Sentinel
Sentinel is one autonomous agent that can do many things out of the box: browser automation, scheduling, coding workflows, and operations tasks, all with strong controls and a great UI.
Sentinel is an open source autonomous agent platform built by ARAIS. It combines a custom Python agent runtime, structured persistent memory, browser automation, a permissions and approval system, and a clean UI into one self hosted stack you can boot quickly.
Why teams use Sentinel
| Capability | What you get |
|---|---|
| One agent, many workflows | The same Sentinel agent can browse sites, run scheduled checks, write code tasks, and coordinate work |
| Built in browser automation | Playwright tools plus live VNC view for visibility |
| Built in scheduling | Cron and heartbeat triggers for recurring runs |
| Built in memory | Hierarchical persistent memory across sessions |
| Built in controls | Permission policies, approvals, audit trail, and estop levels |
| Built in UI | Session UI, approvals queue, logs, and operational controls |
Two systems, one stack
Sentinel
The agent runtime and user interface. Handles the loop, sessions, memory, triggers, tools, and browser execution.
araiOS
The control plane underneath Sentinel. Handles modules, permission policies, approvals, platform auth, and coordination APIs.
Sentinel is the agent. araiOS defines what the agent can access and how actions are controlled.