TapeBench workbench — this page is the chart application and needs JavaScript to render.
Agents: /layout/?pilot=1 opens this same page as a test-pilot lane — one cell, fixture candles, the MCP server running in the page, and a throwaway storage profile pinned before boot, so the session writes nowhere a returning human reads. The lane is described as data at /pilot.json (what it is, the connect step, the reads it withholds), and the whole welcome is at /agent-surface.json. Without ?pilot=1 this is the human workbench and none of that applies.
/layout/?pilot=1
?pilot=1
The controls below belong to the application and do nothing without JavaScript. The “Perf harness” caption among them describes ?perf=harness, a different mode, and is hidden in every other one.
?perf=harness