---

name: shared description: | Foundational infrastructure patterns shared across all leyline skills.

Triggers: leyline patterns, shared infrastructure, python imports, config patterns, leyline foundation, cross-skill patterns

Use when: other leyline skills need common patterns, creating new infrastructure skills, ensuring consistency across leyline plugin

DO NOT use directly: this skill is infrastructure for other leyline skills.

This skill provides shared patterns consumed by other leyline skills. category: infrastructure tags: [shared, patterns, infrastructure, foundation] provides: infrastructure: [python-imports, error-handling, config-patterns] reusable_by: [all leyline skills, conserve, conjure, abstract] estimated_tokens: 150

Shared Infrastructure for Leyline

Purpose

Foundational patterns for the leyline infrastructure layer. These patterns are used across all leyline skills and by plugins that depend on leyline.

Modules

Python Import Patterns

The modules/python-imports.md module documents how to import leyline utilities:

• Standard import paths
• Fallback patterns for different contexts
• Type hints and protocols

Error Handling Patterns

The modules/error-handling.md module standardizes error handling:

• Error classification (retryable, fatal, user-facing)
• Recovery strategies
• Logging conventions

Config Patterns

The modules/config-patterns.md module provides configuration standards:

• Environment variable naming
• YAML config file structure
• Default value handling

Leyline Architecture

leyline/skills/
├── shared/              # This skill - foundational patterns
├── mecw-patterns/       # Context window management
├── progressive-loading/ # On-demand content loading
├── evaluation-framework/# Scoring and decision thresholds
├── storage-templates/   # Knowledge storage formats
├── pytest-config/       # Testing infrastructure
├── testing-quality-standards/  # Test quality criteria
├── quota-management/    # Service quota tracking
├── usage-logging/       # Audit trail patterns
├── service-registry/    # Service configuration
├── error-patterns/      # Error handling
└── authentication-patterns/  # Auth verification

Integration Notes

Leyline provides the foundation layer. Other plugins reference leyline skills:

• conservation uses mecw-patterns, progressive-loading
• conjure uses quota-management, usage-logging, service-registry
• memory-palace uses evaluation-framework, storage-templates