Preview URLs

Expose sandbox ports from the CLI

Exposing a Port

Create a public HTTPS URL that proxies traffic to a port inside your sandbox:

oc preview create sb-abc123 --port 3000
# → hostname: sb-abc123-p3000.preview.opencomputer.dev

Sharing a Dev Server

Start a server inside the sandbox, expose it, and share the URL:

# Start a dev server in the background
oc exec sb-abc123 -- bash -c 'cd /app && npm run dev &'

# Expose port 3000
oc preview create sb-abc123 --port 3000

# Get the URL
oc preview list sb-abc123

Multiple Ports

Expose multiple services from the same sandbox:

oc preview create sb-abc123 --port 3000  # Frontend
oc preview create sb-abc123 --port 8080  # API server

oc preview list sb-abc123
# PORT  HOSTNAME                                      SSL     CREATED
# 3000  sb-abc123-p3000.preview.opencomputer.dev      active  ...
# 8080  sb-abc123-p8080.preview.opencomputer.dev      active  ...

Custom Domains

Pass --domain to use your own domain. DNS must point to OpenComputer’s ingress, and the domain must be verified in the dashboard. SSL is provisioned automatically.

oc preview create sb-abc123 --port 3000 --domain preview.myapp.com

Cleanup

oc preview delete sb-abc123 3000

Preview URLs persist across hibernation/wake cycles — no need to re-create them.

SDK usage: Preview URLs. Full flags: CLI Reference.