SMS OTPs at ₹0.25 — No DLT Required

const response = await fetch("https://api.startmessaging.com/otp/send", {
  method: "POST",
  headers: {
    "Content-Type": "application/json",
    "X-API-Key": "sm_live_your_api_key_here",
  },
  body: JSON.stringify({
    phoneNumber: "+919876543210",
    templateId: "YOUR_TEMPLATE_ID",
    variables: {
      otp: "123456",
      appName: "YourApp",
    },
  }),
});

const data = await response.json();
console.log(data);

import requests

response = requests.post(
    "https://api.startmessaging.com/otp/send",
    headers={
        "Content-Type": "application/json",
        "X-API-Key": "sm_live_your_api_key_here",
    },
    json={
        "phoneNumber": "+919876543210",
        "templateId": "YOUR_TEMPLATE_ID",
        "variables": {
            "otp": "123456",
            "appName": "YourApp"
        },
    },
)

data = response.json()
print(data)

$ch = curl_init("https://api.startmessaging.com/otp/send");

curl_setopt_array($ch, [
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_POST => true,
    CURLOPT_HTTPHEADER => [
        "Content-Type: application/json",
        "X-API-Key: sm_live_your_api_key_here",
    ],
    CURLOPT_POSTFIELDS => json_encode([
        "phoneNumber" => "+919876543210",
        "templateId" => "YOUR_TEMPLATE_ID",
        "variables" => [
            "otp" => "123456",
            "appName" => "YourApp"
        ]
    ]),
]);

$response = curl_exec($ch);
curl_close($ch);

$data = json_decode($response, true);

import java.net.http.*;
import java.net.URI;

HttpClient client = HttpClient.newHttpClient();

String body = """
    {
      "phoneNumber": "+919876543210",
      "templateId": "YOUR_TEMPLATE_ID",
      "variables": {
        "otp": "123456",
        "appName": "YourApp"
      }
    }
    """;

HttpRequest request = HttpRequest.newBuilder()
    .uri(URI.create("https://api.startmessaging.com/otp/send"))
    .header("Content-Type", "application/json")
    .header("X-API-Key", "sm_live_your_api_key_here")
    .POST(HttpRequest.BodyPublishers.ofString(body))
    .build();

HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
System.out.println(response.body());

package main

import (
  "bytes"
  "encoding/json"
  "fmt"
  "net/http"
  "io"
)

func main() {
  payload, _ := json.Marshal(map[string]interface{}{
    "phoneNumber": "+919876543210",
    "templateId":  "YOUR_TEMPLATE_ID",
    "variables": map[string]string{
      "otp":     "123456",
      "appName": "YourApp",
    },
  })

  req, _ := http.NewRequest("POST", "https://api.startmessaging.com/otp/send", bytes.NewBuffer(payload))
  req.Header.Set("Content-Type", "application/json")
  req.Header.Set("X-API-Key", "sm_live_your_api_key_here")

  resp, _ := http.DefaultClient.Do(req)
  defer resp.Body.Close()

  body, _ := io.ReadAll(resp.Body)
  fmt.Println(string(body))
}