Thursday, 26th June 2025
Two interesting new products for running code in a sandbox today.
Cloudflare launched their Containers product in open beta, and added a new Sandbox library for Cloudflare Workers that can run commands in a "secure, container-based environment":
import { getSandbox } from "@cloudflare/sandbox";
const sandbox = getSandbox(env.Sandbox, "my-sandbox");
const output = sandbox.exec("ls", ["-la"]);Vercel shipped a similar feature, introduced in Run untrusted code with Vercel Sandbox, which enables code that looks like this:
import { Sandbox } from "@vercel/sandbox";
const sandbox = await Sandbox.create();
await sandbox.writeFiles([
{ path: "script.js", stream: Buffer.from(result.text) },
]);
await sandbox.runCommand({
cmd: "node",
args: ["script.js"],
stdout: process.stdout,
stderr: process.stderr,
});In both cases a major intended use-case is safely executing code that has been created by an LLM.