AI Voice

VAPI Transfer Call Tool — Human Handoff Configuration

VAPI AI Voice Agent Developer

Business summary
Sales & lead generation • Remove manual work and increase operational reliability
  • Eliminated repetitive manual steps across the workflow
  • Faster response time and fewer missed handoffs
  • Error handling and edge-case coverage to reduce operational risk

What I built

Configured a production-ready VAPI transfer_call_tool enabling seamless human handoff mid-call. The AI voice agent detects when a caller requests to speak to a human (by name or general request), triggers the transfer tool, and routes to the designated phone number in E.164 format. Built with a clear tool description so the AI knows exactly when to invoke the transfer. Deployed across multiple client AI agents ensuring customers can always escalate — a critical trust-building feature for AI caller deployments.

Tech stack

VAPIAI Voice AgentsCRM IntegrationGoHighLevel (GHL)API ConfigurationHuman handofftransfer_call_toolGHL