Build the Smallest Browser AI Observatory

Wed, 02 Sep 2026 12:10:00 +0100

We are ready to make the browser’s AI lifecycle visible.

The first version will be deliberately small. It will not inspect every page, intercept arbitrary prompts, call tools, diagnose quality or persist a history. It will do five things:

create a panel inside Chrome DevTools;
report whether the Prompt API is exposed and available;
create a browser-managed language-model session with visible download progress;
stream a prompt with cancellation;
display an event trace that separates each phase.

That is already more useful than a chat demo.

DevTools Extension on Programmer.ie: Modern AI programming

Build the Smallest Browser AI Observatory