How to Manage DigitalOcean Harness Runtime Sessions
List, show, pause, resume, attach, detach, cancel a run, log, and remove Harness Runtime sessions with doctl harness-runtime or the Control Panel.
Work with DigitalOcean Harness Runtime Sessionspublic
Generated on 15 Nov 2026
DigitalOcean Harness Runtime provides managed, hardware-isolated microVM sandboxes with built-in tools such as Chromium to run harnesses and execute arbitrary code. Rich lifecycle APIs preserve conversational history and working state across sessions, letting you pause, resume, and fork work to control costs and adapt to the nonlinear nature of agentic workflows. Scale complete agents such as Claude Code or use sandboxes independently for code execution, all through the same service. See What You Can Build for example use cases.
How to Connect Through the Codex CLI Proxy
Start a local doctl proxy so your local Codex CLI drives a hosted Codex session.
How to Upload and Download Session Files
Upload files into a sandbox and download agent output to your local machine.
How to Forward Sandbox Ports
Open a local tunnel to a port inside a session’s sandbox with doctl harness-runtime port-forward.
How to Checkpoint, Fork, and Roll Back Sessions
Save a Harness Runtime session as a checkpoint, then fork it into parallel copies or roll the same session back in place.
How to Use Persistent Workspaces with Harness Runtime
Create a persistent workspace, attach it to a Harness Runtime session, and reuse its files in a new session after you remove the old one.
Use the iOS App
Follow, steer, and approve Harness Runtime sessions from your iPhone with the Cuttlefish app.