Work
Draw the System — cloud
The hosted half of Draw the System — bring your own agent, I keep the workspace.
The open-source version lives on your disk and asks you to run it. The cloud version does the running: sessions, canvases, transcripts, and progress kept server-side, so practice on a laptop picks up on a desktop.
What it doesn't do is sell you tokens. You connect the agent subscription you already have over a remote MCP server, and your agent drives the session — reading the scenario, keeping the clock, speaking, grading. The bill for the model stays where it already was; I run storage and state.
The interviewer's hidden notes are a nice illustration of the trade. They go to the agent and never to a candidate-facing route, which is the same trust model the open-source version gets for free by putting the file on your own machine.
Built on the template. Same shared brain as the open-source repo, linked in live rather than copied, so a fix to the rubric lands in both.