Code Reviewer

Name: Code Reviewer
Author: google-gemini

Official

google-gemini·vlatest·backend·Apache-2.0

This Code Reviewer analyzes your backend code for potential bugs and style issues, boosting code quality and reducing errors.

Repository

Install on your platform

Showing Claude Code. One command installs this skill into any of the agents below.

Run this in your project

terminal

$ npx skills add google-gemini/gemini-cli --skill code-reviewer -a claude-code

Uses the open-source skills CLI and needs Node.js. Add -g to install it for your user instead of this project.

What we know about this skill

Publisher

google-gemini

Matched to the vendor's own GitHub organisation.

Install target

Live repository

Not pinned. Installing fetches whatever the repository holds at the time you run the command.

No human has reviewed this code. The checks below are a static scan of the files at one commit — nobody has run this skill or judged whether it works. A skill runs with whatever access you give your agent, so read the source before you install it.

Automated safety checks

scanned 28 Sept 2026

This skill failed 1 of 6 checks. A failure is not proof of bad intent; it means something in the code needs a human to look at it before you run it.

Declares what it does: failed
SKILL.md frontmatter is missing description.
SKILL.md exists, its frontmatter parses, and it declares a name and a description.
No undeclared network calls: passed
Makes no network calls.
Every host the skill dials — from its scripts, its config endpoints or the commands it tells the agent to run — is either well-known package and API infrastructure or declared in its own frontmatter. Links in documentation are not counted.
No obfuscated payloads: passed
No encoded or obfuscated payloads.
No base64, hex or compressed blob is decoded and then executed, and no encoded shell commands.
No credential access: passed
Reads no keys, tokens, keychains or credential files.
Neither the code nor the SKILL.md instructions read SSH keys, cloud credentials, keychains, token stores, browser cookie databases or dotfiles that hold secrets.
No pipe-to-shell installers: passed
No pipe-to-shell or download-and-run installers.
No `curl … | sh` pattern, in the code or in the instructions, that runs code fetched at run time.
Pinned to a commit: passed
Scanned google-gemini/gemini-cli at fe6350238c.
The exact upstream commit SHA that was scanned is recorded, so the result refers to specific bytes.

Commit: fe6350238c
Manifest: .gemini/skills/code-reviewer/SKILL.md
Scanned: 1 file, 62 lines

This is a static scan, not a review. It reads the skill's files; it does not run them, and it cannot tell you whether the skill is any good or whether the code does what its description says. A skill runs with whatever access you give your agent.

What each check looks for →

About this skill

What it does

The code-reviewer skill enables AI agents to analyze and provide feedback on software code. It identifies potential bugs, suggests improvements in code structure, and ensures adherence to best practices and coding standards.

When to use it

Before merging a pull request to catch issues early
To improve the quality of legacy code during refactoring
As part of an automated CI/CD pipeline for continuous feedback
When mentoring developers who are new to a project or language

Key capabilities

Detects syntax errors and logical flaws in code
Provides suggestions for improving readability and performance
Enforces coding standards and style guidelines
Highlights security vulnerabilities and potential edge cases

Example prompts

"Review this Python function for possible bugs and suggest improvements."
"Check the JavaScript code for adherence to ESLint rules."
"Analyze this C++ class for memory leaks and optimization opportunities."

Tips & gotchas

Ensure that the code being reviewed is well-documented, as the AI may struggle with poorly written or ambiguous comments.
The skill works best when provided with clear context about the project's goals and constraints.