Vapi · Schema

Chat

AIVoiceAgentsRealtimeCPaaS

Properties

Name Type Description
assistantId string This is the assistant that will be used for the chat. To use an existing assistant, use `assistantId` instead.
assistant object This is the assistant that will be used for the chat. To use an existing assistant, use `assistantId` instead.
assistantOverrides object These are the variable values that will be used to replace template variables in the assistant messages. Only variable substitution is supported in chat contexts - other assistant properties cannot be
squadId string This is the squad that will be used for the chat. To use a transient squad, use `squad` instead.
squad object This is the squad that will be used for the chat. To use an existing squad, use `squadId` instead.
name string This is the name of the chat. This is just for your own reference.
sessionId string This is the ID of the session that will be used for the chat. Mutually exclusive with previousChatId.
input object This is the input text for the chat. Can be a string or an array of chat messages.
stream boolean This is a flag that determines whether the response should be streamed. When true, the response will be sent as chunks of text.
previousChatId string This is the ID of the chat that will be used as context for the new chat. The messages from the previous chat will be used as context. Mutually exclusive with sessionId.
id string This is the unique identifier for the chat.
orgId string This is the unique identifier for the org that this chat belongs to.
messages array This is an array of messages used as context for the chat. Used to provide message history for multi-turn conversations.
output array This is the output messages generated by the system in response to the input.
createdAt string This is the ISO 8601 date-time string of when the chat was created.
updatedAt string This is the ISO 8601 date-time string of when the chat was last updated.
costs array These are the costs of individual components of the chat in USD.
cost number This is the cost of the chat in USD.
View JSON Schema on GitHub

JSON Schema

vapi-chat-schema.json Raw ↑
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/Chat",
  "title": "Chat",
  "type": "object",
  "properties": {
    "assistantId": {
      "type": "string",
      "description": "This is the assistant that will be used for the chat. To use an existing assistant, use `assistantId` instead."
    },
    "assistant": {
      "description": "This is the assistant that will be used for the chat. To use an existing assistant, use `assistantId` instead.",
      "allOf": [
        {
          "$ref": "#/components/schemas/CreateAssistantDTO"
        }
      ]
    },
    "assistantOverrides": {
      "description": "These are the variable values that will be used to replace template variables in the assistant messages.\nOnly variable substitution is supported in chat contexts - other assistant properties cannot be overridden.",
      "allOf": [
        {
          "$ref": "#/components/schemas/AssistantOverrides"
        }
      ]
    },
    "squadId": {
      "type": "string",
      "description": "This is the squad that will be used for the chat. To use a transient squad, use `squad` instead."
    },
    "squad": {
      "description": "This is the squad that will be used for the chat. To use an existing squad, use `squadId` instead.",
      "allOf": [
        {
          "$ref": "#/components/schemas/CreateSquadDTO"
        }
      ]
    },
    "name": {
      "type": "string",
      "description": "This is the name of the chat. This is just for your own reference.",
      "maxLength": 40
    },
    "sessionId": {
      "type": "string",
      "description": "This is the ID of the session that will be used for the chat.\nMutually exclusive with previousChatId."
    },
    "input": {
      "description": "This is the input text for the chat.\nCan be a string or an array of chat messages.",
      "oneOf": [
        {
          "type": "string",
          "title": "String"
        },
        {
          "type": "array",
          "items": {
            "oneOf": [
              {
                "$ref": "#/components/schemas/SystemMessage",
                "title": "SystemMessage"
              },
              {
                "$ref": "#/components/schemas/UserMessage",
                "title": "UserMessage"
              },
              {
                "$ref": "#/components/schemas/AssistantMessage",
                "title": "AssistantMessage"
              },
              {
                "$ref": "#/components/schemas/ToolMessage",
                "title": "ToolMessage"
              },
              {
                "$ref": "#/components/schemas/DeveloperMessage",
                "title": "DeveloperMessage"
              }
            ]
          },
          "title": "MessageArray"
        }
      ],
      "examples": [
        "Hello, how can you help me?",
        [
          {
            "role": "user",
            "content": "Hello, how can you help me?"
          }
        ]
      ]
    },
    "stream": {
      "type": "boolean",
      "description": "This is a flag that determines whether the response should be streamed.\nWhen true, the response will be sent as chunks of text.",
      "default": false
    },
    "previousChatId": {
      "type": "string",
      "description": "This is the ID of the chat that will be used as context for the new chat.\nThe messages from the previous chat will be used as context.\nMutually exclusive with sessionId."
    },
    "id": {
      "type": "string",
      "description": "This is the unique identifier for the chat."
    },
    "orgId": {
      "type": "string",
      "description": "This is the unique identifier for the org that this chat belongs to."
    },
    "messages": {
      "type": "array",
      "description": "This is an array of messages used as context for the chat.\nUsed to provide message history for multi-turn conversations.",
      "items": {
        "oneOf": [
          {
            "$ref": "#/components/schemas/SystemMessage",
            "title": "SystemMessage"
          },
          {
            "$ref": "#/components/schemas/UserMessage",
            "title": "UserMessage"
          },
          {
            "$ref": "#/components/schemas/AssistantMessage",
            "title": "AssistantMessage"
          },
          {
            "$ref": "#/components/schemas/ToolMessage",
            "title": "ToolMessage"
          },
          {
            "$ref": "#/components/schemas/DeveloperMessage",
            "title": "DeveloperMessage"
          }
        ]
      }
    },
    "output": {
      "type": "array",
      "description": "This is the output messages generated by the system in response to the input.",
      "items": {
        "oneOf": [
          {
            "$ref": "#/components/schemas/SystemMessage",
            "title": "SystemMessage"
          },
          {
            "$ref": "#/components/schemas/UserMessage",
            "title": "UserMessage"
          },
          {
            "$ref": "#/components/schemas/AssistantMessage",
            "title": "AssistantMessage"
          },
          {
            "$ref": "#/components/schemas/ToolMessage",
            "title": "ToolMessage"
          },
          {
            "$ref": "#/components/schemas/DeveloperMessage",
            "title": "DeveloperMessage"
          }
        ]
      }
    },
    "createdAt": {
      "format": "date-time",
      "type": "string",
      "description": "This is the ISO 8601 date-time string of when the chat was created."
    },
    "updatedAt": {
      "format": "date-time",
      "type": "string",
      "description": "This is the ISO 8601 date-time string of when the chat was last updated."
    },
    "costs": {
      "type": "array",
      "description": "These are the costs of individual components of the chat in USD.",
      "items": {
        "oneOf": [
          {
            "$ref": "#/components/schemas/ModelCost",
            "title": "ModelCost"
          },
          {
            "$ref": "#/components/schemas/ChatCost",
            "title": "ChatCost"
          }
        ]
      }
    },
    "cost": {
      "type": "number",
      "description": "This is the cost of the chat in USD."
    }
  },
  "required": [
    "id",
    "orgId",
    "createdAt",
    "updatedAt"
  ]
}