WPS Editor MCP has 15 tools with complete input schemas and basic descriptions, but suffers from critical gaps in LLM-optimized naming, parameter documentation, and error handling. Tool names lack clear action verbs (e.g., 'read_docx' vs 'get_docx_content'), descriptions are minimal (avg ~25 chars, well below 50-200 char baseline), and most parameters lack descriptions entirely. No output schemas documented. No error recovery guidance. No tool annotations (readOnlyHint/destructiveHint). Security concerns: file_path parameters accept untrusted input without path traversal validation. Composition is reasonable (single responsibility per tool), but parameter naming inconsistencies (sheet_name optional in some tools, required semantics unclear) and missing validation rules force LLM guessing.

• Expand tool descriptions to 50-200 chars. Example: 'read_docx' → 'Read all paragraphs and tables from a Word document. Returns structured text and table data. Use this to extract content before editing.'
• Add per-parameter descriptions explaining format, constraints, and dependencies. Example: 'sheet_name (optional): Name of the Excel sheet to target. If omitted, uses the active sheet. Must match an existing sheet name exactly.'
• Document output schemas with typed fields. Example: read_docx returns {paragraphs: string[], tables: string[][], paragraph_count: int, table_count: int}.
• Implement path validation: reject file_path/image_path containing '..' or absolute paths outside a configured safe directory. Return 'Path traversal blocked: use relative paths within the workspace.' on violation.
• Add tool annotations: mark write_* and destructive tools with destructiveHint=true; mark read_* tools with readOnlyHint=true. This enables LLM safety reasoning.