Gemini CLI Skill for Claude Code

A Claude Code skill that enables effective use of Google's Gemini CLI as a powerful auxiliary tool.

What This Skill Does

This skill teaches Claude Code how to wield Gemini CLI for:

• Code Generation - Create apps, components, and modules
• Code Review - Security audits, bug detection, improvements
• Test Generation - Unit tests, integration tests
• Documentation - JSDoc, README, API docs
• Web Research - Current information via Google Search
• Architecture Analysis - Codebase investigation and mapping

Installation

Copy the skill directory to your Claude Code skills folder:

# Clone the repo
git clone https://github.com/forayconsulting/gemini_cli_skill.git

# Copy to Claude Code skills directory
cp -r gemini_cli_skill ~/.claude/skills/gemini-cli

Or manually create ~/.claude/skills/gemini-cli/ and copy the files.

Prerequisites

• Gemini CLI installed
• Gemini API key or OAuth authentication configured

# Install Gemini CLI
npm install -g @google/gemini-cli

# Authenticate
gemini  # First run prompts for auth

Files

File	Purpose
SKILL.md	Main skill definition - when to use, core instructions
reference.md	Complete CLI command and flag reference
templates.md	Reusable prompt templates for common tasks
patterns.md	Integration patterns and workflows
tools.md	Gemini's built-in tools documentation

Usage

Once installed, Claude Code automatically uses this skill when appropriate. Just ask:

"Use Gemini to review this code for security issues"
"Have Gemini generate tests for this module"
"Ask Gemini what's new in TypeScript 5.5"
"Get Gemini to analyze this codebase architecture"

Key Features

Prompt Templates

Ready-to-use templates for:

• Code generation (single-file, multi-file, components)
• Code review (comprehensive, security, performance)
• Test generation (unit, integration)
• Documentation (JSDoc, README, API)

Integration Patterns

• Generate-Review-Fix - Quality assurance cycle
• Background Execution - Parallel task processing
• Model Selection - Pro vs Flash decision tree
• Rate Limit Handling - Strategies for free tier limits

Gemini's Unique Tools

• google_web_search - Real-time internet search
• codebase_investigator - Deep architecture analysis
• save_memory - Cross-session persistence

Quick Reference

# Basic generation
gemini "Create [description]" --yolo -o text

# Code review
gemini "Review [file] for bugs and security issues" -o text

# Web research
gemini "What's new in [topic]? Use Google Search." -o text

# Architecture analysis
gemini "Use codebase_investigator to analyze this project" -o text

# Faster model for simple tasks
gemini "[prompt]" -m gemini-2.5-flash -o text

Why Use Gemini from Claude Code?

Use Case	Benefit
Second opinion	Different AI perspective on code
Current info	Google Search grounding
Architecture	codebase_investigator tool
Parallel work	Offload tasks while continuing

License

MIT