Today I'm announcing Workers IO to solve the slowest part of engineering, verification! AI agents can now write years’ worth of code in days, but it still takes significant engineering effort to verify what’s being built. It’s impossible to predict all scenarios that could lead to a failure and that’s why most expensive failures are found in production. Workers IO runs millions of simulated production scenarios on your entire system, including dependencies. These simulations run inside a deterministic hypervisor which injects faults like network delays, disk errors, clock skew, and process failures to verify how your system handles these conditions. Deterministic execution allows us to systematically explore the state space of the system and perfectly reproduce failures. We are already helping customers do years worth of production hardening in days and build confidence in what they’re shipping. If you are working on systems that you can never afford to break, DM me and we can help you battle test them!