Safest AI App Builder / Backend and Auth

Clerk

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Overview

Drop-in authentication and user management for React and Next.js, with prebuilt components for sign-in, sessions, and organizations. Popular in AI-generated codebases because it removes the hand-rolled auth that scanners most often flag as broken.

Best for
Next.js apps that want production auth without building it
Pricing
Free tier to 10k monthly active users; paid plans beyond
Category
Backend and Auth

Security scan data

Not yet scanned. Clerk has not been through our aggregate scan pipeline yet. Grades on this site come from passive, read-only scans of real shipped apps, never from vendor claims, and we do not publish a grade until the sample is large enough to be defensible.

How grades are produced, and what counts as a defensible sample, is documented on the methodology page.