Scored across 26 tools
Most tools have clearly distinct purposes, with generic label operations (modify_labels, bulk_modify) separated from dedicated actions (archive, trash, mark_read, snooze) by scope and scope type. A few adjacent pairs like list_unsubscribe vs list_subscriptions could be confused, but the intent is largely evident from the tool names.
The set mixes list_/get_/create_/delete_/modify_/bulk_ prefixes with bare imperative verbs (archive, trash, snooze, search, unsubscribe) and a few noun phrases (triage_digest, what_changed). Within clusters the naming is predictable, but there is no single consistent convention across the whole set.
At 26 tools this is on the heavy side, and some generic tools could theoretically cover dedicated actions, but the count is justified by the breadth of Gmail functionality covered. Each tool has a real use case, so the count feels slightly over-scoped rather than bloated.
The core mailbox lifecycle is well covered: discovery, fetching, labeling, archiving, trashing, snoozing, filters, subscriptions, attachments, and bulk operations. Minor gaps exist (no permanent delete, no spam reporting, no outbound mail), but they are either intentional or workable around.