Philipp Schmid • 3/24/2026

Combine Built-in Tools and Function Calling in the Gemini Interactions API

This article explains how to combine built-in tools (Google Search, URL Context) with custom function declarations in a single request using the Gemini Interactions API. It provides two examples: first, a DevOps agent that searches for a CVE, reads an advisory, and files an incident automatically; second, cross-turn context circulation that preserves tool results across follow-up questions. The article includes Python code snippets and demonstrates how Gemini decides tool order and circulates context without manual orchestration.

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#Function Calling #Google Search #Gemini Interactions API