This server has 2 tools with basic but incomplete definitions. Both tools have descriptions and parameter schemas, but descriptions lack depth on WHEN to use each tool and WHY. Naming is adequate (verb-noun pattern: add_note, read_notes), but parameter documentation is minimal. Critically, output schemas are not documented, LLMs cannot infer what structure add_note and read_notes return. The server defines prompts and resources but those are supplementary; the tools themselves are the core assessment. add_note has a WRITE risk that is acknowledged but not explained in the description (no mention that it modifies state, making it non-idempotent on retries). read_notes is READ_ONLY and safe, but both lack guidance on composition (e.g., when should an agent call read_notes before add_note?). Error handling is absent, no guidance on what happens if the notes file is corrupted, permissions denied, or disk full. This is a fair (C-range) server with functional tools but poor LLM-readiness.

• Document output schemas formally. For add_note, define: { type: 'object', properties: { status: { type: 'string', description: 'Confirmation message' }, timestamp?: { type: 'string', format: 'date-time' } } }. For read_notes, define: { type: 'object', properties: { notes: { type: 'string', description: 'All notes separated by newlines' }, count: { type: 'integer', description: 'Number of notes' } } }.
• Extend add_note description: 'Append a new note to the sticky note file. Call this AFTER reading notes if you need to preserve existing content. This operation is permanent and cannot be undone. Returns a confirmation message with timestamp.' Add parameter constraint: 'message (string, max 10000 chars): The note content. Cannot be empty.'
• Extend read_notes description: 'Read and return all notes from the sticky note file. Call this BEFORE add_note to check existing notes, or to summarize current state. Returns all notes as a single newline-separated string, or a default message if the file is empty.'
• Add error handling with recovery guidance. Example: 'if not os.path.exists(NOTES_FILE): raise ValueError("Notes file not accessible. Check file permissions and disk space.")', surface this as an error response with actionable next steps.
• Add parameter validation to add_note: reject empty strings, enforce max length (e.g., 10000 chars), sanitize against newline-only input. Return specific error messages: 'Message cannot be empty.' or 'Message exceeds 10000 character limit.'
• Consider adding a dry_run parameter to add_note (boolean, default false) to support confirmation patterns. Or add a delete_note(index: int) tool to enable correction if an agent makes a mistake.