Gemini MCP Tool

Install

npx skillfoxx add mcp/gemini-mcp-tool

claude mcp add --transport stdio gemini-cli -- npx -y gemini-mcp-tool

{
  "mcpServers": {
    "gemini-cli": {
      "command": "npx",
      "args": [
        "-y",
        "gemini-mcp-tool"
      ]
    }
  }
}

{
  "mcpServers": {
    "gemini-cli": {
      "command": "npx",
      "args": [
        "-y",
        "gemini-mcp-tool"
      ]
    }
  }
}

code --add-mcp '{"name":"gemini-cli","type":"stdio","command":"npx","args":["-y","gemini-mcp-tool"]}'

{
  "servers": {
    "gemini-cli": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "gemini-mcp-tool"
      ]
    }
  }
}

codex mcp add gemini-cli -- npx -y gemini-mcp-tool

[mcp_servers.gemini-cli]
command = "npx"
args = ["-y", "gemini-mcp-tool"]

{
  "mcpServers": {
    "gemini-cli": {
      "command": "npx",
      "args": [
        "-y",
        "gemini-mcp-tool"
      ]
    }
  }
}

{
  "mcpServers": {
    "gemini-cli": {
      "command": "npx",
      "args": [
        "-y",
        "gemini-mcp-tool"
      ]
    }
  }
}

{
  "mcpServers": {
    "gemini-cli": {
      "command": "npx",
      "args": [
        "-y",
        "gemini-mcp-tool"
      ]
    }
  }
}

{
  "mcpServers": {
    "gemini-cli": {
      "command": "npx",
      "args": [
        "-y",
        "gemini-mcp-tool"
      ]
    }
  }
}

{
  "mcp": {
    "gemini-cli": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "gemini-mcp-tool"
      ]
    }
  }
}

{
  "context_servers": {
    "gemini-cli": {
      "command": "npx",
      "args": [
        "-y",
        "gemini-mcp-tool"
      ]
    }
  }
}

{
  "mcpServers": {
    "gemini-cli": {
      "command": "npx",
      "args": [
        "-y",
        "gemini-mcp-tool"
      ]
    }
  }
}

claude mcp add gemini-cli -- npx -y gemini-mcp-tool

This is third-party code. Review the repository files before installing.

What it does

The server links a coding agent to the Gemini command line and lets it hand Gemini heavy tasks, using its large context window. Through the @ syntax a request can include files and directories for Gemini to analyze and return an explanation or summary, sparing the main agent's context. It offers a tool for asking Gemini questions, a joint brainstorm mode and a sandbox for running code safely. After Google retired free access to the Gemini CLI, the server defaults to its successor, the Antigravity CLI, while paid and enterprise tiers switch the old backend back on via an environment variable. Authentication happens in the external CLI; the server itself stores no keys.

Who it is for. For developers who work in a coding agent and want to offload analysis of large files and repositories to Gemini.

Example request

Ask gemini to analyze @src and explain how the main data flow is organized

Limitations

It needs Node.js 16 or newer and an installed Gemini CLI or Antigravity CLI, with sign-in done in the CLI itself. Google retired free access to the Gemini CLI, so the Antigravity CLI is used by default, and its backend is marked experimental with limits on models and sandbox. Google's Gemini and Antigravity services are unavailable from Russia without a VPN. This is an unofficial third-party tool and is not affiliated with Google.

How to disable. Remove the gemini-cli entry from your MCP client config. In Claude Code use claude mcp remove gemini-cli.

MCP

Transport

stdio

Authentication

not required

Security check

• Runs an external CLI as a subprocess and sends file contents to a Google service
• Can execute code in Gemini's sandbox on request

README in short

The README describes an MCP server that links an AI assistant to the Gemini command line to use its large context window for analyzing big files and codebases. Files and directories are included in a request via the @ syntax, and there are tools for questions, brainstorming and a sandbox for safe code execution. It also covers the move from the retired free Gemini CLI to the Antigravity CLI and the environment variables that control backend choice, binary path and timeout. Installation is a single npx command or an entry added to the MCP client config. The tool is unofficial and not affiliated with Google, under the MIT license.

Related