Update Evaluation Set Item | Extend Documentation

from extend_ai import Extend
client = Extend(
    token="YOUR_TOKEN_HERE",
    extend_api_version="2026-02-09",
)
client.evaluation_set_items.update(
    evaluation_set_id="evaluation_set_id_here",
    item_id="evaluation_set_item_id_here",
)

{
  "object": "evaluation_set_item",
  "id": "evi_kR9mNP12Qw4yTv8BdR3H",
  "evaluationSetId": "ev_2LcgeY_mp2T5yPaEuq5Lw",
  "file": {
    "object": "file",
    "id": "file_xK9mLPqRtN3vS8wF5hB2cQ",
    "name": "Invoices.pdf",
    "type": "PDF",
    "parentFileId": "file_Zk9mNP12Qw4yTv8BdR3H",
    "metadata": {
      "pageCount": 30,
      "parentSplit": {
        "id": "string",
        "type": "Invoice",
        "identifier": "other_2_9",
        "startPage": 1,
        "endPage": 10
      }
    },
    "createdAt": "2024-03-21T16:45:00Z",
    "updatedAt": "2024-03-21T16:45:00Z"
  },
  "expectedOutput": {
    "value": {}
  },
  "createdBy": {
    "type": "user",
    "email": "matt@extend.app"
  }
}

If you need to change the expected output for a given evaluation set item, you can use this endpoint to update the item. This can be useful if you need to correct an error in the expected output or if the output of the extractor, classifier, or splitter has changed.

Authentication

AuthorizationBearer

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

Path parameters

evaluationSetIdstringRequired

The ID of the evaluation set.

Example: "ev_2LcgeY_mp2T5yPaEuq5Lw"

itemIdstringRequired

The ID of the evaluation set item.

Example: "evi_kR9mNP12Qw4yTv8BdR3H"

Headers

x-extend-api-version"2026-02-09"OptionalDefaults to 2026-02-09

API version to use for the request. If you’re using an SDK, you can ignore this parameter. If you are not using an SDK and do not specify a version, you will either receive a 400 Bad Request or be set to a previous legacy version. See API Versioning for more details.

API version to use for the request. If you're using an SDK, you can ignore this parameter. If you are not using an SDK and do not specify a version, you will either receive a `400 Bad Request` or be set to a previous legacy version. See [API Versioning](https://docs.extend.ai/2026-02-09/api-reference/api-versioning) for more details.

x-extend-workspace-idstringOptional

The workspace ID to target. Required when using an organization-scoped API key; optional for workspace-scoped keys (the key is already tied to a workspace). See Authentication for details on API key scopes.

The workspace ID to target. **Required** when using an organization-scoped API key; optional for workspace-scoped keys (the key is already tied to a workspace). See [Authentication](https://docs.extend.ai/2026-02-09/api-reference/authentication) for details on API key scopes.

Request

This endpoint expects an object.

expectedOutputobjectRequired

The expected output of the extractor, classifier, or splitter when run against the file. This must conform to the output schema of the entity associated with the evaluation set.

Response

Successfully updated evaluation set item

objectenum

The type of object. In this case, it will always be "evaluation_set_item".

idstring

The ID of the evaluation set item.

Example: "evi_kR9mNP12Qw4yTv8BdR3H"

evaluationSetIdstring

The ID of the evaluation set that this item belongs to.

Example: "ev_2LcgeY_mp2T5yPaEuq5Lw"

fileobject

A summary of the file associated with the evaluation set item.

expectedOutputobject

The expected output that will be used to evaluate the performance of the extractor, classifier, or splitter associated with the evaluation set. This must conform to the output schema of the entity associated with the evaluation set.

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