CapNote
Lives in the menu bar with no Dock icon. A global shortcut summons a small window from anywhere, and ⌘↩ sends the note and closes it.
Settings rotate into that same window with a 3D flip: the API token, kept in the macOS Keychain, the target space, whether the window opens centred on screen or at the cursor, and an optional separator and timestamp.
It started as a BetterTouchTool setup that did the same thing, rebuilt as its own app.
Built with Swift, SwiftUI, macOS.