The DocWriter MCP server has a focused domain (LaTeX document management) with 5 well-intentioned tools. Naming follows verb_noun convention consistently (create, update, search, compile, list). However, critical gaps exist: parameter descriptions are not visible in the provided source code, input/output schemas cannot be verified, and tool descriptions are minimal (10-50 chars observed). The 'searchAndReplace' tool name violates the single-responsibility principle by combining two distinct operations. No evidence of error guidance, output schema documentation, or pagination support despite the READ_ONLY list tool handling potentially large document collections. Schema quality cannot be verified from the registration files shown.

• Add comprehensive input/output schemas with JSON Schema. Every parameter must have a 'type', 'description', and constraint (enum, pattern, minLength, etc.). Example: { 'template': { 'type': 'string', 'enum': ['article', 'report', 'thesis'], 'description': 'Document template type, determines initial structure and preamble.' } }
• Expand tool descriptions to 100-200 chars. Include WHAT (action), WHEN (use case), and any prerequisites. Example for create_latex_document: 'Creates a new LaTeX document from a predefined template (article, report, or thesis). Use this to start a new document before adding content with update_document_block. Returns the document ID and file path.'
• Split search_and_replace into two tools: (1) search_latex (pattern, document_id, case_sensitive, regex_mode) → returns matches with line numbers and context; (2) replace_in_latex (document_id, search_pattern, replacement, dry_run) → performs replacement with optional preview. Dry-run allows agents to verify changes before committing.
• Add dry-run parameter to all write tools (create, update, search_and_replace, compile). For compile, dry-run checks LaTeX syntax without generating PDF. For create/update, return the would-be result without writing to disk.
• Implement pagination for list_latex_documents: add 'limit' (default 20, max 100) and 'offset' or 'cursor' params. Return total_count and next_cursor in response. Document in tool description: 'Lists documents in batches of 20 by default. Use limit and offset to browse large directories.'