34 tools with consistent verb-noun naming (read_, update_, create_, etc.) and complete input schemas. Descriptions present but generic, most are 20-80 chars, below the 194-char baseline for A+ tools. Parameter descriptions are minimal (5-15 chars typical). No output schemas documented. Error handling is basic (McpError for format_doc_text, but most tools lack recovery guidance). Security: OAuth token injection via _get_token() is server-side (good), but no permission gates or audit logging visible. Composition is sound, tools are single-responsibility and chainable (e.g., search_files → get_file_metadata → download_file). Major gap: no documented return types or pagination for list_files/search_files.

• Document return types for all tools. E.g., list_files should return {files: [{id, name, mimeType, createdTime}], total_count: int, next_cursor?: string}.
• Expand descriptions to 100-200 chars. Include WHEN to use (e.g., 'Use list_files to browse a folder; use search_files to find by name/type across Drive'). Add dependency hints.
• Add pagination: list_files, search_files, list_permissions, list_comments should return next_cursor and accept page_token. Cap results at 20-50 items.
• Implement confirmation for destructive ops: add a dry_run param or require a confirm_delete tool that returns a confirmation_token, then delete_range accepts that token.
• Enhance error messages with recovery paths. E.g., 'Document not found. Try search_files(query="document_name") or list_files(folder_id=...) to find it.'

Inferred effective spec: <=2025-11-25.

• Relies on Logging (deprecated) - log to stderr or use OpenTelemetry