Notes from the execution layer.
Deep dives into agent infrastructure, multi-OS sandboxing, and the engineering behind sub-second environments.
Engineering
How we start a Linux microVM in under 90ms
Cold start is a product feature, not an implementation detail. A walk through the snapshot format, the warm pool, and where the remaining milliseconds actually go.
8 min read
AI Cloud Agents
Agents need more than a text model
A model that can only emit tokens cannot verify its own work. Giving agents a real machine — with a filesystem, a network, and a screen — changes what they can finish.
6 min read
Product & Pricing
Why you should not pay for idle
Per-hour billing punishes the bursty, unpredictable shape of agent workloads. Here is the case for paused sandboxes that cost nothing and resume in milliseconds.
5 min read