As part of Roblox’s open-source safety toolkit, Sentinel is an early-warning system designed to identify subtle, hard-to-detect communication patterns that could indicate potential grooming.

Roblox says the system has led the company to submit 1,200 reports of potential attempts at child exploitation to the National Center for Missing and Exploited Children in the first half of 2025.

As part of Roblox’s open-source safety toolkit, Sentinel is an early-warning system designed to identify subtle, hard-to-detect communication patterns that could indicate potential grooming.