This extension allows you to sign Nostr events on web-apps without having to give them your keys.

nos2x promo image
What is nos2x?

nos2x is a Firefox add-on by fiatjaf. This add-on has 184 daily active users, a perfect 5.0 rating, and was removed from Firefox Browser Add-ons 7 months ago. The latest version, 1.4.0, was updated 10 months ago.

This add-on was removed from Firefox Browser Add-ons on 2023-03-08
Stats date:
By: fiatjaf
Users: 184
Rating: 5.00 (2)
Version: 1.4.0 (Last updated: 2022-11-22)
Creation date: 2022-01-14
Weekly download count: 28
Firefox on Android: Yes
Manifest version: 2
  • storage
Size: 678.72K
Email: Click to see
URLs: Website
Risk impact: High risk impact
Risk likelihood: High risk likelihood

Other platforms

Not available on Chrome
Not available on Edge

You can now use Nostr-powered web apps on the wild web without having to type private keys. Using nos2x your keys never leave the extension.

Apps can seamlessly request you to sign them manually by calling window.nostr.signEvent(). That will open a prompt popup in which you can authorize access.

Access is granted to full domains and can be granted temporarily, just a single time, or forever.

User reviews
Works great on all nostr-services I've tried

Simple and does what it should.
View all user reviews
Risk impact

nos2x is risky to use as it requires a number of sensitive permissions that can potentially harm your browser and steal your data. Exercise caution when installing this add-on. Review carefully before installing. We recommend that you only install nos2x if you trust the publisher.

Risk likelihood

nos2x may not be trust-worthy. Avoid installing if possible unless you really trust this publisher.

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