Scored across 18 tools
Each tool targets a distinct resource and action: document metadata, full text, file download, folder management, catalog lookup, and BibTeX export are all clearly separated. Even the similar get_* and search_* tools are disambiguated by their object and described use case.
All tools share the mendeley_ prefix and use snake_case verb-oriented names like list_documents, create_folder, and update_document. The only minor deviation is get_by_doi, which slightly breaks the verb_noun pattern, but the overall convention remains predictable.
Eighteen tools is slightly above the typical 3-15 sweet spot, but the count is justified by the breadth of the Mendeley domain: documents, folders, catalog search, annotations, export, and document content retrieval. There is little redundancy, so the set does not feel bloated.
The core library and folder lifecycles are covered well: create/get/list/update/delete documents and folders, plus add/remove documents to/from folders. Minor gaps remain, such as read-only annotation support and no way to create or modify annotations, but the main research workflows are fully usable.