How to Ask Gemini

You don't need to memorize commands or rigid syntax to use this tool, because Ask Gemini MCP is designed for natural language collaboration.

🗣️ Just Ask Naturally

Because Claude natively integrates with MCP tools, it knows when to route your request to Gemini. You can just speak to it normally:

• "Hey, can Gemini check if my config.js is valid?"
• "Use Gemini to explain how this auth flow works."
• "Ask Gemini to suggest 3 ways to optimize my database queries."
• "Have Gemini review my latest changes for security issues."

Mixing Tool Context Automatically

You can combine an error log you are debugging with a request to Gemini without needing to manually pass files:

"I'm getting a null pointer error in my auth handler here. Gemini, can you help me find the bug?"(Claude will automatically extract the relevant files from its context and send them to Gemini for you).

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⚙️ Under The Hood (The MCP Tools)

For advanced users or when creating automated AI agent workflows, these are the actual MCP tools that the server exposes to your client.

ask-gemini

The core tool that sends your prompts and context to the Gemini API.

Parameters:

• prompt (required): The question or analysis request. Supports the @ syntax for direct file inclusion.
• model (optional): The Gemini model to use (gemini-3.1-pro-preview or gemini-3-flash-preview). Automatically falls back to Flash if Pro quotas are exceeded.
• sandbox (optional): Set to true to run your prompt inside Gemini's isolated code execution sandbox (-s flag).
• changeMode (optional): Set to true to strongly encourage Gemini to format its output as structured code edits.

fetch-chunk

Used automatically by your AI client. When Gemini returns a response larger than a single MCP message allows, it is cached. The AI uses this tool to paginate through the rest of the response.

Parameters:

• chunkCacheKey (required): The unique ID of the cached response.
• chunkIndex (optional): Which chunk to return (1-based index).

ping

A zero-cost diagnostic tool to verify the MCP server is running correctly.

Parameters:

• message (optional): An echo message.