codex-thinkdeep

Use for deep multi-step investigation and analysis with Codex. Triggers on "codex deep analysis", "investigate with codex", "codex thorough investigation", "have codex think deeply".

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Forks 31

Install this agent skill to your Project

npx add-skill https://github.com/majiayu000/claude-skill-registry/tree/main/skills/development/codex-thinkdeep-kanlanc-claude-code-kanlanc-

SKILL.md

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]