Pattern Index

Consolidated from pattern-catalog.md and PATTERN-INDEX.md Format: ADR-style numbered patterns

Total Patterns: 44 patterns (001-044) + template (000)

Pattern Categories

Core Architecture Patterns

Foundational patterns for system architecture and infrastructure

• Pattern-001: Repository Pattern - Data access encapsulation
• Pattern-002: Service Pattern - Business logic organization
• Pattern-003: Factory Pattern - Object creation abstraction
• Pattern-004: CQRS-lite Pattern - Command/query separation
• Pattern-005: Transaction Management - Data consistency
• Pattern-007: Async Error Handling - Error propagation
• Pattern-008: DDD Service Layer - Domain organization
• Pattern-014: Error Handling API Contract - API error contracts
• Pattern-015: Internal Task Handler - Task processing patterns
• Pattern-017: Background Task Error Handling - Async error management
• Pattern-034: Error Handling Standards - REST-compliant HTTP status codes and error responses

Data & Query Patterns

Data access, session management, and query abstraction patterns

• Pattern-013: Session Management - Database session handling
• Pattern-016: Repository Context Enrichment - Context-aware data access
• Pattern-023: Query Layer Patterns - Query abstraction layers
• Pattern-025: Canonical Query Extension - Query extension patterns
• Pattern-026: Cross-Feature Learning - Feature learning integration

AI & Intelligence Patterns

AI coordination, spatial intelligence, and language model integration patterns

• Pattern-012: LLM Adapter - Language model integration
• Pattern-019: LLM Placeholder Instruction - AI instruction patterns
• Pattern-020: Spatial Metaphor Integration - Spatial AI context
• Pattern-022: MCP+Spatial Intelligence Integration - MCP spatial patterns
• Pattern-028: Intent Classification - Natural language intent routing
• Pattern-029: Multi-Agent Coordination - Specialized agent orchestration
• Pattern-032: Intent Pattern Catalog - Regex pattern management for intent classification
  • 44 total patterns across TEMPORAL (17), STATUS (14), PRIORITY (13)
  • 92% canonical query coverage achieved (Phase 3 expansion)

Integration & Platform Patterns

External system integration, plugin architecture, and platform connectivity patterns

• Pattern-018: Configuration Access - Configuration management
• Pattern-027: CLI Integration - Command-line interface patterns
• Pattern-030: Plugin Interface - Extensible integration architecture
• Pattern-031: Plugin Wrapper - Adapter pattern for integration routers
• Pattern-033: Notion Publishing - Knowledge management publishing
• Pattern-035: MCP Adapter Methods - Backward-compatible MCP migration pattern (ADR-013 Phase 2)
• Pattern-040: Integration Swappability Guide - Router pattern for pluggable provider implementations

Development & Process Patterns

Development methodology, quality assurance, and workflow management patterns

• Pattern-006: Verification-First - Methodology approach
• Pattern-009: GitHub Issue Tracking - Process management
• Pattern-010: Cross-Validation Protocol - Quality assurance
• Pattern-011: Context Resolution - Implicit context resolution
• Pattern-021: Development Session Management - Dev workflow sessions
• Pattern-024: Methodology Patterns - Development methodology patterns
• Pattern-036: Signal Convergence - Multi-analyzer breakthrough detection (META-PATTERN)
• Pattern-037: Cross-Context Validation - Concept validation across contexts (META-PATTERN)
• Pattern-038: Temporal Clustering - Coordination analysis via temporal grouping (META-PATTERN)
• Pattern-039: Feature Prioritization Scorecard - Quantified feature prioritization framework
• Pattern-041: Systematic Fix Planning - Phase-based approach to multi-issue resolution
• Pattern-042: Investigation-Only Protocol - Separation of bug investigation from fixing
• Pattern-043: Defense-in-Depth Prevention - Multi-layer protection against discovered vulnerabilities
• Pattern-044: MCP Skill Testing - Testing patterns for MCP skill development

Pattern Development

Creating New Patterns

See pattern-000-template.md for the standard template when creating new patterns.

Pattern Status Levels

• Proven: Established patterns with extensive usage
• Emerging: New patterns with initial validation
• Experimental: Patterns under active development
• Deprecated: Legacy patterns being phased out

Navigation

• Main Documentation - Return to main docs
• Architecture Overview - System architecture documentation
• Development Guides - Developer resources

Legacy References

• Original catalog: ../architecture/pattern-catalog.md
• Previous index: archive/PATTERN-INDEX-legacy.md

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Last updated: December 1, 2025 All 44 patterns now included with logical categorization Latest addition: Pattern-044 (MCP Skill Testing)