Scored across 9 tools
The core workflow (select_schema -> run_query, with describe_object/list_objects/refresh_catalog/health as clear supporting utilities) is unambiguous, and descriptions explicitly steer clients away from answer/deep_answer. However, answer, deep_answer, and semantic_query all wrap model-driven querying and share the same read-only checks, so an agent must read carefully to pick among them, especially when the deep/semantic features are disabled by env flags.
Eight of nine names follow a predictable snake_case verb_noun or noun_verb form (run_query, select_schema, describe_object, list_objects, refresh_catalog, semantic_query). The outliers are the bare 'answer' and noun-only 'health', plus the adjective-prefixed 'deep_answer', which are readable but break the verb pattern.
Nine tools is well-scoped for a read-only schema gateway: a discovery path, a query path, three catalog/ops utilities, and two optional model-assisted modes. Each tool has a distinct role and none feels like filler.
The surface covers the full read-only lifecycle: discover objects, inspect DDL, select relevant schema, execute scoped SQL, refresh the catalog, and check health, with no writes needed by design. Minor gaps remain, such as no dedicated column/value search tool (select_schema relies on question phrasing and top_k) and no way to sample values without enabling the off-by-default deep mode.