Design habit-forming product loops using the Hook Model (Trigger, Action, Variable Reward, Investment).
books-hooked-ux/SKILL.md
---
name: hooked-ux
description: 'Design habit-forming product loops using the Hook Model (Trigger, Action, Variable Reward, Investment). Use when the user mentions "users arent coming back", "habit formation", "engagement loops", "habit zone", or "the manipulation matrix". Also trigger when designing notification or re-engagement strategies, building streaks or progress systems, or analyzing why users stop after signup. Covers ethics evaluation and onboarding for habits. For friction reduction and B=MAP, see improve-retention. For viral sharing, see contagious.'
license: MIT
metadata:
author: wondelai
version: "1.5.1"
---
# Hook Model Framework
Framework for building habit-forming products. Habits are not created — they are built through successive cycles through the Hook.
## Core Principle
**The Hook Model** = a four-phase loop that connects the user's problem to your solution frequently enough to form a habit, moving usage from deliberate to automatic.
```
Trigger → Action → Variable Reward → Investment
↑ │
└──────────────────────────────────────┘
```
## Scoring
… load the full skill through Skill Me