Handoffs, Agents as Tools and Fixed Sequences

Who stays in control?

With a handoff, control passes to the specialist, which continues the conversation. With agents as tools, a manager agent calls a specialist like a function, receives its result and stays in control, which suits gathering several results into one answer. With a fixed sequence (canvas edges or code), you decide the order deterministically: extract, then check, then write. Prefer fixed sequences when the order is always the same; use model-driven routing only where the choice genuinely depends on the content.

Choosing a composition style

Match the pattern to the control you need.

pattern            control after the step     good for
fixed sequence     your graph                 always-same pipelines (extract -> validate -> reply)
handoff            the specialist agent       conversations that belong to one domain
agent as tool      the calling (manager) agent combining several specialists' results

Default to deterministic

Every model-driven routing decision is a place where the flow can go wrong; use it only where content decides the path.

त्वरित जाँच: When an agent is used as a tool, who stays in control?

• The calling (manager) agent
• The specialist permanently
• The end user
• Nobody