Google Deepmind adds multi-tool chaining and context circulation to Gemini API
Google Deepmind has expanded the Gemini API to enable multi-tool chaining, allowing developers to combine built-in tools like Google Search and Google Maps with custom functions in a single request. Results from one tool now automatically pass to the next through context circulation, eliminating the need for separate sequential handling.
Google Deepmind Upgrades Gemini API with Multi-Tool Chaining and Context Circulation
Google Deepmind has expanded the Gemini API with several developer-focused features designed to simplify complex workflows. The core upgrade enables multi-tool chaining, allowing built-in tools like Google Search and Google Maps to be combined with custom functions in a single API request.
What Changed
Previously, developers working with multiple tools had to orchestrate each step separately, requiring sequential API calls and manual result handling between steps. The new system automates this process through context circulation—results from one tool are automatically passed as input to the next tool in the chain.
Google has also introduced unique IDs for each tool call, improving debugging and error tracking capabilities. This makes it easier for developers to trace execution paths and identify which specific tool invocations caused issues in complex workflows.
Google Maps Integration
Google Maps is now available as a data source for the Gemini 3 model family. The integration provides access to location data, business information, and commute times, expanding the types of real-world information Gemini can incorporate into responses.
Implementation Path
Google recommends using the new Interactions API for building these multi-tool workflows. The company has not disclosed specific pricing changes or availability windows for these features.
What This Means
This update addresses a legitimate friction point for developers building agent-based applications. Multi-tool chaining with automatic context passing reduces boilerplate code and latency compared to sequential API calls. However, the practical impact depends on how broadly these tools are available (whether custom tools can truly integrate seamlessly with Google's built-in tools) and pricing implications for tool calls. The addition of Maps data to Gemini 3 is incremental—most competing models already support location-aware responses through various mechanisms. Developers using Gemini will likely find this useful for reducing implementation complexity, but this is a refinement rather than a fundamental capability shift.
Related Articles
OpenAI Codex launches subagents and custom agent support in general availability
OpenAI Codex subagents reached general availability after weeks of preview, enabling developers to define custom agents as TOML files and parallelize task execution. The feature mirrors Claude Code's implementation with default subagents for exploration, worker, and default operations.
Google tests prominent Temporary Chat button in Gemini app homepage
Google is testing a UI redesign for its Gemini app that moves the Temporary chat feature from a navigation drawer icon to a prominent button on the homepage. The change aims to make privacy-focused conversations more discoverable while maintaining Temporary chats' core privacy guarantee: conversations aren't stored in history, used for model training, or personalization.
Perplexity's Comet AI browser launches free iOS app after $200/month PC debut
Perplexity has released Comet, its AI-powered browser, as a free standalone app for iPhone users. Originally launched on PC at $200 per month, the iOS version joins recently-released Android and existing Windows and Mac versions. The browser combines web browsing with AI assistance for summarization, research, and task automation.
Google rolls out Personal Intelligence to all Gemini users, accessing Gmail and search history
Google has expanded Personal Intelligence, its hyper-personalized Gemini mode, from $20/month subscribers to all users. The feature integrates data from Gmail, Search history, Google Photos, and other Google services to provide contextual assistance, though it remains entirely opt-in.