This server demonstrates solid quality with well-structured tool definitions, proper JSON Schema validation, and clear naming conventions. All 6 tools are explicitly registered with descriptions and input schemas (except health, which is read-only). Descriptions are concise and action-oriented. However, parameter descriptions are sparse or missing, most input objects lack field-level documentation beyond type information. Output schemas are inferred from Zod but not explicitly documented in the tool definitions. Error handling is present but minimal (only NOT_FOUND documented for 2 tools). No tool annotations present. Missing descriptions for most input parameters is the primary quality gap.

• Add parameter descriptions to all input schemas. For createNote: describe 'title' (required, 1-20 chars, purpose), 'content' (optional, 1-1000 chars, purpose). For getNote and removeNote: describe 'uuid' (format: UUID v4, uniquely identifies a note). For searchNote: expand 'query' description with examples of what matches (title, content) and whether search is case-insensitive.
• Implement tool annotations in the MCP response. Expose readOnlyHint=true for health, notes_listNotes, notes_getNote, notes_searchNote; destructiveHint=true for notes_removeNote. This enables agents to reason about retry safety and side effects.
• Document output schemas in tool definitions. Example for notes_createNote: 'Returns a note object with uuid (string, UUID v4), title (string, 1-20), content (string, optional, 1-1000), createdAt (ISO 8601 string).'
• Add error recovery guidance to descriptions. Example for notes_getNote: 'Returns the note if found. If not found, try calling notes_searchNote() to locate the note by title or content, then retry with the correct uuid.'
• Add pagination parameters to notes_listNotes: introduce 'limit' (optional, default 20, range 1-100) and 'offset' (optional, default 0) parameters. Return { notes: [...], total: <count>, hasMore: <bool> }. Document in the description: 'Returns paginated list of all notes. Default limit is 20. Use offset to retrieve additional pages.'
• Consider adding an idempotentHint=true annotation to notes_createNote if you implement request deduplication (e.g., by tracking request IDs), making it safe for agents to retry automatically without risking duplicate notes.