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Cezar in your Sandbox

Close the laptop.The agent keeps working.

Leave a bug fix or a feature with Cezar before you head out. It coordinates the coding agents and their task queue in your Sandbox. Cezar works on every plan. Sandboxes stay online 24/7, so the work can continue after you close your laptop.

Try for free

Free trial for 7 days

in AI tokens
$5
of runtime (5 HC)
≈6 hours

Animated example of Cezar building an issue tracker in Sandbox, from a task description to the running app and a branch ready for review.

Cezar in Sandbox Animated walkthrough

Connected
and ready

  • Cezar
  • Claude Code
  • Codex
  • GitHub
  • VS Code
  • OpenRouter

A question on one task can wait. The next task can start.

When an agent needs your answer, Cezar can give its free slot to the next task in the queue. Each task has its own branch, so you can review the changes separately when you return.

  1. 01 task.add()

    Describe the job

    Write a task or turn a GitHub issue into one. Give the agent the context you would give a colleague: what is wrong, what should happen and how to check it.

  2. 02 agent.start()

    Choose how it runs

    Use Claude Code or Codex with saved instructions and checks. For work you repeat, save a workflow that has one agent build and another review.

  3. 03 branch.review()

    Decide what to keep

    Read the diff and ask for a revision if something is off. Open a draft pull request when it is ready for review. You decide what gets merged.

Handle the quick questions from your phone.

Open Cezar in your phone's browser to add a task, check progress or answer an agent's question. When you sit down at your computer, the repository, terminal and preview are in the same Sandbox, ready for a closer look at the work.

  • See which tasks are running
  • Answer questions holding up a task
  • Review branches, diffs and draft pull requests

The workspace is part of the subscription.

Running an agent on your own VPS means setting up the server, exposing its interface and keeping the services alive. Every plan includes a running Sandbox with Cezar, so you can spend that time on the tasks you wanted the agent to do.

On your own VPS

In your Sandbox

Provision and configure the server

Open a ready workspace

Expose and secure the agent UI

Use Cezar inside the Sandbox

Keep the services running

Sandbox stays online 24/7

Set up an interface for tasks and reviews

Use Cezar's queue, branches and diffs

Developer Sandbox

Start with Cezar. Build at your pace.

  • Unlimited sandboxes
  • 1 developer seat
  • 75 Hardware Credits
  • $25 AI Credits Starter

Cezar is included on every plan. Your Sandbox stays online 24/7, including on Developer.

$75per seat · first month

Then $95 per seat/month with 95 HC included per seat monthly. HC and AI top-ups are sold separately. Applicable tax is shown before purchase.

Create your Sandbox

Want to try it first? Start a free trial

Free trial for 7 days

in AI tokens
$5
of runtime (5 HC)
≈6 hours