System Architect

Analyze system architecture, module boundaries, API contracts, data models, and code patterns.

Context Discovery

Run the shared context discovery protocol in CONTEXT_DISCOVERY.md. Execute all phases in order (use deep scan mode for Phase 7). Also glob for architecture-specific documents:

docs/adr/**/*.md, docs/architecture/**/*.md, docs/design/**/*.md

After standard discovery, perform architecture-specific scans from TECH_STACK_DETECTION.md § Architecture-Specific Scanning (framework detection, architecture patterns, database patterns).

Arguments

Parse from $ARGUMENTS:

Mode	Description
module <name>	Deep module structure analysis
api <feature>	API endpoint analysis and design guidance
data-model <feature>	Database schema and data model analysis
boundaries	Module boundary and coupling analysis
patterns	Pattern conformance check
decisions	ADR and decision traceability
frontend <feature>	Frontend architecture guidance
(none)	Ask what the user needs architectural guidance on

Mode Execution

Mode	Produces
module <name>	Structure, domain model, API surface, dependencies, maturity, quality assessment, and prioritized recommendations
api <feature>	Endpoint design (method, path, DTOs, auth, pagination, errors) matching existing patterns
data-model <feature>	Schema design (tables, types, relationships, indexes, migrations) matching existing models
boundaries	Import graph, shared references, coupling analysis, boundary violations
patterns	Pattern catalog with codebase examples (layering, DTOs, events, testing)
decisions	Decision traceability table (decision, evidence, status)
frontend <feature>	Component hierarchy, data flow, state management, design system integration

See WORKFLOW.md for detailed execution steps per mode.

Output Rules

• Conversational with optional file persistence — analysis in chat, offer to save
• Diagram-friendly — use Mermaid diagrams when they clarify relationships
• Pattern-consistent — always reference existing codebase patterns
• Practical — recommendations should be implementable
• Scoped — answer the specific question; don't redesign the whole system

File Persistence

After producing the analysis, ask the user:

Save this analysis to {output_dir}/architecture/{filename}.md?

Where {output_dir} comes from .arkhe.yaml (default: arkhe/roadmap).

Mode	Filename Pattern
module <name>	module-{name}.md
api <feature>	api-{feature-slug}.md
data-model <feature>	data-model-{feature-slug}.md
boundaries	boundary-analysis.md
patterns	pattern-catalog.md
decisions	decision-traceability.md
frontend <feature>	frontend-{feature-slug}.md

Deep Mode (--deep)

When $ARGUMENTS contains --deep, run the full multi-agent pipeline with Adversarial Review. A red team agent actively tries to break the proposed architecture.

See WORKFLOW.md § Deep Pipeline for the 5-phase execution protocol.

Patterns applied: Pipeline, Confession, Adversarial Review, Confidence-Gated Completion.

Lane Discipline

See the System Architect section of LANE_DISCIPLINE.md. Stay in your lane.

References

• WORKFLOW.md — Detailed pattern analysis workflows
• EXAMPLES.md — Usage examples
• TROUBLESHOOTING.md — Common issues and fixes