Server demonstrates solid fundamentals: all 7 tools have clear verb-noun names (list_*, search_*, get_*, create_*, update_*, delete_*), comprehensive descriptions (avg 180 chars), and complete JSON Schema with typed parameters. Tool annotations are present and correctly applied (READ_TOOL_ANNOTATIONS, CREATE_TOOL_ANNOTATIONS, UPDATE_TOOL_ANNOTATIONS). Output schemas are well-structured (CollectionSummary, BookmarkDetail, etc.). However, several parameter descriptions lack actionable constraints (e.g., search_bookmarks 'sort' param lists options but doesn't explain default behavior or when to use each). Error handling is present but generic, RaindropAPIError lacks recovery guidance. No dry-run/confirmation pattern for destructive delete_bookmark. Pagination is implemented but per_page default (20) lacks justification.

• Add a 'confirm_delete_bookmark' tool or a 'dry_run' parameter to delete_bookmark. Return what would be deleted without actually deleting, allowing agents to verify before committing.
• Enhance error messages with actionable recovery steps. E.g., catch 'collection not found' and return: 'Collection 999 not found. Available collections: [list]. Try list_collections() to discover valid IDs.'
• Document sort parameter behavior: add to search_bookmarks description: 'Default sort is -created (newest first) for listings, score (relevance) for searches. Use -created for recent bookmarks, score for search results, title for alphabetical.'
• Explain pagination defaults in tool descriptions: 'Results are paginated with per_page=20 (max 100) to keep context window manageable. Increase for bulk operations, decrease for faster responses.'
• Consider adding a batch_update_bookmarks tool accepting an array of {bookmark_id, updates} to reduce round-trips when agents need to tag or organize multiple bookmarks.