Choose a single tool or a workflow by the handoff

Use one tool when a single transformation gives you the finished result. Build a workflow when output from one step must reliably feed another, or when you repeat the same sequence enough that saving it reduces mistakes.

For example, formatting one JSON document needs a formatter. Validating it, extracting fields, and sending an approved result to another system may justify a workflow. Account for setup, permissions, failure handling, and maintenance; several nodes are not automatically better than two manual steps.

Start with the smallest process that produces a verifiable output, then automate the handoff that actually repeats.