yafce — Yet Another Claude Extension

Name: yafce — Yet Another Claude Extension
Author: Joedmin

By: Joedmin

Adds a theme toggle and a session/weekly usage indicator directly inside claude.ai's own UI.

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Features & Capabilities

yafce (Yet Another Claude Extension) adds two small, in-page features to claude.ai:

• Theme toggle — an icon-only button next to the incognito button in Claude's top-right toolbar, flipping between light and dark. It does exactly what Claude's own settings toggle does: updates the data-mode attribute, the CH-prefers-color-scheme cookie, and the LSS-userThemeMode localStorage entry — nothing more. The choice survives reloads and syncs across tabs.

• Usage indicator — a small row beneath the message composer that shows your current 5-hour session usage and 7-day weekly usage, plus when each resets. It mounts into the empty slot Claude already reserves inside the composer, so it doesn't add vertical padding. Refreshes automatically after you send a message, or on click. Both features live inside Claude's own page — there is no toolbar popup.

Data source: the extension calls Claude's own /api/organizations/<id>/usage endpoint with your existing session cookies (same calls Claude's UI itself makes) and also passively mirrors usage responses it sees pass by. All captured values are stored in browser.storage.local. Nothing is sent to any third party.

User Growth & Download Statistics

Add-on

By:

Joedmin

Daily users:

Version:

1.0.5 Last updated: 2026-04-23

Version code:

6229137

Creation date:

2026-04-20

Risk:

Permissions:

storage

Host permissions:

https://claude.ai/*
https://*.claude.ai/*

Content scripts matches:

claude.ai
*.claude.ai

Size:

24.01KB

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-07-09

Compare stats and ranking:

Ranking

# 123,471 ▼ 5,951

Other rankings

#129 in claude keyword 65 ▼ 6#142 in claude ai keyword 39 ▼ 7

For Developers

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Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Joedmin

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/yafce/

Website:

https://gitlab.com/joedmin-group/yafce

Is yafce — Yet Another Claude Extension Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

yafce — Yet Another Claude Extension requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details

High Injects scripts into web pages, which may alter or extract site contents, resulting in a substantial risk.
Medium ******* ****** ** *** ********* ******** *********

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

yafce — Yet Another Claude Extension is recently added, and hasn't been around long enough for us to gather enough data to accurately assess its risk level.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
Medium **** ********* *** ******* ** *** **** * ******* *** ******* *** *** ** ****** ** *****
Medium **** ********* *** ***** ** *** **** * ******* *** ********** *** *** ** ****** ** *****