Real-time blocking
Rules execute in milliseconds to block API abuse inline without noticeable delay.
Headless API protection
Segmentation
Define API abuse using custom logic
Castle lets you use advanced filtering, real-time velocity queries, and custom lists to segment out API abuse with high precision.
Automation
Action on API abuse in real-time
Rules execute in milliseconds so you can adapt the user experience based on risk in real time, without slowing legitimate users.
Real-time decisions
Assessments of data like user count per device or hourly failed logins executed in the blink of an eye.
Inline blocking
Initiate request blocks or step-up verifications anywhere in your app without disrupting the user experience.
Alerts & notifications
Ensure your team and users stay informed with triggered Slack notifications or webhooks.
Analytics
A holistic view of API abuse
Use BI-grade analytics to expose API abuse attacks, unravel fraud rings, and investigate patterns with precision at any scale.
Enrichment
Pinpoint API abuse
Every interaction is enriched with device intelligence, risk scores, and location data you can use in rules and analytics.
Risk Scores
Out of the box risk scores for account abuse, account takeover, and bot abuse.
Velocities
Compute personalized signals based on real-time metrics like counts, sums, averages, and more.
Device fingerprinting
Persistent device identifiers resilient to storage resets and resistant to privacy plug-ins.
Bot detection
Identify bot actions via bot scores, headless indicators, or velocity and rate limit checks.
Get started
Create your free account today
Start with a free quota, with transparent pricing that scales when you do.