Google launches Interactions API: one unified, stateful endpoint for Gemini models and agents
_philschmid · x · 2026-09-30
Phil Schmid highlights that Google's new Interactions API is now available on Gemini Enterprise Agent Platform (formerly Vertex AI), using the same google-genai SDK.
- One API for models and agents: a unified endpoint to call standard Gemini models and specialized agents (e.g. Deep Research Agent, custom managed agents)
- Built-in new features: optional server-side conversation state via previousinteractionid, observable execution steps for debugging/UI, and background execution for long-running tasks
- Where new features land: all future models, multimodal capabilities, tools and agentic features will ship here; generateContent remains fully supported
Centered on the Interaction resource, which records each turn's chronological execution steps.
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