curl --request POST \
  --url https://api.gcore.com/cloud/v1/securitygroups/{project_id}/{region_id} \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "security_group": {
    "name": "my_security_group",
    "description": "Some description",
    "security_group_rules": [
      {
        "direction": "ingress",
        "description": "Some description",
        "ethertype": "IPv4",
        "port_range_max": 80,
        "port_range_min": 80,
        "protocol": "tcp",
        "remote_group_id": "00000000-0000-4000-8000-000000000000",
        "remote_ip_prefix": "10.0.0.0/8"
      }
    ],
    "tags": {}
  },
  "instances": [
    "00000000-0000-4000-8000-000000000000"
  ]
}
'

import requests

url = "https://api.gcore.com/cloud/v1/securitygroups/{project_id}/{region_id}"

payload = {
    "security_group": {
        "name": "my_security_group",
        "description": "Some description",
        "security_group_rules": [
            {
                "direction": "ingress",
                "description": "Some description",
                "ethertype": "IPv4",
                "port_range_max": 80,
                "port_range_min": 80,
                "protocol": "tcp",
                "remote_group_id": "00000000-0000-4000-8000-000000000000",
                "remote_ip_prefix": "10.0.0.0/8"
            }
        ],
        "tags": {}
    },
    "instances": ["00000000-0000-4000-8000-000000000000"]
}
headers = {
    "Authorization": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    security_group: {
      name: 'my_security_group',
      description: 'Some description',
      security_group_rules: [
        {
          direction: 'ingress',
          description: 'Some description',
          ethertype: 'IPv4',
          port_range_max: 80,
          port_range_min: 80,
          protocol: 'tcp',
          remote_group_id: '00000000-0000-4000-8000-000000000000',
          remote_ip_prefix: '10.0.0.0/8'
        }
      ],
      tags: {}
    },
    instances: ['00000000-0000-4000-8000-000000000000']
  })
};

fetch('https://api.gcore.com/cloud/v1/securitygroups/{project_id}/{region_id}', 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/securitygroups/{project_id}/{region_id}",
  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([
    'security_group' => [
        'name' => 'my_security_group',
        'description' => 'Some description',
        'security_group_rules' => [
                [
                                'direction' => 'ingress',
                                'description' => 'Some description',
                                'ethertype' => 'IPv4',
                                'port_range_max' => 80,
                                'port_range_min' => 80,
                                'protocol' => 'tcp',
                                'remote_group_id' => '00000000-0000-4000-8000-000000000000',
                                'remote_ip_prefix' => '10.0.0.0/8'
                ]
        ],
        'tags' => [
                
        ]
    ],
    'instances' => [
        '00000000-0000-4000-8000-000000000000'
    ]
  ]),
  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;
}

package main

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

func main() {

	url := "https://api.gcore.com/cloud/v1/securitygroups/{project_id}/{region_id}"

	payload := strings.NewReader("{\n  \"security_group\": {\n    \"name\": \"my_security_group\",\n    \"description\": \"Some description\",\n    \"security_group_rules\": [\n      {\n        \"direction\": \"ingress\",\n        \"description\": \"Some description\",\n        \"ethertype\": \"IPv4\",\n        \"port_range_max\": 80,\n        \"port_range_min\": 80,\n        \"protocol\": \"tcp\",\n        \"remote_group_id\": \"00000000-0000-4000-8000-000000000000\",\n        \"remote_ip_prefix\": \"10.0.0.0/8\"\n      }\n    ],\n    \"tags\": {}\n  },\n  \"instances\": [\n    \"00000000-0000-4000-8000-000000000000\"\n  ]\n}")

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

	req.Header.Add("Authorization", "<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://api.gcore.com/cloud/v1/securitygroups/{project_id}/{region_id}")
  .header("Authorization", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"security_group\": {\n    \"name\": \"my_security_group\",\n    \"description\": \"Some description\",\n    \"security_group_rules\": [\n      {\n        \"direction\": \"ingress\",\n        \"description\": \"Some description\",\n        \"ethertype\": \"IPv4\",\n        \"port_range_max\": 80,\n        \"port_range_min\": 80,\n        \"protocol\": \"tcp\",\n        \"remote_group_id\": \"00000000-0000-4000-8000-000000000000\",\n        \"remote_ip_prefix\": \"10.0.0.0/8\"\n      }\n    ],\n    \"tags\": {}\n  },\n  \"instances\": [\n    \"00000000-0000-4000-8000-000000000000\"\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

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

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  \"security_group\": {\n    \"name\": \"my_security_group\",\n    \"description\": \"Some description\",\n    \"security_group_rules\": [\n      {\n        \"direction\": \"ingress\",\n        \"description\": \"Some description\",\n        \"ethertype\": \"IPv4\",\n        \"port_range_max\": 80,\n        \"port_range_min\": 80,\n        \"protocol\": \"tcp\",\n        \"remote_group_id\": \"00000000-0000-4000-8000-000000000000\",\n        \"remote_ip_prefix\": \"10.0.0.0/8\"\n      }\n    ],\n    \"tags\": {}\n  },\n  \"instances\": [\n    \"00000000-0000-4000-8000-000000000000\"\n  ]\n}"

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

{
  "created_at": "2019-06-18T11:56:16+0000",
  "description": "Some description",
  "id": "00000000-0000-4000-8000-000000000000",
  "name": "my_security_group",
  "project_id": 1337,
  "region": "Luxembourg 1",
  "region_id": 7,
  "revision_number": 1,
  "tags_v2": [
    {
      "key": "my-tag",
      "read_only": false,
      "value": "my-tag-value"
    }
  ],
  "updated_at": "2019-06-18T11:57:00+0000",
  "security_group_rules": [
    {
      "created_at": "2019-06-18T11:56:16+0000",
      "description": "Some description",
      "ethertype": "IPv4",
      "id": "00000000-0000-4000-8000-000000000000",
      "port_range_max": 80,
      "port_range_min": 80,
      "protocol": "tcp",
      "remote_group_id": [
        "00000000-0000-4000-8000-000000000000"
      ],
      "remote_ip_prefix": "10.0.0.0/8",
      "revision_number": 0,
      "security_group_id": "00000000-0000-4000-8000-000000000000",
      "updated_at": "2019-06-18T11:57:00+0000"
    }
  ]
}