Forms v2

• postJSON response
• postZip file response
• postQueue async request
• getGet status of an async request

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Forms

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JSON response

Make a request to the Forms model and receive JSON response data.

File upload options

We support requests with Content-Type application/json or multipart/form-data. Note that application/json requests are preferred as multipart/form-data requests do not support all flags and fields.

• [application/json] inputURL link to file
• [application/json] base64 base64 encoded file data
• [multipart/form-data] file upload local file from browser
  • PDF Form Example
  • JSON Response for Example

header Parameters

orgId required	string (orgId) non-empty ^[a-zA-Z0-9\-_]+$ Organization ID
authKey required	string (authKey) non-empty ^[a-zA-Z0-9\-_]+$ Authentication key
apiVersion	string (apiVersion) non-empty YYYY-MM-DD Default: 2025-07-10 API Version
version	integer (version) Default: 2 Forms model version (1 or 2)

Request Body schema:

application/jsonmultipart/form-dataapplication/json

required

Any of

inputURL required	string https?://(?:www\\.)?[a-zA-Z0-9./]+ URL for the file to extract data from: Must be a PDF, JPEG, PNG, TIFF, or TXT.
fileId	string Default: "UUID" Examples: "file1.pdf" Custom ID for document. If not present, will default to a random UUID.
metadata	object Custom JSON to be included in the returned response.
webhook	string https?://(?:www\\.)?[a-zA-Z0-9./]+ Webhook URL to send status updates and JSON response to.
webhookSendFull	boolean Default: false When set to true, send whole JSON response to webhook URL upon request completion. Set to false to only send request status.
forceBase64	boolean Default: false Setting this parameter to true converts files to Base64 format before sending them on to the model.
forceOCR	boolean Default: false Set this parameter to true if the input file is a fillable pdf.
webhookHeaders	object Request headers to include in the POST request to the webhook.
	SFTP (object) or InputOutputSFTP (object) SFTP authentication details. Required for SFTP URLs in inputURL or outputURL. Option to provide separate server authentication info for inputURL and outputURL.
staticIP	boolean Default: false Set to true for static IP for webhook and outputURL if they exist

Responses

https://api.lazarusai.com/api/forms/generic

Request samples

• Payload

Content type

application/jsonmultipart/form-dataapplication/json

Example

FormsURLRequestFormsBase64RequestFormsURLRequest

{

• "inputURL": "string",
• "fileId": "file1.pdf",
• "metadata": { },
• "webhook": "string",
• "webhookSendFull": false,
• "forceBase64": false,
• "forceOCR": false,
• "webhookHeaders": { },
• "sftp": {

  • "user": "string",
  • "password": "string",
  • "privateKey": "string",
  • "privateKeyPassphrase": "string"

  },
• "staticIP": false

}

Response samples

• 200
• 400
• 403
• 404
• 500
• 522

Content type

application/json

{

• "documentId": "string",
• "id": "string",
• "pages": 0,
• "entitiesExtracted": [

  • {

    • "boundingRegions": [

      • {

        • "pageNumber": 0,
        • "polygon": { }

        }

      ],
    • "category": "string",
    • "confidence": 0,
    • "spans": [

      • {

        • "offset": 0,
        • "length": 0

        }

      ],
    • "subCategory": "string"

    }

  ],
• "isUrgent": false,
• "keyValuePairs": [

  • {

    • "confidence": 0,
    • "key": {

      • "boundingRegions": { },
      • "content": "",
      • "spans": { }

      },
    • "value": {

      • "boundingRegions": { },
      • "content": "",
      • "spans": { }

      }

    }

  ],
• "modelType": "string",
• "ocrResults": {

  • "modelVersion": "string",
  • "readResults": [

    • {

      • "pageNumber": 0,
      • "angle": 0,
      • "height": 0,
      • "width": 0,
      • "unit": "string",
      • "words": [

        • {

          • "content": "string",
          • "polygon": [

            • 0

            ],
          • "confidence": 0,
          • "span": {

            • "offset": 0,
            • "length": 0

            }

          }

        ],
      • "selectionMarks": [

        • {

          • "polygon": [

            • 0

            ],
          • "confidence": 0,
          • "span": {

            • "offset": 0,
            • "length": 0

            },
          • "state": "unselected"

          }

        ],
      • "lines": [

        • {

          • "polygon": [

            • 0

            ],
          • "content": "string",
          • "spans": [

            • {

              • "offset": 0,
              • "length": 0

              }

            ]

          }

        ],
      • "spans": [

        • {

          • "offset": 0,
          • "length": 0

          }

        ]

      }

    ],
  • "readStyles": [

    • {

      • "confidence": 0,
      • "isHandwritten": true,
      • "spans": [

        • {

          • "offset": 0,
          • "length": 0

          }

        ]

      }

    ],
  • "version": "string"

  },
• "rawText": "string",
• "requestDateTime": "string",
• "status": "string",
• "tablesExtracted": [

  • {

    • "boundingRegions": [

      • {

        • "pageNumber": 0,
        • "polygon": { }

        }

      ],
    • "cells": [

      • {

        • "kind": "string",
        • "rowIndex": 0,
        • "columnIndex": 0,
        • "columnSpan": 0,
        • "content": "string",
        • "boundingRegions": [

          • {

            • "pageNumber": 0,
            • "polygon": { }

            }

          ],
        • "spans": [

          • {

            • "offset": 0,
            • "length": 0

            }

          ]

        }

      ],
    • "columnCount": 0,
    • "rowCount": 0,
    • "spans": [

      • {

        • "offset": 0,
        • "length": 0

        }

      ]

    }

  ],
• "metadata": { },
• "startTime": 0,
• "endTime": 0

}

Zip file response

Make a request to the Forms model and receive response data in a ZIP file.

File upload options

We only support requests with Content-Type application/json at this endpoint.

• [application/json] inputURL link to file
• [application/json] base64 base64 encoded file data

The default name for the file is an epoch timestamp if fileId field is not included in the request.

header Parameters

orgId required	string (orgId) non-empty ^[a-zA-Z0-9\-_]+$ Organization ID
authKey required	string (authKey) non-empty ^[a-zA-Z0-9\-_]+$ Authentication key
apiVersion	string (apiVersion) non-empty YYYY-MM-DD Default: 2025-07-10 API Version
version	integer (version) Default: 2 Forms model version (1 or 2)

Request Body schema:

application/jsonmultipart/form-dataapplication/json

required

Any of

inputURL required	string https?://(?:www\\.)?[a-zA-Z0-9./]+ URL for the file to extract data from: Must be a PDF, JPEG, PNG, TIFF, or TXT.
fileId	string Default: "UUID" Examples: "file1.pdf" Custom ID for document. If not present, will default to a random UUID.
forceBase64	boolean Default: false Setting this parameter to true converts files to Base64 format before sending them on to the model.
forceOCR	boolean Default: false Set this parameter to true if the input file is a fillable pdf.
metadata	object Custom JSON to be included in the returned response.
webhook	string https?://(?:www\\.)?[a-zA-Z0-9./]+ Webhook URL to send status updates and JSON response to.
webhookSendFull	boolean Default: false When set to true, send whole JSON response to webhook URL upon request completion. Set to false to only send request status.
outputURL	string https?://(?:www\\.)?[a-zA-Z0-9./]+ URL where resulting zip file should be sent. Must be open to PUT requests. Required if submitting an async request.
outputURLHeaders	object Request headers to include in the PUT request to the output URL.
statusId	string WARNING: Deprecating in favor of 'fileId'. Custom ID for document. If not present, will default to a random UUID.
webhookHeaders	object Request headers to include in the POST request to the webhook.
	SFTP (object) or InputOutputSFTP (object) SFTP authentication details. Required for SFTP URLs in inputURL or outputURL. Option to provide separate server authentication info for inputURL and outputURL.
staticIP	boolean Default: false Set to true for static IP for webhook and outputURL if they exist

Responses

https://api.lazarusai.com/api/forms/generic/zip

Request samples

• Payload

Content type

application/jsonmultipart/form-dataapplication/json

Example

FormsZipURLRequestFormsZipBase64RequestFormsZipURLRequest

{

• "inputURL": "string",
• "fileId": "file1.pdf",
• "forceBase64": false,
• "forceOCR": false,
• "metadata": { },
• "webhook": "string",
• "webhookSendFull": false,
• "outputURL": "string",
• "outputURLHeaders": { },
• "statusId": "string",
• "webhookHeaders": { },
• "sftp": {

  • "user": "string",
  • "password": "string",
  • "privateKey": "string",
  • "privateKeyPassphrase": "string"

  },
• "staticIP": false

}

Response samples

• 400
• 403
• 404
• 500
• 522

Content type

application/json

{

• "status": "FAILURE",
• "message": "Request body is missing required field(s): question"

}

Queue async request

Queue an asynchronous request to Forms model. To receive the model output, use either a webhook or an outputURL.

• webhook (Recommended): Receives a JSON response by default.
• outputURL: Receives a ZIP file. If the returnJSON parameter is set to true, a JSON file will be provided instead.

header Parameters

orgId required	string (orgId) non-empty ^[a-zA-Z0-9\-_]+$ Organization ID
authKey required	string (authKey) non-empty ^[a-zA-Z0-9\-_]+$ Authentication key
apiVersion	string (apiVersion) non-empty YYYY-MM-DD Default: 2025-07-10 API Version
version	integer (version) Default: 2 Forms model version (1 or 2)

Request Body schema: application/json

required

Any of

inputURL required	string https?://(?:www\\.)?[a-zA-Z0-9./]+ URL for the file to extract data from: Must be a PDF, JPEG, PNG, TIFF, or TXT.
webhook required	string https?://(?:www\\.)?[a-zA-Z0-9./]+ Webhook URL to send status updates and JSON response to.
fileId	string Default: "UUID" Examples: "file1.pdf" Custom ID for document. If not present, will default to a random UUID.
metadata	object Custom JSON to be included in the returned response.
statusId	string WARNING: Deprecating in favor of 'fileId'. Custom ID for document. If not present, will default to a random UUID.
outputURL	string https?://(?:www\\.)?[a-zA-Z0-9./]+ URL where resulting zip file should be sent. Must be open to PUT requests. Required if submitting an async request.
outputURLHeaders	object Request headers to include in the PUT request to the output URL.
webhookSendFull	boolean Default: false When set to true, send whole JSON response to webhook URL upon request completion. Set to false to only send request status.
forceBase64	boolean Default: false Setting this parameter to true converts files to Base64 format before sending them on to the model.
forceOCR	boolean Default: false Set this parameter to true if the input file is a fillable pdf.
bigFile	boolean Default: false Set this parameter to true if resubmitting a Base64 or inputURL string that previously resulted in an error due to file size.
	SFTP (object) or InputOutputSFTP (object) SFTP authentication details. Required for SFTP URLs in inputURL or outputURL. Option to provide separate server authentication info for inputURL and outputURL.
staticIP	boolean Default: false Set to true for static IP for webhook and outputURL if they exist

Responses

https://api.lazarusai.com/api/forms/generic/zip/async

Request samples

• Payload

Content type

application/json

Example

FormsAsyncZipURLRequestFormsAsyncZipBase64RequestFormsAsyncZipURLRequest

{

• "inputURL": "string",
• "fileId": "file1.pdf",
• "metadata": { },
• "statusId": "string",
• "outputURL": "string",
• "outputURLHeaders": { },
• "webhook": "string",
• "webhookSendFull": false,
• "forceBase64": false,
• "forceOCR": false,
• "bigFile": false,
• "sftp": {

  • "user": "string",
  • "password": "string",
  • "privateKey": "string",
  • "privateKeyPassphrase": "string"

  },
• "staticIP": false

}

Response samples

• 200
• 207
• 400
• 403
• 404
• 500
• 522

Content type

application/json

{

• "status": "string",
• "statusId": "string",
• "id": "string"

}

Get status of an async request

Get the status of an async zip request.

path Parameters

status_id required

string (status_id) Status ID

header Parameters

orgId required	string (orgId) non-empty ^[a-zA-Z0-9\-_]+$ Organization ID
authKey required	string (authKey) non-empty ^[a-zA-Z0-9\-_]+$ Authentication key

Responses

https://api.lazarusai.com/api/forms/generic/zip/async/{status_id}

Response samples

• 200
• 400
• 403
• 404

Content type

application/json

{

• "status": "string",
• "model": "string",
• "startTime": 0,
• "endTime": 0,
• "id": "string"

}