curl --request POST \
  --url https://studio.edgeimpulse.com/v1/api/{projectId}/split-preview \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "trainingSplitRatio": 123,
  "testingSplitRatio": 123,
  "validationSplitRatio": 123,
  "excludeDisabledSamples": false,
  "stratifyBy": {
    "label": true,
    "metadataKeys": [
      "<string>"
    ]
  },
  "keepTogetherMetadataKeys": [
    "<string>"
  ]
}
'

import requests

url = "https://studio.edgeimpulse.com/v1/api/{projectId}/split-preview"

payload = {
    "trainingSplitRatio": 123,
    "testingSplitRatio": 123,
    "validationSplitRatio": 123,
    "excludeDisabledSamples": False,
    "stratifyBy": {
        "label": True,
        "metadataKeys": ["<string>"]
    },
    "keepTogetherMetadataKeys": ["<string>"]
}
headers = {
    "x-api-key": "<api-key>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {'x-api-key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    trainingSplitRatio: 123,
    testingSplitRatio: 123,
    validationSplitRatio: 123,
    excludeDisabledSamples: false,
    stratifyBy: {label: true, metadataKeys: ['<string>']},
    keepTogetherMetadataKeys: ['<string>']
  })
};

fetch('https://studio.edgeimpulse.com/v1/api/{projectId}/split-preview', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://studio.edgeimpulse.com/v1/api/{projectId}/split-preview",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'trainingSplitRatio' => 123,
    'testingSplitRatio' => 123,
    'validationSplitRatio' => 123,
    'excludeDisabledSamples' => false,
    'stratifyBy' => [
        'label' => true,
        'metadataKeys' => [
                '<string>'
        ]
    ],
    'keepTogetherMetadataKeys' => [
        '<string>'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "x-api-key: <api-key>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://studio.edgeimpulse.com/v1/api/{projectId}/split-preview"

	payload := strings.NewReader("{\n  \"trainingSplitRatio\": 123,\n  \"testingSplitRatio\": 123,\n  \"validationSplitRatio\": 123,\n  \"excludeDisabledSamples\": false,\n  \"stratifyBy\": {\n    \"label\": true,\n    \"metadataKeys\": [\n      \"<string>\"\n    ]\n  },\n  \"keepTogetherMetadataKeys\": [\n    \"<string>\"\n  ]\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("x-api-key", "<api-key>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://studio.edgeimpulse.com/v1/api/{projectId}/split-preview")
  .header("x-api-key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"trainingSplitRatio\": 123,\n  \"testingSplitRatio\": 123,\n  \"validationSplitRatio\": 123,\n  \"excludeDisabledSamples\": false,\n  \"stratifyBy\": {\n    \"label\": true,\n    \"metadataKeys\": [\n      \"<string>\"\n    ]\n  },\n  \"keepTogetherMetadataKeys\": [\n    \"<string>\"\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://studio.edgeimpulse.com/v1/api/{projectId}/split-preview")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["x-api-key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"trainingSplitRatio\": 123,\n  \"testingSplitRatio\": 123,\n  \"validationSplitRatio\": 123,\n  \"excludeDisabledSamples\": false,\n  \"stratifyBy\": {\n    \"label\": true,\n    \"metadataKeys\": [\n      \"<string>\"\n    ]\n  },\n  \"keepTogetherMetadataKeys\": [\n    \"<string>\"\n  ]\n}"

response = http.request(request)
puts response.read_body

{
  "success": true,
  "data": {
    "assignmentPreview": {
      "title": "<string>",
      "keyLabel": "<string>",
      "rows": [
        {
          "stratValue": "<string>",
          "sampleCount": 123,
          "percentWithinGroup": 123,
          "totalLengthMs": 123,
          "percentWithinGroupDuration": 123
        }
      ],
      "summary": "<string>"
    },
    "balancePreviews": [
      {
        "title": "<string>",
        "keyLabel": "<string>",
        "rows": [
          {
            "stratValue": "<string>",
            "sampleCount": 123,
            "percentWithinGroup": 123,
            "totalLengthMs": 123,
            "percentWithinGroupDuration": 123
          }
        ],
        "summary": "<string>"
      }
    ]
  },
  "error": "<string>"
}