Pkg
Stats

npm package discovery and stats viewer.

Discover Tips

General search
[free text search, go nuts!]
Package details
pkg:[package-name]
User packages
@[username]

Sponsor

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Twitter
@PkgStats
GitHub
pkgstats
Twitter
@ryanhefner
GitHub
ryanhefner
Site
ryanhefner.com

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

Framework
react / react-dom
Server
next / express / next-routes
Data Store
redux / react-redux / next-redux-wrapper / redux-thunk / redux-logger
Caching
lru-cache
CSS / Styling
next-page-transitions / styled-components
Typeface
@ibm/plex
Avatars
gravatar
Data Viz
chart.js / react-sparklines
Date formatting
dayjs
Infinite scrolling
react-scroll-trigger
Markdown rendering
react-markdown
Repository url parsing
hosted-git-info
User data
npm-user
Compiling
babel-plugin-module-resolver / babel-plugin-styled-components
Types
prop-types
Odds & Ends
es6-promise / isomorphic-fetch

© 2026 – Pkg Stats / Ryan Hefner

quantumscan-agent-doctor

v1.0.1

Published

11 days ago

Instant, zero-signup security check for an autonomous agent's wallet — open approvals + ECDSA nonce reuse.

0High
0Medium
0Low

ai-agent wallet-security blockchain-security post-quantum-cryptography quantumscan erc-20 honeypot drainer

quantumscan-agent-doctor

Instant, zero-signup security check for an autonomous agent's wallet.

npx quantumscan-agent-doctor 0xYourAgentWallet

Checks, in one shot, with no API key required:

Open ERC-20 approvals — a single exploited approval can drain 100% of an approved token from an agent's wallet without any further action from the agent
ECDSA nonce reuse — if the agent's signing library ever reuses the same ephemeral nonce across two signatures, the private key is recoverable by pure algebra from public on-chain data. This is a mathematical certainty, not a heuristic — real losses have happened this way before (2013 Android SecureRandom Bitcoin thefts, the Sony PS3 signing-key recovery).

Exit code is non-zero if a real risk is found (1 for risky approvals, 2 for confirmed nonce reuse) — safe to use as a CI gate before deploying an agent.

npx quantumscan-agent-doctor 0xYourAgentWallet --chain 137   # Polygon
npx quantumscan-agent-doctor 0xYourAgentWallet --chain 8453  # Base

Higher rate limits

Free tier: a few checks/day per IP. For CI or heavier use:

export QUANTUMSCAN_API_KEY=qs_...  # free at quantumscan.io

Full protection

This CLI is a point-in-time check. For continuous protection wired into an agent's signing path, see @quantumscan/sdk or langchain-quantumscan.

License

MIT