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Ultra Think

coco-research/ultra-think

Deep, multi-dimensional analysis and problem solving. Activates systematic reasoning across technical, business, user, and system perspectives. Generates multiple solutions with trade-offs, then synthesizes into a clear recommendation.

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on the repository, not the skill itself

Install

one command, takes just this skill from the repository
npx skills add https://github.com/coco-research/coco --skill ultra-think

The instruction itself

16 sections, as written by the author

Ultra Think — Deep Analysis Mode

Deep, multi-dimensional analysis and problem solving. Activates systematic reasoning across technical, business, user, and system perspectives. Generates multiple solutions with trade-offs, then synthesizes into a clear recommendation.

Use when: facing architectural decisions, complex trade-offs, strategic technology choices, system design problems, scaling challenges, migration decisions, or any question that deserves more than a quick answer. Attach this skill when you want rigorous, first-principles thinking.


When This Skill Is Activated

Do NOT jump to a solution. Follow every step below in order. Think deeply at each stage before moving on.


Step 1: Parse the Problem

Before analyzing, make sure you understand what's actually being asked.

  • Extract the core challenge from the user's message
  • Identify all stakeholders and constraints (stated and implied)
  • Surface hidden complexities and implicit requirements
  • Question assumptions — what is the user taking for granted?
  • Name the unknowns explicitly

Step 2: Multi-Dimensional Analysis

Analyze the problem from four perspectives. Do not skip any.

Technical Perspective

  • Feasibility and constraints
  • Scalability, performance, maintainability
  • Security implications
  • Technical debt and future-proofing
  • Integration complexity

Business Perspective

  • Business value and ROI
  • Time-to-market pressure
  • Competitive advantage
  • Risk vs. reward trade-offs
  • Cost (development, operational, opportunity)

User Perspective

  • User needs and pain points
  • Usability and accessibility
  • Edge cases and failure states from the user's point of view
  • User journeys affected

System Perspective

  • System-wide impacts and ripple effects
  • Integration points and coupling
  • Dependencies (upstream and downstream)
  • Emergent behaviors and unintended interactions

Step 3: Generate Multiple Solutions

Brainstorm at least 3 distinct approaches — not variations of the same idea.

For each approach, evaluate:

  • Pros and cons
  • Implementation complexity (T-shirt size: S/M/L/XL)
  • Resource requirements (people, time, money)
  • Key risks
  • Long-term implications (what does this look like in 2 years?)

Include at least one unconventional or creative solution. Consider hybrid approaches that combine strengths of different options.


Step 4: Deep Dive on Top Candidates

For the 1–2 most promising solutions:

  • Sketch a detailed implementation plan (phases, milestones)
  • Identify pitfalls and mitigation strategies
  • Consider a phased approach or MVP path
  • Analyze second-order effects — what changes because of this change?
  • Think through failure modes — what happens when this breaks?
  • Estimate reversibility — how hard is it to undo if wrong?

Step 5: Cross-Domain Thinking

Look beyond the immediate domain for insight:

  • Are there parallels from other industries? (e.g., how did logistics solve this? Healthcare? Finance?)
  • Do design patterns from other contexts apply? (e.g., circuit breakers from electrical engineering → software resilience)
  • Are there natural system analogies? (e.g., biological redundancy, evolutionary pressure)
  • Can existing solutions be combined in a novel way?

Step 6: Challenge and Stress-Test

Play devil's advocate against every solution, including the one you favor.

  • What's the strongest argument against each option?
  • What blind spots might you have?
  • Run "what if" scenarios (what if traffic is 10x? what if the team halves? what if requirements change?)
  • Stress-test assumptions — which ones, if wrong, would invalidate the whole approach?
  • Look for unintended consequences

Step 7: Synthesize and Recommend

Combine all insights into a structured deliverable. Use this exact format:

## Problem Analysis
- **Core challenge**: [one sentence]
- **Key constraints**: [list]
- **Critical success factors**: [what must be true for any solution to work]
- **Assumptions**: [what we're taking as given]

## Solution Options

### Option 1: [Name]
- **Description**: [2-3 sentences]
- **Pros**: [list]
- **Cons**: [list]
- **Complexity**: [S/M/L/XL]
- **Risk level**: [Low/Medium/High]
- **Best when**: [conditions that make this the right choice]

### Option 2: [Name]
[Same structure]

### Option 3: [Name]
[Same structure]

## Recommendation
- **Recommended approach**: [which option and why]
- **Rationale**: [the decisive factors]
- **Implementation roadmap**: [phases with rough timelines]
- **Success metrics**: [how we'll know it's working]
- **Risk mitigation**: [top 3 risks and their mitigations]
- **Reversibility**: [how hard to undo if wrong]

## Contrarian View
- **The case against this recommendation**: [strongest counterargument]
- **What would change our mind**: [signals that we chose wrong]
- **Areas of uncertainty**: [what we don't know yet]

## Confidence Assessment
- **Overall confidence**: [High/Medium/Low] — [why]
- **What would increase confidence**: [additional research, prototyping, data needed]

Step 8: Meta-Reflection

End with a brief reflection:

  • Where is the analysis weakest?
  • What biases might be influencing the recommendation?
  • What additional expertise or data would improve the analysis?
  • What's the one thing most likely to be wrong?

Thinking Principles

Apply these mental models throughout the analysis:

| Principle | Application |

|-----------|-------------|

| First Principles | Break down to fundamental truths, don't reason by analogy alone |

| Systems Thinking | Consider interconnections, feedback loops, emergent behavior |

| Probabilistic Thinking | Work with ranges and likelihoods, not certainties |

| Inversion | Ask "what should we avoid?" not just "what should we do?" |

| Second-Order Effects | Consider the consequences of consequences |

| Reversibility | Prefer reversible decisions; be extra careful with irreversible ones |

| Occam's Razor | Among equally valid solutions, prefer the simpler one |


Output Expectations

  • Comprehensive analysis (typically 2–4 pages of insight)
  • Multiple viable solutions with honest trade-offs
  • Clear reasoning chains — show your work
  • Explicit acknowledgment of uncertainties
  • Actionable recommendation with next steps
  • At least one novel insight or non-obvious perspective

How to use it

Copy the folder

Take coco-research/ultra-think from the repository into ~/.claude/skills for personal use, or into .claude/skills inside a project.

Check the name does not clash

The agent identifies a skill by the name field in its header. Two skills with the same name cannot sit side by side — one of them will be ignored.