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Version: 1.3.x

v1.3.1

Release Date​

Mar 10, 2026

SDK​

New Features​

Sandbox Client​

  • NEW: Support specifying sandbox_id when creating sandboxes via SDK (#607)
  • NEW: cpu_preemption configuration option in SDK sandbox client for CPU preemption control (#597)

Admin​

New Features​

Sandbox​

  • NEW: CPU preemption support for sandboxes, allowing configurable CPU resource preemption policies (#597)
  • NEW: Standard spec sandbox creation with use_standard_spec_only configuration to enforce standardized resource specifications (#603)

Scheduler​

  • NEW: Container cleanup scheduled task to automatically remove stopped Docker containers older than a configurable age threshold (#604)
  • NEW: File cleanup scheduled task with configurable target directories, file age limits, file size thresholds, and directory/file exclusion rules (#584)

Enhancements​

Observability​

  • Sandbox lifespan response time (RT) metrics for monitoring sandbox lifecycle duration (#605)

Configuration​

  • Add remove_container_enabled configuration option to control whether containers are removed after sandbox destruction (#604)