Voice Agent Handoff

Pattern for routing a live voice conversation from the primary agent to a different destination — either another specialised AI assistant inside the same Vapi account (handoff) or a human on an external phone number (transfer call).

Key points

  • Handoff tool in Vapi routes to another internal Vapi assistant with its own system prompt and toolset
  • Transfer Call tool routes to a phone number for a live human takeover
  • A single Handoff tool can define multiple destinations and let Vapi pick based on context (e.g. customer support vs. sales vs. a named person)
  • Routing decisions are driven by the tool description plus the assistant's system prompt, not by hard-coded rules
  • Recommended fallback pattern: if the agent detects frustration or an explicit request for a human, handoff instead of pushing further

Related entities

Related concepts

Source references

  • [src-007] Nate Herk cluster — Nate Herk — Voice AI agents cluster (4 videos)

– Videos referenced: y-cq_Qo4zVo

Robin Cartier perspective

This page is part of Robin Cartier's working AI knowledge graph: a practical research layer for production AI, recommendation systems, experimentation, GEO, and agentic web readiness.

The useful next step is to connect this concept back to applied product leadership and operating models.

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