# Sphere Engine

> Sphere Engine runs code, agents, and exams in isolated machines, and grades programming skills with Compilers, Problems, and Containers.

## Sandboxes

- [Sandboxes](https://stag.sphere-engine.com/sandboxes.md): Isolated Linux machines on demand, for one-shot runs and longer sessions.
- [AI agents](https://stag.sphere-engine.com/sandboxes/agents.md): The agent works inside the machine. Your app sets the limits and collects the patch.
- [Untrusted code](https://stag.sphere-engine.com/sandboxes/code.md): Run untrusted code next to your app, not inside it.
- [Workspaces](https://stag.sphere-engine.com/sandboxes/workspaces.md): A session that stays up for services, a preview, a browser, or a desktop.
- [Security](https://stag.sphere-engine.com/security.md): A separate machine, resource limits, a named network policy, and secrets kept out of the command line.

## Assessment

- [Assessment](https://stag.sphere-engine.com/assessment): Teach, hire, and grade programming skills inside your product.
- [Compilers](https://stag.sphere-engine.com/compilers): Compile and run source code inside your application.
- [Problems](https://stag.sphere-engine.com/problems): Programming problems with tests, scores, and rankings.
- [Containers](https://stag.sphere-engine.com/containers): An online IDE and a real project stack inside your product.
- [Product comparison](https://stag.sphere-engine.com/comparison): Sandboxes, Compilers, Problems, and Containers, and which one owns the job.

## Commercial

- [Pricing](https://stag.sphere-engine.com/pricing.md): Start on your own, or talk to us when you need to plan the volume.
- [Enterprise](https://stag.sphere-engine.com/enterprise): One contract for grading, teaching, and running agents, with dedicated capacity and on-premise.
- [Contact](https://stag.sphere-engine.com/contact): Talk to the team about enterprise, assessment pricing, or a first sandbox.
- [Sign up](https://stag.sphere-engine.com/signup): Create an account and run a sandbox.

## Docs

- [Documentation](https://docs.sphere-engine.com/): Guides for Compilers, Problems, and Containers.
- [Compilers](https://docs.sphere-engine.com/compilers/overview): Module overview.
- [Problems](https://docs.sphere-engine.com/problems/overview): Module overview.
- [Containers](https://docs.sphere-engine.com/containers/overview): Module overview.
- [Compilers API](https://docs.sphere-engine.com/compilers/api/overview-version-4): Public REST API, version 4.
- [Problems API](https://docs.sphere-engine.com/problems/api/overview-version-4): Public REST API, version 4.
- [Containers API](https://docs.sphere-engine.com/containers/api/reference-version-1): Public API reference, version 1.

## Company

- [About](https://stag.sphere-engine.com/about-us): Execution infrastructure from Sphere Research Labs since 2008.
- [Supported languages](https://stag.sphere-engine.com/supported-languages): 80+ languages in Compilers and Problems. Sandboxes run whatever is in the image.