PrintMCP defines a single tool (cura_slice_model) with a well-structured input schema, comprehensive parameter descriptions, and clear documentation of the slicing workflow. The tool name follows verb_noun convention and the description explains prerequisites and use case. However, output schema is not explicitly documented in the source, and error handling guidance is minimal. The tool demonstrates good parameter constraint discipline (enums, min/max bounds) and accepts human-friendly identifiers (printer names). No security issues detected, no credentials exposed as parameters.

• Document the output schema explicitly in tool description or docstring. Example: 'Returns {gcode_path: string, file_size_bytes: int, estimated_print_time_minutes: float, success: bool, error?: string}'.
• Add error handling guidance to the description: 'Raises FileNotFoundError if model_path does not exist or CuraEngine is not installed. Raises ValueError if printer definition not found or parameters out of range.'
• Clarify idempotency: 'If output_path already exists, the file is overwritten. Calling with identical inputs produces identical output (idempotent).'
• Add a 'dry_run' boolean parameter (default false) to preview slicing without writing files. Enables agents to validate parameters before committing.
• Return structured error responses with error_code and recovery_hint fields, e.g., {success: false, error_code: 'CURAENGINE_NOT_FOUND', recovery_hint: 'Install Ultimaker Cura or set PRINTMCP_CURA_DIR environment variable'}