How to brief an agency on AEO
Guide · SEO / AEO / GEO · 4 min read · last verified 2026-07-25
Handing AEO to an agency without a real brief is how you end up paying for activity you cannot evaluate. The agency writes pages, files reports full of vanity metrics, and six months in you still cannot say whether your brand shows up more in AI answers than it did before. A good brief fixes that at the start. It tells the agency what to move, how you will judge them, and where the honesty lines are — so the engagement is accountable from day one rather than argued about at renewal.
Start with the questions, not the deliverables
The most important thing a brief can specify is not a number of pages or blog posts — it is the set of buyer questions you want to win in AI answers. Give the agency your priority clusters: the high-intent questions buyers ask assistants before they shortlist a vendor in your category. That reframes the whole engagement around outcomes you can measure instead of outputs you merely count. An agency briefed on "publish twelve articles a month" will publish twelve articles a month; an agency briefed on "we want to be present when buyers ask these fifteen questions" has to think about whether the work is actually earning presence.
If you do not yet know your buyer questions, that discovery is the first deliverable, not an assumption. A brief that hands over a guessed question set imports your blind spots straight into the agency's plan.
Define how you will measure them
Name the yardstick in the brief, and make it one you control rather than one the agency reports to itself. The measure that matters is your presence and citation share on the agreed question set, across the assistants your buyers actually use, tracked on a fixed method so the trend is comparable month to month. Say explicitly that you will not accept impressions, "reach," publication counts, or keyword rankings as proof of AEO success, because none of them establish that an assistant is recommending you.
Insist on a locked benchmark taken before work begins. Without a baseline the agency can claim any later reading as progress, and you have no way to separate their contribution from a model update or seasonal drift. The pre-work measurement is what makes every later claim checkable.
Set the honesty guardrails
AEO tempts vendors toward tactics that look productive and age badly, so write the guardrails into the brief. State that you will not accept fabricated statistics, invented customer outcomes, or made-up numbers stuffed into pages to court citations. Require that claims be sourced and that causal statements be framed as hypotheses where the mechanism is genuinely uncertain. Prohibit manipulative link schemes and mass low-quality placements that risk your credibility on the very sources assistants trust.
These are not just ethics clauses; they are quality control. Answer engines increasingly weigh authority and corroboration, so the shortcuts a loosely-briefed agency reaches for tend to underperform the honest work anyway. A brief that bans them protects both your reputation and your results.
Spell out scope, ownership, and cadence
Be explicit about who does what. State whether the agency owns on-site content, off-site corroboration, technical answer-readiness, or all three, and where your internal team hands off. Name the reporting cadence and the review ritual — a monthly read of the locked trend against the question set, not a wall of activity metrics. Decide who owns the published assets and the measurement account when the engagement ends, so you are not renting your own visibility.
Ambiguous scope is where AEO engagements rot. If corroboration sits in nobody's column, it simply does not happen, and you discover the gap only when your perfect pages still fail to earn citations.
Build in the re-scan loop
Structure the engagement as a loop, not a launch. The brief should describe the rhythm you expect: measure the baseline, act on the biggest gaps in the question set, re-scan on a fixed cadence, and reallocate toward what moved. This turns the agency relationship into a series of testable bets rather than one large hopeful push. It also gives both sides a shared, unarguable definition of progress — the trend moved on the agreed questions, or it did not.
How Magrios keeps an agency accountable
Magrios gives the client side of an AEO engagement the instrument the brief depends on: a locked benchmark set before the agency starts, per-question presence and citation tracking across assistants, a cited-sources view that shows whether real corroboration is being earned, and a re-scan that renders each month's work as a comparable delta rather than a report the agency grades itself on. Brief the agency on the questions, hold the ruler yourself, and the relationship becomes accountable by construction — the measurement, not the slide deck, decides whether it is working.