Claude Sonnet is the strongest general-purpose choice for designing and scripting a multi-step automated workflow, since it can reason through complex sequences, write the code or pseudocode for each step, and help you connect tools via APIs or scripts. It handles ambiguous requirements well and can iterate on the workflow logic as your needs evolve. Claude Code is worth considering if you want an agentic coding environment that can actually execute and refine scripts in your editor, while Cursor is a solid alternative if you prefer an IDE-native experience with inline AI assistance for building automation code.