Marketing briefs done badly waste agency hours and produce mediocre campaigns. Done well, they compress weeks of back-and-forth. Claude can do most of the brief work in 15 minutes — but only with the right setup. Here is the exact workflow.
A blank prompt like "write me a campaign brief for X" produces template-shaped content with no specifics. The output looks like a brief but does not actually direct work.
The fix: load Claude with three things — your operational ICP, your brand voice, and 3-5 examples of briefs that produced great work. Then it produces briefs that read like a senior strategist wrote them.
1. Set up the brief Project (one-time, 30 minutes). Claude Project with ICP, voice guide, 3-5 winning briefs as examples, brand positioning doc.
2. Gather inputs. Campaign objective, target audience nuance, budget, timeline, success metrics. Write these as bullets — Claude will structure them.
3. Generate the brief. Prompt: "Draft a campaign brief using our standard structure (in the knowledge base). Objective: [X]. Audience: [Y]. Budget: [Z]. Timeline: [W]. Match the voice and depth of the example briefs. Flag any missing info with [TK: ...]."
4. Edit for sharpness. Most AI briefs are 80% there. The remaining 20% is voice tightening and adding the specific creative direction or business context only you know.
5. Use it to direct work. Share with creative team, agency, or freelancers. A good brief saves 5-10 hours of revision later.
Copy-paste this prompt into your brief Claude Project:
Draft a [campaign / content / creative] brief for [PROJECT NAME]. Objective: [specific business outcome] Audience: [specific persona from our ICP] Key insight: [what we know about the audience that competitors do not] Proof points: [what we can credibly claim] Deliverables: [specific outputs needed] Timeline: [dates] Budget: [range] Success metrics: [how we will measure] Use our standard brief structure (in knowledge base). Match the tone of the example briefs. Flag anything missing with [TK: ...]. Maximum 600 words.
1. Skipping the Project setup. Without ICP and voice loaded, briefs come out generic. Set up once, use forever.
2. Using AI to write the strategic insight. The "what we know that competitors do not" line is your strategic IP. AI cannot generate it.
3. Letting AI invent proof points. Claude will sometimes fabricate stats or wins. Always verify claims about your business.
4. Treating it as one-and-done. The brief Project should be refreshed quarterly with new winning examples. Voice and standards evolve.