Get Structured Output

curl https://api.vapi.ai/structured-output/id \
     -H "Authorization: Bearer <token>" \
     -H "Content-Type: application/json"

{
  "id": "a3f47b9e-8c2d-4f1a-9b7e-2d5f3c6a7b8d",
  "orgId": "org-9f8e7d6c5b4a3",
  "createdAt": "2024-01-15T09:30:00Z",
  "updatedAt": "2024-01-15T09:30:00Z",
  "name": "Customer Feedback Extraction",
  "schema": {
    "type": "object",
    "properties": {
      "customerName": {
        "type": "string",
        "description": "Name of the customer providing feedback."
      },
      "feedbackDate": {
        "type": "string",
        "description": "Date and time when the feedback was given.",
        "format": "date-time"
      },
      "rating": {
        "type": "integer",
        "description": "Customer rating from 1 to 5."
      },
      "comments": {
        "type": "string",
        "description": "Additional comments provided by the customer."
      },
      "topics": {
        "type": "array",
        "items": {
          "type": "string"
        },
        "description": "List of key topics mentioned in the feedback."
      }
    },
    "description": "Schema defining the structure of extracted customer feedback data.",
    "required": [
      "customerName",
      "feedbackDate",
      "rating"
    ],
    "title": "CustomerFeedbackSchema"
  },
  "type": "ai",
  "regex": "\\d{3}-\\d{2}-\\d{4}",
  "model": {
    "provider": "openai",
    "model": "gpt-5.4",
    "temperature": 1.1,
    "maxTokens": 5030
  },
  "compliancePlan": {
    "forceStoreOnHipaaEnabled": false
  },
  "description": "Extracts customer feedback details including sentiment and key topics from conversation transcripts.",
  "assistantIds": [
    "assistant-12345"
  ],
  "workflowIds": [
    "workflow-67890"
  ]
}

Authentication

AuthorizationBearer

Retrieve your API Key from Dashboard.

Path parameters

idstringRequired

Response

idstring

This is the unique identifier for the structured output.

orgIdstring

This is the unique identifier for the org that this structured output belongs to.

createdAtdatetime

This is the ISO 8601 date-time string of when the structured output was created.

updatedAtdatetime

This is the ISO 8601 date-time string of when the structured output was last updated.

namestring1-40 characters

This is the name of the structured output.

schemaobject

This is the JSON Schema definition for the structured output.

Defines the structure and validation rules for the data that will be extracted. Supports all JSON Schema features including:

Objects and nested properties
Arrays and array validation
String, number, boolean, and null types
Enums and const values
Validation constraints (min/max, patterns, etc.)
Composition with allOf, anyOf, oneOf

This is the JSON Schema definition for the structured output. Defines the structure and validation rules for the data that will be extracted. Supports all JSON Schema features including: - Objects and nested properties - Arrays and array validation - String, number, boolean, and null types - Enums and const values - Validation constraints (min/max, patterns, etc.) - Composition with allOf, anyOf, oneOf

typeenum

This is the type of structured output.

‘ai’: Uses an LLM to extract structured data from the conversation (default).
‘regex’: Uses a regex pattern to extract data from the transcript without an LLM.

This is the type of structured output. - 'ai': Uses an LLM to extract structured data from the conversation (default). - 'regex': Uses a regex pattern to extract data from the transcript without an LLM.

Allowed values:

regexstring1-1000 characters

This is the regex pattern to match against the transcript.

Only used when type is ‘regex’. Supports both raw patterns (e.g. ‘\d+’) and regex literal format (e.g. ’/\d+/gi’). Uses RE2 syntax for safety.

The result depends on the schema type:

boolean: true if the pattern matches, false otherwise
string: the first match or first capture group
number/integer: the first match parsed as a number
array: all matches

This is the regex pattern to match against the transcript. Only used when type is 'regex'. Supports both raw patterns (e.g. '\d+') and regex literal format (e.g. '/\d+/gi'). Uses RE2 syntax for safety. The result depends on the schema type: - boolean: true if the pattern matches, false otherwise - string: the first match or first capture group - number/integer: the first match parsed as a number - array: all matches

modelobject

This is the model that will be used to extract the structured output.

To provide your own custom system and user prompts for structured output extraction, populate the messages array with your system and user messages. You can specify liquid templating in your system and user messages. Between the system or user messages, you must reference either ‘transcript’ or ‘messages’ with the {{}} syntax to access the conversation history. Between the system or user messages, you must reference a variation of the structured output with the {{}} syntax to access the structured output definition. i.e.: {{structuredOutput}} {{structuredOutput.name}} {{structuredOutput.description}} {{structuredOutput.schema}}

If model is not specified, GPT-4.1 will be used by default for extraction, utilizing default system and user prompts. If messages or required fields are not specified, the default system and user prompts will be used.

This is the model that will be used to extract the structured output. To provide your own custom system and user prompts for structured output extraction, populate the messages array with your system and user messages. You can specify liquid templating in your system and user messages. Between the system or user messages, you must reference either 'transcript' or 'messages' with the `{{}}` syntax to access the conversation history. Between the system or user messages, you must reference a variation of the structured output with the `{{}}` syntax to access the structured output definition. i.e.: `{{structuredOutput}}` `{{structuredOutput.name}}` `{{structuredOutput.description}}` `{{structuredOutput.schema}}` If model is not specified, GPT-4.1 will be used by default for extraction, utilizing default system and user prompts. If messages or required fields are not specified, the default system and user prompts will be used.

compliancePlanobject

Compliance configuration for this output. Only enable overrides if no sensitive data will be stored.

descriptionstring

This is the description of what the structured output extracts. Use this to provide context about what data will be extracted and how it will be used.

assistantIdslist of strings

These are the assistant IDs that this structured output is linked to. When linked to assistants, this structured output will be available for extraction during those assistant's calls.

workflowIdslist of strings

These are the workflow IDs that this structured output is linked to. When linked to workflows, this structured output will be available for extraction during those workflow's execution.

This is the model that will be used to extract the structured output.