curl --request POST \
  --url https://test-api.sandbox.co.in/kyc/entitylocker-sdk/sessions/create \
  --header 'Authorization: <authorization>' \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <x-api-key>' \
  --data '
{
  "@entity": "in.co.sandbox.kyc.entitylocker.sdk.session.request",
  "flow": "signin",
  "doc_types": [
    "company_master_details",
    "gstn_details",
    "udhyam_certificate"
  ]
}
'

import requests

url = "https://test-api.sandbox.co.in/kyc/entitylocker-sdk/sessions/create"

payload = {
    "@entity": "in.co.sandbox.kyc.entitylocker.sdk.session.request",
    "flow": "signin",
    "doc_types": ["company_master_details", "gstn_details", "udhyam_certificate"]
}
headers = {
    "Authorization": "<authorization>",
    "x-api-key": "<x-api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    Authorization: '<authorization>',
    'x-api-key': '<x-api-key>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    '@entity': 'in.co.sandbox.kyc.entitylocker.sdk.session.request',
    flow: 'signin',
    doc_types: ['company_master_details', 'gstn_details', 'udhyam_certificate']
  })
};

fetch('https://test-api.sandbox.co.in/kyc/entitylocker-sdk/sessions/create', 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://test-api.sandbox.co.in/kyc/entitylocker-sdk/sessions/create",
  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([
    '@entity' => 'in.co.sandbox.kyc.entitylocker.sdk.session.request',
    'flow' => 'signin',
    'doc_types' => [
        'company_master_details',
        'gstn_details',
        'udhyam_certificate'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: <authorization>",
    "Content-Type: application/json",
    "x-api-key: <x-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://test-api.sandbox.co.in/kyc/entitylocker-sdk/sessions/create"

	payload := strings.NewReader("{\n  \"@entity\": \"in.co.sandbox.kyc.entitylocker.sdk.session.request\",\n  \"flow\": \"signin\",\n  \"doc_types\": [\n    \"company_master_details\",\n    \"gstn_details\",\n    \"udhyam_certificate\"\n  ]\n}")

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

	req.Header.Add("Authorization", "<authorization>")
	req.Header.Add("x-api-key", "<x-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://test-api.sandbox.co.in/kyc/entitylocker-sdk/sessions/create")
  .header("Authorization", "<authorization>")
  .header("x-api-key", "<x-api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"@entity\": \"in.co.sandbox.kyc.entitylocker.sdk.session.request\",\n  \"flow\": \"signin\",\n  \"doc_types\": [\n    \"company_master_details\",\n    \"gstn_details\",\n    \"udhyam_certificate\"\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://test-api.sandbox.co.in/kyc/entitylocker-sdk/sessions/create")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = '<authorization>'
request["x-api-key"] = '<x-api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"@entity\": \"in.co.sandbox.kyc.entitylocker.sdk.session.request\",\n  \"flow\": \"signin\",\n  \"doc_types\": [\n    \"company_master_details\",\n    \"gstn_details\",\n    \"udhyam_certificate\"\n  ]\n}"

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

{
  "timestamp": 1750331120324,
  "transaction_id": "5ccad959-0bf4-4472-a3dd-d57e2b61b5a9",
  "data": {
    "@entity": "in.co.sandbox.kyc.entitylocker.sdk.session",
    "id": "0454f149-26d0-41ef-9f14-c54f4b5f7b70",
    "status": "created",
    "created_at": 1750331120324
  },
  "code": 200
}