Scored across 6 tools
Each tool has a distinct role: search discovers resources, resolve expands a known id, fetch downloads files, list_sources introspects coverage, operate analyzes remote tabular files without downloading, and relate compares resource ids. The adjacent file-related operations (resolve/fetch/operate) are explicitly scoped by description, so an agent can tell them apart.
Five tools are bare lowercase verbs (search, resolve, fetch, operate, relate) and one is a snake_case verb_noun (list_sources), so the pattern is not perfectly uniform. It remains predictable and readable, with no chaotic mixing of camelCase or vague synonym pileups.
Six tools is well-scoped for a read-only multi-archive research-data aggregator, and each tool covers a distinct workflow stage rather than duplicating another. The surface is neither thin nor bloated, and no obvious filler tool is present.
The set covers discovery, detailed record resolution, file download, source capability introspection, remote tabular inspection, and cross-resource relation hints, which is strong lifecycle coverage for this domain. Write/update operations are not expected for a read-only aggregation server, and remaining gaps look like minor conveniences rather than dead ends.