import os
from gcore import Gcore

client = Gcore(
    api_key=os.environ.get("GCORE_API_KEY"),  # This is the default and can be omitted
)
task_id_list = client.cloud.instances.add_to_placement_group(
    instance_id="instance_id",
    project_id=0,
    region_id=0,
    servergroup_id="47003067-550a-6f17-93b6-81ee16ba061e",
)
print(task_id_list.tasks)

package main

import (
	"context"
	"fmt"

	"github.com/G-Core/gcore-go"
	"github.com/G-Core/gcore-go/cloud"
	"github.com/G-Core/gcore-go/option"
)

func main() {
	client := gcore.NewClient(
		option.WithAPIKey("My API Key"),
	)
	taskIDList, err := client.Cloud.Instances.AddToPlacementGroup(
		context.TODO(),
		"instance_id",
		cloud.InstanceAddToPlacementGroupParams{
			ProjectID:     gcore.Int(0),
			RegionID:      gcore.Int(0),
			ServergroupID: "47003067-550a-6f17-93b6-81ee16ba061e",
		},
	)
	if err != nil {
		panic(err.Error())
	}
	fmt.Printf("%+v\n", taskIDList.Tasks)
}

curl --request POST \
  --url https://api.gcore.com/cloud/v1/instances/{project_id}/{region_id}/{instance_id}/put_into_servergroup \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "servergroup_id": "47003067-550a-6f17-93b6-81ee16ba061e"
}
'

const options = {
  method: 'POST',
  headers: {Authorization: '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({servergroup_id: '47003067-550a-6f17-93b6-81ee16ba061e'})
};

fetch('https://api.gcore.com/cloud/v1/instances/{project_id}/{region_id}/{instance_id}/put_into_servergroup', 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://api.gcore.com/cloud/v1/instances/{project_id}/{region_id}/{instance_id}/put_into_servergroup",
  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([
    'servergroup_id' => '47003067-550a-6f17-93b6-81ee16ba061e'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: <api-key>",
    "Content-Type: application/json"
  ],
]);

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

curl_close($curl);

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

HttpResponse<String> response = Unirest.post("https://api.gcore.com/cloud/v1/instances/{project_id}/{region_id}/{instance_id}/put_into_servergroup")
  .header("Authorization", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"servergroup_id\": \"47003067-550a-6f17-93b6-81ee16ba061e\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.gcore.com/cloud/v1/instances/{project_id}/{region_id}/{instance_id}/put_into_servergroup")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"servergroup_id\": \"47003067-550a-6f17-93b6-81ee16ba061e\"\n}"

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

{
  "tasks": [
    "d478ae29-dedc-4869-82f0-96104425f565"
  ]
}