Three tools with minimal definitions. All have descriptions (10-30 chars, below the 50-200 char baseline for LLM optimization), and input schemas are present with typed parameters. However, descriptions lack context on WHEN to use each tool, WHAT they return, and any prerequisites. The create_file tool performs a destructive operation (file creation) but has no warning or confirmation pattern. No output schemas documented. Parameter descriptions are minimal (e.g., 'Name of the file to create' is adequate but generic). No error handling guidance. Naming is clear (verb_noun pattern), but overall quality is well below production baseline.

• Expand tool descriptions to 50-200 characters. Example for add: 'Add two integers and return the sum. Use this for arithmetic calculations. Returns an integer result.'
• Add output schema documentation in docstrings. Example: 'Returns: int (the sum of a and b)' for add; 'Returns: str (success message with file path)' for create_file.
• Implement path traversal validation in create_file: reject filenames containing '..', '/', or absolute paths. Use os.path.basename() to extract only the filename.
• Add error handling to create_file with try-except and actionable messages: 'File already exists. Try a different filename or use a unique timestamp.' or 'Permission denied. Check that the home directory is writable.'
• Add a confirmation pattern for create_file: accept a 'confirm' boolean parameter (default False) or implement a dry-run mode that returns the target path without writing.