Notis Desktop Use

Notis Desktop Use Skill

Use this skill when a task must operate the user's real Mac — capture what is on screen, inspect a native app's UI, click buttons, type, drive menus, or move windows. The engine is Peekaboo, a signed, notarized macOS automation CLI built on a Swift core.

This is GUI control of the user's own computer. It is not browser automation and it is not a sandbox. For web pages use notis-browser-control. For an isolated, reproducible environment use the Vercel Sandbox. Peekaboo needs the live macOS Aqua session, the screen, and TCC permissions, so it only runs on the user's local_shell.

Step 0 — Switch to the LOCAL shell FIRST (mandatory)

Peekaboo controls the user's physical Mac, so every command must run on the local shell (the Notis desktop bridge), never the Vercel sandbox. Shell calls default to sandbox_shell — if you skip this step your peekaboo command runs in /vercel/sandbox, where Peekaboo does not exist and cannot touch the Mac.

Before any peekaboo command, call set_shell_mode with mode: "local_shell".

• If it succeeds, all subsequent shell calls run on the user's Mac. Proceed.
• Your Computer is available on every plan, including Free. If this call unexpectedly returns entitlement_upgrade_required, report the access-policy mismatch and stop; do not turn it into Ultra upgrade guidance. If it returns entitlement_check_unavailable, ask the user to retry.
• If it returns an error that the Notis desktop app is not connected, tell the user to open the Notis desktop app and turn on Your Computer (computer use) in settings, then stop. Do not run peekaboo in the sandbox and do not fall back to the browser tools to fake desktop control.

Never cd /vercel/sandbox or assume a sandbox working directory — run peekaboo directly on the local shell.

Read-only status checks — shortest verified loop

For a named native app, after switching shell mode:

1. Run peekaboo permissions status --json once for this session. For an inspection of a named app, bring it into view with peekaboo app focus "APP NAME" --foreground --json before capture unless it is already visibly frontmost. This is navigation within the inspection, not permission to edit data. Do not repeatedly capture an unavailable or hidden window, or substitute a menu-bar capture for that app's contents.
2. Capture the named app directly: peekaboo see --app "APP NAME" --json. Request max_output_length: 200000 on this shell call. Read data.ui_elements, including static labels with role: "other", and their bounds. Status headings can appear near the END of this array, after menus and controls; cutting stdout to 30000–50000 characters can silently hide the very status text you need. Do not list every running app when the target is known.
3. If those labels establish the requested facts, report them immediately. Preserve distinctions between visible status groups and actual running agents. State collapsed, off-screen or unverified items explicitly; do not infer their status. Inspect further only for a specific missing fact.

Use the command examples here first; consult that command's --help if the installed version rejects a flag or you need an option not shown here. Do not load the full tool catalog for a simple status check. Avoid duplicate captures of the same unchanged UI and huge unfiltered JSON dumps.

For smaller text-only inspections, use peekaboo see --tree --no-screenshot --app "APP NAME" --max-elements 300 --depth 20 --json. Read data.ui_elements and any truncation warnings; a partial tree does not prove a missing item is absent. Both capture forms use --app. If semantic_scope is application_partial, the labels are app-level context, not proof of the requested window, and no reusable snapshot or mutation authority is available.

If accessibility text is insufficient, use the command-and-capture guide. A successful screenshot command only proves a file was captured: a path in shell stdout does not mean you have seen its pixels. Do not claim visual verification without an available image-reading tool. Do not use Peekaboo's --analyze as a default workaround; it requires a separately configured AI provider and adds another model loop. Report any remaining visual limitation.

Peekaboo is already installed — do not install it

The Notis desktop app installs and manages a pinned Peekaboo for you (it's on your PATH) the moment the user enables computer use. So:

• Do not run brew install, download releases, or check ~/bin/peekaboo.
• Just run peekaboo … directly once you are on the local shell.

If peekaboo --version fails on the local shell, Peekaboo has not finished installing — tell the user to toggle Your Computer off and back on in the Notis desktop settings (which triggers the install), then retry. Do not try to install it yourself.

One plain command per call — no chaining

Run a single peekaboo invocation per shell call. Do not combine it with &&, ||, ;, pipes (|), redirects, or cd. Plain peekaboo commands auto-run on the local shell without an approval prompt; chained or piped commands lose that and get blocked or prompt the user. Parse output in a later step with --json instead of piping inline.

# Good — runs immediately:
peekaboo --version
peekaboo see --json

# Bad — chained/piped, will be blocked or prompt:
~/bin/peekaboo --version || peekaboo --version
peekaboo app list --json | python3 -c '...'

Permissions Are Mandatory — Check Before Acting

Peekaboo cannot capture or automate without macOS TCC grants. Always check permissions first and surface missing grants to the user; you cannot grant them programmatically.

peekaboo permissions status --json
peekaboo permissions status --all-sources   # compare Bridge host vs local CLI

What each capability needs (System Settings → Privacy & Security):

• Screen Recording → required for screenshots and pixel capture. Enable the execution host identified by the permissions result. After a managed Desktop upgrade, re-check that the enabled entry points at the current host.
• Accessibility → required for clicks, typing, key presses, and window control and AX inspection. Enable the execution host reported by the check.
• Event Synthesizing → peekaboo permissions request event-synthesizing (add --no-remote to request it for the local CLI process). Enables receipt-targeted typing/key chords/paste without stealing focus. Request it only when permission setup is authorized; do not change grants during an ordinary read-only inspection.

If a needed grant is missing, tell the user exactly which toggle to flip and re-run peekaboo permissions status --json before continuing. Do not loop on failed captures.

Remote / Background Sessions

On SSH, LaunchAgent, cron, or other background launchd sessions, prefer the Peekaboo Bridge path even when TCC appears granted — CoreGraphics can report success while returning only the desktop wallpaper or a redacted image. On remote Macs, Screen Recording may be blocked while clicks and typing still work through Accessibility; when the target UI is otherwise knowable, continue with authorized clicks / see --tree --no-screenshot instead of giving up.

Coordinate clicks: exact snapshot or explicit foreground

Without a fresh exact-window snapshot, a coordinate click needs explicit foreground delivery. Use it only when focusing and interacting with that app are within the user's task. Focus the exact window, then use global screen points with --foreground:

peekaboo window focus --app "Dia" --window-id 118166 --foreground --json
peekaboo click --at 672,607 --global --app "Dia" --window-id 118166 --foreground --json

Prefer clicking by element ID/query when see/see --tree give you one. Use coordinates only when they don't (see next section).

Browser / web apps: use screenshots when accessibility is insufficient

Some browser/web-app surfaces expose no useful accessibility text even when the page is visible. If one targeted inspection is empty or incomplete, do not loop on see/see --tree — switch to an available vision path:

1. Capture the window: peekaboo see --no-elements --app "Dia" --window-id <id> --mode window --path /tmp/shot.png --json (get <id> from peekaboo window list --app "Dia" --json).
2. Locate the control visually in that screenshot.
3. Convert screenshot pixels to global logical screen points using the returned coordinate_context (including image scale and viewport origin). Do not assume Retina pixels equal screen points or use stale window bounds. If the mapping is missing or uncertain, recapture rather than guessing.
4. Focus the exact window and click --at X,Y --global --app "Dia" --window-id <id> --foreground --json (above), then re-see to confirm the requested result. Background coordinates instead require the explicit fresh exact-window snapshot; never silently switch to foreground on refusal.

Keyboard shortcuts like space do not reliably control web players (in a browser, space scrolls the page) — click the actual on-screen play/pause control instead.

Safety Rules

• Perform UI actions only within the user's requested task. Read-only inspection may focus the named app or expand its read-only status groups, unless the user forbids navigation. It does not authorize edits, sends, stopping agents or changing settings. Destructive actions need explicit authorization.
• Treat the screen as private. Do not exfiltrate screenshots or on-screen content beyond what the task requires, and do not capture and forward unrelated windows.
• Avoid actions that trigger irreversible system dialogs (delete confirmations, purchases, sends) without explicit user confirmation. When in doubt, capture the dialog with peekaboo dialog list and ask before clicking.
• Prefer --no-remote when testing local TCC behavior; use the Bridge path for background/remote captures.

Anti-Patterns

• Do not run peekaboo before calling set_shell_mode with local_shell. The default sandbox_shell runs it in /vercel/sandbox, where Peekaboo does not exist — the command "fails" and looks like a permissions problem when it isn't.
• Do not cd /vercel/sandbox (or any sandbox path) and do not assume a sandbox working directory. Run peekaboo directly on the local shell.
• Do not install Peekaboo (no brew install, no downloads, no ~/bin probes). The Notis desktop app already installed and manages it on your PATH.
• Do not chain peekaboo with &&, ||, ;, pipes, redirects, or cd. One plain command per call so it auto-runs without prompting.
• Do not bare-coordinate-click (peekaboo click X,Y). Use --at with a fresh exact-window snapshot or explicitly authorized --foreground targeting.
• Do not repeatedly inspect a browser page that exposes no useful accessibility text. Use an available image-reading path, or report that limitation.
• Do not rely on space/keyboard to play a web video — click the on-screen play control.
• Do not skip the permissions check. A missing grant returns wallpaper-only or empty captures, not an obvious error.
• Do not reuse element IDs across snapshots, or act without a fresh see. For snapshot-targeted actions, copy the returned data.snapshot_id into --snapshot; after that action, capture again before taking the next one.
• Do not interpret exit 0 or success: true as proof of the requested UI change. Inspect the action's effect, retry_safe, requires_fresh_observation, and any error.hint. partial, unverifiable, suspected_noop, or an uncertain failure requires observation before retry; refused is not permission to broaden targeting or enable foreground input. Read-only results may omit effect. Verify the user's intended result even after confirmed, especially for typing, key presses, and sends.
• Use this skill's command examples; consult the relevant command's --help when an example is rejected or additional flags are needed.
• Do not send unrelated input to the user's machine. Keep navigation within the requested inspection; data mutation needs its own authorization.

For command discovery and the screenshot/action loop, read command-and-capture. Local shell, permissions, fresh screenshots/element IDs, foreground targeting and user-authorized input remain mandatory regardless of which command you need.

Task guides

Read only the guide needed for this task from this skill bundle.

• Command and capture guide