Ask Gemini Mcp

What is Ask Gemini Mcp?

Ask Gemini Mcp is an MCP server that connects any MCP-compatible AI client (e.g., Claude Code, Claude Desktop, Cursor, Copilot) to the Google Gemini CLI. It enables AI-to-AI collaboration by letting your primary agent send prompts to Gemini, leveraging Gemini’s massive 1M+ token context window for large file and codebase analysis. This server is for developers and AI users who want a second opinion, architecture debates, or deep code review from Gemini while their main AI handles interaction and editing.

How to use Ask Gemini Mcp?

Install via npx -y ask-gemini-mcp and configure it as an MCP tool in your client’s settings. For Claude Code, run claude mcp add gemini-cli -- npx -y ask-gemini-mcp. For other clients (Claude Desktop, Cursor, Codex CLI, OpenCode, any STDIO client), add a gemini-cli entry using the same npx command in the appropriate config file. Prerequisites: Node.js v20.0.0+ and the Google Gemini CLI installed and authenticated. Then invoke tools like ask-gemini by instructing your AI to ask Gemini via the MCP.

Key features of Ask Gemini Mcp

• Exposes three tools: ask-gemini, fetch-chunk, and ping
• Supports @ file syntax for direct file analysis
• Offers sandbox mode for running code in isolated environments
• Defaults to gemini-3.1-pro-preview with automatic fallback to gemini-3-flash-preview
• Works with 40+ MCP clients via STDIO transport
• Requires no API key – uses the authenticated Gemini CLI

Use cases of Ask Gemini Mcp

• Get a second opinion on coding approach before committing
• Send architecture proposals to Gemini for critique and alternatives
• Have Gemini analyze diffs or modified files to catch missed issues
• Analyze entire codebases (1M+ tokens) that overflow other models
• Run and test code in sandboxed environments via Gemini

FAQ from Ask Gemini Mcp

What are the prerequisites for using Ask Gemini Mcp?

Node.js v20.0.0 or higher and the Google Gemini CLI must be installed and authenticated on your system.

What tools does Ask Gemini Mcp expose?

It provides ask-gemini (send prompts, supports @ file syntax, model selection, sandbox mode), fetch-chunk (retrieve subsequent chunks from large responses), and ping (test connectivity without using Gemini tokens).

Which models does Ask Gemini Mcp support?

The default model is gemini-3.1-pro-preview for best quality reasoning, with gemini-3-flash-preview as a faster option and automatic fallback when Pro quota is exceeded.

How do I configure Ask Gemini Mcp for my client?

Add a gemini-cli MCP server entry with command npx -y ask-gemini-mcp using STDIO transport. Exact config file locations are provided for Claude Desktop, Cursor, Codex CLI, OpenCode, and generic STDIO clients.

Does Ask Gemini Mcp require authentication?

Yes, authentication is handled by the Google Gemini CLI. You must have the CLI installed and authenticated (e.g., via gcloud auth or gemini auth) before using the server.