Rules execute in milliseconds to block inline without noticeable delay.
Advanced aggregations over any field and time range at blazing speed.
Alerts & automation
Trigger webhooks, Slack notifications, or put entities into custom lists
Quickly backtest and tweak policies to deploy with confidence
Run flexible velocity rules in real-time
Castle's no-code rules engine empowers you to proactively prevent abuse by taking real-time action. Even as trigger conditions become more complex, it returns responses in milliseconds, ensuring seamless performance.
Alert and automate at scale
Implement webhooks, Slack alerts, or leverage the versatile Lists feature to automate abuse prevention in your application, regardless of its size. Keep your team notified about spikes in attacks, alert end-users of suspicious login attempts, and streamline user reviews.
Simulate complex logic instantly
Experience the power of rule logic tweaking: see immediate impact, speed up iteration and experimentation, and gain the confidence to deploy rules seamlessly without unintentionally blocking legitimate users.