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Agent Skill

Proto Persona skill

proto-personadeanpeters/Product-Manager-Skillsskills/proto-persona/SKILL.md

Create a proto-persona from current research, market signals, and team knowledge. Use when you need a working customer profile before deeper validation.

7.6k

always on

32 tokname + description

once used

2,769 tokSKILL.md body

bundled files

39 KB

repo stars

7.6kGitHub

Install the Proto Persona skill

Skills CLI (Claude Code, Codex, Cursor and others)

npx skills add https://github.com/deanpeters/Product-Manager-Skills --skill proto-persona

Claude Code, by hand (all projects)

git clone --depth 1 https://github.com/deanpeters/Product-Manager-Skills.git /tmp/Product-Manager-Skills
mkdir -p ~/.claude/skills
cp -R /tmp/Product-Manager-Skills/skills/proto-persona ~/.claude/skills/proto-persona

For one project only, copy the folder into .claude/skills/ in that project instead. The agent picks it up when a task matches its description.

What it costs your context

Agent Skills load in three steps. Tokens counted with the o200k tokenizer; your model's count will differ a little.

WhenWhat loadsCost
Every sessionName and description32 tok
When the agent uses itThe SKILL.md instructions2,769 tok
Only if opened3 bundled files (9 KB)varies

Until it is used, proto-persona costs about 43× less than the median MCP server we measured (1,362 tokens on every turn). Installing all 77 skills from deanpeters/Product-Manager-Skills would load 2,883 tokens of descriptions. Skills vs MCP study

Checks

Our checks found nothing to flag: it follows the Agent Skills specification's naming and size guidelines and doesn't pipe downloads into a shell.

Checked 2026-10-22 · method

What's inside

The headings of its SKILL.md. Read the full file on GitHub.

  • Purpose
  • Input
  • Key Concepts
  • What is a Proto-Persona?
  • Proto vs. Validated Persona
  • Why Use Proto-Personas?
  • Anti-Patterns (What This Is NOT)
  • When to Use This
  • When NOT to Use This
  • Application
  • Step 1: Gather Available Context
  • Step 2: Define the Persona's Identity
  • Step 3: Capture Their Voice
  • Step 4: Document Their Context
  • Step 5: Understand Their Influences
  • Step 6: Validate and Iterate
  • Examples
  • Common Pitfalls
  • Pitfall 1: Demographics Without Behavior
  • Pitfall 2: Treating Proto-Persona as Fact
  • Pitfall 3: Creating 10 Proto-Personas
  • Pitfall 4: Fabricating Quotes
  • Pitfall 5: Never Validating
  • References

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