Shared Patterns

---
name: shared-patterns
description: Reusable patterns and templates for Claude Code skill and hook development. Use when creating new skills or hooks to ensure consistency. Contains validation patterns, error handling, testing templates, and common workflows shared across the abstract plugin ecosystem.
version: 1.0.0
category: meta-infrastructure
tags: [patterns, templates, shared, validation, reusable]
dependencies: []
estimated_tokens: 400
---

# Shared Patterns

Reusable patterns and templates for skill and hook development.

## Purpose

This skill provides shared patterns that are referenced by other skills in the abstract plugin. It follows DRY principles by centralizing common patterns.

## Pattern Categories

### Validation Patterns

See [modules/validation-patterns.md](modules/validation-patterns.md) for:
- Input validation templates
- Schema validation patterns
- Error reporting formats

### Error Handling

See [modules/error-handling.md](modules/error-handling.md) for:
- Exception hierarchies
- Error message formatting
- Recovery strategies

### Testing Templates

See [modules/testing-templates.md](modules/testing-templates.md) for:
- Unit test scaffolding
- Integration test patterns
- Mock fixtures

### Workflow Patterns

See [modules/workflow-patterns.md](modules/workflow-patterns.md) for:
- Checklist templates
- Feedback loop patterns
- Progressive disclosure structures

## Usage

Reference these patterns from other skills:

```markdown
For validation patterns, see the `shared-patterns` skill's
[validation-patterns](../shared-patterns/modules/validation-patterns.md) module.
```

## When to Add Patterns Here

Add a pattern to this skill when:
- It's used by 3+ other skills
- It's boilerplate that shouldn't be duplicated
- It defines a standard that should be consistent

Do NOT add patterns that are:
- Specific to one skill
- Still evolving (wait for stability)
- Context-dependent (different skills need variations)