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### Description of Change **Problem:** The `ToolboxToolset` was relying on the legacy `toolbox-core` package. Users wanting to use the Toolbox features were forced to install the heavy `[extensions]` group, lacking a granular installation option. Additionally, `ToolboxToolset` had a validation check enforcing either `toolset_name` or `tool_names` to be present, preventing the default behavior of loading all tools (which `toolbox-adk` supports). **Solution:** * Refactored `ToolboxToolset` to delegate to `toolbox-adk`. * Added a new `toolbox` optional dependency group in `pyproject.toml`. * Users can now run `pip install google-adk[toolbox]` to install only the necessary dependencies. * Updated the `extensions` dependency group to replace `toolbox-core` with `toolbox-adk`. * This ensures existing users of `[extensions]` are not broken upon upgrade. * Removed the restrictive validation check to allow default loading of all tools. * Updated the `ImportError` message to guide users toward the new granular installation command. ### Testing Plan **Unit Tests:** - [x] I have added or updated unit tests for my change. - [x] All unit tests pass locally. **Manual End-to-End (E2E) Tests:** - Verified that the sample agent runs correctly with `toolbox-adk` locally. - Verified that `ToolboxToolset` can now be instantiated without arguments to load all tools. ### Checklist - [x] I have read the [CONTRIBUTING.md](https://github.com/google/adk-python/blob/main/CONTRIBUTING.md) document. - [x] I have performed a self-review of my own code. - [x] I have commented my code, particularly in hard-to-understand areas. - [x] I have added tests that prove my fix is effective or that my feature works. - [x] New and existing unit tests pass locally with my changes. - [x] I have manually tested my changes end-to-end. - [x] Any dependent changes have been merged and published in downstream modules. PiperOrigin-RevId: 857171811
Contributing Resources
This folder hosts resources for ADK contributors, for example, testing samples etc.
Samples
Samples folder host samples to test different features. The samples are usually minimal and simplistic to test one or a few scenarios.
Note: This is different from the google/adk-samples repo, which hosts more complex e2e samples for customers to use or modify directly.
ADK project and architecture overview
The adk_project_overview_and_architecture.md describes the ADK project overview and its technical architecture from high-level.
This is helpful for contributors to understand the project and design philosophy. It can also be fed into LLMs for vibe-coding.