agentmods.dev

aio-mental-models

aio-mental-models is a skill for Claude Code, Codex from aiocean/claude-plugins. It costs 62 tokens per session (3,742 once invoked), scanned A, original, MIT.

A decision and reasoning guide that selects two or three relevant mental models, applies them to a question, and combines the results into a recommendation. Mental models are structured ways to think about a problem.

In plain words
What is it for?
Use it for difficult trade-offs, unclear decisions, and questions about whether to choose one approach over another.
Why use it?
It gives ambiguous choices a repeatable analysis instead of relying only on intuition.

Skill for Claude CodeCodex

Installs and runs on its own, but its text points at files inside its plugin — anything it tells you to read at a ${CLAUDE_PLUGIN_ROOT} path is only there once the plugin is installed. Installing the plugin gets both.

Part of the aio-advisor plugin — 4 skills shipped together

not rated 4 2d ago A scan 62 tokens original MIT
View the source file aiocean/claude-plugins
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/aiocean/claude-plugins/aio-mental-models
Any agent
npx skills add aiocean/claude-plugins --skill aio-mental-models
Clone the repo
git clone --depth 1 https://github.com/aiocean/claude-plugins

Made for: Claude Code, Codex.

Or install aio-advisor, the plugin that ships this one along with the rest of its 4 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for aio-mental-models

README.md
[![agentmods](https://agentmods.dev/badge/skills/aiocean/claude-plugins/aio-mental-models.svg)](https://agentmods.dev/skills/aiocean/claude-plugins/aio-mental-models)
Your own site
<a href="https://agentmods.dev/skills/aiocean/claude-plugins/aio-mental-models"><img src="https://agentmods.dev/badge/skills/aiocean/claude-plugins/aio-mental-models.svg" alt="Measured on agentmods" height="20"></a>
Per session 62 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,742 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00062 $0.03742
Opus 5 $0.00031 $0.01871
Sonnet 5 $0.00012 $0.00748
Haiku 4.5 $0.00006 $0.00374

Measured 5d ago against content hash ff5136a491a4, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

aio-mental-models scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.

The scan reads SKILL.md. This mod also ships 3 executable files (scripts/build-embeddings.ts, scripts/list-models.sh, scripts/search-models.ts), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/aio-advisor/skills/aio-mental-models/SKILL.md · 281 lines

How it starts

The opening of the file, as written. The whole thing — 281 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Mental Models Decision Advisor

"The quality of our thinking is largely influenced by our mental models." — Shane Parrish

Workflow: How to Use This Skill

When this skill is triggered, follow these five steps. Do NOT just dump model descriptions — actively guide the user through their specific problem.

Step 1: ASK — Understand the Decision

Before selecting any models, ask the user (if not already clear):

  • What specific decision or problem are you facing?
  • What are the options you're considering?
  • What constraints or context matter (timeline, resources, stakes, reversibility)?
  • What have you already tried or considered?

If the user's message already contains enough context, proceed directly to Step 2.

Step 2: SELECT — Pick 2-3 Relevant Models

First, run semantic search with the user's problem as the query to find the most relevant models. Then cross-reference with the routing table below to ensure coverage.

npx tsx "$MM/search-models.ts" "<user's problem description>" --top 5 --json

Read the full markdown file for each top result before proceeding. Use the routing table as a secondary guide:

Context Start With
Not understanding the real problem First Principles, Map vs Territory, Circle of Competence
Making a big decision Second-Order Thinking, Inversion, Probabilistic Thinking, Opportunity Cost
Evaluating options Occam's Razor, Trade-offs, Margin of Safety
Dealing with people conflicts Hanlon's Razor, Incentives, Cooperation
System not working as expected Feedback Loops, Bottlenecks, Emergence
Starting something new Activation Energy, Leverage, Critical Mass
Growth/Scaling challenges Compounding, Diminishing Returns, Scaling
Risk assessment Margin of Safety, Fat-tailed Curves, Redundancy
Change management Inertia, Activation Energy, Equilibrium
Innovation/Disruption Creative Destruction, First Principles, Niches

Read the full file on GitHub · 281 lines

Files

What ships with it

60 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 5d ago First seen · 281 lines · 62 tokens per session scan A ff5136a491a4

Subscribe to this mod's changes

aio-mental-models is a skill published in the GitHub repository aiocean/claude-plugins (4 stars, last pushed 2d ago), licensed MIT. It adds 62 tokens to every session and 3,742 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Planningai-assistantai-codinganthropicclaudeclaude-codecli-tools
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