Encode the domain in the right structure: state machine, typed model, table, registry, reducer, boundary, or collection instead of scattered conditionals. Use when when stateful logic accumulates branches or repeated shape assumptions.
Installs into .claude/skills of the current project.
Are you the author of Principle Model The Domain?
Add the live security badge to your README. It updates with every re-scan.
[](https://www.skillsdirectory.com/skills/theonlyfusioncube-principle-model-the-domain)
---
name: principle-model-the-domain
description: Encode the domain in the right structure: state machine, typed model, table, registry, reducer, boundary, or collection instead of scattered conditionals. Use when when stateful logic accumulates branches or repeated shape assumptions.
---
# Model the Domain
## Trigger
When stateful logic accumulates branches or repeated shape assumptions.
## Rule
Encode the domain in the right structure: state machine, typed model, table, registry, reducer, boundary, or collection instead of scattered conditionals.
## Application
1. Name the concrete decision this principle changes.
2. Apply the rule to that decision, not as a decorative citation.
3. Prefer evidence from the current repository/runtime over generic preference.
4. If the principle conflicts with an explicit user constraint, keep the constraint and state the tradeoff.
