The Gemini tool acts as a Model Context Protocol (MCP) server, allowing users to leverage the power of Google's Gemini AI models directly within Claude. It offers a suite of specialized tools for various tasks, including asking general questions, performing code reviews, brainstorming ideas, generating test cases, and explaining complex concepts. With features like dual-model support for automatic fallback, configurable models, and transparency in model usage, it ensures reliable and flexible AI assistance, empowering developers and other users to enhance their workflows with advanced generative AI capabilities.