curl --request POST \
  --url https://dev.dayfin.io/v2/api/coinInfo/exchange/rate \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "tranDtime": "20261014143000",
  "tranNo": "202610141430000001",
  "currCodes": [
    "USD",
    "JPY"
  ],
  "startDt": "20261001",
  "endDt": "20261014"
}
'

import requests

url = "https://dev.dayfin.io/v2/api/coinInfo/exchange/rate"

payload = {
    "tranDtime": "20261014143000",
    "tranNo": "202610141430000001",
    "currCodes": ["USD", "JPY"],
    "startDt": "20261001",
    "endDt": "20261014"
}
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({
    tranDtime: '20261014143000',
    tranNo: '202610141430000001',
    currCodes: ['USD', 'JPY'],
    startDt: '20261001',
    endDt: '20261014'
  })
};

fetch('https://dev.dayfin.io/v2/api/coinInfo/exchange/rate', 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://dev.dayfin.io/v2/api/coinInfo/exchange/rate",
  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([
    'tranDtime' => '20261014143000',
    'tranNo' => '202610141430000001',
    'currCodes' => [
        'USD',
        'JPY'
    ],
    'startDt' => '20261001',
    'endDt' => '20261014'
  ]),
  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://dev.dayfin.io/v2/api/coinInfo/exchange/rate"

	payload := strings.NewReader("{\n  \"tranDtime\": \"20261014143000\",\n  \"tranNo\": \"202610141430000001\",\n  \"currCodes\": [\n    \"USD\",\n    \"JPY\"\n  ],\n  \"startDt\": \"20261001\",\n  \"endDt\": \"20261014\"\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://dev.dayfin.io/v2/api/coinInfo/exchange/rate")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"tranDtime\": \"20261014143000\",\n  \"tranNo\": \"202610141430000001\",\n  \"currCodes\": [\n    \"USD\",\n    \"JPY\"\n  ],\n  \"startDt\": \"20261001\",\n  \"endDt\": \"20261014\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://dev.dayfin.io/v2/api/coinInfo/exchange/rate")

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  \"tranDtime\": \"20261014143000\",\n  \"tranNo\": \"202610141430000001\",\n  \"currCodes\": [\n    \"USD\",\n    \"JPY\"\n  ],\n  \"startDt\": \"20261001\",\n  \"endDt\": \"20261014\"\n}"

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

{
  "rspCode": "A0000",
  "rspMessage": "정상 처리되었습니다.",
  "dataList": [
    {
      "date": "20261014",
      "currListCnt": 2,
      "currList": [
        {
          "currCode": "USD",
          "currName": "달러",
          "dealBaseRate": "1420.50",
          "change": "5.25",
          "flag": "UP"
        }
      ]
    }
  ],
  "dataListCnt": 1
}