Why check the live site and not just source?

Because the deployed bundle is what attackers actually see. A build step can leak a key into served JS even when source looks clean.

What does the probe fetch?

It fetches your site's JavaScript bundles read-only, the same way any visitor would, and scans them for secret-shaped values.

Is the secret ever shown in full?

Never. Findings show only a masked prefix and last 4 characters.

Secrets in code

Live Secret in JS Check — Is a Real Key in the JavaScript Your Site Serves?

DevMeth checks the 48 known AI-code failure patterns — not a penetration test or a security guarantee.

What the issue is

Even if source looks fine, the JavaScript your deployed site actually serves to anyone can contain a live secret — from a public env prefix, a hardcoded value, or a config that leaked into the build.

Why AI tools generate it

A build or config step can bake a working key into the bundle the server outputs, so the deployed artifact differs from the source on disk.

How DevMeth detects it

A live probe fetches your site's JavaScript the way any visitor can and scans it for secret-shaped values, reporting masked matches.

What a finding looks like

Critical

A live secret is visible in the JavaScript your site serves to anyone

WHAT WE FOUND

/_next/static/chunks/main.js — sk-…a1b2 (masked)

Sample — illustrative and masked exactly as a real report shows it. Run a free scan to see your own results.

The fix, in three steps

Find where the value enters the build, rotate it, move it to a server-only secret, and redeploy so the served bundle is clean. Three steps.

Run a free scan and each finding carries a paste-ready fix prompt you can act on.

Try a free scan

FAQ

DevMeth checks the 48 known AI-code failure patterns — not a penetration test or a security guarantee. A clear result means each known pattern was checked and found clear or not applicable for your app; it is not a guarantee of security.