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Judge claims through evidence and alternatives. An agent skill from TheGoat395/Codex-Skills.
Install Critical Thinking
$ npx skills add TheGoat395/Codex-Skills --skill critical-thinking -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install TheGoat395/Codex-Skills critical-thinking --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/TheGoat395/Codex-Skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/critical-thinking .claude/skills/critical-thinking && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "critical-thinking" agent skill from https://github.com/TheGoat395/Codex-Skills/tree/main/skills/critical-thinking into .claude/skills/critical-thinking/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "critical-thinking", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/TheGoat395/Codex-Skills/tree/main/skills/critical-thinkingType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add TheGoat395/Codex-Skills --skill critical-thinking -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install TheGoat395/Codex-Skills critical-thinking --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/TheGoat395/Codex-Skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/critical-thinking .agents/skills/critical-thinking && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "critical-thinking" agent skill from https://github.com/TheGoat395/Codex-Skills/tree/main/skills/critical-thinking into .agents/skills/critical-thinking/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "critical-thinking", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add TheGoat395/Codex-Skills --skill critical-thinking -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install TheGoat395/Codex-Skills critical-thinking --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/TheGoat395/Codex-Skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/critical-thinking .cursor/skills/critical-thinking && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "critical-thinking" agent skill from https://github.com/TheGoat395/Codex-Skills/tree/main/skills/critical-thinking into .cursor/skills/critical-thinking/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "critical-thinking", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/TheGoat395/Codex-Skills.git --path skills/critical-thinking--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add TheGoat395/Codex-Skills --skill critical-thinking -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install TheGoat395/Codex-Skills critical-thinking --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/TheGoat395/Codex-Skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/critical-thinking .gemini/skills/critical-thinking && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "critical-thinking" agent skill from https://github.com/TheGoat395/Codex-Skills/tree/main/skills/critical-thinking into .gemini/skills/critical-thinking/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "critical-thinking", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install TheGoat395/Codex-Skills critical-thinkingInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add TheGoat395/Codex-Skills --skill critical-thinking -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/TheGoat395/Codex-Skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/critical-thinking .github/skills/critical-thinking && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "critical-thinking" agent skill from https://github.com/TheGoat395/Codex-Skills/tree/main/skills/critical-thinking into .github/skills/critical-thinking/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "critical-thinking", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add TheGoat395/Codex-Skills --skill critical-thinking -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install TheGoat395/Codex-Skills critical-thinking --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/TheGoat395/Codex-Skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/critical-thinking .opencode/skills/critical-thinking && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "critical-thinking" agent skill from https://github.com/TheGoat395/Codex-Skills/tree/main/skills/critical-thinking into .opencode/skills/critical-thinking/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "critical-thinking", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
critical-thinking- GitHub stars
- 126
- Token cost
- ~1.3k tokens
- SKILL.md length
- 617 words
- Files
- 6 (incl. references)
- Skills in repo
- 23
- Repo updated
- First seen
- Licence
- MIT
At a glance
Judge claims through evidence and alternatives. An agent skill from TheGoat395/Codex-Skills.
- Frontend & Design work in your project
- SKILL.md covers Route the actual judgment, Hold the thinking disposition, Classify the reasoning task and Evaluate evidence at the claim…, plus 2 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Critical Thinking is an agent skill from TheGoat395/Codex-Skills. Judge claims through evidence and alternatives.
Its SKILL.md is about 1.3k tokens, which your agent loads only when the skill is triggered. The skill folder holds 7 other files, including reference files (for example `agents/openai.yaml`, `references/argument-evidence-mapping.md` and `references/argument-review-protocol.md`).
It sits in Frontend & Design. The repository describes itself as: Codex-first Agent Skills library for premium frontend, website, motion, accessibility, QA, and handoff workflows. The licence is MIT.
When your agent uses it
- Frontend & Design work in your project
Example prompts
- “/critical-thinking”
What it can do on your machine
Read from SKILL.md and the folder at commit feff772. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Critical Thinking loads about 1.3k tokens when it runs, and up to ~4.6k if it reads all its reference files. Until then it costs about 16 tokens; SKILL.md has 617 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from TheGoat395/Codex-Skills at commit feff772, republished under its MIT licence (© TheGoat395). 617 words, ~1,258 tokens.
Download SKILL.mdSave it as
.claude/skills/critical-thinking/SKILL.md (or your agent's skills folder). This skill also uses 5 other files; get the full folder from GitHub.- name
- critical-thinking
- description
- Judge claims through evidence and alternatives.
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.
- Argument, explanation, causal, forecast, normative, decision or source audit with material reasoning: read argument review protocol; consequential or multi-branch arguments also need argument and evidence mapping.
- Consequential judgment or live competing explanations: read challenge protocol; consequential work also needs verification and confidence. Correlated self-review is not proof.
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.
Classify the reasoning task
Identify the central task before choosing checks:
- Claim audit: Is a factual statement supported?
- Argument audit: Do the reasons support the conclusion?
- Explanation audit: Which account best explains the observations?
- Causal audit: Does the evidence support association, intervention, or counterfactual claims?
- Forecast audit: What outcome is most probable, under which conditions?
- Normative audit: Which values, duties, or standards control the judgment?
- Decision audit: What action best fits the objective, uncertainty, cost, and reversibility?
- Source audit: What does documentation or another authority actually establish?
Select and adapt only the reasoning modules that fit the task. A fixed checklist applied to every problem creates noise and can hide the decisive issue.
Show full SKILL.md (255 more words)Show less
Evaluate evidence at the claim level
For each decisive claim, determine:
- what observation would support or weaken it;
- whether the inspected evidence addresses that exact observation;
- source authority, directness, independence, currency, method, scope, and incentives;
- whether missing evidence is expected and diagnostic or merely unavailable;
- whether the evidence supports the conclusion itself, a premise, or only plausibility;
- what stronger evidence could realistically be obtained.
Quality and diagnostic value matter more than source count. Several retellings of one origin are one evidentiary line. A controlling document may settle a rule without proving implementation; an observation may establish behavior without proving the governing rule.
Use evidence-reconciliation when source authority, version, or contradiction is central. Use deep-research when decisive evidence has not yet been gathered.
Calibrate and stop
Choose a judgment state that matches the evidence:
- Established within scope
- Well supported
- Plausible but not discriminated
- Unresolved
- Weakly supported
- Contradicted
- Not assessable from available evidence
State the scope and decisive reason. Numeric confidence is optional and must be tied to assumptions or calibration evidence, not decorative precision.
Stop when the conclusion survives the strongest material countercase, decisive claims have appropriate evidence, remaining uncertainty is visible, and further work is unlikely to change the judgment enough to justify its cost.
Deliver
Lead with the judgment. For consequential work, report the decisive support, weakest material assumption, strongest alternative, verification performed, confidence state, and what would change the result. Show the argument map or evidence table when it improves inspection, but do not dump private scratch reasoning or manufacture a long debate.
© TheGoat395, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 5 other files (references) in skills/critical-thinking of TheGoat395/Codex-Skills.
- SKILL.md
- agents/openai.yaml
- references/argument-evidence-mapping.md
- references/argument-review-protocol.md
- references/challenge-protocol.md
- references/verification-confidence.md
Open the folder on GitHubat commit feff772
Compare with similar skills
Critical Thinking next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Critical Thinking this skillTheGoat395/Codex-Skills | 126 | — | ~1.3k | Automated safety check: Pass | MIT | |
| Web Artifacts Builderanthropics/skills | 180k | 40 repos | ~769 | Automated safety check: Pass | Apache-2.0 | |
| React Doctormakeplane/plane | 61k | 12 repos | ~657 | Automated safety check: Pass | AGPL-3.0 | |
| Impeccablebestofjs/bestofjs | 3.1k | 26 repos | ~2.6k | Automated safety check: Pass | MIT | |
| Figma Design System Builderwarpdotdev/warp | 65k | 2 repos | ~4.4k | Automated safety check: Pass | AGPL-3.0 | |
| Web Interface Guidelines Reviewervercel-labs/openreview | 1.7k | 97 repos | ~308 | Automated safety check: Pass | None |
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Categories
Questions about Critical Thinking
What does Critical Thinking do?
Judge claims through evidence and alternatives. An agent skill from TheGoat395/Codex-Skills. Critical Thinking is an agent skill from TheGoat395/Codex-Skills. Judge claims through evidence and alternatives.
When should I use Critical Thinking?
Critical Thinking fits situations like: frontend & Design work in your project.
How do I install Critical Thinking in Claude Code?
Run `npx skills add TheGoat395/Codex-Skills --skill critical-thinking -a claude-code`. Or copy the skill folder (skills/critical-thinking in TheGoat395/Codex-Skills) into .claude/skills/critical-thinking in your project. Claude Code loads it when a task matches its description.
How do I install Critical Thinking in Codex?
Run `npx skills add TheGoat395/Codex-Skills --skill critical-thinking -a codex`. Or copy the skill folder (skills/critical-thinking in TheGoat395/Codex-Skills) into .agents/skills/critical-thinking in your project. Codex loads it when a task matches its description.
Can I use Critical Thinking in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add TheGoat395/Codex-Skills --skill critical-thinking -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/critical-thinking, .gemini/skills/critical-thinking, .github/skills/critical-thinking and .opencode/skills/critical-thinking in your project.
What does Critical Thinking need to run?
SKILL.md names no scripts, command-line tools or credentials: Critical Thinking is instructions for the agent only.
Does Critical Thinking access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Critical Thinking safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Critical Thinking use?
Critical Thinking is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Critical Thinking use?
About 1.3k tokens (SKILL.md is roughly 5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 3.3k tokens, read only when the agent opens those files.
What are the alternatives to Critical Thinking?
Skills that share tags, products or a category with Critical Thinking: Web Artifacts Builder (anthropics/skills, 180k stars), React Doctor (makeplane/plane, 61k stars), Impeccable (bestofjs/bestofjs, 3.1k stars) and Figma Design System Builder (warpdotdev/warp, 65k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Critical Thinking?
TheGoat395 (a GitHub user) maintains it in TheGoat395/Codex-Skills, which has 126 GitHub stars. The repository holds 23 skills in this directory. The repository was last updated on September 11, 2026.
Source: TheGoat395/Codex-Skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.