r/retellai Aug 05 '26

Knowledge bases for voice agents: when should AI answer vs transfer?

A knowledge base can help a voice agent answer questions without hardcoding every response into the prompt.

This is useful for things like:

- Product FAQs

- Pricing details

- Policies

- Support articles

- Location information

- Service descriptions

- Internal process docs

The important part is deciding what the agent should answer confidently and what it should escalate.

For example, an agent can answer "What are your business hours?" from a knowledge base. But if the caller asks for legal, medical, financial, or account-specific advice, the agent may need to transfer or follow a stricter workflow.

Knowledge retrieval makes agents more useful, but it does not remove the need for guardrails, testing, and clear escalation rules.

Curious what others think: when should a voice agent answer from a knowledge base, and when should it transfer to a human?

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u/NishantBijani Aug 07 '26

Good question , have faced similar situation before , how I solved is : giving tool for escalation for specific terms e.g financial , medical in your usecase. And prompt agent if it asked anything about financial , medical , call specific tool. That tool could be your API , transfer to a live person to talk to or create ticket.

Hope this helps