Preprocess

curl --request POST \
  --url 'https://icp-mainnet.icp.validationcloud.io/v1/<YOUR_API_KEY_HERE>/construction/preprocess' \
  --header 'Content-Type: application/json' \
  --data '
{
  "operations": [
    {
      "operation_identifier": {
        "index": 123,
        "network_index": 123
      },
      "related_operations": [
        {
          "index": 123,
          "network_index": 123
        }
      ],
      "type": "<string>",
      "status": "<string>",
      "amount": {
        "value": "<string>",
        "currency": {
          "symbol": "<string>",
          "decimals": 123,
          "metadata": {}
        },
        "metadata": {}
      },
      "metadata": {}
    }
  ],
  "metadata": {}
}
'

import requests

url = "https://icp-mainnet.icp.validationcloud.io/v1/<YOUR_API_KEY_HERE>/construction/preprocess"

payload = {
    "operations": [
        {
            "operation_identifier": {
                "index": 123,
                "network_index": 123
            },
            "related_operations": [
                {
                    "index": 123,
                    "network_index": 123
                }
            ],
            "type": "<string>",
            "status": "<string>",
            "amount": {
                "value": "<string>",
                "currency": {
                    "symbol": "<string>",
                    "decimals": 123,
                    "metadata": {}
                },
                "metadata": {}
            },
            "metadata": {}
        }
    ],
    "metadata": {}
}
headers = {"Content-Type": "application/json"}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    operations: [
      {
        operation_identifier: {index: 123, network_index: 123},
        related_operations: [{index: 123, network_index: 123}],
        type: '<string>',
        status: '<string>',
        amount: {
          value: '<string>',
          currency: {symbol: '<string>', decimals: 123, metadata: {}},
          metadata: {}
        },
        metadata: {}
      }
    ],
    metadata: {}
  })
};

fetch('https://icp-mainnet.icp.validationcloud.io/v1/<YOUR_API_KEY_HERE>/construction/preprocess', 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://icp-mainnet.icp.validationcloud.io/v1/<YOUR_API_KEY_HERE>/construction/preprocess",
  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([
    'operations' => [
        [
                'operation_identifier' => [
                                'index' => 123,
                                'network_index' => 123
                ],
                'related_operations' => [
                                [
                                                                'index' => 123,
                                                                'network_index' => 123
                                ]
                ],
                'type' => '<string>',
                'status' => '<string>',
                'amount' => [
                                'value' => '<string>',
                                'currency' => [
                                                                'symbol' => '<string>',
                                                                'decimals' => 123,
                                                                'metadata' => [
                                                                                                                                
                                                                ]
                                ],
                                'metadata' => [
                                                                
                                ]
                ],
                'metadata' => [
                                
                ]
        ]
    ],
    'metadata' => [
        
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "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://icp-mainnet.icp.validationcloud.io/v1/<YOUR_API_KEY_HERE>/construction/preprocess"

	payload := strings.NewReader("{\n  \"operations\": [\n    {\n      \"operation_identifier\": {\n        \"index\": 123,\n        \"network_index\": 123\n      },\n      \"related_operations\": [\n        {\n          \"index\": 123,\n          \"network_index\": 123\n        }\n      ],\n      \"type\": \"<string>\",\n      \"status\": \"<string>\",\n      \"amount\": {\n        \"value\": \"<string>\",\n        \"currency\": {\n          \"symbol\": \"<string>\",\n          \"decimals\": 123,\n          \"metadata\": {}\n        },\n        \"metadata\": {}\n      },\n      \"metadata\": {}\n    }\n  ],\n  \"metadata\": {}\n}")

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

	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://icp-mainnet.icp.validationcloud.io/v1/<YOUR_API_KEY_HERE>/construction/preprocess")
  .header("Content-Type", "application/json")
  .body("{\n  \"operations\": [\n    {\n      \"operation_identifier\": {\n        \"index\": 123,\n        \"network_index\": 123\n      },\n      \"related_operations\": [\n        {\n          \"index\": 123,\n          \"network_index\": 123\n        }\n      ],\n      \"type\": \"<string>\",\n      \"status\": \"<string>\",\n      \"amount\": {\n        \"value\": \"<string>\",\n        \"currency\": {\n          \"symbol\": \"<string>\",\n          \"decimals\": 123,\n          \"metadata\": {}\n        },\n        \"metadata\": {}\n      },\n      \"metadata\": {}\n    }\n  ],\n  \"metadata\": {}\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://icp-mainnet.icp.validationcloud.io/v1/<YOUR_API_KEY_HERE>/construction/preprocess")

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

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"operations\": [\n    {\n      \"operation_identifier\": {\n        \"index\": 123,\n        \"network_index\": 123\n      },\n      \"related_operations\": [\n        {\n          \"index\": 123,\n          \"network_index\": 123\n        }\n      ],\n      \"type\": \"<string>\",\n      \"status\": \"<string>\",\n      \"amount\": {\n        \"value\": \"<string>\",\n        \"currency\": {\n          \"symbol\": \"<string>\",\n          \"decimals\": 123,\n          \"metadata\": {}\n        },\n        \"metadata\": {}\n      },\n      \"metadata\": {}\n    }\n  ],\n  \"metadata\": {}\n}"

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

{
  "options": {},
  "required_public_keys": [
    {
      "address": "<string>",
      "sub_account": {
        "address": "<string>",
        "metadata": {}
      },
      "metadata": {}
    }
  ]
}