---
title: >-
  Add status 499 metric to Historical Stats, Real-Time Analytics, and Domain
  Inspector APIs
summary: null
url: https://www.fastly.com/documentation/reference/changes/2026/09/add-status-499
---

The [Historical Stats API](https://www.fastly.com/documentation/reference/api/metrics-stats/historical-stats/), [Real-Time Analytics API](https://www.fastly.com/documentation/reference/api/metrics-stats/realtime/), [Domain Inspector Historical API](https://www.fastly.com/documentation/reference/api/metrics-stats/domain-inspector/historical/), and [Domain Inspector Real-Time API](https://www.fastly.com/documentation/reference/api/metrics-stats/domain-inspector/real-time/) now track client disconnects from Varnish services via the new `status_499` metric.