gemini-images

gemini-plugin-cc

A marketplace of Claude Code plugins that integrate Gemini CLI — get a second opinion on code, and keep your prompt cache warm while reading images.

Plugins

Plugin	Purpose	Triggers
gemini	Slash commands for code review, ask, adversarial review, security review	/gemini:*
gemini-images	PreToolUse hook that converts image Reads into text descriptions to protect prompt cache	Automatic on Read image files

Both plugins share the same Gemini CLI OAuth credentials. Install one or both.

Prerequisites

• Claude Code installed
• Gemini CLI installed (npm install -g @google/gemini-cli)
• GEMINI_API_KEY environment variable, or authenticated via gemini OAuth

Plugin-specific extra dependencies are listed in each plugin's README.

Installation

/plugin marketplace add https://github.com/haunchen/gemini-plugin-cc
/plugin install gemini
/plugin install gemini-images

Restart Claude Code after installation.

For gemini, run /gemini:setup to verify. For gemini-images, run bash plugins/gemini-images/scripts/doctor.sh to verify.

Commands (gemini plugin)

• /gemini:setup — check CLI, version, OAuth
• /gemini:review [path] [--model <m>] — code review (default model: Pro with Flash fallback)
• /gemini:ask <question> [file] [--model <m>] — free-form technical question
• /gemini:adversarial-review [path] [--model <m>] — devil's advocate design challenge
• /gemini:security-review [path] [--model <m>] — OWASP-focused security review

Security

The gemini plugin runs Gemini CLI with a read-only admin policy (plugins/gemini/policies/readonly.toml). Only read_file and glob are allowed; every other tool (including run_shell_command, write_file, replace, web_fetch, web_search, and any mcp_* tool) is denied.

This keeps the review / ask / adversarial-review / security-review commands focused on inspection. If you need Gemini to execute shell commands or modify files, invoke the gemini CLI directly instead of going through this plugin.

Project Structure

gemini-plugin-cc/
├── .claude-plugin/
│   └── marketplace.json          # Marketplace registry
├── plugins/
│   ├── gemini/                   # Slash-command plugin
│   │   ├── .claude-plugin/plugin.json
│   │   ├── commands/
│   │   └── system-prompts/
│   └── gemini-images/            # PreToolUse hook plugin
│       ├── .claude-plugin/plugin.json
│       ├── hooks/
│       ├── system-prompts/
│       ├── scripts/doctor.sh
│       └── README.md
└── docs/
    ├── plans/                    # Design + implementation plans
    └── specs/                    # Feature specs

License

MIT