Semgrep
vigolium/piolium
Run Semgrep static analysis scan on a codebase using parallel subagents.
Run a Codex-CLI static-analysis parity review of the current diff against the local RPython/PyPy sources, then act on it — fix the regressions and new mismatches in-session, and file the rest as…
Install Codex Review
$ npx skills add youknowone/pyre --skill codex-review -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install youknowone/pyre codex-review --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/youknowone/pyre.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/codex-review .claude/skills/codex-review && 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 "codex-review" agent skill from https://github.com/youknowone/pyre/tree/main/.claude/skills/codex-review into .claude/skills/codex-review/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codex-review", 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/youknowone/pyre/tree/main/.claude/skills/codex-reviewType 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 youknowone/pyre --skill codex-review -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install youknowone/pyre codex-review --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/youknowone/pyre.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/codex-review .agents/skills/codex-review && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "codex-review" agent skill from https://github.com/youknowone/pyre/tree/main/.claude/skills/codex-review into .agents/skills/codex-review/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codex-review", 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 youknowone/pyre --skill codex-review -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install youknowone/pyre codex-review --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/youknowone/pyre.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/codex-review .cursor/skills/codex-review && 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 "codex-review" agent skill from https://github.com/youknowone/pyre/tree/main/.claude/skills/codex-review into .cursor/skills/codex-review/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codex-review", 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/youknowone/pyre.git --path .claude/skills/codex-review--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 youknowone/pyre --skill codex-review -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install youknowone/pyre codex-review --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/youknowone/pyre.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/codex-review .gemini/skills/codex-review && 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 "codex-review" agent skill from https://github.com/youknowone/pyre/tree/main/.claude/skills/codex-review into .gemini/skills/codex-review/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codex-review", 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 youknowone/pyre codex-reviewInstalls 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 youknowone/pyre --skill codex-review -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/youknowone/pyre.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/codex-review .github/skills/codex-review && 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 "codex-review" agent skill from https://github.com/youknowone/pyre/tree/main/.claude/skills/codex-review into .github/skills/codex-review/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codex-review", 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 youknowone/pyre --skill codex-review -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install youknowone/pyre codex-review --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/youknowone/pyre.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/codex-review .opencode/skills/codex-review && 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 "codex-review" agent skill from https://github.com/youknowone/pyre/tree/main/.claude/skills/codex-review into .opencode/skills/codex-review/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codex-review", 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
codex-review- GitHub stars
- 116
- Token cost
- ~2.3k tokens
- SKILL.md length
- 1,216 words
- Files
- 1
- Skills in repo
- 6
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Run a Codex-CLI static-analysis parity review of the current diff against the local RPython/PyPy sources, then act on it — fix the regressions and new mismatches in-session, and file the rest as…
- Works in 5 steps: Run the Codex review → Parse the four sections → Fix sections 1 & 2 in-session (always) → …
- Asks to run codex review
- SKILL.md covers Step 1 — Run the Codex review, Step 2 — Parse the four sections, Step 3 — Fix sections 1 & 2… and Step 4 — Adjudicate sections 3…, plus 2 more sections
- Calls git, codex and cargo
What it does
Codex Review is an agent skill from youknowone/pyre. Run a Codex-CLI static-analysis parity review of the current diff against the local RPython/PyPy sources, then act on it — fix the regressions and new mismatches in-session, and file the rest as follow-up tasks. Invoked via /codex-review. Use this skill at the END of a work cycle, or whenever the user asks to "run codex review", "codex 리뷰 돌려줘", "리뷰 사이클 돌려줘", "parity review with codex", "check this diff against RPython with codex", or any request to have Codex audit the current changes for RPython/PyPy porting…
Its SKILL.md is about 2.3k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Security, covering Static analysis and SAST. The repository describes itself as: PyRe will be a very fast and compliant implementation of the Python language.
When your agent uses it
- Asks to run codex review
- Parity review with codex
- Check this diff against RPython with codex
- Any request to have Codex audit the current changes for RPython/PyPy porting fidelity
Example prompts
- “run codex review”
- “codex 리뷰 돌려줘”
- “parity review with codex”
- “/codex-review”
Requirements
- Python 3
Workflow steps
5 steps, taken from the step headings in SKILL.md.
- Run the Codex review
- Parse the four sections
- Fix sections 1 & 2 in-session (always)
- Adjudicate sections 3 & 4 (decide; never reflex-defer)
- Report
What it can do on your machine
Read from SKILL.md and the folder at commit 08b7c10. 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
Shell commands in SKILL.md call:
gitcodexcargopython3
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use git, which can reach the network depending on how they are called.
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
Codex Review loads about 2.3k tokens when it runs. Until then it costs about 170 tokens; SKILL.md has 1,216 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
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 1,216 words (~2,295 tokens).
“Each development cycle in this repo closes with a Codex-CLI review: Codex statically compares the working diff (git diff upstream/main) against the local RPython/PyPy sources and reports porting divergences in four sections. This skill runs that review and then acts…”
- name
- codex-review
Files
Just SKILL.md in .claude/skills/codex-review of youknowone/pyre.
Open the folder on GitHubat commit 08b7c10
Compare with similar skills
Codex Review 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 |
|---|---|---|---|---|---|---|
| Codex Review this skillyouknowone/pyre | 116 | — | ~2.3k | Automated safety check: Pass | Custom licence | |
| Semgrepvigolium/piolium | 140 | 1 repos | ~2.4k | Automated safety check: Notes | MIT | |
| C To AstNarwhal-Lab/MagicSkills | 316 | — | ~1.1k | Automated safety check: Pass | MIT | |
| Semgrep Security Scantrailofbits/skills | 7.4k | — | ~3.7k | Automated safety check: Notes | CC-BY-SA-4.0 | |
| LLM Sast ScannerSunWeb3Sec/llm-sast-scanner | 286 | — | ~6.2k | Automated safety check: Pass | None | |
| Sast SemgrepAgentSecOps/SecOpsAgentKit | 220 | 2 repos | ~2.4k | Automated safety check: Pass | Custom licence |
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- Official
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Detects languages, proposes rulesets for approval, then runs the approved Semgrep scan across a codebase and merges the output into one SARIF file.
LLM Sast Scanner
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Inspect, review or triage GitHub Code Scanning alerts, including CodeQL findings; apply verified dismissals when authorized.
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Run an independent Codex CLI parity review of the majit/pyre diff against local RPython/PyPy, verify findings, fix new regressions, and record justified follow-ups.
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Related
Categories
Questions about Codex Review
What does Codex Review do?
Run a Codex-CLI static-analysis parity review of the current diff against the local RPython/PyPy sources, then act on it — fix the regressions and new mismatches in-session, and file the rest as…. Codex Review is an agent skill from youknowone/pyre. Run a Codex-CLI static-analysis parity review of the current diff against the local RPython/PyPy sources, then act on it — fix the regressions and new mismatches in-session, and file the rest as follow-up tasks.
When should I use Codex Review?
Codex Review fits situations like: asks to run codex review; parity review with codex; check this diff against RPython with codex; any request to have Codex audit the current changes for RPython/PyPy porting fidelity.
How do I install Codex Review in Claude Code?
Run `npx skills add youknowone/pyre --skill codex-review -a claude-code`. Or copy the skill folder (.claude/skills/codex-review in youknowone/pyre) into .claude/skills/codex-review in your project. Claude Code loads it when a task matches its description.
How do I install Codex Review in Codex?
Run `npx skills add youknowone/pyre --skill codex-review -a codex`. Or copy the skill folder (.claude/skills/codex-review in youknowone/pyre) into .agents/skills/codex-review in your project. Codex loads it when a task matches its description.
Can I use Codex Review 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 youknowone/pyre --skill codex-review -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/codex-review, .gemini/skills/codex-review, .github/skills/codex-review and .opencode/skills/codex-review in your project.
What does Codex Review need to run?
Going by SKILL.md and its folder, Codex Review needs the command-line tools its instructions call (git, codex, cargo and python3). Our summary lists: Python 3.
Does Codex Review access the network?
SKILL.md contains no URLs. Its commands use git, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
Is Codex Review 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 Codex Review use?
Codex Review has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Codex Review use?
About 2.3k tokens (SKILL.md is roughly 9.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Codex Review?
Skills that share tags, products or a category with Codex Review: Semgrep (vigolium/piolium, 140 stars), C To Ast (Narwhal-Lab/MagicSkills, 316 stars), Semgrep Security Scan (trailofbits/skills, 7.4k stars) and LLM Sast Scanner (SunWeb3Sec/llm-sast-scanner, 286 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Codex Review?
youknowone (a GitHub user) maintains it in youknowone/pyre, which has 116 GitHub stars. The repository holds 6 skills in this directory. The repository was last updated on October 8, 2026.
Source: youknowone/pyre on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.