---
name: case-study-writeup
description: "Write a client case study that sells future work — challenge, approach, results. Use when asked to write a case study, a client success story, a project write-up, or a portfolio case for consulting/agency work. Produces a results-led case study — the client & challenge, your approach, quantified outcomes, a client quote slot, and a takeaway — structured to win the next client. Ready to export as a designed PDF."
---

# Case Study Write-up Skill

A case study is your most persuasive sales asset — proof that you've solved *this kind of problem* before.
Weak ones narrate activities; strong ones lead with a result, show the before→after, and make the reader
(a future client) think "that's my problem too." This skill writes that — challenge → approach → quantified
outcome — ready for the themed PDF export or a portfolio page.

## Required Inputs

Ask for these only if they aren't already provided:

- **The client & context** — who (or an anonymised descriptor — "a Series B fintech"), and their situation.
- **The challenge** — the problem you were brought in to solve, and what was at stake.
- **What you did** — your approach and the key moves (your contribution, specifically).
- **The results** — outcomes with numbers (before → after); a client quote if you have one.

## Output Format

### Case Study: [outcome headline]

**Headline** — lead with the *result*, not the client ("Cut onboarding time 60% for a Series B fintech" — not "Acme Engagement"). It's the hook.

**1. The client & challenge** — who they are and the problem, framed so a similar prospect recognises themselves. The stakes (what it was costing them).

**2. The approach** — what you did and *why* — enough to show expertise and judgement, not a play-by-play. Highlight the insight or decision that mattered.

**3. The results** — quantified outcomes, **before → after**. Lead with the headline metric; add supporting ones. If numbers are confidential, use ranges ("~40% faster").

| Before | After |
|---|---|

**4. Client quote** — a slot for a testimonial (with name/title/company if permitted) — third-party validation is the most persuasive line.

**5. The takeaway** — one line on the transferable lesson / what this proves you can do — pointing the reader toward their own version of the problem.

**Note** (for the user): get client sign-off before publishing; anonymise where needed; lead every section with outcome over activity.

## Quality Checks

- [ ] The headline is the result, not the project/client name
- [ ] The challenge is framed so a similar prospect sees themselves in it
- [ ] Results are quantified (before → after), with ranges if confidential
- [ ] Your specific contribution is clear (not just "the team")
- [ ] Includes a client-quote slot for third-party proof
- [ ] Ends with a transferable takeaway that invites the next client

## Anti-Patterns

- [ ] Do not title it after the client/engagement — lead with the outcome; that's what pulls the reader in
- [ ] Do not narrate activities without results — "we ran workshops" proves nothing; show what changed
- [ ] Do not bury or omit the numbers — quantified outcomes are the whole point; use ranges if you must anonymise
- [ ] Do not publish without client consent — confirm sign-off and anonymisation first
- [ ] Do not blur your role into the team's — a prospect is hiring *you*; show what you did

## Based On

Case-study / social-proof marketing practice — result-led headline, challenge–approach–outcome, quantified before→after.