case-study-writer

---
name: case-study-writer
description: Turns a real customer result into a structured case study — situation, sticking point, intervention, numbers, quotes — plus a short social version cut from the same material. Use when a genuine result exists and needs to work as proof across the funnel.
argument-hint: "[the result + any notes, metrics, or customer quotes you have]"
---

# Case Study Writer — proof, structured

A case study is not a testimonial with padding. It is the story of a decision the reader is about to make, told by someone one step ahead of them. The structure does the selling: a before-state the reader recognises as their own, a mechanism they can believe, and numbers they could check.

## Inputs
- The customer result and all raw material — notes, metrics, quotes, timeline: $ARGUMENTS
- From `marketing-brief.md` if present: the ICP (so the story is framed for the right reader), the language bank, positioning & message, the banned-phrases list, and any rules on naming customers publicly.

## Do this
1. **Inventory the raw material:** who the customer is (and what may be named publicly), the before-state, what was actually done, the numbers with their timeframe, and verbatim quotes. List what is missing and ask once — none of it gets invented.
2. **Pressure-test the numbers.** Baseline, timeframe, and what else was happening that could explain the change. A number without a baseline is a claim, not proof — present it honestly or leave it out.
3. **Write the case study in this shape:**
   - **Title** — result-led and specific, no hype adjectives.
   - **The situation** — the before-state in the customer's words; the target reader should say "that's me" by line three.
   - **The sticking point** — what they had already tried and why it failed.
   - **The intervention** — what was done, step by step. The mechanism is the persuasive part; show the work.
   - **The numbers** — baseline to result, timeframe, context.
   - **In their words** — real quotes only, lightly trimmed, never improved.
   - **What this means for you** — the bridge to the reader, one CTA.
4. **Cut the social version:** hook, three-beat arc, one number, CTA — reshaped for the feed, not compressed from the long copy.
5. **Run the naming pass.** Apply the brief's rules on naming customers: keep the numbers, drop names where required, and note anything that needs the customer's sign-off before publishing.

## Output
The full case study, the social version, and a proof-integrity note: the source of every number and quote, plus what to confirm with the customer before it ships.

## Rules
- Every number and quote traces to a real source. Nothing composite, nothing illustrative — if it is not real, there is nothing to write.
- Curiosity belongs in the title, never in the numbers.
- The intervention sells the method, not the vendor. Readers trust work they can see.
- Keep the customer the hero. The company is the guide who turned up with a map.