Record experiment items in bulk | Opik Documentation

PUT/v1/private/experiments/items/bulkRecord experiment items in bulk

Record experiment items in bulk with traces, spans, and feedback scores. Maximum request size is 4MB.

Request body

application/json

objectExperimentItemBulkUpload_ExperimentItemBulkWriteView

dataset_namestringrequired

minLength 1

experiment_idstring · uuid

Optional experiment ID. If provided, items will be added to the existing experiment and experimentName will be ignored. If not provided or experiment with that ID doesn't exist, a new experiment will be created with the given experimentName

experiment_namestringrequired

minLength 1

itemsarray of objectrequired

maxItems 1000 · minItems 1

Show child attributes

maxItems 1000 · minItems 1

Show array items

dataset_item_idstring · uuidrequired

evaluate_task_resultobject

Show child attributes

anyOf · 3 options

Option 1object

Option 2array of object

Option 3string

feedback_scoresarray of object

maxItems 100 · minItems 0

Show child attributes

maxItems 100 · minItems 0

Show array items

category_namestring

created_atstring · date-time

created_bystring

last_updated_atstring · date-time

last_updated_bystring

namestringrequired

minLength 1

reasonstring

sourcestringrequired

one of "ui", "sdk", "online_scoring"

source_queue_idstring · uuid

valuenumberrequired

maximum 1000000000 · minimum -1000000000

value_by_authorobject

spansarray of object

maxItems 100 · minItems 0

Show child attributes

maxItems 100 · minItems 0

Show array items

end_timestring · date-time

environmentstring

maxLength 150 · minLength 0

error_infoobject

Show child attributes

exception_typestringrequired

minLength 1

messagestring

tracebackstringrequired

minLength 1

idstring · uuid

inputobjectJsonListString_ExperimentItemBulkWriteView ↑

last_updated_atstring · date-time

metadataobjectJsonListString_ExperimentItemBulkWriteView ↑

modelstring

namestring

outputobjectJsonListString_ExperimentItemBulkWriteView ↑

parent_span_idstring · uuid

providerstring

sourcestring

one of "sdk", "experiment", "playground", "optimization", "evaluator"

start_timestring · date-timerequired

tagsarray of string

uniqueItems true

Show child attributes

uniqueItems true

total_estimated_costnumber

minimum 0

total_estimated_cost_versionstring

ttftnumber · double

Time to first token in milliseconds

typestring

one of "general", "tool", "llm", "guardrail"

usageobject

traceobject

Please provide either none, only one of evaluate_task_result or trace, but never both

Show child attributes

end_timestring · date-time

environmentstring

maxLength 150 · minLength 0

error_infoobjectErrorInfo_ExperimentItemBulkWriteView ↑

idstring · uuid

inputobjectJsonListString_ExperimentItemBulkWriteView ↑

last_updated_atstring · date-time

metadataobjectJsonListString_ExperimentItemBulkWriteView ↑

namestring

outputobjectJsonListString_ExperimentItemBulkWriteView ↑

project_namestring

If null, the default project is used

pattern (?s)^\s*(\S.*\S|\S)\s*$

sourcestring

one of "sdk", "experiment", "playground", "optimization", "evaluator"

start_timestring · date-timerequired

tagsarray of string

uniqueItems true

Show child attributes

uniqueItems true

thread_idstring

ttftnumber · double

Time to first token in milliseconds

project_namestring

Project for traces auto-created from items that provide evaluate_task_result (i.e. without an explicit trace). If null, the default project is used; relying on this fallback is deprecated, please provide project_name explicitly.

pattern (?s)^\s*(\S.*\S|\S)\s*$

Example request

{
  "dataset_name": "string",
  "experiment_id": "00000000-0000-0000-0000-000000000000",
  "experiment_name": "string",
  "items": [
    {
      "dataset_item_id": "00000000-0000-0000-0000-000000000000",
      "evaluate_task_result": {},
      "feedback_scores": [
        {
          "category_name": "string",
          "name": "string",
          "reason": "string",
          "source": "online_scoring",
          "source_queue_id": "00000000-0000-0000-0000-000000000000",
          "value": 0
        }
      ],
      "spans": [
        {
          "end_time": "2026-06-09T00:00:00Z",
          "environment": "string",
          "error_info": {
            "exception_type": "string",
            "message": "string",
            "traceback": "string"
          },
          "id": "00000000-0000-0000-0000-000000000000",
          "input": {},
          "last_updated_at": "2026-06-09T00:00:00Z",
          "metadata": {},
          "model": "string",
          "name": "string",
          "output": {},
          "parent_span_id": "00000000-0000-0000-0000-000000000000",
          "provider": "string",
          "source": "evaluator",
          "start_time": "2026-06-09T00:00:00Z",
          "tags": [
            "string"
          ],
          "total_estimated_cost": 0,
          "total_estimated_cost_version": "string",
          "ttft": 0,
          "type": "general",
          "usage": {
            "additionalProp1": 0
          }
        }
      ],
      "trace": {
        "end_time": "2026-06-09T00:00:00Z",
        "environment": "string",
        "error_info": {
          "exception_type": "string",
          "message": "string",
          "traceback": "string"
        },
        "id": "00000000-0000-0000-0000-000000000000",
        "input": {},
        "last_updated_at": "2026-06-09T00:00:00Z",
        "metadata": {},
        "name": "string",
        "output": {},
        "project_name": "string",
        "source": "evaluator",
        "start_time": "2026-06-09T00:00:00Z",
        "tags": [
          "string"
        ],
        "thread_id": "string",
        "ttft": 0
      }
    }
  ],
  "project_name": "string"
}

Responses

objectErrorMessage

codeinteger · int32

detailsstring

messagestring

Example response

{
  "code": 0,
  "details": "string",
  "message": "string"
}

objectErrorMessage

codeinteger · int32

detailsstring

messagestring

Example response

{
  "code": 0,
  "details": "string",
  "message": "string"
}

objectErrorMessage

codeinteger · int32

detailsstring

messagestring

Example response

{
  "code": 0,
  "details": "string",
  "message": "string"
}

Examples

curl -X PUT 'http://localhost:5173/api/v1/private/experiments/items/bulk' \
  -H 'Content-Type: application/json' \
  -d '{"dataset_name":"string","experiment_id":"00000000-0000-0000-0000-000000000000","experiment_name":"string","items":[{"dataset_item_id":"00000000-0000-0000-0000-000000000000","evaluate_task_result":{},"feedback_scores":[{"category_name":"string","name":"string","reason":"string","source":"online_scoring","source_queue_id":"00000000-0000-0000-0000-000000000000","value":0}],"spans":[{"end_time":"2026-06-09T00:00:00Z","environment":"string","error_info":{"exception_type":"string","message":"string","traceback":"string"},"id":"00000000-0000-0000-0000-000000000000","input":{},"last_updated_at":"2026-06-09T00:00:00Z","metadata":{},"model":"string","name":"string","output":{},"parent_span_id":"00000000-0000-0000-0000-000000000000","provider":"string","source":"evaluator","start_time":"2026-06-09T00:00:00Z","tags":["string"],"total_estimated_cost":0,"total_estimated_cost_version":"string","ttft":0,"type":"general","usage":{"additionalProp1":0}}],"trace":{"end_time":"2026-06-09T00:00:00Z","environment":"string","error_info":{"exception_type":"string","message":"string","traceback":"string"},"id":"00000000-0000-0000-0000-000000000000","input":{},"last_updated_at":"2026-06-09T00:00:00Z","metadata":{},"name":"string","output":{},"project_name":"string","source":"evaluator","start_time":"2026-06-09T00:00:00Z","tags":["string"],"thread_id":"string","ttft":0}}],"project_name":"string"}'

const response = await fetch('http://localhost:5173/api/v1/private/experiments/items/bulk', {
  method: 'PUT',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({"dataset_name":"string","experiment_id":"00000000-0000-0000-0000-000000000000","experiment_name":"string","items":[{"dataset_item_id":"00000000-0000-0000-0000-000000000000","evaluate_task_result":{},"feedback_scores":[{"category_name":"string","name":"string","reason":"string","source":"online_scoring","source_queue_id":"00000000-0000-0000-0000-000000000000","value":0}],"spans":[{"end_time":"2026-06-09T00:00:00Z","environment":"string","error_info":{"exception_type":"string","message":"string","traceback":"string"},"id":"00000000-0000-0000-0000-000000000000","input":{},"last_updated_at":"2026-06-09T00:00:00Z","metadata":{},"model":"string","name":"string","output":{},"parent_span_id":"00000000-0000-0000-0000-000000000000","provider":"string","source":"evaluator","start_time":"2026-06-09T00:00:00Z","tags":["string"],"total_estimated_cost":0,"total_estimated_cost_version":"string","ttft":0,"type":"general","usage":{"additionalProp1":0}}],"trace":{"end_time":"2026-06-09T00:00:00Z","environment":"string","error_info":{"exception_type":"string","message":"string","traceback":"string"},"id":"00000000-0000-0000-0000-000000000000","input":{},"last_updated_at":"2026-06-09T00:00:00Z","metadata":{},"name":"string","output":{},"project_name":"string","source":"evaluator","start_time":"2026-06-09T00:00:00Z","tags":["string"],"thread_id":"string","ttft":0}}],"project_name":"string"}),
});
const data = await response.json();

const response = await fetch('http://localhost:5173/api/v1/private/experiments/items/bulk', { method: 'PUT', headers: { 'Content-Type': 'application/json' }, body: "{\"dataset_name\":\"string\",\"experiment_id\":\"00000000-0000-0000-0000-000000000000\",\"experiment_name\":\"string\",\"items\":[{\"dataset_item_id\":\"00000000-0000-0000-0000-000000000000\",\"evaluate_task_result\":{},\"feedback_scores\":[{\"category_name\":\"string\",\"name\":\"string\",\"reason\":\"string\",\"source\":\"online_scoring\",\"source_queue_id\":\"00000000-0000-0000-0000-000000000000\",\"value\":0}],\"spans\":[{\"end_time\":\"2026-06-09T00:00:00Z\",\"environment\":\"string\",\"error_info\":{\"exception_type\":\"string\",\"message\":\"string\",\"traceback\":\"string\"},\"id\":\"00000000-0000-0000-0000-000000000000\",\"input\":{},\"last_updated_at\":\"2026-06-09T00:00:00Z\",\"metadata\":{},\"model\":\"string\",\"name\":\"string\",\"output\":{},\"parent_span_id\":\"00000000-0000-0000-0000-000000000000\",\"provider\":\"string\",\"source\":\"evaluator\",\"start_time\":\"2026-06-09T00:00:00Z\",\"tags\":[\"string\"],\"total_estimated_cost\":0,\"total_estimated_cost_version\":\"string\",\"ttft\":0,\"type\":\"general\",\"usage\":{\"additionalProp1\":0}}],\"trace\":{\"end_time\":\"2026-06-09T00:00:00Z\",\"environment\":\"string\",\"error_info\":{\"exception_type\":\"string\",\"message\":\"string\",\"traceback\":\"string\"},\"id\":\"00000000-0000-0000-0000-000000000000\",\"input\":{},\"last_updated_at\":\"2026-06-09T00:00:00Z\",\"metadata\":{},\"name\":\"string\",\"output\":{},\"project_name\":\"string\",\"source\":\"evaluator\",\"start_time\":\"2026-06-09T00:00:00Z\",\"tags\":[\"string\"],\"thread_id\":\"string\",\"ttft\":0}}],\"project_name\":\"string\"}" });
console.log(await response.json());

import requests

response = requests.request(
    "PUT",
    "http://localhost:5173/api/v1/private/experiments/items/bulk",
    headers={"Content-Type": "application/json"},
    data='{"dataset_name":"string","experiment_id":"00000000-0000-0000-0000-000000000000","experiment_name":"string","items":[{"dataset_item_id":"00000000-0000-0000-0000-000000000000","evaluate_task_result":{},"feedback_scores":[{"category_name":"string","name":"string","reason":"string","source":"online_scoring","source_queue_id":"00000000-0000-0000-0000-000000000000","value":0}],"spans":[{"end_time":"2026-06-09T00:00:00Z","environment":"string","error_info":{"exception_type":"string","message":"string","traceback":"string"},"id":"00000000-0000-0000-0000-000000000000","input":{},"last_updated_at":"2026-06-09T00:00:00Z","metadata":{},"model":"string","name":"string","output":{},"parent_span_id":"00000000-0000-0000-0000-000000000000","provider":"string","source":"evaluator","start_time":"2026-06-09T00:00:00Z","tags":["string"],"total_estimated_cost":0,"total_estimated_cost_version":"string","ttft":0,"type":"general","usage":{"additionalProp1":0}}],"trace":{"end_time":"2026-06-09T00:00:00Z","environment":"string","error_info":{"exception_type":"string","message":"string","traceback":"string"},"id":"00000000-0000-0000-0000-000000000000","input":{},"last_updated_at":"2026-06-09T00:00:00Z","metadata":{},"name":"string","output":{},"project_name":"string","source":"evaluator","start_time":"2026-06-09T00:00:00Z","tags":["string"],"thread_id":"string","ttft":0}}],"project_name":"string"}',
)
print(response.json())

package main

import (
	"context"
	"net/http"
	"strings"
)

func main() {
	ctx := context.Background()
	body := strings.NewReader(`{"dataset_name":"string","experiment_id":"00000000-0000-0000-0000-000000000000","experiment_name":"string","items":[{"dataset_item_id":"00000000-0000-0000-0000-000000000000","evaluate_task_result":{},"feedback_scores":[{"category_name":"string","name":"string","reason":"string","source":"online_scoring","source_queue_id":"00000000-0000-0000-0000-000000000000","value":0}],"spans":[{"end_time":"2026-06-09T00:00:00Z","environment":"string","error_info":{"exception_type":"string","message":"string","traceback":"string"},"id":"00000000-0000-0000-0000-000000000000","input":{},"last_updated_at":"2026-06-09T00:00:00Z","metadata":{},"model":"string","name":"string","output":{},"parent_span_id":"00000000-0000-0000-0000-000000000000","provider":"string","source":"evaluator","start_time":"2026-06-09T00:00:00Z","tags":["string"],"total_estimated_cost":0,"total_estimated_cost_version":"string","ttft":0,"type":"general","usage":{"additionalProp1":0}}],"trace":{"end_time":"2026-06-09T00:00:00Z","environment":"string","error_info":{"exception_type":"string","message":"string","traceback":"string"},"id":"00000000-0000-0000-0000-000000000000","input":{},"last_updated_at":"2026-06-09T00:00:00Z","metadata":{},"name":"string","output":{},"project_name":"string","source":"evaluator","start_time":"2026-06-09T00:00:00Z","tags":["string"],"thread_id":"string","ttft":0}}],"project_name":"string"}`)
	req, err := http.NewRequestWithContext(ctx, "PUT", "http://localhost:5173/api/v1/private/experiments/items/bulk", body)
	if err != nil {
		panic(err)
	}
	req.Header.Set("Content-Type", "application/json")
	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		panic(err)
	}
	defer resp.Body.Close()
}

<?php
$request = curl_init("http://localhost:5173/api/v1/private/experiments/items/bulk");
curl_setopt($request, CURLOPT_CUSTOMREQUEST, "PUT");
curl_setopt($request, CURLOPT_POSTFIELDS, "{\"dataset_name\":\"string\",\"experiment_id\":\"00000000-0000-0000-0000-000000000000\",\"experiment_name\":\"string\",\"items\":[{\"dataset_item_id\":\"00000000-0000-0000-0000-000000000000\",\"evaluate_task_result\":{},\"feedback_scores\":[{\"category_name\":\"string\",\"name\":\"string\",\"reason\":\"string\",\"source\":\"online_scoring\",\"source_queue_id\":\"00000000-0000-0000-0000-000000000000\",\"value\":0}],\"spans\":[{\"end_time\":\"2026-06-09T00:00:00Z\",\"environment\":\"string\",\"error_info\":{\"exception_type\":\"string\",\"message\":\"string\",\"traceback\":\"string\"},\"id\":\"00000000-0000-0000-0000-000000000000\",\"input\":{},\"last_updated_at\":\"2026-06-09T00:00:00Z\",\"metadata\":{},\"model\":\"string\",\"name\":\"string\",\"output\":{},\"parent_span_id\":\"00000000-0000-0000-0000-000000000000\",\"provider\":\"string\",\"source\":\"evaluator\",\"start_time\":\"2026-06-09T00:00:00Z\",\"tags\":[\"string\"],\"total_estimated_cost\":0,\"total_estimated_cost_version\":\"string\",\"ttft\":0,\"type\":\"general\",\"usage\":{\"additionalProp1\":0}}],\"trace\":{\"end_time\":\"2026-06-09T00:00:00Z\",\"environment\":\"string\",\"error_info\":{\"exception_type\":\"string\",\"message\":\"string\",\"traceback\":\"string\"},\"id\":\"00000000-0000-0000-0000-000000000000\",\"input\":{},\"last_updated_at\":\"2026-06-09T00:00:00Z\",\"metadata\":{},\"name\":\"string\",\"output\":{},\"project_name\":\"string\",\"source\":\"evaluator\",\"start_time\":\"2026-06-09T00:00:00Z\",\"tags\":[\"string\"],\"thread_id\":\"string\",\"ttft\":0}}],\"project_name\":\"string\"}");
curl_setopt($request, CURLOPT_HTTPHEADER, ['Content-Type: application/json']);
$response = curl_exec($request);
curl_close($request);

var request = HttpRequest.newBuilder(URI.create("http://localhost:5173/api/v1/private/experiments/items/bulk"))
    .method("PUT", HttpRequest.BodyPublishers.noBody())
    .header("Content-Type", "application/json")
    .method("PUT", HttpRequest.BodyPublishers.ofString("{\"dataset_name\":\"string\",\"experiment_id\":\"00000000-0000-0000-0000-000000000000\",\"experiment_name\":\"string\",\"items\":[{\"dataset_item_id\":\"00000000-0000-0000-0000-000000000000\",\"evaluate_task_result\":{},\"feedback_scores\":[{\"category_name\":\"string\",\"name\":\"string\",\"reason\":\"string\",\"source\":\"online_scoring\",\"source_queue_id\":\"00000000-0000-0000-0000-000000000000\",\"value\":0}],\"spans\":[{\"end_time\":\"2026-06-09T00:00:00Z\",\"environment\":\"string\",\"error_info\":{\"exception_type\":\"string\",\"message\":\"string\",\"traceback\":\"string\"},\"id\":\"00000000-0000-0000-0000-000000000000\",\"input\":{},\"last_updated_at\":\"2026-06-09T00:00:00Z\",\"metadata\":{},\"model\":\"string\",\"name\":\"string\",\"output\":{},\"parent_span_id\":\"00000000-0000-0000-0000-000000000000\",\"provider\":\"string\",\"source\":\"evaluator\",\"start_time\":\"2026-06-09T00:00:00Z\",\"tags\":[\"string\"],\"total_estimated_cost\":0,\"total_estimated_cost_version\":\"string\",\"ttft\":0,\"type\":\"general\",\"usage\":{\"additionalProp1\":0}}],\"trace\":{\"end_time\":\"2026-06-09T00:00:00Z\",\"environment\":\"string\",\"error_info\":{\"exception_type\":\"string\",\"message\":\"string\",\"traceback\":\"string\"},\"id\":\"00000000-0000-0000-0000-000000000000\",\"input\":{},\"last_updated_at\":\"2026-06-09T00:00:00Z\",\"metadata\":{},\"name\":\"string\",\"output\":{},\"project_name\":\"string\",\"source\":\"evaluator\",\"start_time\":\"2026-06-09T00:00:00Z\",\"tags\":[\"string\"],\"thread_id\":\"string\",\"ttft\":0}}],\"project_name\":\"string\"}"))
    .build();
var response = HttpClient.newHttpClient().send(request, HttpResponse.BodyHandlers.ofString());

require 'net/http'

uri = URI("http://localhost:5173/api/v1/private/experiments/items/bulk")
request = Net::HTTPGenericRequest.new("PUT", true, true, uri)
request['Content-Type'] = 'application/json'
request.body = "{\"dataset_name\":\"string\",\"experiment_id\":\"00000000-0000-0000-0000-000000000000\",\"experiment_name\":\"string\",\"items\":[{\"dataset_item_id\":\"00000000-0000-0000-0000-000000000000\",\"evaluate_task_result\":{},\"feedback_scores\":[{\"category_name\":\"string\",\"name\":\"string\",\"reason\":\"string\",\"source\":\"online_scoring\",\"source_queue_id\":\"00000000-0000-0000-0000-000000000000\",\"value\":0}],\"spans\":[{\"end_time\":\"2026-06-09T00:00:00Z\",\"environment\":\"string\",\"error_info\":{\"exception_type\":\"string\",\"message\":\"string\",\"traceback\":\"string\"},\"id\":\"00000000-0000-0000-0000-000000000000\",\"input\":{},\"last_updated_at\":\"2026-06-09T00:00:00Z\",\"metadata\":{},\"model\":\"string\",\"name\":\"string\",\"output\":{},\"parent_span_id\":\"00000000-0000-0000-0000-000000000000\",\"provider\":\"string\",\"source\":\"evaluator\",\"start_time\":\"2026-06-09T00:00:00Z\",\"tags\":[\"string\"],\"total_estimated_cost\":0,\"total_estimated_cost_version\":\"string\",\"ttft\":0,\"type\":\"general\",\"usage\":{\"additionalProp1\":0}}],\"trace\":{\"end_time\":\"2026-06-09T00:00:00Z\",\"environment\":\"string\",\"error_info\":{\"exception_type\":\"string\",\"message\":\"string\",\"traceback\":\"string\"},\"id\":\"00000000-0000-0000-0000-000000000000\",\"input\":{},\"last_updated_at\":\"2026-06-09T00:00:00Z\",\"metadata\":{},\"name\":\"string\",\"output\":{},\"project_name\":\"string\",\"source\":\"evaluator\",\"start_time\":\"2026-06-09T00:00:00Z\",\"tags\":[\"string\"],\"thread_id\":\"string\",\"ttft\":0}}],\"project_name\":\"string\"}"
response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) { |http| http.request(request) }

using var client = new HttpClient();
using var request = new HttpRequestMessage(HttpMethod.Put, "http://localhost:5173/api/v1/private/experiments/items/bulk");
request.Content = new StringContent("{\"dataset_name\":\"string\",\"experiment_id\":\"00000000-0000-0000-0000-000000000000\",\"experiment_name\":\"string\",\"items\":[{\"dataset_item_id\":\"00000000-0000-0000-0000-000000000000\",\"evaluate_task_result\":{},\"feedback_scores\":[{\"category_name\":\"string\",\"name\":\"string\",\"reason\":\"string\",\"source\":\"online_scoring\",\"source_queue_id\":\"00000000-0000-0000-0000-000000000000\",\"value\":0}],\"spans\":[{\"end_time\":\"2026-06-09T00:00:00Z\",\"environment\":\"string\",\"error_info\":{\"exception_type\":\"string\",\"message\":\"string\",\"traceback\":\"string\"},\"id\":\"00000000-0000-0000-0000-000000000000\",\"input\":{},\"last_updated_at\":\"2026-06-09T00:00:00Z\",\"metadata\":{},\"model\":\"string\",\"name\":\"string\",\"output\":{},\"parent_span_id\":\"00000000-0000-0000-0000-000000000000\",\"provider\":\"string\",\"source\":\"evaluator\",\"start_time\":\"2026-06-09T00:00:00Z\",\"tags\":[\"string\"],\"total_estimated_cost\":0,\"total_estimated_cost_version\":\"string\",\"ttft\":0,\"type\":\"general\",\"usage\":{\"additionalProp1\":0}}],\"trace\":{\"end_time\":\"2026-06-09T00:00:00Z\",\"environment\":\"string\",\"error_info\":{\"exception_type\":\"string\",\"message\":\"string\",\"traceback\":\"string\"},\"id\":\"00000000-0000-0000-0000-000000000000\",\"input\":{},\"last_updated_at\":\"2026-06-09T00:00:00Z\",\"metadata\":{},\"name\":\"string\",\"output\":{},\"project_name\":\"string\",\"source\":\"evaluator\",\"start_time\":\"2026-06-09T00:00:00Z\",\"tags\":[\"string\"],\"thread_id\":\"string\",\"ttft\":0}}],\"project_name\":\"string\"}", Encoding.UTF8, "application/json");
using var response = await client.SendAsync(request);

(no response body — HTTP 204)

{
  "code": 0,
  "details": "string",
  "message": "string"
}

{
  "code": 0,
  "details": "string",
  "message": "string"
}

{
  "code": 0,
  "details": "string",
  "message": "string"
}