Platform WatchJune 22, 2026via The Decoder
Google makes Interactions API the default interface for Gemini models and agents
Why it matters
Google is consolidating its Gemini developer experience around a new API standard (Interactions API) that simplifies agent-building patterns. This signals a strategic shift toward agent-first development and locks future feature velocity behind this interface.
Key signals
- Interactions API now default interface for Gemini models and agents
- Replaces generateContent API
- Uses typed steps instead of role-based structures
- New agent features shipping exclusively through Interactions API
- Published June 22, 2026
The hook
Google just rewrote how developers talk to Gemini. Here's why that matters for your agent stack.
Google Deepmind has made the Interactions API the default interface for Gemini models and agents. It replaces the old generateContent API and uses a simplified schema with typed steps instead of role-based structures. New agent features will only ship through this API going forward.