DevMeth
C12

Access & auth

Authless Route Handler Check — Does Your API Trust Anyone Who Calls?

DevMeth checks the 48 known AI-code failure patternsnot a penetration test or a security guarantee.

What the issue is

An API route that reads or writes data without checking who's calling lets any anonymous visitor act as a logged-in user and access or modify the data it touches.

Why AI tools generate it

AI-generated scaffolds often leave route handlers without an auth check so the demo works fast, and the check never gets added before launch.

How DevMeth detects it

A code scan inspects data-touching route handlers for server-side auth evidence (session, user lookup, or middleware) and flags those with none.

C12
What a finding looks like
Critical

Your API handles writes or reads without checking who's calling

WHAT WE FOUND

app/api/orders/route.tsno server-side auth check

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

Add server-side authentication to every data-touching route — verify the session and ideally the user's role before reading or writing. Three steps.

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

Try a free scan

FAQ

Is client-side auth enough for an API route?

No — servers must independently verify the caller. Anything checked only in the browser can be bypassed by calling the API directly.

What counts as auth evidence?

A session check, a user lookup, or middleware that enforces auth on the route server-side.

What's the fix?

Add server-side authentication to every data-touching route and verify the caller's role before any read or write.

DevMeth checks the 48 known AI-code failure patternsnot 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.