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 buildAdd 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
