Book 3 · Ch 9: Claude as Your Browser Agent

Book 3 · Chapter 9: Claude as Your Browser Agent

This page sorts a browser-agent task into the right level of oversight, with delegation prompts and a browser-safety card.

This page assumes you've read the chapter. It hands you the tools, not the lessons.

Risk-Tier Sorter

Before you hand a task to the browser agent, sort it. Answer five questions and the tool places it on the oversight ladder, with the chapter's reasoning and the safety lines that apply.

About the task

Involves money or purchasesBuying something, a checkout, or anything touching a financial account.

Touches logged-in accounts or personal dataYour email, CRM, a portal, or anything behind a login.

Visits sites you don't already trustThe open web, forums, or pages you haven't vetted yourself.

Is reversible if it goes wrongA mistake is easy to undo, not a sent message or a placed order.

Is long or repetitive across many pagesMany steps, multiple sites, or batches of the same entry.

This task belongs in

Let it run with checkpoints

Ask before acting

Review as it goes

Let it run with checkpoints

Trusted sites, reversible, and repetitive across many pages: this is the multi-step, tedious work the agent is for. Let it run, then check the result.

Is it even worth delegating?Rule of thumb: if a task would take you less than five minutes of standard clicking, do it yourself. If it's ten-plus minutes of tedious multi-site work, delegate it.

These are strong safeguards, not a force field. You make the final call.

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Browser-Safety Card

1Use "ask before acting" for anything sensitive. Claude pauses before each consequential step, so you review and approve before it acts.
2Start with sites you trust. Trusted sites first. Expand only once you have seen how the agent behaves.
3Stop if it veers. If Claude suddenly veers off, starts visiting sites you didn't mention or asking for sensitive information, stop the task. That's what a prompt-injection attempt looks like.
4Under five minutes? Do it yourself. If a task would take you less than five minutes of standard clicking, do it yourself. If it's ten-plus minutes of tedious multi-site work, delegate it.
5Use a separate browser profile. Run Claude in Chrome in a separate browser profile, one that isn't logged into your sensitive accounts.

From the Safety, Limitations, and Good Judgment section.

Delegation prompt starters

Price comparison across several sites

I need to compare three project management tools for a client with a 20-person team. Go to asana.com, monday.com, and clickup.com. For each one, find their pricing page and extract: the name and price of the plan that fits a 20-person team, the key features included at that tier, any limits on storage or integrations, and whether they offer a free trial. Put everything in a comparison table with one column per tool.

Form filling (batch data entry)

Here are eight new contacts from a spreadsheet. For each one, go to our CRM, click 'Add Contact,' fill in the name, email, company, phone, and the note 'Met at TechConf spring.' Do all eight.

Browsing research (multi-site, compiled)

I'm comparing three turnover cleaning vendors for my rental. Here are their websites: [url1], [url2], [url3]. For each one, I need: (1) A two-sentence summary of who they are and the areas they serve. (2) Their pricing, if listed, per turnover or hourly, and note 'pricing not public' if it isn't. (3) What's included in a standard turnover (linens, restocking, inspection, that kind of thing). (4) Check Google and Yelp for ratings and any recurring complaints. Compile everything into a one-page brief for each vendor with a recommendation at the end.

Next: the judgment to know when to build, when to delegate, and when to leave it alone.