const sequences = [
 {
  externalId: 'sequence_name',
  columns: [
   {
     externalId: 'one',
     valueType: SequenceValueType.LONG,
   },
   {
     externalId: 'two',
   },
   {
     externalId: 'three',
     valueType: SequenceValueType.STRING,
   }
  ]
 }
];
const [sequence] = await client.sequences.create(sequences);

from cognite.client.data_classes import SequenceWrite, SequenceColumnWrite
column_def = [
    SequenceColumnWrite(value_type="String", external_id="user", description="some description"),
    SequenceColumnWrite(value_type="Double", external_id="amount")
]
seq = client.sequences.create(SequenceWrite(external_id="my_sequence", columns=column_def))

seq2 = client.sequences.create(SequenceWrite(external_id="my_copied_sequence", columns=column_def))

List<SequenceColumn> columns = List.of(SequenceColumn.newBuilder() 
          .setExternalId("10") 
          .setName("test_column_") 
          .setDescription("Description") 
          .setValueTypeValue(SequenceColumn.ValueType.STRING_VALUE) 
     .build()); 

 List<SequenceMetadata> upsertSequencesList = List.of( SequenceMetadata.newBuilder() 
          .setExternalId("10") 
          .setName("test_sequence_") 
          .setDescription("Description") 
          .putMetadata("type", "sdk-data-generator") 
          .addAllColumns(columns) 
     .build()); 

 client.sequences().upsert(upsertSequencesList);

curl --request POST \
  --url https://{cluster}.cognitedata.com/api/v1/projects/{project}/sequences \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "items": [
    {
      "columns": [
        {
          "externalId": "DPS1",
          "name": "depth",
          "description": "Optional description",
          "valueType": "DOUBLE",
          "metadata": {
            "extracted-by": "cognite"
          }
        }
      ],
      "name": "Any relevant name",
      "description": "Optional description",
      "assetId": 1221123111,
      "externalId": "my.known.id",
      "metadata": {
        "extracted-by": "cognite"
      },
      "dataSetId": 4503599627370496
    }
  ]
}
'

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://{cluster}.cognitedata.com/api/v1/projects/{project}/sequences",
  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' => [
        [
                'columns' => [
                                [
                                                                'externalId' => 'DPS1',
                                                                'name' => 'depth',
                                                                'description' => 'Optional description',
                                                                'valueType' => 'DOUBLE',
                                                                'metadata' => [
                                                                                                                                'extracted-by' => 'cognite'
                                                                ]
                                ]
                ],
                'name' => 'Any relevant name',
                'description' => 'Optional description',
                'assetId' => 1221123111,
                'externalId' => 'my.known.id',
                'metadata' => [
                                'extracted-by' => 'cognite'
                ],
                'dataSetId' => 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}/sequences"

	payload := strings.NewReader("{\n  \"items\": [\n    {\n      \"columns\": [\n        {\n          \"externalId\": \"DPS1\",\n          \"name\": \"depth\",\n          \"description\": \"Optional description\",\n          \"valueType\": \"DOUBLE\",\n          \"metadata\": {\n            \"extracted-by\": \"cognite\"\n          }\n        }\n      ],\n      \"name\": \"Any relevant name\",\n      \"description\": \"Optional description\",\n      \"assetId\": 1221123111,\n      \"externalId\": \"my.known.id\",\n      \"metadata\": {\n        \"extracted-by\": \"cognite\"\n      },\n      \"dataSetId\": 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}/sequences")

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      \"columns\": [\n        {\n          \"externalId\": \"DPS1\",\n          \"name\": \"depth\",\n          \"description\": \"Optional description\",\n          \"valueType\": \"DOUBLE\",\n          \"metadata\": {\n            \"extracted-by\": \"cognite\"\n          }\n        }\n      ],\n      \"name\": \"Any relevant name\",\n      \"description\": \"Optional description\",\n      \"assetId\": 1221123111,\n      \"externalId\": \"my.known.id\",\n      \"metadata\": {\n        \"extracted-by\": \"cognite\"\n      },\n      \"dataSetId\": 4503599627370496\n    }\n  ]\n}"

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

{
  "items": [
    {
      "id": 1,
      "columns": [
        {
          "valueType": "DOUBLE",
          "createdTime": 100000000000,
          "lastUpdatedTime": 100000000000,
          "name": "depth",
          "externalId": "DPS1",
          "description": "Optional description",
          "metadata": {
            "extracted-by": "cognite"
          }
        }
      ],
      "createdTime": 100000000000,
      "lastUpdatedTime": 100000000000,
      "name": "Any relevant name",
      "description": "Optional description",
      "assetId": 1221123111,
      "externalId": "my.known.id",
      "metadata": {
        "extracted-by": "cognite"
      },
      "dataSetId": 2718281828459
    }
  ]
}

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