craft-contextlisted

# Skill: Craft Context > "When an action needs too many parameters, the parameters become the object." ## The Standard 1. **Private Constructor**: Direct instantiation blocked. Forces use of named factories. 2. **Named Factories**: `::forProvider()`, `::forBatch()`. Intent in the name. 3. **Self-Validating**: Validate in constructor. Invalid context throws immediately. 4. **Immutable**: `readonly class`. Set once, read many. No setters. ## The Anti-Patterns | ❌ Don't | ✅ Do | Why | |-----------------------------|-------------------------------|-------------------------------| | 5+ action parameters | Context object | Clarity, maintainability | | Generic constructor | Named constructors | Intent is explicit | | Mutable context | Immutable properties | Prevents bugs in long chains | | Array of options | Typed properties | IDE support, validation | ## Real-World Examples See [examples.md](examples.md).