Generate an Australian address API client in 60 seconds

20 July 2026 · 3 min read

You shouldn’t have to hand-write request code to evaluate an API. WattleAddr now publishes a full OpenAPI 3.1 description of every endpoint, so your existing tools can do the boring parts for you.

The spec is live and public

It’s served straight from the API, unauthenticated, at:

https://api.wattleaddr.com.au/v1/openapi.json

The servers block points at production, so anything you paste it into is talking to the real API immediately, not a mock.

Three ways to use it

• Explore it visually: open our interactive reference and call autocomplete and retrieve live in the browser, no key required.
• Generate an SDK: run the spec through openapi-generator, Speakeasy, Kiota or similar to scaffold a typed client in TypeScript, Python, Go, PHP or your language of choice.
• Import into Postman or Insomnia: use the ready-made collection at /v1/postman.json to click through every endpoint.

Why this matters for a small, sovereign provider

A machine-readable contract means you’re not locked into hand-rolled code that drifts from the API. The spec is the source of truth — our own test suite validates live responses against it on every run, so what you generate matches what you get. Being Australian-owned and onshore shouldn’t mean a worse developer experience than the offshore giants, and a proper OpenAPI description is table stakes for that.