download_book and acquire_book overlap heavily — both take request_id, candidate_id, and required_format to create persistent tasks, and both expose retry/cancel semantics, so an agent could easily misselect between fetching the raw original versus the CWA-matched/converted copy. get_download_url and get_task are related status/retrieval tools but are more clearly separated by their resource. The distinctions exist but require close reading of dense descriptions.

All six tools follow a consistent verb_noun snake_case pattern: search_books, acquire_book, download_book, upload_book, get_task, get_download_url. The convention is predictable and uniform throughout, with no style mixing.

Six tools is well-scoped for a book-acquisition and library-management server. Sub-operations (retry, cancel, resolve, collect, prepare, refresh_ticket) are folded into action parameters rather than exploding into separate tools, keeping the surface lean and each tool earning its place.

The surface covers the core lifecycle: search sources, create acquisition task, get status, retrieve download URL, download original, and upload. Some operations an agent might expect as first-class tools (delete/remove from library, update metadata, list library) are absent or only implied, but the main workflows are covered.