curl --request POST \
  --url https://sandbox.killb.app/api/v2/payins \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "preFundAccountId": "e8d74b2f-86df-43b0-a9d9-72055a6b0432",
  "method": "PSE",
  "amount": 8000,
  "externalId": "d00e4f43-2022-42f3-ba1c-dcf4c1dcd934",
  "metadata": {
    "orderId": "abc123",
    "channel": "mobile"
  }
}
'

import requests

url = "https://sandbox.killb.app/api/v2/payins"

payload = {
    "preFundAccountId": "e8d74b2f-86df-43b0-a9d9-72055a6b0432",
    "method": "PSE",
    "amount": 8000,
    "externalId": "d00e4f43-2022-42f3-ba1c-dcf4c1dcd934",
    "metadata": {
        "orderId": "abc123",
        "channel": "mobile"
    }
}
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({
    preFundAccountId: 'e8d74b2f-86df-43b0-a9d9-72055a6b0432',
    method: 'PSE',
    amount: 8000,
    externalId: 'd00e4f43-2022-42f3-ba1c-dcf4c1dcd934',
    metadata: {orderId: 'abc123', channel: 'mobile'}
  })
};

fetch('https://sandbox.killb.app/api/v2/payins', 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://sandbox.killb.app/api/v2/payins",
  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([
    'preFundAccountId' => 'e8d74b2f-86df-43b0-a9d9-72055a6b0432',
    'method' => 'PSE',
    'amount' => 8000,
    'externalId' => 'd00e4f43-2022-42f3-ba1c-dcf4c1dcd934',
    'metadata' => [
        'orderId' => 'abc123',
        'channel' => 'mobile'
    ]
  ]),
  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://sandbox.killb.app/api/v2/payins"

	payload := strings.NewReader("{\n  \"preFundAccountId\": \"e8d74b2f-86df-43b0-a9d9-72055a6b0432\",\n  \"method\": \"PSE\",\n  \"amount\": 8000,\n  \"externalId\": \"d00e4f43-2022-42f3-ba1c-dcf4c1dcd934\",\n  \"metadata\": {\n    \"orderId\": \"abc123\",\n    \"channel\": \"mobile\"\n  }\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://sandbox.killb.app/api/v2/payins")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"preFundAccountId\": \"e8d74b2f-86df-43b0-a9d9-72055a6b0432\",\n  \"method\": \"PSE\",\n  \"amount\": 8000,\n  \"externalId\": \"d00e4f43-2022-42f3-ba1c-dcf4c1dcd934\",\n  \"metadata\": {\n    \"orderId\": \"abc123\",\n    \"channel\": \"mobile\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://sandbox.killb.app/api/v2/payins")

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  \"preFundAccountId\": \"e8d74b2f-86df-43b0-a9d9-72055a6b0432\",\n  \"method\": \"PSE\",\n  \"amount\": 8000,\n  \"externalId\": \"d00e4f43-2022-42f3-ba1c-dcf4c1dcd934\",\n  \"metadata\": {\n    \"orderId\": \"abc123\",\n    \"channel\": \"mobile\"\n  }\n}"

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

{
  "id": "e8d74b2f-86df-43b0-a9d9-72055a6b0432",
  "amount": 8000,
  "currency": "COP",
  "method": "PSE",
  "status": "CASH_IN_CREATED",
  "createdAt": "2026-04-23T00:38:08.439Z",
  "updatedAt": "2026-04-23T00:38:08.439Z",
  "paymentInfo": [
    "<string>"
  ],
  "details": "Payment processed successfully",
  "externalId": "d00e4f43-2022-42f3-ba1c-dcf4c1dcd934",
  "metadata": {
    "orderId": "abc123",
    "channel": "mobile"
  }
}

{
  "errorCode": "API_USER.0001",
  "arguments": [
    {
      "key": "email",
      "value": "[email protected]"
    }
  ],
  "message": [
    "User not found",
    "Account not found"
  ],
  "statusCode": "400"
}

{
  "statusCode": "500",
  "message": [
    "Internal server error"
  ]
}