How do I install the Model Router skill?

Run npx skillmds@latest add cyanluna-git/model-router in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

What does the Model Router skill do?

Model Router Skill It is listed under AI & ML on SkillMD.

Is Model Router safe to use?

This skill has not completed SkillMD's automated safety review yet. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Model Router?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Model Router free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Model Router?

cyanluna-git (@cyanluna-git) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Model Router by cyanluna-git — Agent Skill

Name: Model Router
Author: cyanluna-git

File contents

Model Router Skill

Metadata

name: model-router
version: 1.0.0
description: Intelligently route tasks to appropriate Claude model based on complexity
author: CPET Team
triggers:
  - patterns:
      - "(?:implement|build|create|develop|add|write|refactor|redesign|optimize|architect).*\\b(?:API|endpoint|feature|component|function|system|pipeline|framework|architecture)\\b"
      - "(?:plan|design|architect).*(?:full-stack|entire|comprehensive|system-wide|large-scale)"
      - "(?:refactor|rewrite|redesign)\\b.{0,50}\\b(?:all|entire|whole|complete|major)"
      - "(?:what|which|list|find|show|explain|describe)\\b.*\\b(?:files|functions|modules|components|how|logic)\\b"
      - "(?:analyze|investigate|debug|profile|check).*\\b(?:performance|efficiency|bottleneck|issue|problem)\\b"
    model_hints:
      - pattern: "(?:implement|build|develop)\\b.{0,100}\\b(?:API|endpoint|feature|component)\\b(?!.*refactor)(?!.*optimize)"
        model: sonnet
        reason: "Medium-scale feature implementation"
      - pattern: "(?:what|which|list|find|explain)\\b"
        model: haiku
        reason: "Simple query or search"
      - pattern: "(?:plan|design|architect|refactor|redesign|rewrite).*\\b(?:entire|all|whole|comprehensive|full-stack|system-wide)"
        model: opus
        reason: "Large-scale architecture or design"
      - pattern: "(?:analyze|profile|debug|optimize).*\\b(?:performance|efficiency|bottleneck)"
        model: sonnet
        reason: "Detailed analysis task"

proactive: true
auto_trigger: true

How It Works

Automatically detects task complexity from user input and routes to the appropriate model:

Detection Rules

Haiku (Fast) - Triggered by:
- Questions: "What files...", "Which modules...", "Explain...", "List..."
- Simple searches or lookups
- Code reading/understanding
Sonnet (Balanced) - Triggered by:
- Feature implementation: "Implement new API endpoint..."
- Detailed analysis: "Analyze performance..."
- Medium-scale changes (3-5 files)
Opus (Deep) - Triggered by:
- Architecture terms: "design", "architect", "plan"
- Scale keywords: "entire", "all", "full-stack", "comprehensive"
- Large refactoring: "Refactor entire...", "Redesign..."

Examples

User: "What files contain FATMAX logic?"
→ Auto-triggers Haiku

User: "Implement new API endpoint /api/vo2max/export"
→ Auto-triggers Sonnet

User: "Design the entire data pipeline from collection to visualization"
→ Auto-triggers Opus

Integration

Works seamlessly with:

CLAUDE.md Model Selection Guide (lines 100-137)
Explicit override: [Opus] your task forces specific model
Auto routing when no model specified

---name: model-routerdescription: Model Router Skill---# Model Router Skill## Metadata```yamlname: model-routerversion: 1.0.0description: Intelligently route tasks to appropriate Claude model based on complexityauthor: CPET Teamtriggers: - patterns: - "(?:implement|build|create|develop|add|write|refactor|redesign|optimize|architect).*\\b(?:API|endpoint|feature|component|function|system|pipeline|framework|architecture)\\b" - "(?:plan|design|architect).*(?:full-stack|entire|comprehensive|system-wide|large-scale)" - "(?:refactor|rewrite|redesign)\\b.{0,50}\\b(?:all|entire|whole|complete|major)" - "(?:what|which|list|find|show|explain|describe)\\b.*\\b(?:files|functions|modules|components|how|logic)\\b" - "(?:analyze|investigate|debug|profile|check).*\\b(?:performance|efficiency|bottleneck|issue|problem)\\b" model_hints: - pattern: "(?:implement|build|develop)\\b.{0,100}\\b(?:API|endpoint|feature|component)\\b(?!.*refactor)(?!.*optimize)" model: sonnet reason: "Medium-scale feature implementation" - pattern: "(?:what|which|list|find|explain)\\b" model: haiku reason: "Simple query or search" - pattern: "(?:plan|design|architect|refactor|redesign|rewrite).*\\b(?:entire|all|whole|comprehensive|full-stack|system-wide)" model: opus reason: "Large-scale architecture or design" - pattern: "(?:analyze|profile|debug|optimize).*\\b(?:performance|efficiency|bottleneck)" model: sonnet reason: "Detailed analysis task"proactive: trueauto_trigger: true```## How It WorksAutomatically detects task complexity from user input and routes to the appropriate model:### Detection Rules1. **Haiku (Fast)** - Triggered by: - Questions: "What files...", "Which modules...", "Explain...", "List..." - Simple searches or lookups - Code reading/understanding2. **Sonnet (Balanced)** - Triggered by: - Feature implementation: "Implement new API endpoint..." - Detailed analysis: "Analyze performance..." - Medium-scale changes (3-5 files)3. **Opus (Deep)** - Triggered by: - Architecture terms: "design", "architect", "plan" - Scale keywords: "entire", "all", "full-stack", "comprehensive" - Large refactoring: "Refactor entire...", "Redesign..."## Examples```User: "What files contain FATMAX logic?"→ Auto-triggers HaikuUser: "Implement new API endpoint /api/vo2max/export"→ Auto-triggers SonnetUser: "Design the entire data pipeline from collection to visualization"→ Auto-triggers Opus```## IntegrationWorks seamlessly with:- CLAUDE.md Model Selection Guide (lines 100-137)- Explicit override: `[Opus] your task` forces specific model- Auto routing when no model specified

Frequently asked questions

Model Router