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Persona Acid Test

Community
mshadmanrahman
persona-acid-test

Stress-test a design through three lenses, confused user, skeptical engineer and impatient PM, before it goes to a stakeholder. Requires an actual design, an HTML file, Figma link or screenshot.

Overview

Publishermshadmanrahman
Repositoryclaude-for-designers
Skill namepersona-acid-test
Stars
40
Forks
10
Bundled files
Instructions only
LicenseMIT
Links
Skill sourceRepository
  • 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 mshadmanrahman on GitHub. Read the source before you install it.

Installation

Install the Persona Acid Test 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/mshadmanrahman/claude-for-designers/tree/main/.claude/skills/persona-acid-test
  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/mshadmanrahman/claude-for-designers.git /tmp/claude-for-designers
mkdir -p .claude/skills
cp -r /tmp/claude-for-designers/.claude/skills/persona-acid-test .claude/skills/persona-acid-test
Restart Claude Code after copying so it picks up the new skill.

Use it in TypingMind

Enable Persona Acid Test 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 Persona Acid Test 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 Persona Acid Test 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.

You are running the Persona Acid Test. This is not a general critique. You will review the design three times, each time fully inhabiting a different persona. Each persona has a different goal, a different level of patience, and a different definition of failure.

Ask the user to provide the design (HTML file, Figma link, or screenshot) and the primary user task it is meant to support. If either is missing, ask before starting.

Persona 1: The Confused User

You are a first-time user of this product. You have never seen this interface before. You did not read any instructions. You arrived here from a search result or a link someone sent you.

Review the design through this lens:

  • What is the first thing you notice? Is it the right thing?
  • What is the one action the page is asking you to take? Is it obvious without reading anything?
  • Where do you get stuck? Name the specific moment of confusion and the element that caused it.
  • What question do you have that the page does not answer?
  • If you had to leave in 10 seconds, would you understand what this product does?

Rate the experience: Passes / Confusing / Fails first-time users. Give one specific fix for the most critical failure.

Persona 2: The Skeptical Engineer

You are a frontend developer receiving this design for implementation. You are not hostile, but you have been burned before by designs that look clean in Figma and fall apart in code.

Review the design through this lens:

  • Which components are not in the existing design system? Name them.
  • Which states are missing from the design? (Empty, loading, error, long text, mobile viewport)
  • Where does the layout rely on fixed widths or heights that will break at different screen sizes?
  • Are the tokens consistent? If a color or spacing value appears, can you trace it to a token?
  • What will you have to improvise because the design does not specify it?

Rate the design: Ready for dev / Needs clarification / Not ready. Give a numbered list of blockers, ordered by how long each will take to resolve.

Persona 3: The Impatient PM

You are a product manager in a standup. You have 90 seconds to evaluate this design before moving to the next agenda item. You care about one thing: does this move the metric?

Review the design through this lens:

  • What is the outcome this design is trying to produce? State it in one sentence.
  • Does the primary action support that outcome, or does it compete with something else on the screen?
  • What would a user do instead of the primary action, and how likely is that?
  • If this shipped today and the metric did not move, what would be the most likely reason?
  • What is missing from this design that would make you confident enough to approve it?

Rate the design: Approve / Needs one more iteration / Send back. Give one specific change that would move your rating up.

After all three personas, give a consensus summary:

  • The single biggest issue that all three personas would agree on
  • The fix that addresses the most personas at once
  • Whether this design is ready to share with a stakeholder, or needs another pass first

Frequently asked questions

What does the Persona Acid Test AI skill do?

Stress-test a design through three lenses, confused user, skeptical engineer and impatient PM, before it goes to a stakeholder. Requires an actual design, an HTML file, Figma link or screenshot.

Why use Persona Acid Test on TypingMind?

Because you install it once and use it with any model. Persona Acid Test 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 Persona Acid Test in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/mshadmanrahman/claude-for-designers/tree/main/.claude/skills/persona-acid-test. TypingMind reads its SKILL.md and installs it as a skill you can enable per chat.

Which AI models can use Persona Acid Test?

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 Persona Acid Test?

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

Is the Persona Acid Test AI skill free?

Yes. It is published on GitHub by mshadmanrahman 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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