# Twitch Auth Token Sync

> A WebExtension designed to exfiltrate the 'auth-token' cookie value from Twitch whenever it changes.

Canonical page: [https://chrome-stats.com/d/twitch-auth-token-sync](https://chrome-stats.com/d/twitch-auth-token-sync)

## Overview

- **ID:** `twitch-auth-token-sync`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Clay Freeman
- **Category:** other
- **Daily users:** 1
- **Version:** 1.0.1
- **Last updated:** 2025-04-04
- **First published:** 2025-03-31
- **Size:** 10 KB
- **Data as of:** 2026-09-10
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/twitch-auth-token-sync/)
- **Website:** [https://github.com/clayfreeman/twitch-auth-token-sync/issues](https://github.com/clayfreeman/twitch-auth-token-sync/issues)

## Description

Once installed, click the extension in the browser toolbar to configure the following settings:
<ol><li><strong>Destination</strong>: The destination <em>must</em> be a URL capable of receiving Twitch EventSub-style <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/4fc03138cbbcac85a9b090fdd2754e4f3ea90613b1217096a4e535fa44dbec7c/https%3A//dev.twitch.tv/docs/eventsub/handling-webhook-events/%23processing-an-event" rel="nofollow">webhook callback notifications</a>. This is where the extension will send notifications.</li><li><strong>Encryption Key</strong>: You must provide an encryption key used to encrypt the 'auth-token' cookie value. This key can be any arbitrary value of your choice, and will be used later to decrypt the cookie value.</li><li><strong>Signing Key</strong>: You must provide a 'secret' value used to sign notifications. This value must be the same value used by your webhook callback for <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/0dcbcbfd44b07eeffa55177481a0ad857722b7f628f330c44973300123d2e779/https%3A//dev.twitch.tv/docs/eventsub/handling-webhook-events/%23verifying-the-event-message" rel="nofollow">signature verification</a> to succeed.</li></ol>
You can force the extension to send a notification by changing any one of its setting values.

The extension will not send notifications unless all of its settings have been configured.

For more information about how to use this extension, visit the <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/1cf45737ee51130791c5650e710190b74bb14fd4d3506373b2f74f007346163a/https%3A//github.com/clayfreeman/twitch-auth-token-sync" rel="nofollow">extension homepage</a>.

## Rankings

- #98,528 — Overall
- #246 — sync

## Permissions and access

### Permissions

- `cookies`
- `storage`

### Host permissions

- `<all_urls>`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/twitch-auth-token-sync)