Universal Claimer - Exporter 作者： Mouchoir

Universal Claimer is a self-hosted tool that claims free games and rewards on your own accounts. Some services refuse the browser it controls, so an account is connected by importing a session you exported yourself. This extension is how you export it.

You click the extension while signed in to a supported service, and it hands the session cookies back to you — clipboard or file download. You paste them into your own instance.

It never makes a network request. There is no server, no telemetry, and no third party. The extension contains no code that opens a network connection, so there is nowhere for your data to go: it reads cookies and gives them to you, and that is the whole program.

Cookie access is limited to the services Universal Claimer supports — Twitch, Epic Games, Microsoft, and Amazon's regional storefronts. The browser enforces that list, not the extension's own code, so it cannot read cookies for any other site. On Firefox those permissions stay off until you grant them per site.

Open source under the MIT licence. Every store release is built by a public GitHub Actions workflow from a tagged commit of the public repository — never uploaded by hand — so the package you install and the source you can read are the same artifact, and the build log is public.

Source: https://github.com/Mouchoir/universal-claimer-extension