Mutation testing has a targeting problem
Most tools treat code like a flat surface: every line gets the same attention. That’s how you end up with thousands of mutations that don’t change meaningful behavior.
Intent makes better mutants
MutantZero classifies functions into a small set of archetypes. Each archetype suggests different mutation operators, risk heuristics, and review UX.
Examples:
- Guard: focus on boundary conditions, permission checks, validation logic
- Transformer: focus on mapping rules, string and array transforms
- DTO: skip (pure data carriers)
The benefit
Fewer mutants, more signal — and a workflow that feels like you’re playing a game with a clear objective.