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Automated Ghost Computer Use

This guide shows how to turn on computer-use in Claude Code, grant the right desktop permissions, and start using it for browser-driven QA and automation tasks.

FocusClaude computer-useUse caseGhost browser automationGoalClicks, forms, and QA workflows

Table of Contents

1Claude Dangerously Skip Permissions
2Computer-Use Setup
3First Computer-Use Tasks

Start Here

Claude Dangerously Skip Permissions

Start Claude in Dangerously Skip Permissions

Start the workshop in the project folder you intend to use. This keeps the live build moving without stopping for every small permission prompt.

Claude Code prompt

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Heads Up

Dangerously Skip Permissions is powerful. Use it only in the project folder you mean to edit.

Setup

Computer-Use Setup

Open the MCP server menu

Start a Claude Code session in your terminal. Then type the following and press Enter:

Claude Code

/mcp

A menu appears showing all available MCP servers. Scroll down until you find computer-use. Select it and choose Enable.

Pro Tip

MCP stands for Model Context Protocol. It is the system that gives Claude access to tools beyond the built-in ones. Computer-use is a built-in MCP server that ships with Claude Code but is off by default.

Grant macOS permissions

The first time you use computer-use, macOS will ask you to grant two permissions:

Accessibility

Lets Claude click buttons, type into fields, and scroll through pages. Go to System Settings, Privacy and Security, Accessibility, and toggle on Terminal or your terminal app.

Screen Recording

Lets Claude see what is on your screen so it can navigate. Same path: System Settings, Privacy and Security, Screen and System Audio Recording. Toggle on your terminal app.

After granting both permissions, you may need to restart Claude Code once. Then you are ready.

Heads Up

These permissions are session-scoped. Claude will ask which apps it is allowed to control each session before touching them. You can press Escape at any time to stop it immediately.

Practice

First Computer-Use Tasks

Test it with a simple task

With computer-use enabled, start a new Claude Code session and give it a simple instruction. This prompt asks Claude to open your browser and take a screenshot of a website:

Claude Code prompt

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Claude will open the browser, navigate to the URL, capture what is on screen, and describe it back to you. This is the foundation. Everything else builds on this.

Try a form-filling task

Computer-use shines when an app has no API. Try having Claude fill in a form for you. This prompt works for any tool you use that has a web interface:

Claude Code prompt

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Pro Tip

Computer-use works best when you are specific. Tell Claude exactly where to go and exactly what to fill in. The more detail you give, the less it has to guess.

Test your own website

One of the most useful things computer-use can do is QA-test your site the way a real visitor would. Use this prompt to have Claude click through your sign-up flow and report any issues:

Claude Code prompt

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