# Product Market Fit

> Evaluate product-market fit for digital products using the Sean Ellis test, retention curves, organic growth, user pull, and repeat usage signals. Use when deciding whether a product should keep iterating, scale channels, start paid acquisition, or shift focus to retention and core value.

- Skill: `nickgallick/product-market-fit` (Agent Skill)
- Install (CLI): `npx skillmds add nickgallick/product-market-fit`
- Raw SKILL.md: https://api.skillmd.com/api/skills/nickgallick/product-market-fit/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Marketing & Growth
- Author: nickgallick (https://skillmd.com/u/nickgallick)
- Updated: 2026-09-08
- Page: https://skillmd.com/skills/nickgallick/product-market-fit

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# Product-Market Fit

Assess whether the product has real pull.

## Core tests
- Sean Ellis test
- retention curve test
- organic growth test
- pull vs push behavior

## Outputs
- PMF scorecard
- retention interpretation
- pre-PMF vs post-PMF decision guidance
- core-user profile
- next-step recommendations

## Rules
- Do not scale paid before PMF.
- Prioritize repeat usage and unsolicited demand over vanity traffic.
- For marketplaces, measure repeated participation and supply-demand health.