majiayu000 Codex ThinkDeep Skill
Multi-step investigation and deep reasoning with Codex (gpt-5.2) using extra-high reasoning.
When to Use
- Complex problems requiring step-by-step analysis
- Architecture decisions
- Performance deep-dives
- Security analysis
- When user asks for "deep", "thorough", or "comprehensive" Codex analysis
Reasoning Level
xhigh (always - this skill is for deep analysis)
Execution
- Understand the problem fully
- Gather all relevant files and context
- Formulate a structured prompt:
Investigate this step by step. Form hypotheses, test them, and build confidence. Question: <user's question> Context: <relevant file contents> Please: 1. Break down the problem 2. Form initial hypotheses 3. Analyze each hypothesis 4. Reach a well-reasoned conclusion - Run:
codex exec -c model_reasoning_effort="xhigh" "<prompt>" - Return the comprehensive analysis
Response Format
**Deep Analysis from Codex:**
**Problem Breakdown:**
[Step-by-step analysis]
**Hypotheses Explored:**
[Each hypothesis and findings]
**Conclusion:**
[Final recommendation with confidence level]
**Session ID:** [id]