curl --request POST \
  --url https://api.kas.fyi/v1/transactions \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "transactionIds": [
    "a7177c55769381a56c126e458c8bb6046613b8a8d45c2f8d3ca5dc71a065279a"
  ],
  "includePayload": false
}
'

import requests

url = "https://api.kas.fyi/v1/transactions"

payload = {
    "transactionIds": ["a7177c55769381a56c126e458c8bb6046613b8a8d45c2f8d3ca5dc71a065279a"],
    "includePayload": False
}
headers = {
    "x-api-key": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'x-api-key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    transactionIds: ['a7177c55769381a56c126e458c8bb6046613b8a8d45c2f8d3ca5dc71a065279a'],
    includePayload: false
  })
};

fetch('https://api.kas.fyi/v1/transactions', 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.kas.fyi/v1/transactions",
  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([
    'transactionIds' => [
        'a7177c55769381a56c126e458c8bb6046613b8a8d45c2f8d3ca5dc71a065279a'
    ],
    'includePayload' => false
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "x-api-key: <api-key>"
  ],
]);

$response = curl_exec($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.kas.fyi/v1/transactions"

	payload := strings.NewReader("{\n  \"transactionIds\": [\n    \"a7177c55769381a56c126e458c8bb6046613b8a8d45c2f8d3ca5dc71a065279a\"\n  ],\n  \"includePayload\": false\n}")

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

	req.Header.Add("x-api-key", "<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.kas.fyi/v1/transactions")
  .header("x-api-key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"transactionIds\": [\n    \"a7177c55769381a56c126e458c8bb6046613b8a8d45c2f8d3ca5dc71a065279a\"\n  ],\n  \"includePayload\": false\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.kas.fyi/v1/transactions")

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

request = Net::HTTP::Post.new(url)
request["x-api-key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"transactionIds\": [\n    \"a7177c55769381a56c126e458c8bb6046613b8a8d45c2f8d3ca5dc71a065279a\"\n  ],\n  \"includePayload\": false\n}"

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

{
  "transactions": [
    {
      "transactionId": "a7177c55769381a56c126e458c8bb6046613b8a8d45c2f8d3ca5dc71a065279a",
      "blockTime": 1749531022210,
      "subnetworkId": "0000000000000000000000000000000000000000",
      "hash": "f123bed13d88bc18236d977c0035267d0054b912170fe4ae619e93306685d2af",
      "mass": "2036",
      "blockHashes": [
        "30ab8f5ac54c8aa9cbf9a69209a2061e7123293efc40630136c970abef59450b",
        "f97afb6794c56e0bb283ea6a38cc51cc41303a055ef9376e707139928cffa588"
      ],
      "acceptingBlockHash": "2a0c51fab2a7c7a187299e087a244d1e70acdc75e0214a661c62761e2d6bbf4f",
      "isAccepted": true,
      "confirmations": 10,
      "payload": "0x",
      "inputs": [
        {
          "transactionId": "a7177c55769381a56c126e458c8bb6046613b8a8d45c2f8d3ca5dc71a065279a",
          "index": 0,
          "signatureScript": "4183faed776b7f1b1ed32b97aafe3069ee357c80b637f5069ab859916a896ec69a59e9bebcc3e646587d59376a40c72dd0290f8ebdbf0b64f13e2d8f81d0fe106301",
          "sigOpCount": 1,
          "previousOutput": {
            "transactionId": "a7177c55769381a56c126e458c8bb6046613b8a8d45c2f8d3ca5dc71a065279a",
            "index": 0,
            "amount": "31112708372",
            "scriptPublicKey": "2010fdab002cff0ac15bfc8b982c5a616bef9e5a66f0c655f4f63f7d1cef39d2b4ac",
            "scriptPublicKeyAddress": "kaspa:qqg0m2cq9nls4s2mlj9estz6v947l8j6vmcvv4057clh688088ftg7ce6p895",
            "scriptPublicKeyType": "pubkey"
          }
        }
      ],
      "outputs": [
        {
          "transactionId": "a7177c55769381a56c126e458c8bb6046613b8a8d45c2f8d3ca5dc71a065279a",
          "index": 0,
          "amount": "31112708372",
          "scriptPublicKey": "2010fdab002cff0ac15bfc8b982c5a616bef9e5a66f0c655f4f63f7d1cef39d2b4ac",
          "scriptPublicKeyAddress": "kaspa:qqg0m2cq9nls4s2mlj9estz6v947l8j6vmcvv4057clh688088ftg7ce6p895",
          "scriptPublicKeyType": "pubkey"
        }
      ]
    }
  ]
}