Cursor: Cloud Agents Start 3x Faster with Builds

Cursor: Cloud Agents Start 3x Faster with Builds was released on .

Summary

Cursor Cloud Agents now start 3x faster with pre-built environments that are ready to go instead of setting up from scratch. Your repo, dependencies, and install scripts are all prepared in the background, so agents can focus on your work immediately. Check out the new Builds ...

Release Context

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Release Notes

Cloud Agents Start 3x Faster with Builds

Agents do their best work when they start in a ready environment: repos cloned, dependencies installed, and your install script already run.

This release introduces builds: ready-to-use copies of your development environment that Cursor prepares in the background. Agents boot into a ready environment instead of setting up from scratch each session. Builds are included with Cloud Agents at no additional cost.

Faster starts

Cursor runs a new build of your environment regularly. When a build succeeds, it becomes the environment future agents start from. Cursor keeps warm copies ready so the next agent does not wait. Internally, our environments now boot 10x faster, with 3x faster time to first token.

Use your install command for anything that can be prepared ahead of time. The start command still runs when you first prompt an agent and should focus on services that need to be fresh in the session.

More resilient agent runs

When a bad commit or dependency update breaks your environment, agents keep using the last successful build. The broken build never becomes active, you are notified of the issue, and your agents keep working while you debug in the background.

Build history and debugging

Each environment has a Builds tab in the Cloud Agents dashboard. You can inspect build status, logs, commit SHAs, and which build each agent run used. Agents can also inspect and manage builds using built-in tools.

Getting started

New environments use Builds automatically. For an existing environment, open it in the Cloud Agents dashboard, go to the Builds tab, and click Enable Builds. Or click Run setup agent first to test the migration and review any proposed config changes.

You can also trigger a Build manually, debug a failing Build with an agent, and control how stale Builds refresh with a configurable threshold.

Learn more in our announcement post and docs.

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