Claude Code Plugins

Community-maintained marketplace

Feedback

Universal deep thinking methodology for any situation requiring quality reasoning. Use when solving problems, debugging, making decisions, analyzing code, planning, reviewing, or anytime you need thorough thinking instead of surface-level responses. Triggers on "think deeply", "analyze thoroughly", "reason carefully", "deep thinking", "understand completely", or any task requiring careful thought.

Install Skill

1Download skill
2Enable skills in Claude

Open claude.ai/settings/capabilities and find the "Skills" section

3Upload to Claude

Click "Upload skill" and select the downloaded ZIP file

Note: Please verify skill by going through its instructions before using it.

SKILL.md

name deep-think-150
description Universal deep thinking methodology for any situation requiring quality reasoning. Use when solving problems, debugging, making decisions, analyzing code, planning, reviewing, or anytime you need thorough thinking instead of surface-level responses. Triggers on "think deeply", "analyze thoroughly", "reason carefully", "deep thinking", "understand completely", or any task requiring careful thought.

Deep-Think 150 Protocol

Core Principle: Think deeply, reason thoroughly, understand completely. Quality thinking for any situation.

When This Skill Activates

Universal trigger: Any situation requiring quality thinking over quick responses.

Specific triggers:

  • Problem solving and debugging
  • Decision making at any scale
  • Code review and analysis
  • Planning and strategy
  • Understanding complex systems
  • Evaluating options and trade-offs
  • When user says "think deeply", "analyze", "reason carefully"

Key insight: This skill applies at ANY point in work, not just at the beginning.

The 150% Rule

  • 100% Core: Complete internal analysis to coherent conclusion
  • 50% Enhancement: Identify hidden assumptions, risks, and alternative interpretations

Execution Protocol

Step 1: IMMEDIATE PAUSE

Before any response, stop and prepare for systematic analysis.

Step 2: MODEL FORMATION

Build understanding: Goal → Context → Constraints → Dependencies

  • What is the real objective?
  • What is the full context?
  • What are the constraints?
  • What depends on this?

Step 3: ASSUMPTION AUDIT

List and test every assumption:

  • What am I assuming without proof?
  • Which assumptions are verified vs unverified?
  • What evidence supports each assumption?

Step 4: ALTERNATIVE ANALYSIS

Generate 3+ different interpretations:

  • How else could this problem be viewed?
  • What's the opposite perspective?
  • What if my initial assumption is wrong?

Step 5: RISK & FAILURE ANALYSIS

Identify potential failures:

  • What could go wrong?
  • What's the impact of wrong assumptions?
  • How can I mitigate risks?

Step 6: SYNTHESIS & VALIDATION

Combine insights into coherent model:

  • Can I explain this simply?
  • Is anything missing?
  • Does the logic hold together?

Mandatory Analysis Questions

Ask yourself before responding:

  1. "What do I actually understand about this problem?"
  2. "What am I assuming without verification?"
  3. "What could disprove my current conclusion?"
  4. "How would this look from another perspective?"
  5. "What am I missing?"
  6. "Can I explain this in simple words?"

Output Format

When using Deep-Think 150, structure response as:

🧠 **Deep-Think 150 Analysis**

**Understanding:**
[Core problem/goal identified]

**Assumptions Checked:**
- ✅ Verified: [assumption with evidence]
- ⚠️ Unverified: [assumption needing validation]

**Alternative Perspectives:**
- [Alternative 1]
- [Alternative 2]

**Risks Identified:**
- [Risk and mitigation]

**Conclusion:**
[Well-reasoned conclusion with confidence level]

Operational Rules

  1. NO SURFACE SOLUTIONS: Never respond without full internal analysis
  2. COMPLETE BEFORE PROCEEDING: Finish analysis before any action
  3. QUESTION EVERYTHING: Challenge every assumption
  4. MULTIPLE PERSPECTIVES: Consider problem from different angles
  5. SIMPLE EXPLANATION TEST: If you can't explain simply, analysis is incomplete
  6. CONTINUOUS VALIDATION: Keep validating throughout work

Examples

❌ BAD (Surface Response)

User: "Fix the login bug"
AI: "I'll add a null check to the login function."

Problem: No analysis, jumped to solution based on assumption.

✅ GOOD (Deep-Think Response)

User: "Fix the login bug"
AI: "🧠 Deep-Think 150 Analysis

Understanding: Login fails for some users. Need to identify root cause.

Assumptions Checked:
- ⚠️ Unverified: Bug is in login function (need to trace full flow)
- ⚠️ Unverified: It's a null pointer issue (no evidence yet)

Alternative Perspectives:
1. Could be authentication API timeout
2. Could be session management issue
3. Could be database connection problem

Risks: Fixing symptom without finding root cause = bug returns

Conclusion: First, I'll trace the full authentication flow and check 
error logs before proposing a fix. Let me investigate..."

Failure Modes & Recovery

Failure Detection Recovery
Premature Action Responding without analysis Stop, return to Step 1
Hidden Assumptions Unverified beliefs in reasoning Explicit assumption testing
Single Perspective Only one interpretation considered Generate 3+ alternatives
Complex Explanation Can't explain simply Simplify model, extract core

When to Use

This Skill is universal and applies to any situation requiring quality thinking:

  • At the start: Understanding new problems or requests
  • In the middle: When stuck or facing complexity
  • At decision points: Before making important choices
  • During review: Analyzing code, plans, or solutions
  • Anytime: When you need to think, not just react

Remember: Deep-Think 150 is not about slowing down — it's about thinking better. Apply the depth appropriate to the complexity. Simple questions get simple analysis; complex problems get full Deep-Think treatment.