Short answer
Yes. The free Aktar extension for Raycast uploads the clipboard or files selected in Finder or File Explorer, searches your upload history and browses your buckets, all from Raycast on Mac or Windows.
Install it from the Raycast Store, then run Connect to Aktar in Raycast and click Connect in the dialog Aktar shows. You need Aktar for Mac 0.18.0 or later, or Aktar for Windows 0.11.0 or later, with at least one destination.
The extension never sees your storage keys. It asks Aktar to do the work over a local connection on your computer (127.0.0.1) that is off until you connect and protected by a token kept in the Keychain on a Mac or in Credential Manager on Windows. You can turn it off any time in Settings → Integrations.