This server has critical gaps in definition quality. Tool descriptions are present but minimal (10-50 chars, well below the 194-char baseline). Parameters lack descriptions entirely, the 'message' param in add_note has no guidance on format, length, or constraints. No output schemas are documented; tools return bare strings without structure. The prompt_for_note tool is misclassified as a tool when it should be a prompt resource. Error handling is absent, no guidance on what to do if file I/O fails. No input validation, no pagination support, and no security considerations for file path handling.

• Add parameter descriptions to add_note: 'message (str): The note text to append. Max 500 characters. Plain text only; no special formatting.'
• Document output schemas as JSON objects. E.g., add_note should return {"status": "success", "note_id": "<uuid>", "timestamp": "<ISO8601>"} instead of a bare string.
• Expand tool descriptions to 100-200 chars. Include WHEN to use each tool: 'Call read_notes to retrieve all stored notes. Use add_note to append a new note. Returns notes separated by newlines.'
• Add error handling: catch file I/O exceptions and return structured errors like {"error": "File not found", "recovery": "Ensure notes.txt exists in the server directory"}.
• Rename get_notes_notesfile to get_latest_note (clearer intent) and document that it returns only the most recent note, not the file path.