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Google Releases Python Agent Development Kit 2.0 with Unified CLI and Vertex AI Support

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Google has launched Python ADK 2.0 (google-adk>=2.0.0), a major upgrade to its Agent Development Kit for building AI agents, officially available at adk.dev/2.0/. The new version introduces the google.adk namespace, replacing legacy module structures, and adds a unified Context object for managing session state, user identity, and tool execution pipelines. Developers can now define agents either through Python code or declarative YAML configuration, while native DAG-based Workflow support enables multi-step, parallel agent pipelines. The release also brings a unified CLI covering local runs, a built-in developer Web UI, a FastAPI-based API server mode, and streamlined serverless deployment to Google Cloud Run. Authentication for Vertex AI is now auto-detected via environment variables, with a fallback to the Google AI Studio Gemini API key for easier setup.

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Google Releases Python Agent Development Kit 2.0 with Unified CLI and Vertex AI Support · ShortSingh