const aggregates = await client.datasets.aggregate({ filter: { writeProtected: true } });
console.log('Number of write protected datasets: ', aggregates[0].count)

aggregate_protected = client.data_sets.aggregate(filter={"write_protected": True})

Aggregate aggregate = client 
          .datasets() 
          .aggregate(Request.create() 
          .withFilterParameter("source","sdk-data-generator"));

curl --request POST \
  --url https://{cluster}.cognitedata.com/api/v1/projects/{project}/datasets/aggregate \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "filter": {
    "metadata": {},
    "createdTime": {
      "max": 1,
      "min": 1
    },
    "lastUpdatedTime": {
      "max": 1,
      "min": 1
    },
    "externalIdPrefix": "my.known.prefix",
    "writeProtected": true
  }
}
'

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://{cluster}.cognitedata.com/api/v1/projects/{project}/datasets/aggregate",
  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([
    'filter' => [
        'metadata' => [
                
        ],
        'createdTime' => [
                'max' => 1,
                'min' => 1
        ],
        'lastUpdatedTime' => [
                'max' => 1,
                'min' => 1
        ],
        'externalIdPrefix' => 'my.known.prefix',
        'writeProtected' => true
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($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://{cluster}.cognitedata.com/api/v1/projects/{project}/datasets/aggregate"

	payload := strings.NewReader("{\n  \"filter\": {\n    \"metadata\": {},\n    \"createdTime\": {\n      \"max\": 1,\n      \"min\": 1\n    },\n    \"lastUpdatedTime\": {\n      \"max\": 1,\n      \"min\": 1\n    },\n    \"externalIdPrefix\": \"my.known.prefix\",\n    \"writeProtected\": true\n  }\n}")

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

	req.Header.Add("Authorization", "Bearer <token>")
	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))

}

require 'uri'
require 'net/http'

url = URI("https://{cluster}.cognitedata.com/api/v1/projects/{project}/datasets/aggregate")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"filter\": {\n    \"metadata\": {},\n    \"createdTime\": {\n      \"max\": 1,\n      \"min\": 1\n    },\n    \"lastUpdatedTime\": {\n      \"max\": 1,\n      \"min\": 1\n    },\n    \"externalIdPrefix\": \"my.known.prefix\",\n    \"writeProtected\": true\n  }\n}"

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

{
  "items": [
    {
      "count": 123
    }
  ]
}

{
  "error": {
    "code": 401,
    "message": "Could not authenticate.",
    "missing": [
      {}
    ],
    "duplicated": [
      {}
    ]
  }
}