---
title: "FREE change + freshness feed — poll this after a paid call instead of re-buying the series"
method: GET
path: "/v1/changes"
tags: ["Discovery", "Alerts"]
---

# FREE change + freshness feed — poll this after a paid call instead of re-buying the series

`GET /v1/changes`

## Request

- Base URL: `https://ausref.dev`
- URL: `https://ausref.dev/v1/changes`
- Auth: none required

Free. Poll instead of re-buying: every series whose value took effect on or after `since` (default 30 days), newest first, with last re-confirmation, stale flag and a freshness summary. Push alternative: POST /alerts.

## Query parameters

- `since` string, date

## Response `200`

Changed series (newest first) plus a dataset-wide freshness summary

## Other responses

- `400`: since was not a real calendar date

---

[API](https://skmtc.dev/ausref/apis/ausref-australasian-government-reference-data.md) · [All operations](https://skmtc.dev/ausref/apis/ausref-australasian-government-reference-data/llms.txt) · [OpenAPI document](https://skmtc.dev/ausref/apis/ausref-australasian-government-reference-data/revisions/002874ef252c?raw)