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Tools allow your assistant to take actions beyond just conversation. They enable your assistant to perform tasks like transferring calls, accessing external data, or triggering actions in your application. Tools can be either built-in default tools provided by Vapi or custom tools that you create. There are three types of tools available:
  1. Default Tools: Built-in functions provided by Vapi for common operations like call transfers and control.
  2. Custom Tools: Your own functions that can be called by the assistant to interact with your systems.
  3. Integration Tools: Pre-built integrations with platforms like Make and GoHighLevel (GHL) that let you trigger automated workflows via voice.
Tools are configured as part of your assistant’s model configuration. You can find the complete API reference here.

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Available Tools

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Integration Tools

With Make and GHL integrations, you can:
  • Import existing Make scenarios and GHL workflows directly into Vapi
  • Trigger automated workflows using voice commands
  • Connect your voice AI to hundreds of apps and services
  • Automate complex business processes through voice interaction
Common use cases include:
  • Booking appointments via voice
  • Updating CRM records during calls
  • Triggering email or SMS follow-ups
  • Processing orders and payments
  • Managing customer support tickets

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Key Features

Function Calling

Assistants can trigger functions based on conversation context

Async Support

Tools can run synchronously or asynchronously

Server Integration

Connect tools to your backend via webhooks

Error Handling

Built-in error handling and fallback options