SynthTrail

Spot synthetic visitors while they are still on your site

A synthetic visitor is software that browses your site like a person: an AI assistant fetching an answer, an automated browser filling in a form, a scripted agent working through your pages. SynthTrail recognises them from inside the page.

Detect synthetic visitors on your site See a flagged session

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

Several signals, not one guess

The snippet checks whether the browser names itself as a known AI agent, reports that it is being automated, runs headless, shows traces of automation tools, fires clicks and typing that no real input device produced, or opens pages faster than a person can. Each signal adds to a score, and a session is flagged once the score is high enough.

Live, not after the fact

Flagged sessions are sent in short batches while the visit is under way, so a session shows up in your dashboard within seconds and keeps growing as the agent keeps moving.

Plain-language reasons

Each flagged session lists why it was flagged, in words like “Clicks or typing are scripted, not from a person”. You never have to interpret a raw score.

What triggers a flag

The browser names itself as a known AI agent
Automation or headless markers are present
Scripted clicks, typing or form submits
Pages opened faster than a person can read them

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.

Detect synthetic visitors on your site