The server defines three well-named tools (search_vault, get_note_content, browse_vault_structure) with action verbs and clear intent. All tools have descriptions and input schemas with types. However, significant gaps emerge on deeper inspection: parameter descriptions are present but often lack specificity on constraints and formats; output schemas are not formally documented; error handling provides basic recovery but lacks actionable guidance; and parameter validation rules are not explicit in descriptions. The search_vault tool is particularly complex with 14 parameters, some with undocumented dependencies (e.g., title_contains and tag accept multiple formats via JSON string parsing, but this is not stated in the parameter description). Naming is strong (verb_noun pattern), but schema completeness and parameter constraint documentation are weak, typical of a functional but not production-hardened implementation.

• Add formal output schema documentation to all three tools. Document return structure: {success: boolean, data: <typed object>, error?: string}. For search_vault, specify the structure of each result object (name, path, content, matches, etc.). For browse_vault_structure, specify directories/files array element structure.
• Clarify title_contains and tag parameter descriptions: 'Accepts string (single term) or array of strings (multiple terms). Alternatively, pass a JSON array as string, e.g., '["term1", "term2"]' if the client cannot send arrays natively.'
• Add min/max constraints to numeric parameters in descriptions: 'context_length (1 - 1000, default 100)', 'page_size (1 - 100, default 50)', 'max_matches_per_file (1 - 50, default 5)'.
• Enhance error messages with recovery hints: 'Failed to get note at path \'X\'. Check the path is correct (use browse_vault_structure to verify), or search_vault() to find notes by title or tag.'
• Document parameter dependencies in search_vault: 'title_match_mode applies only when title_contains is provided (choices: "any", "all"). Ignored if title_contains is empty.'
• Add total_count or next_cursor to search_vault response schema. Document max result limit: 'Returns up to page_size results; use pagination to retrieve additional matches. Total results may be truncated in large vaults.'
• Consider splitting search_vault into simpler variants: search_by_text(query, search_in_path, page_size, page) and search_by_metadata(title_contains, tag, modified_since, created_since, include_content) to reduce parameter complexity and improve LLM reasoning.