Agents are only as capable as the environments they run in. Fast, reliable development environments allow agents to take ambitious, long-running tasks from start to finish.
Until now, every cloud session began with extensive setup: boot a machine, clone the repositories, and run the install script. On a large, complex repo, this just-in-time boot could take several minutes before the agent started executing.
Today we're introducing builds: ready-to-use copies of your development environment that Cursor prepares continuously in the background, at no additional cost. When you kick off an agent, it starts in a ready environment so you get a response up to 3x faster.
And when a bad commit or dependency update breaks your environment, agents keep using the last successful build. Your work continues uninterrupted while you debug in the background.
Faster boot times








