A builder runs a scenario you assembled in advance.
n8n, Zapier and Make are flexible, but you have to set up nodes, triggers, fields, branches and error handling. Someone has to design the scenario and maintain it whenever something changes.
An agent plans its own path to the result.
Octodus understands a task from an ordinary sentence, picks the tools and changes the order of steps as the situation requires. A clarification does not mean rebuilding a graph: you just continue the conversation.
Keep the repeatable in a workflow. Give the variable to an agent.
Rigid processes between stable APIs are easiest to keep in a workflow. Tasks that call for research, decisions and adaptation are more natural to hand to an agent.