It is possible now to reliably and automatically detect and fix every bug which users are encountering on the web. This clearly hasn’t happened yet. Our mission at Replay is to bring it about.
The right observability is key to this process, as it is generally to the AI powered SDLC.
Agents need context to thrive, and observability is the context layer for agents to know how the app they are building actually behaves. When they don’t actually know what is going on, they start guessing, make mistakes, and things go downhill quickly. When they do know, they can confirm theories about the app’s behavior and stay on track.
Replay’s core technology is a time travel debugger for Chromium and Node.js. Forked versions of these runtimes capture non-deterministic inputs to the runtimes with low overhead, allowing the runtime to be replayed deterministically. Everything it did while recording can be recovered and unpacked into what is essentially a database, allowing agents to see every statement that was executed, the state at every point, every control and data dependency, and so on, with no loss of detail.
