Vapi · JSON Structure

Vapi Tool Structure

Type: object Properties: 12
AIVoice AIVoice AgentsConversational AITelephonyReal-TimeTranscriptionText-to-SpeechLLMAgentsMCP

FunctionTool is a JSON Structure definition published by Vapi, describing 12 properties. It conforms to the https://json-structure.org/draft/2020-12/schema meta-schema.

Properties

messages type async server variableExtractionPlan parameters id orgId createdAt updatedAt rejectionPlan function

Meta-schema: https://json-structure.org/draft/2020-12/schema

JSON Structure

Raw ↑
{
  "$schema": "https://json-structure.org/draft/2020-12/schema",
  "name": "FunctionTool",
  "type": "object",
  "properties": {
    "messages": {
      "type": "array"
    },
    "type": {
      "type": "string"
    },
    "async": {
      "type": "boolean"
    },
    "server": {
      "type": "string"
    },
    "variableExtractionPlan": {
      "type": "string"
    },
    "parameters": {
      "type": "array"
    },
    "id": {
      "type": "string"
    },
    "orgId": {
      "type": "string"
    },
    "createdAt": {
      "type": "string"
    },
    "updatedAt": {
      "type": "string"
    },
    "rejectionPlan": {
      "type": "string"
    },
    "function": {
      "type": "string"
    }
  }
}