---
title: "Update an evaluation datapoint"
method: POST
path: "/v1/evals/{eval_id}/datapoints/{datapoint_id}"
tags: ["Evaluations"]
---

# Update an evaluation datapoint

`POST /v1/evals/{eval_id}/datapoints/{datapoint_id}`

## Request

- Base URL: `https://api.lmnr.ai`
- URL: `https://api.lmnr.ai/v1/evals/{eval_id}/datapoints/{datapoint_id}`
- Auth: HTTP bearer

Updates a datapoint's executor output, scores, and optional trace association.

## Path parameters

- `eval_id` string, uuid, required
- `datapoint_id` string, uuid, required

## Request body

- UpdateEvaluationDatapointRequest
  - `executorOutput` unknown
  - `scores` object, required
  - `traceId` string, uuid

## Response `200`

Datapoint updated; returns the datapoint ID.

- string, uuid

## Other responses

- `400`: Invalid request.
- `401`: Missing or invalid API key.

---

[API](https://skmtc.dev/laminar-sh/apis/laminar-api.md) - [All operations](https://skmtc.dev/laminar-sh/apis/laminar-api/llms.txt) - [OpenAPI document](https://skmtc.dev/laminar-sh/apis/laminar-api/revisions/8a7a08163846?raw)