---
title: "Daytona cloud sandboxes and TOML run config"
date: "2026-02-26"
---

## Daytona cloud sandboxes

Workflows can now execute in Daytona cloud environments — full dev containers with SSH access, persistent storage, and network isolation. Previously, Docker was the only sandbox option, which meant running everything locally. Daytona moves execution to the cloud, freeing up your machine and providing a more production-like environment.

```bash
fabro run start --execution-env daytona my-workflow.fabro
```

## TOML run configuration

Long chains of CLI flags are hard to remember and impossible to version-control. Run settings now live in a TOML file with `[execution]` for sandbox config and `[vars]` for DOT source parameterization.

```toml title="run.toml"
[execution]
environment = "daytona"

[vars]
repo = "https://github.com/example/project"
branch = "main"
language = "typescript"
```

Use `$variable` placeholders in DOT workflow sources and supply values through the TOML config, making workflows reusable across different projects and environments.