AI agent
Google's guide to generative AI features in Search describes agents as autonomous systems that perform tasks for people, and notes that browser agents may read a page through screenshots, the page code or the accessibility tree. For a manufacturer, the practical case is a buyer asking an assistant to shortlist three makers of a 50 mm ball valve, check their approvals and request quotes.
An agent can only do that with a site whose facts sit in plain text, whose forms have clear labels and whose buttons work without tricks. The same things help a human buyer on a slow phone. Specifications locked in a PDF or an image, or a quote form that needs five clicks to find, stop an agent as surely as they stop a busy purchase manager. See llms.txt for one file aimed at agents, and LLM visibility for the wider picture.