Google Gemini CLI: Open-Source Terminal Agent With Free Gemini 3 Access and MCP Support

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Google Gemini CLI is an open-source terminal AI agent offering 60 requests/min and 1,000 requests/day free with a personal Google account, including access to Gemini 3 models with 1M token context. Built-in tools include Google Search grounding, file operations, shell commands, and web fetching, with full MCP support for custom integrations. April 2026 nightly updates added customizable keyboard shortcuts, Vim keybinding support, and faster core performance.