curl --request POST \
  --url https://sandbox.zapyd.com/pis/api/v1/payin/initiate \
  --header 'Content-Type: application/json' \
  --header 'X-API-KEY: <api-key>' \
  --header 'X-SIGNATURE: <api-key>' \
  --header 'X-TIMESTAMP: <api-key>' \
  --data '
{
  "quotation_id": "2e104290-07c8-49f1-a5ca-0d27f0078f8a",
  "customer_id": "def8b740-99f9-4cba-bc9e-99de57e927b4",
  "client_reference_id": "testUser123",
  "transaction_reference_id": "412345678901"
}
'

import requests

url = "https://sandbox.zapyd.com/pis/api/v1/payin/initiate"

payload = {
    "quotation_id": "2e104290-07c8-49f1-a5ca-0d27f0078f8a",
    "customer_id": "def8b740-99f9-4cba-bc9e-99de57e927b4",
    "client_reference_id": "testUser123",
    "transaction_reference_id": "412345678901"
}
headers = {
    "X-API-KEY": "<api-key>",
    "X-TIMESTAMP": "<api-key>",
    "X-SIGNATURE": "<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>',
    'X-TIMESTAMP': '<api-key>',
    'X-SIGNATURE': '<api-key>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    quotation_id: '2e104290-07c8-49f1-a5ca-0d27f0078f8a',
    customer_id: 'def8b740-99f9-4cba-bc9e-99de57e927b4',
    client_reference_id: 'testUser123',
    transaction_reference_id: '412345678901'
  })
};

fetch('https://sandbox.zapyd.com/pis/api/v1/payin/initiate', 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.zapyd.com/pis/api/v1/payin/initiate",
  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([
    'quotation_id' => '2e104290-07c8-49f1-a5ca-0d27f0078f8a',
    'customer_id' => 'def8b740-99f9-4cba-bc9e-99de57e927b4',
    'client_reference_id' => 'testUser123',
    'transaction_reference_id' => '412345678901'
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "X-API-KEY: <api-key>",
    "X-SIGNATURE: <api-key>",
    "X-TIMESTAMP: <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://sandbox.zapyd.com/pis/api/v1/payin/initiate"

	payload := strings.NewReader("{\n  \"quotation_id\": \"2e104290-07c8-49f1-a5ca-0d27f0078f8a\",\n  \"customer_id\": \"def8b740-99f9-4cba-bc9e-99de57e927b4\",\n  \"client_reference_id\": \"testUser123\",\n  \"transaction_reference_id\": \"412345678901\"\n}")

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

	req.Header.Add("X-API-KEY", "<api-key>")
	req.Header.Add("X-TIMESTAMP", "<api-key>")
	req.Header.Add("X-SIGNATURE", "<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://sandbox.zapyd.com/pis/api/v1/payin/initiate")
  .header("X-API-KEY", "<api-key>")
  .header("X-TIMESTAMP", "<api-key>")
  .header("X-SIGNATURE", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"quotation_id\": \"2e104290-07c8-49f1-a5ca-0d27f0078f8a\",\n  \"customer_id\": \"def8b740-99f9-4cba-bc9e-99de57e927b4\",\n  \"client_reference_id\": \"testUser123\",\n  \"transaction_reference_id\": \"412345678901\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://sandbox.zapyd.com/pis/api/v1/payin/initiate")

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["X-TIMESTAMP"] = '<api-key>'
request["X-SIGNATURE"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"quotation_id\": \"2e104290-07c8-49f1-a5ca-0d27f0078f8a\",\n  \"customer_id\": \"def8b740-99f9-4cba-bc9e-99de57e927b4\",\n  \"client_reference_id\": \"testUser123\",\n  \"transaction_reference_id\": \"412345678901\"\n}"

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

{
  "status": true,
  "message": "Success",
  "data": {
    "id": "6a1c0e7e-2b53-4f7e-9d2f-6d6e2b1c9a10",
    "quotation_id": "2e104290-07c8-49f1-a5ca-0d27f0078f8a",
    "customer_id": "84737c7d-7b62-4204-80d6-80f6ecb3ceb4",
    "bank_id": "cab47575-bbcb-4294-81a3-30774104f3b6",
    "asset": "USDT",
    "fiat": "INR",
    "network": "tron",
    "payment_method": "IMPS",
    "sending_amount": "10000.00",
    "rate": "91.91",
    "receiving_amount": "108.80",
    "fees": {
      "client_fee_fiat": 450,
      "client_fee_crypto": 5,
      "zapyd_fee": 450,
      "pg_fee": 18,
      "client_gst_fiat": 81,
      "client_gst_crypto": 0.9,
      "zapyd_gst": 81,
      "pg_gst": 81,
      "tds": 889.17,
      "gross_effective_exchange_rate": 88.92
    },
    "client_reference_id": "payin-ref-001",
    "wallet_address": "TXqH4MnDw46f3yyrRwau3JF92Y1ie3pAXf",
    "transaction_reference_id": "412345678901",
    "status": "PROCESSING",
    "deposit_instructions": {
      "account_number": "1234567890",
      "ifsc": "SBIN0000001",
      "account_name": "Sandbox Technologies Pvt Ltd",
      "deep_link": "upi://pay?pa=testing-payin@ybl&am=1000",
      "ios_checkout_link": "https://pay.google.com/upi/deeplink?pa=testing-payin@ybl&am=1000"
    },
    "created_at": "2026-09-30T10:00:00Z"
  }
}

{
  "status": false,
  "message": "Bad Request",
  "err_code": "REQ_FIELD_MISSING",
  "errors": {
    "quotation_id": [
      "This field is required."
    ]
  },
  "data": null
}

{
  "status": false,
  "message": "Internal Server Error",
  "data": null,
  "err_code": "SYS_INTERNAL_ERROR",
  "errors": "Unexpected error occurred. Please try again later."
}