MCP Servers

Claude to Gemini CLI MCP

An MCP server that lets Claude query Google's Gemini CLI as a sub-agent. Get second opinions, verify information, and cross-reference answers between AI models.

README

Claude to Gemini CLI MCP

An MCP (Model Context Protocol) server that lets Claude query Google's Gemini CLI as a sub-agent. Get second opinions, verify information, and cross-reference answers between AI models.

Tools

Tool	Description
`ask_gemini`	Ask Gemini any question directly
`verify_with_gemini`	Fact-check a claim using Gemini
`gemini_second_opinion`	Get Gemini's review of a proposed solution or code
`gemini_compare`	Compare Claude's answer with Gemini's perspective

Prerequisites

Gemini CLI installed and authenticated
Node.js 18+

Setup

npm install
npm run build

Add to Claude Code

Add to your ~/.claude/settings.json:

{
  "mcpServers": {
    "gemini": {
      "command": "node",
      "args": ["/absolute/path/to/claude-to-gemini-cli-mcp/dist/index.js"]
    }
  }
}

Add to Claude Desktop

Add to your Claude Desktop config (~/Library/Application Support/Claude/claude_desktop_config.json on macOS):

{
  "mcpServers": {
    "gemini": {
      "command": "node",
      "args": ["/absolute/path/to/claude-to-gemini-cli-mcp/dist/index.js"]
    }
  }
}

Environment Variables

Variable	Default	Description
`GEMINI_CLI_PATH`	`gemini`	Path to the Gemini CLI binary
`GEMINI_TIMEOUT`	`120000`	Default timeout in ms
`GEMINI_MODEL`	(CLI default)	Default Gemini model to use

Usage Examples

Once configured, Claude can use these tools automatically:

Verify a fact: "Can you check with Gemini if this claim about quantum computing is accurate?"
Get a second opinion: "Ask Gemini to review this database schema I designed"
Cross-reference: "What does Gemini think about this approach compared to yours?"
Direct query: "Ask Gemini about the latest Google Cloud pricing"

License

MIT

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