Snyk Advisor is shutting down.
Here's what picks up the slack.
Advisor was a build-time package-health snapshot — paste an npm or PyPI name, see a score. It is going offline. BlackSight's supply-chain scanner covers a different and arguably more important gap: what your live site actually loads at runtime, whether those third parties have breach history, and whether their scripts have changed since yesterday.
Free first scan · No credit card
What each one does
Snyk Advisor (build-time)
- Paste a package name, get a health score
- Release cadence, maintainer activity, known CVEs
- Single snapshot at the time you check
- No runtime visibility
- Going offline January 2026
BlackSight Supply-Chain Scanner (runtime)
- Inventory every script your live site loads
- SRI + drift detection (alerts when a vendor silently changes code)
- Breach-history cross-reference on every third-party domain
- Continuous monitoring, not a one-time lookup
- From $29/mo on the Plus plan
Snyk and Snyk Advisor are trademarks of Snyk Ltd.; BlackSight is not affiliated. For package-name health lookups specifically, we recommend Socket.dev as the closest free replacement. We link to them in our blog post comparing 4 alternatives.
Build-time and runtime cover different failure modes.
The Polyfill.io attack in 2024 affected packages that had good Advisor scores. Reputation at build time tells you about the historical maintainer. It does not tell you about the new owner who acquired the package and silently shipped malicious code three months later.
Build-time catches
Known CVEs in pinned versions. Maintainer reputation at time of install. Abandoned packages. License risk.
Runtime catches
Vendor compromise after you installed. Silent CDN changes. New payload domains. Ownership changes. SRI drift.
Both catches
Complete supply-chain visibility. Most mature programs run one tool for each. Together they cover most realistic attack paths.
See every third-party script on your site in 90 seconds.
First scan is free. Inventory + breach flags + SRI status.