NEW Browser-first JavaScript agent runtime

Build agents that run anywhere

A lightweight agent runtime for the browser. Wire up conversations, long-running tasks, traces, and replayable records — all from a single JavaScript bundle.

Launch AI Chatbox Open Long Task Lab

Zero install · runs in any modern browser

Two ways to explore

Pick a workspace to see the runtime in action.

Chat workspace

AI Chatbox

Try the conversational workspace — provider settings, skills, message flow, and a live runtime inspector. Browser-first, no backend required.

Open chatbox Long-running tasks

Long Task Lab

Run extended agent missions with trace views, workspace output, exportable records, and replay-oriented diagnostics for deeper inspection.

Enter the lab