Teaching, workshops and interviews

Why it pays

• Everyone starts equal One template means no “works on my machine” in the first hour.
• Help without screen-sharing A read-only spectator view of the desktop shows what the student sees.
• Costs you can predict A budget per class, and auto-stop at the end of the session.

Step by step

1. Build the course template

   Install everything the class needs, then save it.

   CLI

   harebox new --name course
   harebox exec current -- ./install-course.sh
   harebox template save current --name course-2026

2. Start one sandbox per seat

   Label them with the class, with a three-hour auto-stop.

   CLI

   harebox new --from course-2026 --count 30 --label class=nov --ttl 10800

   Python

   hb.create_sandbox_batch(body={"template": "course-2026", "count": 30,
                                  "labels": {"class": "nov"}, "ttl_seconds": 10800})

   TypeScript

   await hb.createSandboxBatch({ body: { template: "course-2026", count: 30,
     labels: { class: "nov" }, ttl_seconds: 10800 } });

3. Cap the class, and watch when asked

   A budget on the class label, and a spectator view of one desktop.

   CLI

   harebox budget new --limit 20 --scope label:class=nov --action stop
   harebox desktop STUDENT_ID --view spectator

Tips

• Give each student a scoped key limited to their own sandbox.
• For interviews, fork a prepared exercise so every candidate starts at the same point.
• Delete the class's sandboxes afterwards, or keep them stopped for 14 days at no cost.