Crabbox Apps

Apps in Crabbox

"Open in Crabbox and show me" means launch the working application and open its view in the requesting user's chat side panel. Finish both operations.

Use the enabled crabbox tool to inspect the current attachment before creating one. Reuse that environment for follow-ups. profiles discovers configured profiles; choose one compatible with the application. Native desktop viewing and CUA require a desktop-enabled profile. Never silently substitute another OS for an application that requires a particular platform.

create attaches the machine to this conversation without moving the agent or its primary workspace. For an open-and-show request with the screen capability available, pass presentation: "desktop" for a native app or presentation: "portal" for a web app. This opens the right sidebar with machine startup progress before provisioning finishes. Its result identifies the environment. Use exec for commands on that environment; the ordinary shell still has its existing target. Copy or recreate the task's required files explicitly. Do not assume the local project was synchronized.

Native apps

1. Install or build the app using remote exec as needed.
2. Launch it with exec and background: true. Retain its processId for status, logs, and stop. Do not detach a shell process to escape lifecycle ownership.
3. When the computer tool is available, select the returned environmentId and observe the application. CUA operates on the same desktop shown by VNC.
4. When the screen tool is available, call desktop_show with that environmentId and dock: "right". Verify the app is ready before claiming success. An allocated machine or a blank desktop alone is insufficient.

Web apps

1. When the portal tool is available, open a portal for the environment and application's port using environmentId. Keep its portal ID and public URL.
2. Start the web server with remote exec, background: true, and the application's PORT and PUBLIC_URL set explicitly. Verify it responds.
3. When the screen tool is available, use portal_show with the returned portalId and dock: "right". Show the web application directly in the portal.
4. For CUA testing, use the attached environment's browser against the same server. The remote browser and the user's portal have separate cookies and browser state; do not assume they share a login or page navigation.

If an essential tool or desktop capability is unavailable, report the missing capability and the actual completed state. A portal that the user's browser cannot reach is not a completed preview. Preserve the separate-origin portal transport; never expose arbitrary application scripts on the Gateway origin.

Follow-ups and cleanup

Reopen the current environment or portal for "show me again". A viewer reconnect must not allocate another machine. Before showing a remembered portal, confirm it still exists with portal list; portal IDs can expire across Gateway restarts. If it is gone, open a replacement for the same environment and running app port, then show and verify that new portal. Refresh the app's PUBLIC_URL if it relies on that URL for links or redirects. Use process_status to inspect a launched app and process_stop to stop just that process. stop releases the entire temporary environment. Closing the side panel only hides the view.

Observe again before CUA input. When the user takes desktop control, stop sending input until they release control; screenshot reads may continue. Never work around a control-ownership refusal with shell-injected clicks.

The machine is disposable and follows its configured lifetime. Preserve requested outputs before stopping it; the conversation transcript alone is not a backup of remote files.