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Who Is This For

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AIDevGTM
who-is-this-for

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.

Overview

PublisherAIDevGTM
Repositorygtm-cofounder
Skill namewho-is-this-for
Stars
323
Forks
31
Bundled files
Instructions only
LicenseMIT
Links
  • Markdown instructions

    A SKILL.md file the model loads on demand, so it only costs tokens when a request actually matches.

  • Works with any LLM

    AI skills are plain Markdown, not provider-specific code, so this works with GPT, Claude, Gemini, Grok, or a local model.

  • Self-contained

    Everything the model needs lives in the instructions — no extra files to sync.

  • Open source

    Published by AIDevGTM on GitHub. Read the source before you install it.

Installation

Install the Who Is This For AI skill in TypingMind to use it with any LLM, or drop it into another agent that reads SKILL.md.

1

Install in TypingMind

TypingMind installs a skill straight from its GitHub folder — it reads SKILL.md, bundles the resource files, and stores the result locally.

  1. Open the app and go to Plugins → Skills.
  2. Choose "Install from GitHub".
  3. Paste the skill folder URL below and confirm.
    https://github.com/AIDevGTM/gtm-cofounder/tree/main/skills/02-who-is-this-for
  4. Enable the skill in any chat where you want it available.
Plugins → Skills → Add skill → From GitHub URL, then paste the folder URL and press Continue.
2

Install in another agent

Any agent that reads the Agent Skills format can use this skill — copy the folder into that agent's skills directory.

Claude Code — .claude/skills
git clone --depth 1 https://github.com/AIDevGTM/gtm-cofounder.git /tmp/gtm-cofounder
mkdir -p .claude/skills
cp -r /tmp/gtm-cofounder/skills/02-who-is-this-for .claude/skills/who-is-this-for
Restart Claude Code after copying so it picks up the new skill.

Use it in TypingMind

Enable Who Is This For in any TypingMind chat and the model takes it from there. Its name and description sit in the system prompt, and the moment a request matches, the model loads the full instructions itself — you never invoke it by hand, and it costs no tokens until it is actually used.

The model loads Who Is This For on its own as soon as a request matches it.

Works with any AI model

AI skills are plain Markdown instructions rather than provider-specific code, so Who Is This For is not tied to the model it was written for. Install it once in TypingMind and use it with GPT-5, Claude, Gemini, Grok, DeepSeek, Mistral, Llama, or a local model you run yourself — all on your own API keys.

  • Loaded only when it is needed

    The system prompt carries just the name and description. The instructions are fetched on the first matching request, so an idle skill costs nothing.

  • Switch models mid-chat

    Because the skill is instructions rather than code, changing model does not break it — the next model reads the same SKILL.md.

Skill instructions

This is the SKILL.md content the model loads. Read it before installing — a skill is instructions your model will follow.

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.

PersonaCares aboutRole in the sale
Alpha Dev"What's possible?" Lives in the future. No budget.Finds you, experiments, advocates internally, creates social proof
Empowered CTOKairos, weeks off a release cycle, competitive edge. Has budget.Approves spend and strategic fit
VP EngineeringTeam velocity, DX, quality at scale. Fears downtime/securityEvaluates feasibility, tests in staging
SRE / Platform EngReliability, 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.

Frequently asked questions

What does the Who Is This For AI skill do?

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.

Why use Who Is This For on TypingMind?

Because you install it once and use it with any model. Who Is This For is plain Markdown rather than provider-specific code, so the same skill runs on GPT-5, Claude, Gemini, Grok, or a local model — and you can switch model mid-chat without it breaking. TypingMind runs on your own API keys, so you pay providers directly instead of a per-seat subscription, and your skills and chats stay in your own storage.

How do I install Who Is This For in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/AIDevGTM/gtm-cofounder/tree/main/skills/02-who-is-this-for. TypingMind reads its SKILL.md and installs it as a skill you can enable per chat.

Which AI models can use Who Is This For?

Any model you connect in TypingMind. AI skills are plain Markdown instructions rather than provider-specific code, so GPT, Claude, Gemini, Grok, and local models can all load this skill when a request matches it.

How many AI models can I use with Who Is This For?

As many as you like. As long as a model supports skills, you can use Who Is This For with it — GPT, Claude, Gemini, Grok, DeepSeek, Mistral, Llama and more — all on TypingMind with your own API keys.

Is the Who Is This For AI skill free?

Yes. It is published on GitHub by AIDevGTM under the MIT license. You only pay your own AI provider for the tokens you use.

What are AI skills?

An AI skill is a reusable instruction bundle that teaches an AI model how to do one specific task. It follows the open Agent Skills format: a SKILL.md file with a name and description, plus any scripts, templates or reference files the model may need. The model reads the instructions only when your request matches the skill, so an installed skill costs nothing until it is used.

How are AI skills different from plugins or MCP servers?

A plugin or MCP server gives a model new tools to call — code that runs somewhere and returns a result. An AI skill gives the model knowledge and process instead: how to approach a task, which steps to follow, what good output looks like. Skills are plain Markdown, so they need no server, no API key and no runtime, and they work with any model.

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