fix(tools/loader): load and register all decorated @tool functions from file path #742
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Ratish1
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zastrowm
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Apologies, but it looks like there's some conflicts; would you be able to rebase? |
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Yeah mb, I will do it right away. |
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September 3, 2025 22:48
…om file path - Collect all DecoratedFunctionTool objects when loading a .py file and return list when multiple exist - Normalize loader results and register each AgentTool separately in registry - Add normalize_loaded_tools helper and test for multiple decorated tools
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…om file path (strands-agents#742) - Collect all DecoratedFunctionTool objects when loading a .py file and return list when multiple exist - Normalize loader results and register each AgentTool separately in registry - Add normalize_loaded_tools helper and test for multiple decorated tools --------- Co-authored-by: ratish <[email protected]> Co-authored-by: Mackenzie Zastrow <[email protected]>
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Remove deprecated singular tool loading methods that were marked for removal in Strands SDK 2.0. These methods were deprecated in PR strands-agents#742 in favor of the plural variants that return lists. Removed methods: - ToolLoader.load_python_tool() - use load_python_tools() instead - ToolLoader.load_tool() - use load_tools() instead Also removed: - warnings import (no longer needed) - All tests specific to the deprecated methods The plural methods (load_python_tools and load_tools) remain and should be used instead as they properly handle files with multiple decorated tool functions. Fixes strands-agents#828
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Description
Previously, passing a file path that contained multiple
@tooldecorated functions resulted in only one tool being loaded/registered. This made file-based tool loading inconsistent with directory/module scanning (which returns all decorated tools). This PR fixes that: the file-path loader now collects all decorated function tools and returns them; the registry is updated to register each tool individually. Unit tests and linters were updated and run locally.Key Changes
DecoratedFunctionToolobjects when loading a.pyfile and return alistwhen multiple exist.AgentToolseparately in the registry.normalize_loaded_toolshelper tosrc/strands/tools/tools.py.test_load_python_tool_path_multiple_function_basedverifying multiple decorated tools are discovered when loading a file path.mark_dynamic()+register_tool()per tool.Related Issues
Closes #612
Documentation PR
N/A
Type of Change
Bug fix
Testing
How have you tested the change? Verify that the changes do not break functionality or introduce warnings in consuming repositories: agents-docs, agents-tools, agents-cli
hatch fmt --formatter→ 170 files left unchangedhatch fmt --linter→ All checks passedpre-commit run --all-files→ Format: Passed; Lint: Passed; Type linting: Passed; Unit Tests: Passedpytest -q tests/strands/tools/test_loader.py::test_load_python_tool_path_multiple_function_based→1 passed in 0.16shatch run test-integlocally.Checklist
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