complexity-routing

name	complexity-routing
description	Complexity assessment and agent routing — classifies tasks by complexity tier and selects the optimal agent roster and model tier. Use when routing tasks, assessing complexity, or selecting agents.
user-invocable	false

Complexity Routing

Tier Classification

Assess every incoming request against these signals:

INSTANT (handle directly)

• Single factual question
• Clarification of existing decision
• Status check or summary request
• No code changes needed

STANDARD (plan → implement → review)

• Single-file or few-file change
• Well-understood pattern
• Clear requirements, no ambiguity
• No security or architectural implications

DEEP (research → plan → implement → review → security)

• Multi-file or multi-module change
• Requires investigation or research first
• Security-sensitive components involved
• New integration or API surface
• Performance-critical path

ULTRADEEP (research → plan → architect → implement → trilateral review)

• Architectural change or new system design
• Cross-cutting concerns (auth, data model, API contract)
• Compliance or regulatory implications
• Irreversible changes (data migration, public API)
• Multiple team/role involvement needed

Agent Roster by Tier

Tier	Required Agents	Optional Support
INSTANT	Conductor only	—
STANDARD	Planner → Implementer → Reviewer	Doc-Updater
DEEP	Researcher → Planner → Implementer → Reviewer → Security-Reviewer	Test-Architect, Deploy-Engineer
ULTRADEEP	Researcher → Planner → Architect → Implementer → Reviewer + Red-Team + Security-Reviewer	Threat-Modeler, Test-Architect, Deploy-Engineer

Model Tier Selection

Agent Role	STANDARD	DEEP	ULTRADEEP
Orchestration	sonnet	opus	opus
Planning	sonnet	opus	opus
Implementation	sonnet	sonnet	sonnet
Review	sonnet	opus	opus
Security	—	opus	opus
Support	haiku	haiku	sonnet

Signal Detection Keywords

• INSTANT: "what is", "how do I", "explain", "show me", "status"
• STANDARD: "fix", "add", "update", "change", "implement"
• DEEP: "integrate", "secure", "migrate", "refactor", "optimize"
• ULTRADEEP: "redesign", "architect", "rebuild", "replace", "new system"