How to Write a Campaign Brief With Claude (Template)
A campaign usually starts as a one-line Slack message: "let's do a referral push before end of quarter." That is a real goal. It is not a brief. Whoever picks it up has to guess the audience, the channels, the deadline, and what "done" looks like, and every guess is a place the campaign can drift from what you meant.
A brief isn't paperwork. It's the difference between one round of revisions and five.
Warning
A goal without structure is an invitation for someone else to fill in the blanks. The blanks they fill wrong are the ones you spend next week fixing.
Why a one-line goal becomes five rounds of revisions
A creative team handed a goal instead of a brief does not stop working. They pick an audience, assume a channel mix, estimate a deadline, and build on those assumptions. When one of the assumptions is wrong, and with nothing to check against at least one usually is, the first draft misses in a way that has nothing to do with the creative. Every fix from there is a full round-trip.
| Goal only | Structured brief | |
|---|---|---|
| First draft is aimed at | The team's best guess | The target you actually set |
| First round of feedback is about | Correcting assumptions | Improving the work |
| Wrong assumptions surface | After the draft is built | Before anyone starts |
| Rounds to something shippable | Four or five | One or two |
Decisions and inferences
Here is the idea the rest of this guide runs on. Every line in a brief is one of two things:
- A decision: you made it. The launch date is June 1. The channel is email.
- An inference: someone guessed it, maybe well. "Audience: existing power users" when you never actually said that.
Claude is good at producing a complete brief fast, which means it will fill every gap with an inference. That is fine, as long as the inferences are labelled. The brief is not done until every inference has become a decision, either because you confirmed it or because you changed it.
Tip
The one instruction that makes Claude's briefs safe to hand off: "mark every line as something I told you or something you inferred." Then you review a short list of guesses instead of re-reading the whole document.
The process
- 1
State the goal and everything you already know
The real goal, plus any fixed constraints: a deadline, a budget, a required channel. Do not invent the rest. The next steps handle it.
- 2
Ask for a brief in five named fields
Audience, key message, channels, deliverables, deadline. Named sections, not prose. A creative team scans a brief, it does not read one.
- 3
Have Claude label every line: told or inferred
This turns the review into a checklist of guesses rather than a full reread.
- 4
Turn every inference into a decision
Confirm it, correct it, or mark it as an open question for the kickoff. When nothing is left labelled "inferred," the brief is ready.
A finished brief, filled in
The referral-push goal from the top, turned into a brief. Two lines are still marked inferred, which is exactly the point: they are the two things to confirm before this ships.
Audience (inferred): existing customers who have been active in the last 30 days and are on a paid plan. Confirm: do we include free-plan users?
Key message: you already rely on this. Your team will too, and you both get a free month when they join.
Channels: in-app prompt after a successful action, one email to the segment, a one-line mention in the monthly newsletter.
Deliverables (inferred): in-app banner copy, one email, newsletter blurb, a referral landing section. Confirm: do we need a new landing page or a section on the existing pricing page?
Deadline: live June 1. Assets to review by May 25.
A brief like this is faster to fix now, while it is five lines, than after a first draft is built on the wrong audience.
Prompt templates
Campaign goal: [one sentence]. What I already know for certain: [deadline, budget, required channels, anything fixed]. Turn this into a one-page brief with five fields: audience, key message, channels, deliverables, deadline. Mark every line as "(told)" if it came from what I said or "(inferred)" if you filled it in. For each inferred line, add one short question I need to answer.
Here is a campaign brief: [paste].
Check it against these five fields: audience, key message, channels,
deliverables, deadline.
Tell me: which field is weakest and what is missing from it, which line a
creative team is most likely to interpret two different ways, and the one
assumption that would waste the most time if it turned out wrong.The five fields, and what makes each one strong
Audience: specific enough to picture one person. "Freelance designers on the free plan who hit the project limit," not "our customers."
Key message: the one sentence the campaign has to land. Not a feature list, not three messages.
Channels: which ones, in what order, with any format limit per channel.
Deliverables: the actual assets, named. "Email, in-app banner, landing section," not "creative."
Deadline: the live date and the review date before it.
Common mistakes
- A brief so thin it invites the same guessing. If the audience line is "our users," you have moved the problem, not solved it.
- A brief so long nobody reads it. Past one page, the creative team skims, and skimming is guessing with extra steps.
- Shipping the inferred lines unread. A good guess presented as a decision is still a guess. The whole value is in reviewing that short list.
- Writing the brief after the work starts. By then the assumptions are already baked into a draft, and you are correcting instead of directing.
Inside Claude Tutorial
Turning a rough ask into named sections is a transferable habit.
It is not only a marketing skill. The app teaches the same structuring move across other kinds of documents, with practice that carries over any time you are handed a goal instead of a plan.
Frequently asked questions
What should a campaign brief include?
At minimum: audience, key message, channels, deliverables, and a deadline. One page. Anything a creative team would otherwise have to guess belongs in it; anything they do not need to start belongs in the kickoff, not the brief.
Can Claude write a creative brief?
It can draft a complete one from a one-line goal in seconds. What it cannot do is know which parts you actually decided, so instruct it to label every line as told or inferred, then confirm the inferred ones.
What is the difference between a campaign brief and a creative brief?
They overlap. A campaign brief covers the whole effort: audience, message, channels, timeline. A creative brief is often narrower, focused on one deliverable's concept and requirements. The five fields here work for both.
How long should a marketing brief be?
One page. If it runs longer, it is carrying detail that belongs in the kickoff meeting or the asset specs. A brief the team can hold in their head is a brief they will actually follow.
Who should write the campaign brief?
Whoever owns the goal, with Claude drafting the structure. The point of the told-versus-inferred labelling is that the goal owner only has to review the guesses, not compose the whole document.
Continue reading
- Claude for Marketing: where the brief sits in the full campaign workflow.
- Writing Better Marketing Copy With Claude: turning the brief's key message into a first draft.
- Turn Customer Interviews Into Pain Points: where a real key message comes from, in the audience's own words.
- Build a Brand Voice Claude Actually Follows: the reference the drafts made from this brief get checked against.
- How to Write an SEO Content Brief With Claude: the same brief-first habit, for one piece of content instead of a campaign.