who-is-this-for — Claude Code skill: ICP and setup
This skill helps define a narrower ideal customer profile and map the people involved in a sale. Use it when “developers” is the only audience description you have.
npx skills add AIDevGTM/gtm-cofounder --skill 02-who-is-this-for -a claude-codeWhat who-is-this-for does
The skill helps shape an ICP that rules out poor-fit segments and separates the person adopting a product from the person approving its cost. It maps who discovers the product, assesses it, and pays. When the adopter does not control the budget, each role needs a distinct reason to care.
To build the ICP, it asks for the company context, technical situation, purchase trigger, customer-stated pain, and a segment to exclude. It also turns a job into a situation, motivation, and desired outcome. That gives a vague “for developers” pitch a specific use case.
What it helps with
- narrow an ICP by naming excluded segments
- distinguish product adopters from budget holders
- map the roles involved in a complex sale
- describe a customer job through its trigger and outcome
Example prompts for the agent
- Help me define an ICP for this product and identify who it is not for.
- Map who discovers, evaluates, and pays for our product.
- Turn this customer need into a situation, motivation, and expected outcome.
How to install who-is-this-for
1Skills CLI (Vercel)
npx skills add AIDevGTM/gtm-cofounder --skill 02-who-is-this-for -a claude-code2Manually: put the files in place
~/.claude/skills/02-who-is-this-for/SKILL.mdCopy the whole skill folder; for one project use .claude/skills/02-who-is-this-for/
1Skills CLI (Vercel)
npx skills add AIDevGTM/gtm-cofounder --skill 02-who-is-this-for -a codex2Manually: put the files in place
.agents/skills/02-who-is-this-for/SKILL.mdFor all projects use ~/.agents/skills/
1Skills CLI (Vercel)
npx skills add AIDevGTM/gtm-cofounder --skill 02-who-is-this-for -a cursor2Manually: put the files in place
.cursor/skills/02-who-is-this-for/SKILL.mdCursor also reads .agents/skills/ and .claude/skills/
1GitHub CLI
gh skill install AIDevGTM/gtm-cofounder 02-who-is-this-for2Manually: put the files in place
.github/skills/02-who-is-this-for/SKILL.md1Skills CLI (Vercel)
npx skills add AIDevGTM/gtm-cofounder --skill 02-who-is-this-for -a gemini-cli2Platform CLI
gemini skills install https://github.com/AIDevGTM/gtm-cofounder --path skills/02-who-is-this-forManually: put the files in place
.devin/skills/02-who-is-this-for/SKILL.mdThe legacy .windsurf/skills/ path still works
Skills CLI (Vercel)
npx skills add AIDevGTM/gtm-cofounder --skill 02-who-is-this-for -a opencodeClaude.ai
Zip the folder and upload it in Settings → Capabilities → Skills
Step by step, with commands for each platform: How to install skills in Claude Code: five ways
Questions about who-is-this-for
How do I install who-is-this-for in Claude Code?
Run npx skills add AIDevGTM/gtm-cofounder --skill 02-who-is-this-for -a claude-code. The skill file is at ~/.claude/skills/02-who-is-this-for/SKILL.md.
What does who-is-this-for do?
It helps define an ICP, map the people involved in a sale, and express a customer job through its situation and desired result. The ICP includes a segment the product deliberately excludes.
How does the skill distinguish an adopter from a buyer?
It treats the developer who finds and advocates for a product separately from the person with budget authority who approves the purchase.
Source text
SKILL.md · MIT
---
name: who-is-this-for
description: "Define a real ICP and the developer personas in the sale. Use when the user says the product is \"for developers,\" can't name who would say no, or is marketing to whoever holds the budget instead of who actually adopts."
---
# Who is this for?
> "Developers" is not a market. It's a medium. If your ICP doesn't exclude anyone, it isn't one.
**Use this when:** you describe your user as "developers" or "engineering teams," you can't name a person who is clearly *not* a fit, or you're aiming your messaging at the VP of Engineering because they have the budget.
## The core idea
A usable ICP is specific enough that some people are obviously **out**. "Every developer" gives you nothing to say, because a message that speaks to everyone speaks to no one. Sharpen until exclusion is possible.
And in almost every AI/dev-tool sale there is **more than one person**: the developer who adopts is rarely the person who pays. Market to the adopter; sell to the buyer. Confuse the two and you get great meetings and no decisions.
## Framework 1: The personas in the sale (Frankl)
Map who plays each role. You need all of them for a complex sale; skip one and the deal stalls.
| Persona | Cares about | Role in the sale |
|---|---|---|
| **Alpha Dev** | "What's possible?" Lives in the future. *No budget.* | Finds you, experiments, advocates internally, creates social proof |
| **Empowered CTO** | Kairos, weeks off a release cycle, competitive edge. *Has budget.* | Approves spend and strategic fit |
| **VP Engineering** | Team velocity, DX, quality at scale. Fears downtime/security | Evaluates feasibility, tests in staging |
| **SRE / Platform Eng** | Reliability, less toil. *Reads your code before your copy.* | Gatekeeps operational risk |
> The Alpha Dev is **not your long-term customer**. They chase the next shiny thing. You need them anyway: they carry new tech to the people who pay.
## Framework 2: Jobs to be done, not demographics (Czakon)
A job title is not actionable; a **job** is. Write it as:
> *When [situation], I want to [motivation], so I can [expected outcome].*
Example: *"When I inherit a service with no tests, I want to generate a safety net fast, so I can refactor without fear."* That sentence tells you the trigger, the pain, and the win. A demographic never does.
## Decision tree: single-player or complex sale?
```
Does the developer who adopts also control the budget?
├─ YES → single-player / PLG motion.
│ ICP centers on the adopter. Optimize time-to-value, self-serve, transparent pricing.
└─ NO → complex sale.
ICP centers on the adopter FOR ADOPTION, and the buyer FOR REVENUE.
You need a "what's in it for me" for every persona above.
```
## Sharpen it: the 5-attribute ICP
Fill every line with something a stranger couldn't guess:
1. **Company shape**: stage, size, team structure (e.g. "50-500-engineer companies with a platform team")
2. **Technical context**: stack / recent change (e.g. "just adopted Kubernetes")
3. **The trigger**: what just happened that makes this urgent now
4. **The pain, in their words**: the exact phrase they'd use (get this from `talk-to-users`)
5. **Who says no**: the segment you are deliberately *not* for
## Mistakes that look reasonable
- **TAM theater**: "there are 30M developers." True and useless. Nobody sells to 30M anyone.
- **Budget-chasing**: writing everything for the CTO/VP because they pay. They don't visit your homepage; the developer does.
- **Persona = job title**: "backend engineers." That's a hat, not a human. Use the job.
- **One persona, complex sale**: nailing the Alpha Dev and forgetting the buyer → adoption with no revenue.
## Example
❌ "For developers who want to ship faster."
✅ "For **platform engineers at 50-500-eng companies who just standardized on Kubernetes** and are drowning in hand-written YAML, the ones who'd say *'I spend a day a week on manifests I shouldn't have to touch.'* Not for solo devs on Heroku."
## Your next 30 minutes
- [ ] Write your ICP with all 5 attributes filled in, including **who says no**.
- [ ] List every persona in your sale and mark: who *finds* it, who *evaluates* it, who *pays*.
- [ ] Rewrite your one-line pitch as a **Job To Be Done** (`When… I want… so I can…`).
- [ ] If you couldn't fill attribute #4 in their real words → you owe yourself `talk-to-users` before anything else.
---
Built from real dev-tool GTM experience, with frameworks from Adam Frankl (*The Developer-Facing Startup*) and Jakub Czakon (*markepear.dev*).
Stuck on whether the ICP is right, or seeing two personas pull in different directions? That's worth a human call. Reach out to me on [LinkedIn](https://www.linkedin.com/in/devtoolgtm/).
© AIDevGTM · MIT · AIDevGTM/gtm-cofounder