Combine

curl --request POST \
  --url 'https://icrc-mainnet.icp.validationcloud.io/v1/<YOUR_API_KEY_HERE>/construction/combine' \
  --header 'Content-Type: application/json' \
  --data '
{
  "unsigned_transaction": "<string>",
  "signatures": [
    {
      "signing_payload": {
        "address": "<string>",
        "hex_bytes": "<string>",
        "signature_type": "<string>"
      },
      "public_key": {
        "hex_bytes": "<string>",
        "curve_type": "<string>"
      },
      "signature_type": "<string>",
      "hex_bytes": "<string>"
    }
  ]
}
'

import requests

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

payload = {
    "unsigned_transaction": "<string>",
    "signatures": [
        {
            "signing_payload": {
                "address": "<string>",
                "hex_bytes": "<string>",
                "signature_type": "<string>"
            },
            "public_key": {
                "hex_bytes": "<string>",
                "curve_type": "<string>"
            },
            "signature_type": "<string>",
            "hex_bytes": "<string>"
        }
    ]
}
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({
    unsigned_transaction: '<string>',
    signatures: [
      {
        signing_payload: {address: '<string>', hex_bytes: '<string>', signature_type: '<string>'},
        public_key: {hex_bytes: '<string>', curve_type: '<string>'},
        signature_type: '<string>',
        hex_bytes: '<string>'
      }
    ]
  })
};

fetch('https://icrc-mainnet.icp.validationcloud.io/v1/<YOUR_API_KEY_HERE>/construction/combine', 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://icrc-mainnet.icp.validationcloud.io/v1/<YOUR_API_KEY_HERE>/construction/combine",
  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([
    'unsigned_transaction' => '<string>',
    'signatures' => [
        [
                'signing_payload' => [
                                'address' => '<string>',
                                'hex_bytes' => '<string>',
                                'signature_type' => '<string>'
                ],
                'public_key' => [
                                'hex_bytes' => '<string>',
                                'curve_type' => '<string>'
                ],
                'signature_type' => '<string>',
                'hex_bytes' => '<string>'
        ]
    ]
  ]),
  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://icrc-mainnet.icp.validationcloud.io/v1/<YOUR_API_KEY_HERE>/construction/combine"

	payload := strings.NewReader("{\n  \"unsigned_transaction\": \"<string>\",\n  \"signatures\": [\n    {\n      \"signing_payload\": {\n        \"address\": \"<string>\",\n        \"hex_bytes\": \"<string>\",\n        \"signature_type\": \"<string>\"\n      },\n      \"public_key\": {\n        \"hex_bytes\": \"<string>\",\n        \"curve_type\": \"<string>\"\n      },\n      \"signature_type\": \"<string>\",\n      \"hex_bytes\": \"<string>\"\n    }\n  ]\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://icrc-mainnet.icp.validationcloud.io/v1/<YOUR_API_KEY_HERE>/construction/combine")
  .header("Content-Type", "application/json")
  .body("{\n  \"unsigned_transaction\": \"<string>\",\n  \"signatures\": [\n    {\n      \"signing_payload\": {\n        \"address\": \"<string>\",\n        \"hex_bytes\": \"<string>\",\n        \"signature_type\": \"<string>\"\n      },\n      \"public_key\": {\n        \"hex_bytes\": \"<string>\",\n        \"curve_type\": \"<string>\"\n      },\n      \"signature_type\": \"<string>\",\n      \"hex_bytes\": \"<string>\"\n    }\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

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

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  \"unsigned_transaction\": \"<string>\",\n  \"signatures\": [\n    {\n      \"signing_payload\": {\n        \"address\": \"<string>\",\n        \"hex_bytes\": \"<string>\",\n        \"signature_type\": \"<string>\"\n      },\n      \"public_key\": {\n        \"hex_bytes\": \"<string>\",\n        \"curve_type\": \"<string>\"\n      },\n      \"signature_type\": \"<string>\",\n      \"hex_bytes\": \"<string>\"\n    }\n  ]\n}"

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

{
  "signed_transaction": "<string>"
}