How do I install the Ultrathink skill?

Run npx skillmds@latest add wasabeef/ultrathink 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.

Is Ultrathink 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 Ultrathink?

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 Ultrathink free to use?

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

Who published Ultrathink?

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

Ultrathink by wasabeef — Agent Skill

Name: Ultrathink
Author: wasabeef

File contents

Structured thinking process for complex challenges

Execute a step-by-step, structured thinking process for complex tasks and important decisions.

Usage

# Request deep thinking from Claude
"Analyze [task] using ultrathink"

Basic Examples

# Examine architecture design
"Analyze whether to choose microservices or monolith using ultrathink"

# Analyze technology selection
"Analyze whether Rust or TypeScript is suitable for this project using ultrathink"

# Deep dive into problem solving
"Analyze the causes of poor application performance and improvement methods using ultrathink"

Collaboration with Claude

# Business decisions
"Prioritize new features using ultrathink. Consider user value, development cost, and technical risk"

# System design
"Design an authentication system using ultrathink. Consider security, scalability, and maintainability"

# Trade-off analysis
"Analyze the choice between GraphQL vs REST API using ultrathink. Based on project requirements"

# Refactoring strategy
cat src/legacy_code.js
"Develop a refactoring strategy for this legacy code using ultrathink"

Thinking Process

Problem Decomposition - Break down tasks into components
MECE Analysis - Organize without gaps or overlaps
Multiple Perspective Review - Analyze from technical, business, and user perspectives
Interactive Confirmation - Confirm with users at important decision points
Evidence-Based Proposal - Conclusions based on data and logic

Detailed Examples

# Resolve complex technical debt
"Develop a strategy to modernize a 10-year legacy system using ultrathink. Include phased migration, risks, and ROI"

# Organizational challenges
"Develop a scaling strategy for the development team using ultrathink. Assume expansion from 5 to 20 people"

# Database migration
"Analyze migrating from PostgreSQL to DynamoDB using ultrathink. Consider cost, performance, and operational aspects"

Notes

Ultrathink is ideal for tasks that require deep thinking over time. For simple questions or immediate answers, use the normal question format.

---name: ultrathinkdescription: Structured thinking process for complex challenges. Trigger with "think deeply", "analyze thoroughly", "complex problem", "consider from multiple angles".---# Structured thinking process for complex challengesExecute a step-by-step, structured thinking process for complex tasks and important decisions.## Usage```bash# Request deep thinking from Claude"Analyze [task] using ultrathink"```## Basic Examples```bash# Examine architecture design"Analyze whether to choose microservices or monolith using ultrathink"# Analyze technology selection"Analyze whether Rust or TypeScript is suitable for this project using ultrathink"# Deep dive into problem solving"Analyze the causes of poor application performance and improvement methods using ultrathink"```## Collaboration with Claude```bash# Business decisions"Prioritize new features using ultrathink. Consider user value, development cost, and technical risk"# System design"Design an authentication system using ultrathink. Consider security, scalability, and maintainability"# Trade-off analysis"Analyze the choice between GraphQL vs REST API using ultrathink. Based on project requirements"# Refactoring strategycat src/legacy_code.js"Develop a refactoring strategy for this legacy code using ultrathink"```## Thinking Process1. **Problem Decomposition** - Break down tasks into components2. **MECE Analysis** - Organize without gaps or overlaps3. **Multiple Perspective Review** - Analyze from technical, business, and user perspectives4. **Interactive Confirmation** - Confirm with users at important decision points5. **Evidence-Based Proposal** - Conclusions based on data and logic## Detailed Examples```bash# Resolve complex technical debt"Develop a strategy to modernize a 10-year legacy system using ultrathink. Include phased migration, risks, and ROI"# Organizational challenges"Develop a scaling strategy for the development team using ultrathink. Assume expansion from 5 to 20 people"# Database migration"Analyze migrating from PostgreSQL to DynamoDB using ultrathink. Consider cost, performance, and operational aspects"```## NotesUltrathink is ideal for tasks that require deep thinking over time. For simple questions or immediate answers, use the normal question format.

Frequently asked questions

Ultrathink