How to Claim $250 in Free Docker Cloud Sandbox Credits

Hunting for a way to run your AI coding agents without filling up your own machine? Docker is handing out $250 in Docker Cloud Sandbox credits, and it works with Claude Code, OpenAI Codex, OpenCode and Hermes.

That $250 lets those agents run in isolated cloud environments, where they can install dependencies, edit code and run tests without touching your other projects. The catch: a credit card is required, and anything past the credits is billed.

Tutorial

1. Open the promotional page for this Docker Cloud Sandbox offer.
2. Sign up for a Docker account, or log in if you already have one.
3. Follow the promotional enrollment instructions on the page.
4. Add a valid credit card. It is required at signup, even though the credits themselves cost nothing.
5. Activate your promotional credits.
6. Start running your AI agents inside Docker Cloud Sandboxes. Each agent gets its own sandbox, and you can drive them from the CLI or the web console. You can also connect MCP tools and manage secrets there.

Wrapping Up

The offer runs until January 31, 2027, and availability and eligibility can vary. Before you point a busy agent at it, read which services actually qualify for the credits and set a billing limit, because usage past your credits may be charged. If you already run Claude Code, Codex or OpenCode daily, this is a cheap way to try several agents in parallel without cluttering your local setup.