Skip to content
VCL / Compute@Edge · 5-10 minutes

Bot detection for Fastly CDN via VCL or Compute

Integrate Centinel with Fastly using VCL snippets or Compute@Edge (Rust).

Real-time detection

Spot AI crawlers on your Fastly infrastructure the moment they access your site.

Under 2ms latency

Our validation API responds in under 2ms. Zero perceptible impact on your end users.

Crawler metadata

Every response includes crawler identification, category (AI training, inference, search), and access history.

How it works

Centinel + Fastly in three steps

01
Add browser script
A lightweight script sets a session cookie on protected pages.
02
Configure Fastly
Your Fastly instance calls our validation API for protected endpoints.
03
Enforce decisions
Allow, block, or challenge based on the real-time API response.

Find out what's hitting your site right now

Book a 30-minute demo and we'll run a live audit of your traffic before you commit to anything.

No credit card. No commitment. Just a clear picture of your traffic.

"We had no idea 40% of our traffic was AI crawlers until Centinel showed us. Setup took fifteen minutes and we were blocking unauthorized scrapers the same day."

Head of Engineering

Series B SaaS Company