[Release] google/adk-python v1.28.1: v1.28.1

Google ADK Python v1.28.1 release introduces support for the gemini-3.1-flash-live-preview model in live mode, along with bug fixes for CLI argument handling and live tool call buffering. The update disallows arguments on the /builder endpoint and adds warnings about Web UI usage in CLI help. Tool calls in live mode are now buffered and emitted together upon turn completion for improved efficiency.

Key Points

• •Added live mode support for gemini-3.1-flash-live-preview model
• •Disallow arguments on /builder endpoint to prevent misuse
• •Added warning messages about Web UI usage in CLI help documentation
• •Implemented tool call buffering in live mode for batch emission on turn completion
• •Improved live mode efficiency by grouping tool calls together
• •Bug fixes enhance stability and user guidance in the CLI interface

Concepts