tools-input-validation

To prevent path traversal in Python scripts, validate relative paths using dedicated functions that reject absolute paths and directory traversal sequences before passing inputs to filesystem operations.

Validating kebab-case plan IDs or skill notations involves applying specific formatting rules to the input string. You can enforce kebab-case patterns and bundle:skill formats using dedicated validators to raise errors for invalid data.

Checking enum values against an allowed list is done using an enum membership validator that compares inputs to predefined values. Both raising validators and boolean helpers are available for flexible usage.

This input validation approach supports both raising validators that throw ValueError and boolean helper functions. You can use boolean checks like is_valid_plan_id for flexible logic flow without triggering exceptions.

Relative path validation fails on directory traversal sequences because the validation logic actively blocks unauthorized filesystem access. This security measure prevents invalid data from reaching filesystem operations.