const assets = await client.assets.update([{id: 123, update: {name: {set: 'New name'}}}]);

from cognite.client.data_classes import AssetUpdate
my_update = AssetUpdate(id=1).description.set("New description").metadata.add({"key": "value"})
res1 = client.assets.update(my_update)
another_update = AssetUpdate(id=1).description.set(None)
res2 = client.assets.update(another_update)

from cognite.client.data_classes import AssetUpdate
my_update = AssetUpdate(id=1).metadata.add({"key": "value"})
res1 = client.assets.update(my_update)
another_update = AssetUpdate(id=1).metadata.set(None)
another_update2 = AssetUpdate(id=1).metadata.set({})
res2 = client.assets.update(another_update)

from cognite.client.data_classes import AssetUpdate
my_update = AssetUpdate(id=1).labels.add(["PUMP", "VERIFIED"])
res = client.assets.update(my_update)

from cognite.client.data_classes import AssetUpdate
my_update = AssetUpdate(id=1).labels.remove("PUMP")
res = client.assets.update(my_update)

from cognite.client.data_classes import AssetUpdate
my_update = AssetUpdate(id=1).labels.set("PUMP")
res = client.assets.update(my_update)

List<Asset> upsertedAssets = client.assets().upsert(upsertAssetsList); 

curl --request POST \
  --url https://{cluster}.cognitedata.com/api/v1/projects/{project}/assets/update \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "items": [
    {
      "update": {
        "externalId": {
          "set": "my.known.id"
        },
        "description": {
          "set": "<string>"
        },
        "dataSetId": {
          "set": 123
        },
        "metadata": {
          "set": {
            "key1": "value1",
            "key2": "value2"
          }
        },
        "source": {
          "set": "<string>"
        },
        "labels": {
          "add": [
            {
              "externalId": "my.known.id"
            }
          ],
          "remove": [
            {
              "externalId": "my.known.id"
            }
          ]
        },
        "geoLocation": {
          "set": {
            "type": "Feature",
            "geometry": {
              "type": "Point",
              "coordinates": [
                123
              ]
            },
            "properties": {}
          }
        }
      },
      "id": 4503599627370496
    }
  ]
}
'

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://{cluster}.cognitedata.com/api/v1/projects/{project}/assets/update",
  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([
    'items' => [
        [
                'update' => [
                                'externalId' => [
                                                                'set' => 'my.known.id'
                                ],
                                'description' => [
                                                                'set' => '<string>'
                                ],
                                'dataSetId' => [
                                                                'set' => 123
                                ],
                                'metadata' => [
                                                                'set' => [
                                                                                                                                'key1' => 'value1',
                                                                                                                                'key2' => 'value2'
                                                                ]
                                ],
                                'source' => [
                                                                'set' => '<string>'
                                ],
                                'labels' => [
                                                                'add' => [
                                                                                                                                [
                                                                                                                                                                                                                                                                'externalId' => 'my.known.id'
                                                                                                                                ]
                                                                ],
                                                                'remove' => [
                                                                                                                                [
                                                                                                                                                                                                                                                                'externalId' => 'my.known.id'
                                                                                                                                ]
                                                                ]
                                ],
                                'geoLocation' => [
                                                                'set' => [
                                                                                                                                'type' => 'Feature',
                                                                                                                                'geometry' => [
                                                                                                                                                                                                                                                                'type' => 'Point',
                                                                                                                                                                                                                                                                'coordinates' => [
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                123
                                                                                                                                                                                                                                                                ]
                                                                                                                                ],
                                                                                                                                'properties' => [
                                                                                                                                                                                                                                                                
                                                                                                                                ]
                                                                ]
                                ]
                ],
                'id' => 4503599627370496
        ]
    ]
  ]),
  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}/assets/update"

	payload := strings.NewReader("{\n  \"items\": [\n    {\n      \"update\": {\n        \"externalId\": {\n          \"set\": \"my.known.id\"\n        },\n        \"description\": {\n          \"set\": \"<string>\"\n        },\n        \"dataSetId\": {\n          \"set\": 123\n        },\n        \"metadata\": {\n          \"set\": {\n            \"key1\": \"value1\",\n            \"key2\": \"value2\"\n          }\n        },\n        \"source\": {\n          \"set\": \"<string>\"\n        },\n        \"labels\": {\n          \"add\": [\n            {\n              \"externalId\": \"my.known.id\"\n            }\n          ],\n          \"remove\": [\n            {\n              \"externalId\": \"my.known.id\"\n            }\n          ]\n        },\n        \"geoLocation\": {\n          \"set\": {\n            \"type\": \"Feature\",\n            \"geometry\": {\n              \"type\": \"Point\",\n              \"coordinates\": [\n                123\n              ]\n            },\n            \"properties\": {}\n          }\n        }\n      },\n      \"id\": 4503599627370496\n    }\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}/assets/update")

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  \"items\": [\n    {\n      \"update\": {\n        \"externalId\": {\n          \"set\": \"my.known.id\"\n        },\n        \"description\": {\n          \"set\": \"<string>\"\n        },\n        \"dataSetId\": {\n          \"set\": 123\n        },\n        \"metadata\": {\n          \"set\": {\n            \"key1\": \"value1\",\n            \"key2\": \"value2\"\n          }\n        },\n        \"source\": {\n          \"set\": \"<string>\"\n        },\n        \"labels\": {\n          \"add\": [\n            {\n              \"externalId\": \"my.known.id\"\n            }\n          ],\n          \"remove\": [\n            {\n              \"externalId\": \"my.known.id\"\n            }\n          ]\n        },\n        \"geoLocation\": {\n          \"set\": {\n            \"type\": \"Feature\",\n            \"geometry\": {\n              \"type\": \"Point\",\n              \"coordinates\": [\n                123\n              ]\n            },\n            \"properties\": {}\n          }\n        }\n      },\n      \"id\": 4503599627370496\n    }\n  ]\n}"

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

{
  "items": [
    {
      "createdTime": 1730204346000,
      "lastUpdatedTime": 1730204346000,
      "rootId": 4503599627370496,
      "name": "<string>",
      "id": 4503599627370496,
      "aggregates": {
        "childCount": 1,
        "depth": 1,
        "path": [
          {
            "id": 4503599627370496
          }
        ]
      },
      "parentId": 4503599627370496,
      "parentExternalId": "my.known.id",
      "externalId": "my.known.id",
      "description": "<string>",
      "dataSetId": 4503599627370496,
      "metadata": {},
      "source": "<string>",
      "labels": [
        {
          "externalId": "my.known.id"
        }
      ],
      "geoLocation": {
        "type": "Feature",
        "geometry": {
          "type": "Point",
          "coordinates": [
            123
          ]
        },
        "properties": {}
      }
    }
  ]
}

{
  "error": {
    "code": 400,
    "message": "`null` values aren't allowed."
  }
}

{
  "error": {
    "code": 429,
    "message": "Project exceeded maximum number='50' of concurrent requests. Please try again later."
  }
}