@monotykamary/pi-computer-use

---

macOS computer-use for Pi via harness server and CLI.

pi-computer-use gives Pi agents a semantic computer-use surface for visible macOS windows. It prefers Accessibility (AX) targets such as @e1, returns semantic state after every action, and attaches screenshots to /tmp/pi-computer-use/ only when AX coverage is too weak for reliable operation.

Table of Contents

• Quick Start
• How It Works
• Command Reference
• Documentation
• Development & Benchmarks
• Release & Install Notes
• License
• See Also

Quick Start

Install the Pi package:

pi install https://github.com/monotykamary/pi-computer-use

Start Pi in interactive mode. On the first session, grant macOS permissions to:

~/.pi/agent/helpers/pi-computer-use/bridge

Required permissions: Accessibility + Screen Recording.

Some browser automation paths use JavaScript from Apple Events. If the browser blocks that, Pi surfaces a model-readable hint asking the user to enable Allow JavaScript from Apple Events in the browser's developer menu, then retry.

Then use the CLI in any Pi bash session:

pi-computer-use list_apps
pi-computer-use list_windows --app Safari
pi-computer-use screenshot --window @w1
pi-computer-use click --ref @e1
pi-computer-use set_text --ref @e2 --text "hello"

If screenshot returns a file path like /tmp/pi-computer-use/<stateId>.png, read it with Pi's read tool to view the image inline.

Use /computer-use in Pi to inspect the effective config.

How It Works

pi-computer-use has four pieces:

1. The CLI (harness/cli.ts) — pi-computer-use screenshot, pi-computer-use click @e1, etc. Auto-spawns the harness server on first use.
2. The harness server (harness/server.ts) — a long-lived HTTP server that holds the native Swift helper process and all runtime state (current window, AX targets, capture metadata). Every CLI call dispatches to the same server, so state survives across calls.
3. The TypeScript bridge (src/*.ts) — modular bridge split across nine files: types, constants, runtime state, helper IPC, discovery, targeting, capture, actions, and the public perform* API. Imported by the harness server.
4. The native Swift helper (native/macos/bridge.swift) — talks to macOS Accessibility, ScreenCaptureKit, AppKit, and CoreGraphics.
5. The Pi extension (extensions/computer-use.ts) — thin lifecycle shell: installs the CLI alias, starts/stops the harness server, provides /computer-use for config inspection. Registers no tools — all interactions go through the CLI.

Command Reference

Discovery

pi-computer-use list_apps
pi-computer-use list_windows [--app Safari] [--bundleId com.apple.Safari] [--pid 123]

Screenshot

pi-computer-use screenshot [--app Safari] [--windowTitle "Google"] [--window @w1] [--image auto|always|never]

Actions

pi-computer-use click [--ref @e1] [-x 320] [-y 180] [--button left|right|middle] [--window @w1] [--stateId ...] [--image auto|always|never]
pi-computer-use double_click [--ref @e1] [-x 320] [-y 180] [--window @w1] [--image auto|always|never]
pi-computer-use move_mouse -x 100 -y 200 [--window @w1] [--image auto|always|never]
pi-computer-use drag --path '[{"x":10,"y":20},{"x":100,"y":200}]' [--ref @e1] [--window @w1] [--image auto|always|never]
pi-computer-use scroll [-x 400] [-y 300] [--ref @e3] [--scrollY 600] [--window @w1] [--image auto|always|never]
pi-computer-use keypress --keys '["Enter"]' [--window @w1] [--image auto|always|never]
pi-computer-use type_text --text "hello" [--window @w1] [--image auto|always|never]
pi-computer-use set_text --text "hello" [--ref @e2] [--window @w1] [--image auto|always|never]
pi-computer-use wait [--ms 1000] [--window @w1] [--image auto|always|never]

Window management

pi-computer-use arrange_window [--window @w1] [--preset center_large] [-x 0] [-y 0] [--width 1200] [--height 800] [--image auto|always|never]
pi-computer-use navigate_browser --url "https://example.com" [--window @w1] [--image auto|always|never]

Batched actions

pi-computer-use computer_actions --actions '[{"type":"click","ref":"@e1"},{"type":"type_text","text":"hello"},{"type":"keypress","keys":["Enter"]}]' [--window @w1] [--stateId ...] [--image auto|always|never]

JSON passthrough

pi-computer-use '{ "action": "click", "ref": "@e1" }'
pi-computer-use '{ "action": "screenshot", "window": "@w1" }'

Server management

Command	Behavior
pi-computer-use --status	Print health JSON or exit 1 if down
pi-computer-use --start	Start the harness server
pi-computer-use --stop	Graceful shutdown
pi-computer-use --restart	Stop + start fresh
pi-computer-use --logs	tail -f the server log

Documentation

• Configuration: config files, environment overrides, browser control, and stealth mode.
• Development: local setup, helper builds, validation, release signing notes, and PR workflow.
• Troubleshooting: permissions, helper setup, stale refs, browser refusal, and strict mode errors.
• Benchmarks: benchmark commands, metrics, regression policy, and local comparison workflow.
• Contributing: issue-first contribution rules and PR checklist.

Development & Benchmarks

Install dependencies:

npm install

Run type checks:

npm run typecheck

Run the local checkout in Pi without loading another installed copy:

pi --no-extensions -e .

Run the default QA benchmark:

npm run benchmark:qa

Run the wider benchmark that may open apps:

npm run benchmark:qa:full

Release & Install Notes

The package is published on npm as @monotykamary/pi-computer-use.

npm install @monotykamary/pi-computer-use
npm install @monotykamary/pi-computer-use@0.3.0

Pi installs should pin a GitHub release tag:

pi install https://github.com/monotykamary/pi-computer-use@v0.3.0
pi install -l https://github.com/monotykamary/pi-computer-use@v0.3.0
pi install /absolute/path/to/pi-computer-use

Remove:

pi remove https://github.com/monotykamary/pi-computer-use@v0.3.0
npm remove @monotykamary/pi-computer-use

Screenshots

License

MIT

See Also

• Pi
• @earendil-works/pi-coding-agent