Guide

30 prompts for your AI browser agent.

An agent is only as good as the instruction. Start with these, then adapt them.

Updated November 11, 20264 min readBy the Hark team

In short

Good agent prompts name the outcome, include the specifics (dates, names, quantities), state fallbacks, and say where to stop. “Book a table for 2 tonight at 8 pm; if not available try 8:30; don’t confirm without asking.”

Email (Chat mode)

  • Summarize this email.
  • What do I need to do, and by when?
  • Draft a reply: yes to Friday, budget by Thursday.
  • Write a polite decline and suggest next week.
  • Make the draft shorter and more formal.
  • Who is waiting for an answer from me in this thread?
  • Translate this email and summarize it in English.
  • Is there anything in this newsletter I need to act on?

Pages (Chat mode)

  • Summarize this page.
  • Pull out the key numbers and dates.
  • Explain this in simple terms with an example.
  • What are the cancellation terms, in plain English?
  • What is missing or one-sided in this article?
  • Turn this page into a five-item checklist.

Tasks (Agent mode)

  • Find a table for 2 tonight at 8 pm on this site.
  • Fill in this form with my details: [name, email, phone]. Don’t submit.
  • Compare prices on this page and open the cheapest.
  • Unsubscribe me from this newsletter.
  • Change my notification settings on this site to email only.
  • Add the cheapest wireless option to the cart and stop.
  • Find the contact form on this site and open it.
  • Set the filters to under $100, 4 stars and up, free delivery.

Tracking (Tracker)

  • Add what matters on this page to Tracker.
  • Scan this email for tasks and dates.
  • When does this order arrive?
  • What do I need to pay, and by when?
  • Add this booking to Tracker with the confirmation number in the note.

How to write your own

  1. Outcome first. “Book”, “fill”, “compare” — not “can you help me with”.
  2. Specifics. Dates, times, names, quantities, budget.
  3. Fallbacks. “If 8 pm is full, try 8:30.”
  4. Stop point. “Don’t submit”, “stop at the cart”.
  5. One task per message.

Speak instead of typing with voice input.

FAQ

Questions, answered

What makes a good prompt for an AI agent?

A clear outcome, the concrete details, a fallback and a stop point.

Can I chain several tasks in one prompt?

It works better to give one task at a time and check the result.

Do these prompts work in other agents?

Most of them do; the mode names and the approval behaviour differ between products.

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