Sentinel

Sentinel is an open source autonomous agent platform built by ARAIS. It is presented as one agent that can handle browser automation, scheduling, coding workflows, and operations tasks, with strong controls and a clean UI. The stack is self hosted and combines a custom Python agent runtime, structured persistent memory, browser automation, a permissions and approval system, and a user interface.

Its documented capabilities center on running one agent across several kinds of work. The same Sentinel agent can browse sites, run scheduled checks, write code tasks, and coordinate work. Browser automation is built in through Playwright tools and a live VNC view for visibility. Scheduling uses cron and heartbeat triggers for recurring runs, while memory is described as hierarchical persistent memory across sessions.

Controls are a major part of the system. Sentinel includes permission policies, an approvals queue, an audit trail, and estop levels. The interface provides session UI, approvals queue, logs, and operational controls. The documentation also separates Sentinel from araiOS: Sentinel is the agent runtime and user interface, while araiOS is the control plane underneath it, handling modules, permission policies, approvals, platform auth, and coordination APIs.

The product is described as a self hosted stack that can be booted quickly. It is open source and licensed under AGPL-3.0. The documentation also refers to installation, a CLI reference, module creation, permissions, Telegram integration, and a multi-instance reference, but the core description remains a single autonomous agent system for teams that need automation with oversight.