Cascade

Create a Cascade workspace

Your own Cascade app in your Sail account, ready in about a minute.

Name your workspace
Connect your Sail account
Open your app

Already have one? Manage it

Name your workspace

It names your Sail app and appears in the app's sidebar.

Workspace name

Connect Sail

Paste an API key from your Sail dashboard

Sail API key

Used once, never stored, lives only in your workspace.

How we handle your key

This page holds it in memory only. Reloading the tab clears it.
Cascade's server uses it for one call to Sail per request and keeps nothing.
It is copied into your workspace, which needs it to start a Sail sandbox for each simulator.

The workspace bills to your Sail account for the CPU, memory and disk it uses (Sail pricing). It doesn't sleep on its own yet, so pause it when you're done.

Advanced

App image

A public image built from Cascade's Dockerfile. Leave empty for the published one.

Creating your workspace

Create the Sail app
Create the sandboxPulling the app image and booting it
Start CascadeStarting the API and the S3 endpoint
Check healthWaiting for the app to answer

Total0s

Your workspace is ready

is running in your Sail account.

Open my workspace

App
S3 endpoint
Token

The token is shown only here. Copy it before you leave this page.

Run this from a Cascade checkout.

Traces a model on a Modal GPU and streams it in. See Trace a workload.

Export these, then give your agent the prompt.

It bills while it runs. Pause it when you're done.

Manage a workspace

Check on a workspace, or pause, resume or delete it.

Workspace name

Sail API key

Back

Open my workspace

This terminates the workspace and its simulators, and deletes its traces and runs. Type to confirm.

Cascade, 2026 Use the CLI instead