Every AI engineering workshop starts the same way. Someone is missing an API key. Someone has the wrong Node version. Someone's laptop refuses to run Docker. The first hour goes to setup. The work starts after lunch.
We built Open Mercato Sandboxes to delete that hour. Today they are generally available.
What a Sandbox is
A computer in your browser, billed per minute of use. Inside: every tool you need for AI engineering, already wired together.
- Coding agents: Codex and Claude, ready on first login.
- Editor: VS Code in the browser, with diff view and logs.
- Git: commit, branch, export to GitHub.
- Preview and sharing: a public or password-protected link to your running app.
- Any stack: TypeScript, Python, .NET, Go. Bring your own runtime.
- App templates: pre-configured sandboxes for specific applications, for example Open Mercato CRM.
You sign up, get free credits for hardware and AI, and start working in under 30 seconds. No install. No config. No "works on my machine".
Four ways to use it
1. A coding agent that works while your laptop is closed
Some of us stopped carrying an open laptop everywhere. The agent runs in the Sandbox 24/7. You check progress from your phone, review the diff, accept or reject. The machine keeps going.
Start here: openmercatocloud.com/247agentic-cear
2. Open Mercato demo you can actually modify
Our official demo is gone. Sandboxes replaced it. Instead of clicking through a read-only instance, you spin up a full Open Mercato CRM, change the code, add a module, break something, fix it. That is a better demo than any slide deck.
Start here: openmercatocloud.com/demo
3. Build any app, in any technology
You do not need Open Mercato to use Sandboxes. Pick TypeScript, Python, .NET or Go. Point the agent at your repo. Ship.
Start here: openmercatocloud.com/allstacks
4. Test the Jev model for free
Jev is the model everyone is talking about and few people have access to. Sandboxes give you that access at no charge.
Start here: openmercatocloud.com/jev
Pricing
Per minute, per actual usage. You pay for the minutes the machine runs and the AI tokens you burn. No seats, no monthly subscription, no idle cost. Every new account starts with free credits for both hardware and AI.
You can also bring your own Anthropic or OpenAI subscription and use it inside the Sandbox.
Bonus for AiTechLeaders students
If you buy the AiTechLeaders course (polish only for now), you get Sandboxes free for the entire length of the program. The whole curriculum and every homework assignment runs inside them. Zero setup, zero excuses.
What is next
Two things on the roadmap: CLI and SSH access, and agents that create their own Sandboxes when they need a clean environment. Partner templates for WMS and e-commerce are in progress.
Start now
Sign up at openmercatocloud.com. Free credits, under 30 seconds to a running environment.