A lot of support bots fail for the same reason. They try to do everything with one prompt.

Billing questions, outage reports, refund requests, API errors, onboarding questions. It all goes into one agent, and the prompt turns into a long list of rules, exceptions, and fallback behavior. At first it feels convenient. A few weeks later it feels fragile.

This is where multi agent systems stop being a buzzword and start being useful.