Agent skill

munger-observer

Daily wisdom review applying Charlie Munger's mental models to your work and thinking. Use when asked to review decisions, analyze thinking patterns, detect biases, apply mental models, do a "Munger review", or run the Munger Observer. Triggers on scheduled daily reviews or manual requests like "run munger observer", "review my thinking", "check for blind spots", or "apply mental models".

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Install this agent skill to your Project

npx add-skill https://github.com/jdrhyne/agent-skills/tree/main/prompts/munger-observer

SKILL.md

Munger Observer

Automated daily review applying Charlie Munger's mental models to surface blind spots and cognitive traps.

Process

1. Gather Today's Activity

  • Read today's memory file (memory/YYYY-MM-DD.md)
  • Scan session logs for today's activity
  • Extract: decisions made, tasks worked on, problems tackled, user requests

2. Apply Mental Models

Inversion

  • What could go wrong? What's the opposite of success here?
  • "Tell me where I'm going to die, so I'll never go there."

Second-Order Thinking

  • And then what? Consequences of the consequences?
  • Short-term gains creating long-term problems?

Incentive Analysis

  • What behaviors are being rewarded? Hidden incentive structures?
  • "Show me the incentive and I'll show you the outcome."

Opportunity Cost

  • What's NOT being done? Cost of this focus?
  • Best alternative foregone?

Bias Detection

  • Confirmation bias: Only seeking validating information?
  • Sunk cost fallacy: Continuing because of past investment?
  • Social proof: Doing it because others do?
  • Availability bias: Overweighting recent/vivid information?

Circle of Competence

  • Operating within known territory or outside?
  • If outside, appropriate humility/caution?

Margin of Safety

  • What's the buffer if things go wrong?
  • Cutting it too close anywhere?

3. Generate Output

If insights found: 1-2 concise Munger-style observations If nothing notable: "All clear — no cognitive landmines detected today."

Output Format

🧠 **Munger Observer** — [Date]

[Insight 1: Model applied + observation + implication]

[Insight 2 if applicable]

— "Invert, always invert." — Carl Jacobi (Munger's favorite)

Example

🧠 **Munger Observer** — January 19, 2026

**Opportunity Cost Alert:** Heavy focus on infrastructure today. The content queue is aging — are drafts decaying in value while we polish tools?

**Second-Order Check:** Speed improvement is good first-order thinking. Second-order: faster responses may raise expectations for response quality. Speed without substance is a trap.

— "Invert, always invert."

Scheduling (Optional)

Set up a cron job for daily automated review:

  • Recommended time: End of workday (e.g., 5pm local)
  • Trigger message: MUNGER_OBSERVER_RUN

Privacy Addendum

  • Analyze only the minimum required memory/session span for the requested review.
  • Exclude credentials, financial account numbers, health data, and private identifiers from outputs.
  • Do not copy or forward personal excerpts outside the current workspace/session without explicit user instruction.

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