curl --request POST \
  --url https://api.gcore.com/cloud/v1/routers/{project_id}/{region_id} \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "my_wonderful_router",
  "external_gateway_info": {
    "enable_snat": true,
    "type": "default"
  },
  "interfaces": [
    {
      "subnet_id": "3ed9e2ce-f906-47fb-ba32-c25a3f63df4f",
      "type": "subnet"
    }
  ],
  "routes": [
    {
      "destination": "10.0.3.0/24",
      "nexthop": "10.0.0.13"
    }
  ]
}
'

import requests

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

payload = {
    "name": "my_wonderful_router",
    "external_gateway_info": {
        "enable_snat": True,
        "type": "default"
    },
    "interfaces": [
        {
            "subnet_id": "3ed9e2ce-f906-47fb-ba32-c25a3f63df4f",
            "type": "subnet"
        }
    ],
    "routes": [
        {
            "destination": "10.0.3.0/24",
            "nexthop": "10.0.0.13"
        }
    ]
}
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({
    name: 'my_wonderful_router',
    external_gateway_info: {enable_snat: true, type: 'default'},
    interfaces: [{subnet_id: '3ed9e2ce-f906-47fb-ba32-c25a3f63df4f', type: 'subnet'}],
    routes: [{destination: '10.0.3.0/24', nexthop: '10.0.0.13'}]
  })
};

fetch('https://api.gcore.com/cloud/v1/routers/{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/routers/{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([
    'name' => 'my_wonderful_router',
    'external_gateway_info' => [
        'enable_snat' => true,
        'type' => 'default'
    ],
    'interfaces' => [
        [
                'subnet_id' => '3ed9e2ce-f906-47fb-ba32-c25a3f63df4f',
                'type' => 'subnet'
        ]
    ],
    'routes' => [
        [
                'destination' => '10.0.3.0/24',
                'nexthop' => '10.0.0.13'
        ]
    ]
  ]),
  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/routers/{project_id}/{region_id}"

	payload := strings.NewReader("{\n  \"name\": \"my_wonderful_router\",\n  \"external_gateway_info\": {\n    \"enable_snat\": true,\n    \"type\": \"default\"\n  },\n  \"interfaces\": [\n    {\n      \"subnet_id\": \"3ed9e2ce-f906-47fb-ba32-c25a3f63df4f\",\n      \"type\": \"subnet\"\n    }\n  ],\n  \"routes\": [\n    {\n      \"destination\": \"10.0.3.0/24\",\n      \"nexthop\": \"10.0.0.13\"\n    }\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/routers/{project_id}/{region_id}")
  .header("Authorization", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"name\": \"my_wonderful_router\",\n  \"external_gateway_info\": {\n    \"enable_snat\": true,\n    \"type\": \"default\"\n  },\n  \"interfaces\": [\n    {\n      \"subnet_id\": \"3ed9e2ce-f906-47fb-ba32-c25a3f63df4f\",\n      \"type\": \"subnet\"\n    }\n  ],\n  \"routes\": [\n    {\n      \"destination\": \"10.0.3.0/24\",\n      \"nexthop\": \"10.0.0.13\"\n    }\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.gcore.com/cloud/v1/routers/{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  \"name\": \"my_wonderful_router\",\n  \"external_gateway_info\": {\n    \"enable_snat\": true,\n    \"type\": \"default\"\n  },\n  \"interfaces\": [\n    {\n      \"subnet_id\": \"3ed9e2ce-f906-47fb-ba32-c25a3f63df4f\",\n      \"type\": \"subnet\"\n    }\n  ],\n  \"routes\": [\n    {\n      \"destination\": \"10.0.3.0/24\",\n      \"nexthop\": \"10.0.0.13\"\n    }\n  ]\n}"

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

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