A Claude skill that turns Claude into a rigorous reasoning and sparring partner — honest engagement, calibrated pushback, current sources, reuse before reinvention.
codex reasoning karpathy prompt-engineering anthropic ai-skills claude-code claude-code-plugin claude-code-plugins-marketplace claude-skills claude-code-skill anthropic-skills codex-plugin codex-skills ai-skill claude-cowork anthropic-compatible claude-cowork-plugin karpathy-skills
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Updated
Apr 20, 2026 - Python