Agents. The word brings to mind the science fiction robot. The autonomous being that wakes up, understands, acts, decides in your place. Curtain. The truth is more boring — and for that reason more useful: an agent is a prompt with two things added. Some tools, and a margin of autonomy.
A prompt produces text. An agent produces actions. The tools are the hands: what it can actually touch — send an email, charge a card, delete a file, call a service. Autonomy is the leash: how much you let it act on its own, without coming back to you.
Here’s the leap nobody names. A chat that makes a mistake costs you a paragraph to delete. An agent that makes a mistake does things in the world that don’t come back. Going from prompt to agent, you don’t just gain capability. You gain consequences.
Think of a brilliant intern. Fast, tireless, full of initiative. How much they help you and how much they put you at risk depends on two things. What you put in their hands: a notepad, or the company credit card. And how much you let them run: whether they have to ask you before acting, or whether they can hit send on their own. Give them the card and free rein, and they’ll get through a week’s work in an afternoon without interrupting you once. Or they’ll order a thousand chairs because it seemed sensible to them… also without interrupting you once.
Same intern. What changes are the tools and the level of delegation you’ve granted them.
That’s why autonomy is a dial, not a switch. Wide open where the action is reversible and cheap: a draft, a search, a summary. Hand on the wheel where it’s irreversible or costly: send, pay, publish, delete. The hype sells “fully autonomous” as the goal. The competent person adjusts the dial deliberately, one task at a time.
And there’s a complication: often the agent wasn’t built by you. You downloaded it, or it’s a black box inside software you use. You’re trusting a decision-maker you can’t inspect, and a list of tools you may not even have read.
So before relying on an agent, look at two lists. What it can touch, and how much you let it decide. If either answer is “I don’t know,” you don’t have an agent. You have a bet.