curl --request POST \
  --url https://network.{region}.basaltic.sh/v1/floating-ips/{floating_ip_id}/interfaces \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "interface": "crn:network:sa-saopaulo-1:my-account:vpc/prod/subnet/public/interface/eth0",
  "address_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}
'

import requests

url = "https://network.{region}.basaltic.sh/v1/floating-ips/{floating_ip_id}/interfaces"

payload = {
    "interface": "crn:network:sa-saopaulo-1:my-account:vpc/prod/subnet/public/interface/eth0",
    "address_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    interface: 'crn:network:sa-saopaulo-1:my-account:vpc/prod/subnet/public/interface/eth0',
    address_id: '3c90c3cc-0d44-4b50-8888-8dd25736052a'
  })
};

fetch('https://network.{region}.basaltic.sh/v1/floating-ips/{floating_ip_id}/interfaces', 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://network.{region}.basaltic.sh/v1/floating-ips/{floating_ip_id}/interfaces",
  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([
    'interface' => 'crn:network:sa-saopaulo-1:my-account:vpc/prod/subnet/public/interface/eth0',
    'address_id' => '3c90c3cc-0d44-4b50-8888-8dd25736052a'
  ]),
  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://network.{region}.basaltic.sh/v1/floating-ips/{floating_ip_id}/interfaces"

	payload := strings.NewReader("{\n  \"interface\": \"crn:network:sa-saopaulo-1:my-account:vpc/prod/subnet/public/interface/eth0\",\n  \"address_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\"\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))

}

HttpResponse<String> response = Unirest.post("https://network.{region}.basaltic.sh/v1/floating-ips/{floating_ip_id}/interfaces")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"interface\": \"crn:network:sa-saopaulo-1:my-account:vpc/prod/subnet/public/interface/eth0\",\n  \"address_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://network.{region}.basaltic.sh/v1/floating-ips/{floating_ip_id}/interfaces")

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  \"interface\": \"crn:network:sa-saopaulo-1:my-account:vpc/prod/subnet/public/interface/eth0\",\n  \"address_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\"\n}"

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

{
  "interface": {
    "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "crn": "crn:network:sa-saopaulo-1:my-account:vpc/prod/subnet/public/interface/web-eth0",
    "subnet": {
      "id": "550e8400-e29b-41d4-a716-446655440006",
      "crn": "crn:network:sa-saopaulo-1:my-account:vpc/prod/subnet/private",
      "name": "private"
    },
    "name": "web-eth0",
    "mac": "aa:bb:cc:dd:ee:ff",
    "attached_to": {
      "id": "550e8400-e29b-41d4-a716-446655440010",
      "crn": "crn:compute:sa-saopaulo-1:my-account:instance/web-1",
      "name": "web-1"
    },
    "tags": {},
    "created_at": "2023-11-07T05:31:56Z",
    "updated_at": "2023-11-07T05:31:56Z",
    "health": "unknown",
    "reason": "unprobed",
    "description": "Primary NIC for the web server",
    "address_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
  }
}

{
  "error": {
    "code": "INVALID_INPUT",
    "message": "Invalid request parameters",
    "request_id": "550e8400-e29b-41d4-a716-446655440000",
    "params": {
      "instances": 2,
      "pools": 0
    }
  }
}

{
  "error": {
    "code": "UNAUTHORIZED",
    "message": "Authentication required",
    "request_id": "550e8400-e29b-41d4-a716-446655440000"
  }
}

{
  "error": {
    "code": "ACCESS_DENIED",
    "message": "You don't have permission to perform this action",
    "request_id": "550e8400-e29b-41d4-a716-446655440000"
  }
}

{
  "error": {
    "code": "NOT_FOUND",
    "message": "Resource not found",
    "request_id": "550e8400-e29b-41d4-a716-446655440000"
  }
}

{
  "error": {
    "code": "INVALID_INPUT",
    "message": "Invalid request parameters",
    "request_id": "550e8400-e29b-41d4-a716-446655440000",
    "params": {
      "instances": 2,
      "pools": 0
    }
  }
}

{
  "error": {
    "code": "IDEMPOTENCY_KEY_REUSED",
    "message": "This Idempotency-Key was already used with a different request payload",
    "request_id": "550e8400-e29b-41d4-a716-446655440000"
  }
}

{
  "error": {
    "code": "INTERNAL_ERROR",
    "message": "An internal error occurred",
    "request_id": "550e8400-e29b-41d4-a716-446655440000"
  }
}