COMPUTER-USE AND BROWSER AGENTS

CHECK YOUR UNDERSTANDING • What is the basic cycle of a computer-use agent? ◦ Answer: Take a screenshot, decide the next action, carry it out with a simulated click or keystroke, then take a new screenshot. • When should you prefer an API over computer use? ◦ Answer: Whenever a good API exists, because it is faster, cheaper, and more reliable. • Why are browser agents especially exposed to prompt injection? ◦ Answer: They are built to read and act on arbitrary page content that anyone may have written. • Name two containment measures for a browser agent. ◦ Answer: Any two of isolation, a site allow-list, blocking dangerous actions, human approval, logging, budgets, and a kill switch. • Why run the agent in an isolated environment? ◦ Answer: Screenshots and actions may expose private data or cause damage, and isolation keeps anything valuable out of reach.