Clipboard History

Clipboard History keeps a scrollable record of everything you copy on your Android device. Tap any entry to copy it back to the system clipboard. When your Stealth account is linked, you can also mirror the clipboard between Android, Windows, and other linked devices.

Two Independent Toggles

The Clipboard tool is driven by two settings that you can turn on independently. Both default to off.

You can run with either toggle alone. With only Track Clipboard on, the history stays Android-only. With only Cross-Device Sync on, you receive remote entries without recording your own copies. Both toggles are also exposed under App Settings → Stealth Account and stay in sync with this screen.

Using the History

• Tap a row to copy that clip back to the system clipboard. Image clips open a preview dialog with a Save button that writes to Pictures/Stealth Clipboard.
• Copy icon on a row to copy without opening the preview.
• Delete icon to remove an entry. If the entry was synced, a tombstone is sent so it is removed from your other devices too.
• Refresh button (top right) to push pending local entries and pull fresh entries from your linked devices.
• Source chip on each row marks where the clip came from (Windows, iOS, or Android).

Capture Path

The settings screen shows a status banner that reflects how the clipboard is being captured right now:

• Off. Both toggles are disabled.
• Foreground only (yellow). Capture works only while Stealth is the focused app. Android 10+ silently blocks getPrimaryClip() from background processes, so this is the system-imposed default.
• Background (green). The Stealth Service (Shizuku-paired) is granted, so the background clipboard monitor service can read every copy you make in any app. The monitor uses a push listener registered through the Stealth Service binder and falls back to a poll if the listener cannot attach.

Stealth Copy (Selection Capture)

Whenever you select text in any app, Android's text-selection toolbar shows a Stealth Copy action alongside Copy / Share / Translate. Tap it to:

1. Save the highlighted text directly into your local Stealth Clipboard history.
2. Copy it to the system clipboard at the same time, so a normal Paste in any app still works.
3. If Cross-Device Sync is on, push the entry through to your linked Stealth devices immediately. You will see a "Synced to your linked devices" toast when the push succeeds.

Stealth Copy is the recommended way to grab specific snippets when you do not want to enable always-on background capture. It also works without the Stealth Service installed, because the user explicitly invokes it for that one selection.

Stealth Copy also accepts text shared into Stealth via the system Share sheet (Share → Stealth Copy), so you can capture from apps whose selection toolbars are restricted.

Cross-Device Sync

Cross-device sync rides on the same Stealth account API as Vault and Notes sync. Captured entries are encrypted with your account master key, pushed to /api/sync/items in the clipboard scope, and pulled back on every other linked device.

• End-to-end encrypted with your Stealth account master key
• Local pushes are debounced and chunked (up to 400 items per request)
• Per-account dedupe set so the same entry is never re-pushed
• Server retains a per-account "pushed" cap of 5,000 item IDs to prevent re-sends
• The sync toggle is disabled until you have linked a Stealth account

Settings

Home Screen Widget

Stealth ships a Clipboard widget that surfaces your most recent entries directly on the home screen for one-tap re-copy.

Why Use Clipboard History

Stop losing copies. Get back any text or image you copied earlier today, this week, or this month, depending on your retention setting.

Cross-device. Copy a link on your phone and paste it on Stealth for Windows seconds later.

You decide what leaves the device. Both capture and sync are off by default, and they are independent, so you can keep history local-only or receive without recording.