critical-thinking

critical-thinking is a skill for Codex from TheGoat395/Codex-Skills. It costs 10 tokens per session (912 once invoked), scanned A, original, MIT.

A reasoning review skill for judging whether an important claim, argument, explanation, forecast, or recommendation is well supported.

In plain words
What is it for?
Use it when the main task is deciding how much confidence a conclusion deserves. It can audit factual claims, arguments, and explanations, and suspend judgment when the evidence cannot distinguish between options.
Why use it?
It makes the evidence, assumptions, reasoning, and strongest alternatives visible instead of accepting or rejecting a conclusion automatically.

Skill for Codex

Written for Codex: agents/openai.yaml present.

Good fit Use it when the main task is deciding how much confidence a conclusion deserves. It can audit factual claims, arguments, and explanations, and suspend judgment when the evidence cannot distinguish between options.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/thegoat395/codex-skills/critical-thinking
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.

Any agent
npx skills add TheGoat395/Codex-Skills --skill critical-thinking
Clone the repo
git clone --depth 1 https://github.com/TheGoat395/Codex-Skills

Made for: Codex.

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 critical-thinking

README.md
[![agentmods](https://agentmods.dev/badge/skills/thegoat395/codex-skills/critical-thinking/github.svg)](https://agentmods.dev/skills/thegoat395/codex-skills/critical-thinking)
Your own site
<a href="https://agentmods.dev/skills/thegoat395/codex-skills/critical-thinking"><img src="https://agentmods.dev/badge/skills/thegoat395/codex-skills/critical-thinking/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for critical-thinking

Your own site · 80×15
<a href="https://agentmods.dev/skills/thegoat395/codex-skills/critical-thinking"><img src="https://agentmods.dev/badge/skills/thegoat395/codex-skills/critical-thinking.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 10 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 912 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 5.1 $0.00010 $0.00912
Opus 5.5 $0.00004 $0.00365
Sonnet 5.5 $0.00002 $0.00182
Haiku 4.5 $0.00001 $0.00091

Measured 1mo ago against content hash 99d0c30f6f67, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

critical-thinking 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 1mo ago.

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.

skills/critical-thinking/SKILL.md · 81 lines

How it starts

The opening of the file, as written. The whole thing — 81 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Critical Thinking

Produce a defensible judgment, not reflexive agreement, reflexive skepticism, or a catalog of fallacy names. Critical thinking combines disposition, task-specific analysis, argument reconstruction, evidence evaluation, inference, explanation, and metacognitive monitoring.

Route the actual judgment

Reconstruct the exact position fairly: conclusion, evidence, assumptions, scope and rivals. Test the strongest alternative with discriminating evidence; do not invent doubt or average incompatible claims.

Bounded claim audits use the core checks directly. Formal entailment belongs to logical-thinking; missing evidence to deep-research; source conflicts to evidence-reconciliation; assertion calibration can use honesty if separately installed. Without it, use the confidence and delivery rules below; the public collection has no required dependency on that skill.

Hold the thinking disposition

For material judgments:

  • seek the most accurate answer even when it conflicts with the initial framing;
  • remain open to alternatives without manufacturing false balance;
  • work systematically enough that decisive claims and assumptions are visible;
  • distinguish confidence in the method from confidence in the conclusion;
  • suspend judgment when the evidence cannot discriminate between live alternatives;
  • revise when better evidence or a successful counterexample requires it.

This is an operating discipline, not a personality performance. Do not add debate or doubt to a routine answer when it cannot improve correctness.

Read the full file on GitHub · 81 lines

Files

What ships with it

5 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. 1mo ago Changed 99d0c30f6f67
  2. 1mo ago Changed · -47 lines · -54 tokens per session c6fe07375cc3
  3. 1mo ago First seen · 128 lines · 64 tokens per session scan A 91d88ccdd6e1

Subscribe to this mod's changes

critical-thinking is a skill published in the GitHub repository TheGoat395/Codex-Skills (132 stars, last pushed 3d ago), licensed MIT. It adds 10 tokens to every session and 912 once invoked, about $0.0000 per session on Opus 5.5. 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 2026-08-30.

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