Google's Gemini CLI now boasts extension capabilities, enabling users to seamlessly integrate their preferred tools and tailor AI-powered command lines to their needs. These extensions are stored in a public GitHub repository, giving everyone the freedom to publish extensions without the need for explicit approval from Google. The extension library is a treasure trove, offering over 50 extensions. These range from Stripe payment API integration, facilitating smooth financial transactions, to Terraform infrastructure automation, streamlining the management of cloud resources, and Chrome DevTools coding agents, enhancing web development workflows. Once extensions are installed, Gemini has the intelligence to select and utilize these tools based on user prompts or can be explicitly directed to use them through custom commands. For developers looking to create their own extensions, built-in templates are readily available. These include a gemini-extension.json manifest file that points to an MCP server, and a TOML file that allows for the addition of custom commands, making the extension creation process both straightforward and customizable.