ghost-os

User:    "Watch me send an email."
Agent:   ghost_learn_start task_description:"send email in Gmail"
         ...user performs the task...
Agent:   ghost_learn_stop
         -> 8 actions with full AX context
         -> Synthesizes recipe with 3 parameters: recipient, subject, body
         -> ghost_recipe_save
User:    "Send an email to bob about the Q4 report"
Agent:   ghost_run recipe:"gmail-send-learned" params:{...}

Requires Input Monitoring permission (System Settings > Privacy & Security > Input Monitoring). Run ghost setup to configure.

4 new tools. ghost_annotate, ghost_hover, ghost_long_press, ghost_drag. Pinned vision sidecar dependencies, fixed vision model download, Chinese/CJK input support (thanks @junshi5218).

Thank you to the 500+ people who have starred this project. You are why we keep building. If you want to contribute directly, we would love that. See CONTRIBUTING.md.

You:     "Send an email to sarah@company.com about the Q4 report"
Agent:   ghost_run recipe:"gmail-send" params:{recipient, subject, body}
         → Compose opens, fields fill, email sends. Done.

Setup

Recipes in Action

Send emails and download papers. Any app. Any workflow.

Beyond the Browser

Slack messages, Finder folders — Ghost OS operates native macOS apps, not just browsers.

Why Ghost OS?

Other computer-use tools take screenshots and guess what's on screen. Ghost OS reads the macOS accessibility tree — structured, labeled data about every element in every app. When the AX tree isn't enough (web apps, dynamic content), it falls back to a local vision model (ShowUI-2B) for visual grounding.

And when it figures out a workflow, it saves it. Other tools repeat the same expensive reasoning every time.

• Self-learning — A frontier model figures out the workflow once. A small model runs it forever.
• Transparent — Recipes are JSON. Read every step before running. No black box.
• Native — Accessibility tree first. Vision fallback when needed. Structured data over pixel guessing.
• Any app — Not just browsers. Slack, Finder, Messages — anything on your Mac.
• Local — Your data never leaves your machine.
• Open — MCP protocol. Works with Claude Code, Cursor, VS Code, or any MCP client.

| | | Ghost OS | Anthropic Computer Use | OpenAI Operator | OpenClaw | |:---:|------|:--:|:--:|:--:|:--:| | 👀 | How it sees | Accessibility tree + local VLM | Screenshots only | Screenshots only | Browser DOM | | 🖥️ | Native apps | Any macOS app | Any (via pixels) | Browser only | Browser only | | 🧠 | Learns workflows | JSON recipes | No | No | No | | 🔒 | Data stays local | Yes | Depends on setup | No (cloud) | Yes | | 📖 | Open source | MIT | No | No | MIT |

Install

brew install ghostwright/ghost-os/ghost-os
ghost setup

That's it. ghost setup handles permissions, MCP configuration, recipe installation, and vision model setup.

Homebrew has a known issue on macOS developer betas where it demands an Xcode version that doesn't exist yet. If brew install fails, install directly:

curl -sL https://github.com/ghostwright/ghost-os/releases/latest/download/ghost-os-2.2.1-macos-arm64.tar.gz | tar xz
sudo cp ghost /opt/homebrew/bin/
sudo cp ghost-vision /opt/homebrew/bin/
sudo mkdir -p /opt/homebrew/share/ghost-os
sudo cp GHOST-MCP.md /opt/homebrew/share/ghost-os/
sudo cp -r recipes /opt/homebrew/share/ghost-os/
sudo cp -r vision-sidecar /opt/homebrew/share/ghost-os/
ghost setup

How It Works

Ghost OS connects to your AI agent through MCP and gives it 29 tools to see and operate your Mac. It reads the macOS accessibility tree for structured data about every app. For web apps where the AX tree falls short (Gmail, Slack), a local vision model (ShowUI-2B) finds elements visually. Click, type, hover, drag, scroll, press keys, manage windows. Any app, not just browsers.

You:     "Download the latest paper on chain-of-thought prompting from arXiv"
Agent:   ghost_run recipe:"arxiv-download" params:{query:"chain of thought prompting"}
         → Navigates to arXiv, searches, opens PDF, downloads to Desktop. Done.

Works with Claude Code, Cursor, VS Code, or anything that speaks MCP.

Recipes

When your agent figures out a workflow, it saves it as a recipe. A recipe is a JSON file with steps, parameters, and wait conditions. Transparent and auditable.

A frontier model figures out the workflow once. A small model runs it forever.

# One command sends an email
ghost_run recipe:"gmail-send" params:{"recipient":"hello@example.com","subject":"Hello","body":"World"}

# 7 steps, 30 seconds, 100% reliable

• Recipes are just JSON. Read every step before running.
• Share with your team. One person learns the workflow, everyone benefits.
• Chain recipes together. The agent knows when to call what.
• Write once with Claude or GPT-4. Run forever with Haiku.

29 Tools

| | Tool | What it does | |:---:|------|-------------| | 🔍 | ghost_context | Get the current app, window title, URL, focused element, and all interactive elements on screen | | 🔍 | ghost_state | List every running app with its windows, positions, and sizes | | 🔍 | ghost_find | Search for elements by name, role, DOM id, or CSS class across the entire UI | | 🔍 | ghost_read | Extract text content from any app, with depth control for nested content | | 🔍 | ghost_inspect | Get complete metadata for one element: role, position, actions, DOM id, editable state | | 🔍 | ghost_element_at | Identify what element is at a specific screen coordinate | | 📸 | ghost_screenshot | Capture a window screenshot for visual debugging | | 📸 | ghost_annotate | Screenshot with numbered labels on interactive elements and click coordinates | | 👁️ | ghost_ground | Find element coordinates using vision (ShowUI-2B). Works when AX tree can't find web elements | | 👁️ | ghost_parse_screen | Detect all interactive elements via vision | | 🎯 | ghost_click | Click an element by name, DOM id, or screen coordinates | | 🎯 | ghost_hover | Move cursor to an element or position to trigger tooltips and hover effects | | 🎯 | ghost_long_press | Press and hold for context menus, Force Touch previews, and drag initiation | | 🎯 | ghost_drag | Drag from one point to another for file moves, sliders, list reordering, text selection | | ⌨️ | ghost_type | Type text into a spec