---
title: "Consumer Price Index (CPI)"
method: GET
path: "/v1/rba/inflation"
tags: ["RBA Economic Data"]
---

# Consumer Price Index (CPI)

`GET /v1/rba/inflation`

## Request

- Base URL: `https://api.aristocles.com.au` (the document declares no server; this is the origin it was published from)
- URL: `https://api.aristocles.com.au/v1/rba/inflation`
- Auth: none declared. Required headers: `X-API-Key`

Australian CPI inflation series — headline, trimmed mean, and weighted median.

Quarterly data back to 1948. Use for real-wage calculators, cost-of-living
adjustments, and economic dashboards.

## Query parameters

- `periods` integer: Number of quarterly observations

## Headers

- `X-API-Key` string, required

## Response `200`

Successful Response

- unknown

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/aristocles/apis/aristocles-data-api.md) · [All operations](https://skmtc.dev/aristocles/apis/aristocles-data-api/llms.txt) · [OpenAPI document](https://skmtc.dev/aristocles/apis/aristocles-data-api/revisions/4ca3fbb73c59?raw)