[Release] google/adk-python v1.30.0: v1.30.0

Google ADK Python v1.30.0 introduces significant enhancements including Auth Provider support in agent registry, Parameter Manager integration, Gemma 4 model support, and live avatar capabilities. The release also promotes BigQuery tools to stable status and adds artifact service integration for A2A events. Multiple bug fixes address security vulnerabilities, credential leakage, and improve the express mode user experience.

Key Points

• •Auth Provider support added to agent registry for improved authentication management
• •Parameter Manager integration enables dynamic parameter handling in ADK workflows
• •Gemma 4 models now supported, expanding LLM model compatibility
• •Live avatar support implemented for enhanced agent interactions
• •Artifact service integration allows including artifacts in A2A events via interceptor
• •BigQuery tools promoted from experimental to stable status
• •TaskStatusUpdateEvent emitted for ADK events with actions but no output parts
• •Fixed credential leakage vulnerability in Agent Registry (security patch)
• •Path traversal validation added for user_id and session_id parameters
• •Express mode user flow improved with clearer project creation messaging

Workflow Diagram

Concepts