Currently, Vapi does not support adding Knowledge Bases (KB) or Query Tools directly to workflows. This feature is only available for assistants, not within the workflow builder. As a workaround, use assistants for scenarios that require knowledge retrieval from custom data sources. If you need this feature in workflows, consider submitting a feature request to Vapi support for future updates.
Sources:
- [Vapi Knowledge Base documentation](
https://docs.vapi.ai/knowledge-base)
- [Vapi Workflows documentation](
https://docs.vapi.ai/workflows)
- [Using the Query Tool for Knowledge Bases](
https://docs.vapi.ai/knowledge-base/using-query-tool)