tickets.
No sales call, no waiting on approval. Register an application, copy your credentials, and you are sending messages the same minute. When traffic grows, move to a higher plan without changing a line of code.