Worked on the i-am-bee/bee-agent-framework repository to enhance the robustness and maintainability of error handling within the SandboxTool component. Refactored error message formatting to leverage Python’s join syntax, improving both readability and consistency in error outputs. Introduced a dedicated unit test to verify correct error message joining, thereby strengthening test coverage and reliability. Addressed code quality by resolving linting issues, applying ruff formatting, and ensuring license headers were present across test files. Removed redundant test files to streamline the codebase and stabilize continuous integration. Focused on Python development, error handling, and unit testing to support maintainable and efficient production debugging.