Each tool maps to a clearly distinct operation: create, enumerate, keyword-search, and delete. There is no overlap between search_notes and list_notes since one is keyword-based and the other is enumerative with tag filtering, and descriptions make the boundaries explicit.

All tools follow a verb_noun snake_case pattern (add_note, list_notes, search_notes, delete_note), which is highly predictable. The only minor deviation is singular 'note' in add/delete versus plural 'notes' in list/search, but this reflects natural object plurality rather than a convention break.

Four tools is a tight, well-scoped surface for a simple notes server, with each tool earning its place. It sits at the low end of the typical 3-15 range, and the absence of any modification tool makes it feel slightly under-provisioned rather than bloated.

The surface covers create, read/list, search, and delete, but there is no update/edit tool, so an agent cannot modify an existing note's title, body, or tags without deleting and recreating it. Retrieval by id is also only implicitly available via search, leaving a notable lifecycle gap.