How to write the brief for your social media agency pitch

A social media brief is the document setting out your context, objectives and constraints so several agencies can answer on a comparable basis. Without one, you receive proposals that cannot be compared, and you end up deciding on price for lack of anything better. This guide covers the eight sections to include, the information you should not hold back, and the mistakes that derail a pitch process from the outset.

What a brief is actually for

A social media brief is the formalised document sent to shortlisted agencies, setting the scope of the engagement and the shape of the response expected. Its main purpose is not to dictate a solution, it is to make proposals comparable.

The costliest instinct is staying vague so agencies can be creative. The outcome is mechanical: each one invents a different scope, and you end up with three quotes covering different services. Comparison becomes impossible, and the cheapest wins by default, often because it offers the least.

A good brief does the opposite. It locks down what has to be common, the objectives, the constraints and the response format, and leaves open what should be open, the strategy and the creative point of view.

The eight sections of a social media brief

An effective brief runs to five or ten pages. Beyond that, it becomes a document nobody reads in full, agencies included.

The three things you should not hold back

Three pieces of information are routinely left out, usually out of caution, and they cost a great deal in response quality.

The budget. Withholding it to see what agencies propose is counterproductive. With no range, each one sizes at random and you receive setups that cannot be compared. A wide range is enough for everyone to scope a serious answer. Market price gaps come down to identifiable variables anyway, which we break down in our article on social media agency pricing.

What has not worked. Past failures are the single most useful thing in a brief. An agency that knows a format was tested without success will not put it back on the table. Hiding it guarantees the same mistakes get repeated.

The sign off chain. If content has to clear legal and the leadership team before publication, say so. That constraint completely changes what a realistic production cadence looks like, and an agency discovering it after signing will not hold its commitments.

How to write objectives an agency can act on

A workable objective is one an agency can translate into a setup. Increase our visibility is not one. Generate qualified demo requests from marketing teams in France is.

The simplest method is to rank three levels. The business objective, what the company is trying to achieve. The marketing objective, what social should contribute to it. The indicators, what will be measured to verify it.

That hierarchy avoids the classic trap of a brief asking for both broad awareness and immediate conversion, two logics that are not driven by the same content or the same formats.

Take the time to describe what success looks like at six and twelve months. That is what will let you choose between two ambitious proposals that are ambitious in different ways.

The evaluation criteria to state upfront

Stating your selection criteria in the brief mechanically improves response quality, because agencies know where to invest their preparation time.

• Grasp of the context. An agency that correctly reframes your problem is worth more than one that runs through its client list.
• Strategic relevance. The reasoning proposed matters more than the number of content pieces promised.
• Real production capacity. Ask who produces, with what resources, and at what sustainable pace.
• The dedicated team. Insist on knowing who will actually work on the account, not only who turns up to the pitch.
• The measurement framework. An agency that proposes its dashboard in the response is committing to outcomes.

If your process includes an influence component, add a criterion on how creators are selected. That is where the difference sits between a credible activation and a product placement, a subject we cover in our guide to running an influencer marketing campaign.

The pitch timeline

A social media pitch process runs comfortably over six to eight weeks. Shorter, and agencies rush it or drop out. Longer, and momentum fades while teams change.

A rhythm that works: brief sent out, ten days for written questions, answers circulated to all candidates at once, three weeks of preparation, then the presentations. Circulating answers to everyone is a detail that matters: it stops the most curious agency being the only one holding a key piece of information.

Keep the number of agencies to three or four. Beyond that, the analysis load on your side becomes such that the decision gets made on an impression rather than on substance.

The mistakes that sink a pitch

• Asking for a full strategic recommendation for free. The strongest agencies decline, and you lose the candidates you wanted.
• Copying a brief found online. It produces generic answers, because it contains nothing specific to your situation.
• Blending fees and media spend in the figure you state. You will be comparing proposals with different amounts of actual service in them.
• Forgetting account ownership. Your accounts, audiences and advertising data must stay in your name, and that belongs in the brief, not in the contract.

What Sleeq looks for in a brief

At Sleeq, a creative social and influence agency based in Paris, the processes that lead to solid setups share one trait: the brief says what has already been tried and what failed. That is what lets us propose something else rather than a variation on what you are already doing.

The second marker is clarity on the internal decision chain. Knowing who signs off, at what pace and against what criteria changes what we recommend, sometimes more than the budget does.

Social media brief FAQ

Should you state your budget in the brief?

Yes, at least as a range. With no indication, each agency sizes at random and you receive proposals that cannot be compared, which forces you to decide on price rather than relevance. Giving a range does not commit you and does not push agencies to fill it artificially: it lets them propose a realistic setup and tell you whether your ambition is fundable.

How many agencies should you invite?

Three or four is a good balance. Fewer, and you lack points of comparison. More, and the analysis load on your side becomes such that the decision ends up being made on the impression left by a presentation rather than on the substance of the proposals. A first screening on credentials lets you shorten a long list before sending the full brief.

How long should a social media brief be?

Five to ten pages covers the vast majority of cases. What matters is not volume but precision on three points: ranked objectives, exact scope and internal constraints. A longer document dilutes the useful information and never gets read in full, including by the agencies responding.

Can you ask for creative work in the pitch?

Yes, provided you limit the scope. Asking for a point of view and two or three illustrated directions is reasonable. Asking for a full editorial plan, guidelines and finished content for free is not: the strongest agencies decline that kind of process, which mechanically weakens your candidate pool.

How long does a social media pitch take?

Six to eight weeks between sending the brief and deciding. That allows ten days of written questions, roughly three weeks of preparation and a week of presentations. Shorter, and responses are superficial. Longer, and the teams presented change between the response and the kick off, which empties the selection of meaning.

What if no response is convincing?

That is usually a sign the brief was ambiguous rather than the market being weak. Look at the three points most often misread across the responses you received: those are exactly what your brief failed to frame. A tightened second round with two agencies and a clarified brief generally produces something workable.

In short

A social media brief is not there to dictate the solution but to make responses comparable. Eight sections, five to ten pages, a stated budget, past failures owned up to and evaluation criteria announced upfront: that is what separates a process that lands from one that ends in a default choice.

If you are preparing a pitch, let's talk through your framing or take a look at our social media offering.