Quick answer: An AI agent is software that uses an AI model to pursue a goal and take actions, such as reading email, filling forms or booking things, with little step-by-step input from you. That makes it more useful than a chatbot, and riskier. Start with narrow, read-only tasks and approve anything involving money or sharing data.
“Agent” is now the favorite word in AI product launches, from browser assistants to coding tools. The idea is simple, but the label gets stretched, so it helps to know what is and is not an agent.
This guide is general information for readers in the US, UK, Canada, Australia and Europe. Features and availability differ by product and region, so check each provider’s own settings and terms.
What is an AI agent?
Proton describes AI agents as software that uses AI to pursue a goal and perform tasks in your online accounts with little oversight. A chatbot handles one prompt at a time. An agent can read information, decide its next step and keep going until it finishes or needs your input.
Most agents combine three parts:
- A language model for reasoning.
- Connections to tools such as email, calendars and databases.
- Memory to track progress.
What can AI agents do today?
Proton lists personal examples like monitoring an inbox and flagging urgent messages, tracking price drops, scheduling meetings and tagging photos. Business examples include sorting support tickets, extracting invoice data and flagging unusual transactions.
Browser agents are a fast-growing type. A reported digest of the week’s news says OpenAI announced ChatGPT in Chrome, which can read open tabs and, with setup, act inside them: filling forms, sending messages, downloading files and grouping tabs. The same DEV Community digest says it asks before interacting with a new website by default, and that availability varies by browser, region and workspace settings. Treat that as a report and check OpenAI’s own pages before relying on it.
How is an agent different from a chatbot?
- Chatbot: answers a question, then waits.
- Agent: breaks a goal into steps, uses tools, and acts on your behalf.
The difference matters because an action can have consequences. A wrong answer can be ignored; a wrong email sent or a form submitted is harder to undo. For more on getting reliable results from chat tools, see our guide on how to write better AI prompts.
What are the risks of AI agents?
Proton names four: a larger attack surface because the agent connects to many apps, over-privileged access, data leakage to third-party AI providers, and prompt injection.
What is prompt injection?
Anthropic defines it as adversarial instructions hidden within the content that AI models process, such as web pages, documents or emails. Auth0 notes attackers can hide instructions visually, for example white text on a white background, and that AI browsers can access logged-in sessions, credentials and browsing history.
Anthropic reports a 1% attack success rate against its own internal adaptive attacker for Claude Opus 4.5 with the updated Claude for Chrome extension, and says that is still “meaningful risk” and that “no browser agent is immune.” That test came from the company itself, so it shows progress, not safety.
How do I use AI agents safely?
- Start small. Begin with low-risk, read-only tasks and expand access gradually (Proton).
- Limit scope. Give each agent one email label or test data only, not your whole account.
- Require approval. Keep a human in the loop for money, security settings and sharing data externally.
- Be wary of untrusted pages. Auth0 advises caution on forums and social media and keeping your browser updated.
- Check the data policy. Find out where data is processed, how long it is kept and whether it trains models. Our guide to using AI safely at work covers workplace rules.
- Never hand over raw passwords. Proton suggests scoped access tokens instead, and review activity logs so you can revoke access quickly.
Should I use an AI agent now?
It depends on the task and the stakes. Tasks like sorting a newsletter label or tracking prices are low risk and easy to check. Tasks that touch payments, passwords, work documents or other people’s data deserve far more care, and your employer or school may have rules about them.
A simple test: if the agent made the worst possible mistake, could you undo it? If not, keep a person in the approval step. Also remember that agent features change quickly, so re-check permissions after each update and remove connections you no longer use.
See more explainers in our more AI coverage section.
Frequently asked questions
Is ChatGPT an AI agent?
A plain chat is not, because it answers and waits. Features that act on your behalf, such as the reported ChatGPT in Chrome work mode, behave like agents.
Are AI agents safe?
Not automatically. Prompt injection and broad permissions are real risks, and even the companies building them say browser agents are not immune.
Do AI agents need my passwords?
They should not. Use scoped permissions or access tokens where offered, and never paste raw passwords or API keys into a prompt.
Can an AI agent spend money for me?
Some can be set up to, but a sound rule is to require your approval for any payment or security change.