Create Classifier Version | Extend Documentation

from extend_ai import Extend, ReleaseType
client = Extend(
    token="YOUR_TOKEN_HERE",
    extend_api_version="2026-02-09",
)
client.classifier_versions.create(
    classifier_id="classifier_id_here",
    release_type=ReleaseType.MINOR,
    description="Added new document classification type",
)

{
  "object": "classifier_version",
  "id": "clv_xK9mLPqRtN3vS8wF5hB2cQ",
  "description": "Added new document types for Q4 processing",
  "version": "draft",
  "config": {
    "classifications": [
      {
        "id": "my_unique_id",
        "type": "invoice",
        "description": "An invoice is a document that lists the items purchased and the total amount due."
      }
    ],
    "baseProcessor": "classification_standard",
    "baseVersion": "3.2.0",
    "classificationRules": "Remember, when it comes to differentiating between invoices and purchase orders, the most important thing to look for is the date of the document.",
    "advancedOptions": {
      "context": "default",
      "advancedMultimodalEnabled": true,
      "memoryEnabled": false,
      "pageRanges": [
        {
          "start": 1,
          "end": 10
        },
        {
          "start": 20,
          "end": 30
        }
      ]
    },
    "parseConfig": {
      "target": "markdown",
      "chunkingStrategy": {
        "type": "page",
        "options": {
          "minCharacters": 500,
          "maxCharacters": 10000
        }
      },
      "engine": "parse_performance",
      "engineVersion": "latest",
      "blockOptions": {
        "figures": {
          "enabled": true,
          "figureImageClippingEnabled": true,
          "advancedChartExtractionEnabled": false,
          "customInstructions": "string"
        },
        "tables": {
          "targetFormat": "html",
          "tableHeaderContinuationEnabled": false,
          "cellBlocksEnabled": false,
          "agentic": {
            "enabled": false,
            "customInstructions": "string"
          },
          "enabled": true
        },
        "text": {
          "signatureDetectionEnabled": false,
          "agentic": {
            "enabled": false,
            "customInstructions": "string"
          }
        },
        "keyValue": {
          "blankFieldFormattingEnabled": false
        },
        "barcodes": {
          "imageClippingEnabled": false,
          "readingEnabled": false
        },
        "formulas": {
          "enabled": false
        }
      },
      "advancedOptions": {
        "pageRotationEnabled": true,
        "pageRanges": [
          {
            "start": 1,
            "end": 10
          },
          {
            "start": 20,
            "end": 30
          }
        ],
        "excelParsingMode": "basic",
        "excelSkipHiddenContent": false,
        "excelUseRawCellValues": false,
        "excelSkipCalculation": true,
        "excelIncludeCellMetadata": false,
        "excelIncludeCellFormatting": false,
        "verticalGroupingThreshold": 1,
        "returnOcr": {
          "words": false,
          "lines": false
        },
        "alwaysConvertToPdf": false,
        "enrichmentFormat": "xml",
        "imageConversionQuality": "medium",
        "formattingDetection": [
          {
            "type": "change_tracking"
          }
        ]
      }
    }
  },
  "classifierId": "cl_Xj8mK2pL9nR4vT7qY5wZ",
  "createdAt": "2024-03-21T16:45:00Z",
  "createdBy": {
    "type": "user",
    "email": "matt@extend.app"
  }
}

This endpoint allows you to publish a new version of an existing classifier. Publishing a new version creates a snapshot of the classifier's current configuration and makes it available for use in workflows.

Publishing a new version does not automatically update existing workflows using this classifier. You may need to manually update workflows to use the new version if desired.

Authentication

AuthorizationBearer

Bearer authentication of the form Bearer <token>, where token is your auth token.

Path parameters

classifierIdstringRequired

The ID of the classifier.

Example: "cl_Xj8mK2pL9nR4vT7qY5wZ"

Headers

Request

This endpoint expects an object.

releaseTypeenumRequired

The type of release for this version. The two options are "major" and "minor", which will increment the version number accordingly.

Allowed values:

descriptionstringOptional

A description of the changes in this version. This helps track the evolution of the processor over time.

configobjectOptional

The configuration for this version of the classifier.

Response

Successfully published classifier version

objectenum

The type of object. Will always be "classifier_version".

Allowed values:

idstring

The unique identifier for this version of the classifier.

Example: "clv_xK9mLPqRtN3vS8wF5hB2cQ"

descriptionstring or null

A description of this version of the classifier.

Example: "Added new document types for Q4 processing"

versionstring

The version number or identifier for this specific version of the classifier. The draft version will have version=“draft”.

Examples: "1.0", "2.1", "draft"

configobject

The configuration settings for this version of the classifier.

classifierIdstring

The ID of the classifier that this version belongs to.

Example: "cl_Xj8mK2pL9nR4vT7qY5wZ"

createdAtstringformat: "date-time"

The time (in UTC) at which the object was created. Will follow the RFC 3339 format.

Example: "2024-03-21T16:45:00Z"

createdByobject

The actor that created this resource.

user — the resource was created via the studio by a logged-in user. The user’s email is exposed.
api_key — the resource was created via the API using an API key. The key’s name is exposed.

May be null for resources created before attribution.

Errors

400

Bad Request Error

401

Unauthorized Error

402

Payment Required Error

403

Forbidden Error

404

Not Found Error

422

Unprocessable Entity Error

429

Too Many Requests Error

500

Internal Server Error