curl --request POST \
  --url https://api.cashfree.com/ppi/wallet/credit \
  --header 'Content-Type: application/json' \
  --header 'x-api-version: <x-api-version>' \
  --header 'x-client-id: <api-key>' \
  --header 'x-client-secret: <api-key>' \
  --data '
{
  "credit_id": "CREDIT126345",
  "user_id": "USER827364",
  "wallet_id": "WALLET936721",
  "cf_sub_wallet_id": "35246543210987654321",
  "amount": 100.5,
  "remarks": "Refund for order 123",
  "notes": {
    "example_key1": "example_value1",
    "example_key2": "example_value2"
  }
}
'

import requests

url = "https://api.cashfree.com/ppi/wallet/credit"

payload = {
    "credit_id": "CREDIT126345",
    "user_id": "USER827364",
    "wallet_id": "WALLET936721",
    "cf_sub_wallet_id": "35246543210987654321",
    "amount": 100.5,
    "remarks": "Refund for order 123",
    "notes": {
        "example_key1": "example_value1",
        "example_key2": "example_value2"
    }
}
headers = {
    "x-api-version": "<x-api-version>",
    "x-client-id": "<api-key>",
    "x-client-secret": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'x-api-version': '<x-api-version>',
    'x-client-id': '<api-key>',
    'x-client-secret': '<api-key>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    credit_id: 'CREDIT126345',
    user_id: 'USER827364',
    wallet_id: 'WALLET936721',
    cf_sub_wallet_id: '35246543210987654321',
    amount: 100.5,
    remarks: 'Refund for order 123',
    notes: {example_key1: 'example_value1', example_key2: 'example_value2'}
  })
};

fetch('https://api.cashfree.com/ppi/wallet/credit', 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.cashfree.com/ppi/wallet/credit",
  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([
    'credit_id' => 'CREDIT126345',
    'user_id' => 'USER827364',
    'wallet_id' => 'WALLET936721',
    'cf_sub_wallet_id' => '35246543210987654321',
    'amount' => 100.5,
    'remarks' => 'Refund for order 123',
    'notes' => [
        'example_key1' => 'example_value1',
        'example_key2' => 'example_value2'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "x-api-version: <x-api-version>",
    "x-client-id: <api-key>",
    "x-client-secret: <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.cashfree.com/ppi/wallet/credit"

	payload := strings.NewReader("{\n  \"credit_id\": \"CREDIT126345\",\n  \"user_id\": \"USER827364\",\n  \"wallet_id\": \"WALLET936721\",\n  \"cf_sub_wallet_id\": \"35246543210987654321\",\n  \"amount\": 100.5,\n  \"remarks\": \"Refund for order 123\",\n  \"notes\": {\n    \"example_key1\": \"example_value1\",\n    \"example_key2\": \"example_value2\"\n  }\n}")

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

	req.Header.Add("x-api-version", "<x-api-version>")
	req.Header.Add("x-client-id", "<api-key>")
	req.Header.Add("x-client-secret", "<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.cashfree.com/ppi/wallet/credit")
  .header("x-api-version", "<x-api-version>")
  .header("x-client-id", "<api-key>")
  .header("x-client-secret", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"credit_id\": \"CREDIT126345\",\n  \"user_id\": \"USER827364\",\n  \"wallet_id\": \"WALLET936721\",\n  \"cf_sub_wallet_id\": \"35246543210987654321\",\n  \"amount\": 100.5,\n  \"remarks\": \"Refund for order 123\",\n  \"notes\": {\n    \"example_key1\": \"example_value1\",\n    \"example_key2\": \"example_value2\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.cashfree.com/ppi/wallet/credit")

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

request = Net::HTTP::Post.new(url)
request["x-api-version"] = '<x-api-version>'
request["x-client-id"] = '<api-key>'
request["x-client-secret"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"credit_id\": \"CREDIT126345\",\n  \"user_id\": \"USER827364\",\n  \"wallet_id\": \"WALLET936721\",\n  \"cf_sub_wallet_id\": \"35246543210987654321\",\n  \"amount\": 100.5,\n  \"remarks\": \"Refund for order 123\",\n  \"notes\": {\n    \"example_key1\": \"example_value1\",\n    \"example_key2\": \"example_value2\"\n  }\n}"

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