This server has 3 tools with basic functionality but significant quality gaps. Tool names are action-verb correct (search_, get_, list_), but descriptions lack sufficient detail and parameter descriptions are minimal. Input schemas are present but incomplete, parameters lack formal type constraints and validation guidance. Output schemas are entirely undocumented. Error handling is absent from the visible code. The implementation shows a functional search index and PDF parsing, but the MCP tool interface falls below production standards.

• Document the output schema for each tool in the tool description or via JSON Schema. E.g., search_docs should document: returns array of {doc_id: string, title: string, score: number, matches: array}, total: integer, has_more: boolean}.
• Add explicit error handling descriptions. E.g., search_docs: 'If no results found, returns empty array. If query is malformed, returns error with suggestion to try simpler keywords.' get_doc: 'Returns error with available doc_ids if doc_id not found.'
• Add format constraints to parameters. E.g., 'doc_id must be a string identifier from search_docs or list_docs results.' 'query is a free-form text string (1-500 chars); multi-word queries boost proximity-ranked results.'
• Set and document maximum result limits. E.g., list_docs should be paginated: add offset/limit parameters (default offset=0, limit=20, max 100) and return total_count so LLM knows if more results exist.
• Add 'readOnlyHint: true' to all three tools (if MCP SDK supports tool annotations) to signal these are safe, idempotent, and can be retried.
• Clarify tool composition: add a note like 'Pass doc_id from search_docs or list_docs results directly to get_doc() to retrieve full content.'
• Expand descriptions to 100-150 chars each. Include WHEN to use (e.g., 'Use search_docs to find docs by keyword; use get_doc to retrieve full markdown content after search; use list_docs to discover available documents.').
• Add minimum/maximum bounds to max_results parameter: e.g., 'integer, minimum 1, maximum 100, default 5, controls how many search results to return.'