The four tools have distinct primary purposes: ingest parses files, search returns ranked evidence, batch_search handles multiple questions in one call, and visual returns a single image or PDF page. The main potential overlap is between search and batch_search, but the batch version is clearly scoped to multi-question retrieval and bounded evidence. Overall, boundaries are clear.

All names use snake_case with a consistent paper_ prefix. Three tools use a verb (ingest, search, batch_search) while paper_visual is a noun/adjective, slightly breaking the verb_noun pattern. The deviation is minor and the prefix keeps the set predictable.

Four tools is well-scoped for a focused paper reader server. Each tool covers a distinct stage: ingestion, single search, batch search, and visual retrieval. No tool feels redundant or missing at this scale.

The surface covers the core lifecycle: parse a paper, search its evidence, batch search, and fetch visual content. Minor gaps include no tool to list or manage already-ingested papers/cache, and no explicit metadata extraction or full-text retrieval beyond search. These are workable around but prevent full lifecycle coverage.