Prerequisites
- You need a CoreWeave AI Object Storage Access Key and Secret. If you don’t already have these credentials, you can generate them in the Cloud Console.
- Set an organization access policy.
- Download and install Cyberduck.
Installation and configuration
Before you can connect to CoreWeave AI Object Storage, install the CoreWeave connection profile in Cyberduck. The profile preconfigures the endpoint and addressing settings Cyberduck needs to talk to AI Object Storage.- Open the Cyberduck application.
-
Install the CoreWeave AI Object Storage connection profile:
- In Cyberduck’s menu bar, locate Connection Profiles:
- For macOS: Cyberduck ▸ Settings ▸ Connection Profiles.
- For Windows: Edit ▸ Preferences ▸ Connection Profiles.
- In the profiles gallery’s search field, type
CoreWeave. Search results can take a few minutes to appear. You only need to complete this step once during initial setup. - Select the checkbox next to CoreWeave AI Object Storage.
- Close Preferences.
- In Cyberduck’s menu bar, locate Connection Profiles:

Connect to CoreWeave AI Object Storage
When you open a connection from Cyberduck to AI Object Storage, you can save a bookmark for more convenient access, but it’s not required.Open a connection
- Click the Open Connection toolbar button (or File ▸ Open Connection).
- Enter your CoreWeave AI Object Storage Access Key and Secret.
- For macOS: At the bottom left, the Add to Keychain checkbox is selected by default. Clear this option if you prefer to enter your secret each time.

Save a bookmark
Bookmarks save connection settings, like a default path. When you save a bookmark in Cyberduck, it remains in your main Cyberduck browser window, labeled with its nickname and your access key.- In Cyberduck, open the Bookmark menu and select New Bookmark.
- Expand the dropdown menu at the top. Scroll to the bottom of the menu and select CoreWeave AI Object Storage.
- Give the connection a nickname.
- Optional: In macOS, you can create labels to organize and group your Cyberduck bookmarks.
- Enter your CoreWeave AI Object Storage Access Key and Secret.
- To bookmark your connection to a specific bucket, set your default path:
- Expand More Options.
- The Path field defaults to the root. Append your bucket name. For example,
/test-bucket.
- Close the bookmark dialog window. Cyberduck saves the bookmark and displays it in the browser window.
- Double-click your new bookmark. The Cyberduck browser reflects the path if you set one. Otherwise, it displays the root-level view of all your buckets.

Manage AI Object Storage resources
The following sections describe how to manage buckets and files in Cyberduck, including creating buckets and folders, uploading files, browsing and searching, and deleting resources.Create a new bucket in CoreWeave AI Object Storage
-
Open your bookmark and make sure you’re connected to AI Object Storage. The connection is successful if you see the bookmark name at the top of the window with your access key ID displayed below it, like
CWESGLIQGQWMAUXM@cwobject.com:
- Make sure no existing buckets are selected.
- Expand the Cyberduck browser window to view the Actions menu (gear icon). Expand this menu, and click New Folder. Alternatively, use File ▸ New Folder from the main menu, or right-click and select New Folder.
-
In the Create new folder dialog window, enter a name for your bucket and select the region.
Bucket naming rules
Bucket names must be globally unique and adhere to the following rules:- Length: 3 to 63 characters.
- Characters: Only lowercase letters (
a-z), numbers (0-9), and hyphens (-). No dots, uppercase letters, underscores, spaces, or other special characters. - Start and end: Must begin and end with a letter or number. Cannot start or end with a hyphen (
-). - Prohibited patterns: Cannot start with
xn--. - Reserved: Must not begin with
cw-,vip-, orlog-stitcher-ch-. Must not be the exact nameint. CoreWeave reserves these for internal use.
-
Click the Create button to create the bucket.
- If you’re not prompted to select a region, you’re creating a folder inside an existing bucket. Deselect any selected buckets before creating a new bucket.

Create a new folder
To create a new folder within a bucket:- Select your bucket in the Cyberduck browser.
- From the main Cyberduck menu, go to File ▸ New Folder. Alternatively, expand the Actions menu on the Cyberduck browser and click New Folder, or right-click and select New Folder.
-
Enter a name for the folder, and click Create:

Upload files to the newly created bucket
- Open your file explorer and browse to the files you want to upload.
- Select the files and drag them into the Cyberduck window. Hover over the newly created bucket until it’s highlighted, and then drop in the files.
-
The Transfers window shows upload progress and status:
It displays both the local file path and a path-style URL. The local path link opens the file in your file explorer. AI Object Storage doesn’t support the path-style URL, which returns an error.
Browse and search files
To browse files within a bucket:- In the root-level view, expand the carat next to the bucket name to view the subdirectories and objects.
- Alternatively, double-click the bucket and the Cyberduck browser shows only items in that bucket.
- Double-click the bucket you want to search. You now see a list of files in the bucket.
- Click the Search icon at the top of the Cyberduck browser.
- Type the search term to find files by name. Click Search to confirm in the dialog window. After a few moments, the Cyberduck browser displays your search results.

Delete resources
To delete files within a bucket:- Click into the bucket in the Cyberduck browser.
- Select the files you want to delete. Use command-click or right-click and select Delete.
-
The dialog window lists the items you want to delete. Click the Delete button to confirm:

- In the main Cyberduck browser, select the buckets you want to delete.
- Command-click or right-click and select Delete.
- The dialog window lists the items you want to delete. Click the Delete button to confirm.