Most agent tools focus on the keys: who can call what, and how to keep those credentials safe. QuietOS focuses on the hands: what an agent is allowed to do, moment by moment, with a human still in charge.
QuietOS is an MIT-licensed runtime governor for AI agents. The brain proposes; QuietOS disposes. Actions routed through the governor receive a tiered decision: allow, escalate, or block. Escalated actions are held for approval, and the harness references the stored call when resuming. The phone bridge authenticates approval replies with HMAC-SHA256. The creator’s public red-team proof log records findings and fixes.
It was built and red-teamed on a Motorola phone with 4GB of RAM, because governance that only works on a server farm is not governance most builders can actually use.
QuietOS is for builders who want agents that do real work without handing them the run of the place: developers, small teams, and anyone who wants a human tap to stay the final gate on consequential actions such as sends, bookings, and spending.
The keys matter. The hands matter more. QuietOS governs the hands.