If we use a vendor's model, isn't the vendor liable?

Rarely in full. Vendor terms typically disclaim liability, and even where a developer shares responsibility, the *deployer* — the organization that chose to let the agent act on real customers and data — is usually the first party a regulator or plaintiff reaches. You can shift some risk by contract, but you can't contract your way out of your own oversight duties under frameworks like the EU AI Act.

How does an audit trail reduce liability?

Negligence and regulatory exposure turn on whether you acted *reasonably*. A tamper-evident audit trail with human oversight at high-risk actions is the concrete evidence that you did — and the required logging is itself a legal obligation for high-risk systems. Its absence, conversely, is often the clearest sign that you didn't.

Agent Liability

Written by Max Zeshut

Founder at Agentmelt

The question of who bears *legal* responsibility when an AI agent's action harms a third party — a wrong decision, a data leak, a discriminatory outcome, a financial loss. The short answer is that 'the AI did it' is not a defense: an autonomous system is not a legal person, holds no assets, and can't be sued or fined, so liability flows to the humans and organizations in the chain. Three roles can be on the hook: the *provider/developer* who built and placed the agent or its model on the market (a product-liability posture), the *deployer/operator* who put it to use in their own operations (distinct obligations under the EU AI Act plus ordinary negligence exposure), and the *user* who directed a specific action. Two things matter most for anyone shipping agents: the deployer usually can't outsource the risk to the model vendor, and a tamper-evident audit trail is the primary evidence that you acted reasonably. Accountability infrastructure is liability insurance built in advance. *(General orientation, not legal advice — liability turns on jurisdiction, sector, and facts.)*

Пример

A retailer deploys a third-party pricing agent that autonomously sets discriminatory prices. Even though a vendor built the model, the retailer — as deployer — is the one regulators and plaintiffs reach first: it chose to let the agent act on real customers, and under the EU AI Act it owed duties of human oversight and monitoring it can't delegate away.

Часто задаваемые вопросы

If we use a vendor's model, isn't the vendor liable?: Rarely in full. Vendor terms typically disclaim liability, and even where a developer shares responsibility, the *deployer* — the organization that chose to let the agent act on real customers and data — is usually the first party a regulator or plaintiff reaches. You can shift some risk by contract, but you can't contract your way out of your own oversight duties under frameworks like the EU AI Act.
How does an audit trail reduce liability?: Negligence and regulatory exposure turn on whether you acted *reasonably*. A tamper-evident audit trail with human oversight at high-risk actions is the concrete evidence that you did — and the required logging is itself a legal obligation for high-risk systems. Its absence, conversely, is often the clearest sign that you didn't.

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