jamubc/gemini-mcp-tool

claude mcp add gemini-cli -- npx -y gemini-mcp-tool
For the default backend: curl -fsSL https://antigravity.google/cli/install.sh | bash, then run `agy` once to sign in
Enterprise/paid-key users: set GEMINI_MCP_BACKEND=gemini to keep using Gemini CLI

Usage

• •Ask "use gemini to analyze @src/main.js and explain what it does" or "ask gemini to summarize @. the current directory"
• •Slash commands in Claude Code: /analyze, /sandbox, /help, /ping
• •Sandbox mode: "use gemini sandbox to create and run a Python script that processes data"

Key features

• ✓ask-gemini tool (prompt, model, sandbox params; default model gemini-2.5-pro) and sandbox-test tool (always sandboxed)
• ✓@ syntax for file/directory references; web search via natural language
• ✓Slash commands for Claude Code: /analyze, /sandbox, /help, /ping
• ✓Configurable via GEMINI_MCP_BACKEND (gemini vs agy), AGY_CLI_PATH, GEMINI_MCP_TIMEOUT (default 45 min)

Caveats

• ⚠Gemini CLI was retired on 2026-06-18 for free/Pro/Ultra tiers — the tool now defaults to Antigravity CLI (agy)
• ⚠agy backend is experimental: print mode is Gemini 3.5 Flash-only, replies come from stdout, and tool execution is not sandboxed in -p mode
• ⚠Unofficial third-party tool, not affiliated with or endorsed by Google
• ⚠Requires Node.js 16.0+