Assistant or agent: who carries the work between steps
An assistant answers the person in front of it. Each step waits for a prompt, and the person carries the context from one step to the next: copying the brief, downloading files, chasing approvers. An agent is given a goal, a set of tools and permissions, and a definition of done. It plans the steps, runs them, notices when a check fails and tries again, and stops at the gates where a person must decide. For buyers, the useful question is not how capable the agent sounds but what it is permitted to do unsupervised, and what it does when it is unsure. A good agent stops and asks rather than guessing.
The jobs agents handle well today
Agents are strongest on work that is multi-step, rule-bound and checkable. In content that means turning a brief and a media plan into an asset list with sizes, lengths and languages; drafting market briefs from a master; generating variants within the approved claims; checking each output against what a machine can test, such as character limits, safe zones, file weights, banned words, legal lines and contrast; routing items to reviewers by risk; and resizing, exporting, filing approved work in the DAM and reporting what is finished and what is stuck. They are weak at judging whether an idea is good, reading cultural context and settling conflicting feedback from two senior approvers.
Guardrails: claims, spend and publishing rights
Give agents permissions in tiers and keep the risky ones with people. Generating drafts is low risk. Approving is never the agent's job for its own work. Publishing should need a person or a rule a person approved in advance, such as posting an already approved item at a scheduled time. Spending money, by launching or boosting ads, needs hard budget caps set by people and a confirmation step. Claims come only from the approved library; anything new goes to legal. Before exporting, the agent should check rights metadata, including usage expiry, territories and the scope of any talent consent. Agents that read outside material, such as emails, web pages or supplier files, can be steered by instructions hidden in it, so keep them away from publishing and spending permissions.
People in the loop, and a record of every step
Design the gates before the agent runs. Decide where a person must approve, such as claims, first-of-a-kind creative and anything that publishes or spends; where sampling is enough, such as the fortieth resize of an approved master; and where the agent must stop and escalate, such as a failed check it cannot fix or a brief that contradicts itself. Then make the run auditable: every step, input, tool call, model, rule check and approval, with timestamps, in a log someone can replay. Synthetic White's agents take a brief through to an approved campaign, and the approvals along the way follow defined roles with a record of who approved what.
Updated 25 September 2026