Agencies are blamed for a lot of mediocre marketing that was actually lost at the briefing stage. A vague brief produces confident guesswork, and guesswork billed monthly is expensive. The Growth Bully, a Malta performance marketing agency, sits on the receiving end of briefs every week, and the difference between the engagements that fly and the ones that grind is visible before any campaign launches. This is what a brief that performs contains, and how to judge the response you get to it.
Why do most agency briefs produce mediocre work?
Because they describe deliverables instead of outcomes. "We need social media management and some ads" tells an agency what to sell you, not what you need to achieve. The agency prices the deliverables, delivers the deliverables, and six months later nobody can say whether any of it worked, because working was never defined.
The second failure is withheld information. Businesses routinely hide their real numbers from the people they are paying to grow those numbers: margins, close rates, what a customer is worth. An agency briefed without unit economics is navigating blind, and every targeting, budget and channel decision it makes is a guess about what you can afford. Confidentiality is what contracts are for. Secrecy just buys worse work.
What information does an agency actually need?
Six things, none of which require a long document. A performing brief fits on two pages and answers what success is, what the economics allow, who the buyer is and what has already been tried. Everything else is detail the agency should extract in the first working sessions.
- The commercial goal. Revenue, leads or bookings, with a number and a timeframe. Not "more visibility".
- The unit economics. Average order or deal value, gross margin, close rate from enquiry to sale, and what a customer is worth over time. These four numbers set every budget and target that follows.
- The audience truths. Who actually buys, why they choose you, why they choose competitors, and what they say in their own words. Real quotes beat personas.
- The history. Past campaigns with their actual results, account access where it exists, and an honest note on what failed. Failures are data an agency would otherwise pay to rediscover.
- The constraints. Regulatory rules, brand boundaries, capacity limits, seasonal windows, sign-off requirements. Constraints discovered mid-campaign cost weeks.
- The definition of a result. What counts as a qualified lead or a valid sale, agreed before launch, so the first monthly report is not an argument about definitions.
What should you ask the agency before you start?
Ask questions that reveal how they operate when the work gets hard. How they report against revenue, how often creative gets tested and killed, who works your account day to day, what they need from you to succeed, and how quickly they will tell you something is not working.
The last one matters most. Every campaign has underperforming weeks; the difference between agencies is whether you hear about them proactively with a plan, or discover them buried in a quarterly slide. You are not buying a promise that nothing will fail. You are buying honesty and speed when something does. How we structure that rhythm is on our how it works page, and the accountability argument runs deeper in why retainers beat projects for growth marketing.
What are the red flags in an agency response?
Certainty without questions. An agency that returns a proposal without interrogating your goals, numbers and history is selling a package, not solving your problem. Guaranteed results, reports built on reach and impressions, and reluctance to explain who actually does the work belong on the same list.
The inverse is also true, and worth saying plainly: the best early signal of a strong engagement is an agency that asks uncomfortable questions. If they push on your margins, challenge your definition of a lead and ask what failed before, they are building the same brief this article describes, from the other side of the table. That friction at the start is what performance later feels like.
What should the first 90 days look like?
Month one is baseline and build: tracking verified, definitions agreed, first campaigns live. Months two and three are where the compounding starts, as test results reshape targeting, creative and budget. Judge the trajectory and the honesty of the reporting, not the absolute numbers of week two.
Agree the review points in the brief itself: what will be measured, when, and what happens if it is off track. A serious agency will welcome that structure, because it is the same structure they hold themselves to internally. Our own version of it is documented across our case studies, where the briefs behind the numbers all started the way this article describes. If you have a brief taking shape, book a strategy call and pressure-test it on us. The questions we ask back will tell you exactly what you are dealing with.