SynthTrail

Prompt injection risk: audit the hidden layer of your public pages

Agents read everything on a page, including text people never see. SynthTrail audits the hidden parts of your pages, where unwanted instructions and sensitive text tend to sit.

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$9.99 a month. No contract. Cancel any time.

The problem: instructions in the hidden layer

Prompt injection works by placing text where an agent will read it as an instruction, such as in comments, hidden fields, off-screen text or user-submitted content. If your site accepts comments, reviews or profiles, that text is read by every agent that visits.

What SynthTrail checks

It reads the rendered page for comments with sensitive wording, hidden fields that hold values, secrets and tokens, and many email addresses in plain view. These are the places that deserve review.

Be clear about the limit

SynthTrail does not detect injected instructions or tell you an attack happened. It shows what is readable and which agents are reading it, and its session trails show whether an agent then touched forms or sensitive paths. Review user-submitted content on its own.

What you get

A list of hidden content worth reviewing
Which agents visited those pages
Form and sensitive-path activity after a read
A fix next to every finding

Follow the trail on your own site

Paste one snippet and see the synthetic visitors that use your site. Card details are entered on Stripe, never on this site.

Audit your AI traffic