Product & Innovation

Hooked UX

Name: Hooked
Author: Nir Eyal
ISBN: 1591847788

Habit-forming product design

Build habit-forming products using Nir Eyal's Hook Model. This skill helps your AI agent design trigger-action-reward-investment loops that keep users coming back, increasing engagement and long-term retention naturally.

Hooked

by Nir Eyal

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Install this skill

npx skills add wondelai/skills/hooked-ux

Key Concepts

What your agent learns

The Hook Model

Four steps that create habits: Trigger → Action → Variable Reward → Investment.

External & Internal Triggers

Start with external triggers (notifications, emails) and transition to internal triggers (emotions, routines).

Reducing Friction

Make the desired action as easy as possible — fewer steps, less thinking, lower effort.

Variable Rewards

Unpredictable rewards (social validation, content discovery, personal achievement) drive repeated engagement.

Investment Phase

Get users to invest time, data, or effort that makes the product more valuable with each use.

About the Author

Nir Eyal

Stanford lecturer, behavioral design expert

Nir Eyal has taught at Stanford's Graduate School of Business and Hasso Plattner Institute of Design. He spent years in the video gaming and advertising industries, studying how technology shapes behavior.

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Example Prompts

Try these with the skill installed

Map the Hook cycle for my social media app using hooked-ux skill

Product design

Design variable rewards for my learning platform using hooked-ux skill

Engagement

Identify internal triggers we should associate with our product using hooked-ux skill

Behavioral design

Create investment mechanisms that increase switching costs using hooked-ux skill

Retention

Install Hooked UX

Free, open-source, and ready in 30 seconds.