An agent is AI that does work, not just answers: it plans, uses tools, and acts across systems. In Heidi, agents are teammates with context, an earned trust tier, and receipts on everything they do.
The industry word 'agent' covers everything from a chatbot with a plugin to a real autonomous worker. Heidi's definition is stricter: an agent has memory behind it, limits above it, and evidence trailing it.
That last part is the difference between exciting and deployable. Agents you cannot audit are demos. Agents with receipts are employees.