Sandock

Sandock provides Docker‑based sandboxes that stay running for extended periods, allowing coding agents to execute code in an isolated environment with persistent, SSD‑backed storage that is fully POSIX‑compatible. The platform launches containers with sub‑second cold starts, configurable CPU, memory and storage limits, and real‑time output streaming for languages such as JavaScript, TypeScript, Python and shell commands.

Developers interact with Sandock through an SDK‑first API available in JavaScript, TypeScript and Python, enabling them to create a sandbox, execute code, and retrieve results with just a few lines of code. The service also supplies usage monitoring, automatic stopping on inactivity, and a dashboard that shows running sandboxes, volume usage and API key activity.

The tool targets AI‑agent developers, MCP server builders, educators and DevOps engineers who need secure, reproducible execution environments for code that requires persistent files and predictable resources, while avoiding the overhead of full virtual machines.