---
title: "Extended identifiers"
description: "CloudX now forwards publisher-provided UID 2.0, LiveRamp, and ID5 values on bid requests. No SDK update is required."
url: "https://www.cloudx.ai/changelog/extended-identifiers"
published: "2026-08-20"
---

# Extended identifiers

CloudX now forwards publisher-provided UID 2.0, LiveRamp, and ID5 values on bid requests, so demand partners that use these identifiers can read them. Pass them with the existing `setUserKeyValue` API; no SDK update is required.

## What’s new

- UID 2.0: Pass the UID2 advertising token under `uidapi.com`.
- LiveRamp: Pass the LiveRamp ATS envelope, not a RampID, under `liveramp.com`.
- ID5: Pass the ID5 universal UID under `id5-sync.com`.
- On the bid request: OpenRTB 2.6 bidders read `user.eids`, and OpenRTB 2.5 bidders read `user.ext.eids`.

## Getting started

Set each value with `setUserKeyValue` on Android, iOS, Unity, React Native, or Flutter. CloudX doesn’t generate, decrypt, or replace these values. EUID tokens and Intent IQ IDs now pass through the same way. Read the [extended identifier docs](https://docs.cloudx.io/en/demand/identity) for each key.