On March 18, 2026, Google DeepMind announced significant feature enhancements to its Gemini API, officially launching the Multi-tool Chaining and "Context Circulation" mechanisms. This upgrade aims to address the pain points of cumbersome steps and slow responses when developers call large model capabilities, allowing users to deeply integrate built-in tools such as Google Search and Google Maps along with custom functions in a single request.

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From a technical perspective, the newly introduced "Context Circulation" enables automated data transfer across tools, meaning the output of the previous tool can seamlessly serve as the input parameters for subsequent tools, significantly improving the efficiency of handling complex tasks. To optimize the development and debugging experience, the system now assigns a unique ID for each tool call, greatly enhancing the accuracy of error tracking. Additionally, Google Maps has been officially integrated with the Gemini3 series model data source, allowing developers to directly call real-time data such as geographic locations, business details, and commuting time.

Google recommends that developers use the new Interactions API