ExtSpot
nos2x icon

nos2x Chrome Extension Analysis

Crypto & Web3 Utilities

Chrome extension ID: kpgefcfmnafjgpblomihpgmejjdanjjp

nos2x is a browser extension that acts as a secure bridge for Nostr-compatible web applications. It manages private keys locally and provides authorization interfaces for signing events, enhancing security and privacy for the user.

Developer:fiatjaf
Version:2.5.2
Size:710KiB
Last updated:
View developer profile
External:Chrome Web StoreOfficial website

Overview

Installs

20K+

Rating

★ 4.8

17 reviews

Languages

1 locales

Includes English (United States)

Market analysis

Review-backed positioning, friction, and market signals for this Chrome extension.

Backed by review samples

Macro category

Crypto & Web3 Utilities

Pricing friction

Low review signal

Complaint intensity

Low review signal

Listing & review signals
Observed signals from store listing text and review samples.

Listing positioning

The extension is positioned as a essential utility for Nostr users to manage event signing securely within web applications. It serves as an implementation of the NIP-07 standard, allowing users to interact with web-apps without exposing their private keys.

Inferred product pattern

Open-source security utility for decentralized protocol integration.

Review-backed pain points

Users have requested more granular control over authorization durations (e.g., 'authorize for 24 hours') rather than just binary once/forever options.

Observed feature gaps

The UI is noted as being unrefined, and there is a lack of flexible time-based permission management for event signing.

Tags
NostrWeb3 SecurityNIP-07PrivacyKey Management
Target users

- Nostr protocol users

- Web3 developers

- Privacy-conscious browser users

Primary use cases

- Signing Nostr events on web platforms

- Managing private key security

- Authorizing web-app interactions

Positive themes

- Simple and easy to use

- Enhanced security for private keys

- Reliable performance as expected

Negative themes

- Limited authorization duration options

- Unrefined user interface

Observed friction

- None; the product is free.

Evidence boundary: Product information and user reviews confirm a stable, open-source security tool favored for simplicity and privacy in the Nostr ecosystem. Review sample size is relatively small, though consistent in sentiment.
Complaint summaries
Review-backed complaint signals grouped by operational area.

Support

None observed.

Reliability

None observed; the product is described as working as expected.

Privacy

None; reviews characterize the extension as private and secure.

Access & pricing

- Free usage observed

- No account requirement observed

- Free plan or free usage claimed

Store listing facts

Listing assets

- Screenshots: 4

- Videos: 0

- Languages: 1

Trust signals

- Privacy policy

- Developer contact

- Official website

Store metadata

- Version: 2.5.2

- Size: 710KiB

- Last updated:

Listing SEO keywords

Search intent keywords
Keyword signals for evaluating how users may discover, compare, or search for this extension category.

Core discovery

Nostr signer extensionNIP-07 extensionNostr private key manager

Comparison

nos2x vs nostr walletNostr signing tools

Problem

securely sign nostr eventsprotect nostr private key

Alternative

Nostr extensionsWeb3 identity tools

Similar extensions

Jump to related discovery paths:

More in socialMore from this developer

Screenshots

nos2x screenshot
nos2x screenshot
nos2x screenshot
nos2x screenshot

Links

Website: github.com

Privacy policy: https://github.com/fiatjaf/kwh/blob/master/docs/privacy-policy.md

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