[Release] google/adk-python v2.3.0: v2.3.0

Google ADK Python v2.3.0 introduces significant enhancements including async/concurrency guidelines, mTLS support in AgentRegistry, GCS first-party toolset integration, and improved Live API handling for Gemini 3.1 models. The release adds enterprise parameter migration, remote sandbox support via E2BEnvironment, and per-request OpenTelemetry configuration. Multiple bug fixes address event handling, authentication, schema sanitization, and dependency management across core, CLI, evaluation, and integration modules.

Key Points

• •Add async and concurrency guidelines to ADK Style Guide for better development practices
• •Implement mTLS support in AgentRegistry client and migrate McpToolset to AsyncAuthorizedSession
• •Introduce GCS first-party toolset and E2BEnvironment for remote sandbox workspaces
• •Add log_level option to adk run CLI and request timeout to load_web_page for better control
• •Migrate core and CLI to enterprise parameters with GOOGLE_GENAI_USE_ENTERPRISE env var support
• •Support Gemma4 in Gemini and handle input transcription differently for Gemini Live 3.1 models
• •Create GEPARootAgentOptimizer and add experimental Antigravity SDK agent wrapper in labs
• •Expose user_simulator_config in eval generate_responses and support Live API translation config
• •Add per-request OpenTelemetry configuration for enhanced telemetry and monitoring
• •Fix critical bugs in event handling, authentication scopes, schema sanitization, and dependency resolution

Workflow Diagram

Concepts