Single tool 'add-note' has a clear verb-noun name and proper JSON Schema with typed parameters. However, the tool description is minimal (18 chars: 'Add a new note'), falling well below the 50-200 char baseline for LLM-optimized descriptions. Parameters 'name' and 'content' lack individual descriptions entirely, LLMs cannot infer what 'name' means (display name? unique ID? filename?) or what 'content' should contain. No output schema is documented. No error handling guidance (e.g., what if a note with that name already exists?). The tool modifies state (WRITE risk) but the description does not explicitly state this, violating the command-tool pattern. No parameter constraints (e.g., max length, format rules) are specified.

• Expand tool description to 80-150 chars: 'Add a new note with a unique name and content. Overwrites existing notes with the same name. Returns the note URI and confirmation message.'
• Add parameter descriptions: name='Unique identifier for the note (1-100 chars, alphanumeric + hyphens)' and content='Note body text (1-10000 chars, plain text or markdown)'.
• Document output schema: return object with fields {uri: string, name: string, created_at: ISO8601, message: string}.
• Add error handling: catch duplicate name scenario and return 'Note already exists. Use update-note to modify or choose a different name.'
• Consider adding optional parameters: overwrite (boolean, default false) and tags (array of strings) to increase utility without breaking existing calls.