08-13-26
CursorSummary
This release introduces Builds, a new feature that prepares ready-to-use development environments in the background for faster agent startup. Builds improve resilience by ensuring agents use the last successful environment if a new build fails, and provide detailed history and debugging tools for environment management.
New Features
- Introduced Builds: ready-to-use copies of your development environment that Cursor prepares in the background, allowing agents to boot into a ready environment instead of setting up from scratch each session.
- Enabled automatic use of Builds for new environments.
- Added the ability for agents to inspect and manage builds using built-in tools.
- Enabled manual triggering of Builds.
- Enabled debugging of failing Builds with an agent.
- Enabled control over how stale Builds refresh with a configurable threshold.
Bug Fixes
- Fixed issue where a broken build would become active, ensuring agents continue using the last successful build and users are notified of build issues.
Improvements
- Environments now boot 10x faster, with 3x faster time to first token.
- Added a Builds tab in the Cloud Agents dashboard to inspect build status, logs, commit SHAs, and which build each agent run used.
- Added an option to enable Builds for existing environments via the Cloud Agents dashboard.
- Added an option to run a setup agent first to test migration and review proposed config changes before enabling Builds for existing environments.