Introducing Ephemeral Sandbox Deployments for Mastra Server and Studio

You can now deploy your Mastra project (Server and Studio) to an ephemeral sandbox — manually or programmatically, with configurable runtime limits. Share previews with teammates, let agents deploy autonomously to verify results, or run per-user instances isolated from your infrastructure.

A sandbox deploy gives you two public URLs to test your application. Open Studio to chat with your agents, or hit /api to test the endpoints directly.

We’re starting today with E2B, Daytona, and Vercel Sandbox, with more providers to follow.

Before sandbox deployments, hosting a Mastra project meant working through the full development lifecycle — create a PR, push a deploy, share a link. Now you can skip the pipeline and deploy straight to a sandbox. Subsequent deployments reconnect to the existing sandbox without reinstalling dependencies.