Every tool call, refusal, approval and rejection lands here as it happens.
Built-in agentvia document.modelContext
This panel drives the same nine tools an agent browser would. Use it if you are not in ChatGPT or a WebMCP enabled Chrome. Every call it makes appears in the activity log on the left.
ConstraintCanvas is built for a desktop window. Below about 1100 px the canvas and the rulebook cannot both stay legible, so the page scrolls sideways rather than reflowing. Widen the window for the intended layout.