Turnstile for APIs.

Blocked 92% of bot signups without CAPTCHAs. Render sub-50ms trust decisions using infrastructure and behavioral signals. No friction, just results.

"The internet was built on trust. Today, trust is a signal that must be verified at scale."

The ASN Matrix

We monitor the governance and economic behavior of over 100,000 Autonomous Systems. If a request comes from infrastructure designed for abuse, Sentinel knows.

Behavioral Entropy

Humans are beautifully chaotic. Bots are precisely robotic. Our engine analyzes the timing and velocity entropy of every interaction to spot the difference in milliseconds.

Economic Defenses

We don't block; we challenge. By forcing clients to perform cryptographic work, we make automated attacks economically impossible while keeping humans flowing seamlessly.

Dark Intelligence

Integration with global honeypots and abuse telemetry allows us to predict threats before they hit your load balancers.

92%
Reduction in Bot Signups
<50ms
Decision Latency
100%
CAPTCHA-Free Experience

Why not reCAPTCHA or Turnstile?

Traditional solutions are built for browsers. Sentinel is built for APIs. While widgets protect pages, Sentinel protects the logic layer.

FEATURE reCAPTCHA TURNSTILE SENTINEL
Primary Target Browser/Web Browser/Web Modern APIs & Mobile
User Friction High (Clicking pictures) Low (Invisible) None (Deterministic)
Decision Latency Variable (Depends on UI) Fast (Widget-based) Sub-50ms (Edge Cache)
Infrastructure Guard Limited Base Network History Live ASN Matrix + Shodan
Data Privacy Google Tracking Private (CF Privacy) Zero PII / Stateless

Ready for Inevitable Security?

Join the organizations using Sentinel to secure their API economy.

Deploy Your Vector