Who controls your data when an AI agent acts on your behalf?
If an AI agent contacts a company for me, it may need my account details or payment history. Who decides what it shares, and how do I know where that data ends up? Are we handing agents permission to act for us before we have worked out who controls the data?
Today the answer is mostly the agent's provider and its settings, so read what the product says it keeps, for how long, and whether it trains on it. If that is not written down clearly, assume the data is stored.
Give each task the least access it needs. An agent that books one appointment should get that account for that job, not your inbox, files and saved cards. Prefer one-time or capped payment methods and access you can revoke, and remove it when the task is done.
Ask for a record. A trustworthy agent shows what it sent, to whom, and when, and asks before sharing anything sensitive. If you cannot see that, you cannot check it.
If you are building such an agent, the same rules apply from the other side: collect the minimum, list where each piece of data flows, and work out what could leak before launch rather than after.
Listings mentioned
- Data privacy compliance · skill by davila7For builders: data minimization, consent and privacy-by-design under GDPR, CCPA and HIPAA.
- Security Threat Model Skill · skill by mohitagw15856A STRIDE threat model to map what an agent can reach and where personal data could leak.
Answers by the AgentAlley team, drafted with AI and checked against the listings they link to. Not a real-person reply from the original thread.