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sequential-thinking

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(ePost) Use when facing a complex problem that needs step-by-step breakdown, branching analysis, or iterative reasoning

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Source SKILL.md: https://github.com/majiayu000/claude-skill-registry/blob/HEAD/skills/analysis/sequential-thinking-klara-copilot-epost-agent-kit/SKILL.md

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Sequential Thinking Skill

Purpose

Structured step-by-step analysis for complex problems.

When Active

Use for debugging, test planning, architecture decisions, root cause analysis.

Expertise

Core Patterns

Linear Decomposition

Break problem into ordered steps. Each step builds on previous.

Branching Analysis

Explore multiple paths. Evaluate each independently.

Revision Loop

After reaching conclusion, revisit assumptions. Check for gaps.

Thought Structure

  1. State the problem clearly
  2. List known facts
  3. Identify unknowns
  4. Form hypothesis
  5. Test hypothesis with evidence
  6. Revise if needed
  7. State conclusion with confidence level

When to Use

  • Debugging: Trace execution flow step by step
  • Testing: Identify all paths that need coverage
  • Architecture: Evaluate trade-offs systematically
  • Root Cause: Follow evidence chain to source
  • Design: Think through all edge cases

Patterns

Hypothesis Testing

Hypothesis: [Your guess]
Evidence for: [Supporting facts]
Evidence against: [Contradicting facts]
Conclusion: [Accept/Reject/Uncertain]

Best Practices

  • Write your thinking, don't keep it mental
  • Verify each step before moving to next
  • Challenge assumptions explicitly
  • Consider multiple root causes
  • Document your reasoning trail

Related Skills

  • debug — Systematic debugging methodology
  • problem-solving — Root cause analysis techniques
  • plan — Implementation planning and task breakdown