Send Sms With Typescript Android Gateway: In-Depth Guide

TypeScript talks REST

Sending SMS with TypeScript on an Android SMS gateway means your Node (or Bun) service POSTs JSON with a Bearer token. There is no official npm “complete TypeScript SDK” to version from us — you own a thin fetch wrapper. The phone still sends on your SIM.

Confirm schemas in API docs. Hub: Android SMS Gateway API. Pricing: devices + volume; Free is 1 device / 300 SMS lifetime.

“If every microservice imports a copy-pasted fetch snippet, the next field rename becomes five outages. One adapter module is the product — not an imaginary SDK version.”

Thin client pulse

1. 1

   fetch POST

2. 2

   Persist id

3. 3

   Webhook

4. 4

   DLR map

Layers to own

Thin fetch wrapper

Conceptual pattern only — paths and fields must match Developer Center:

// Conceptual — not an SDK; confirm fields in Developer Center
export async function sendSms(to: string, text: string, idempotencyKey: string) {
  const res = await fetch(process.env.SMS_GATEWAY_URL + '/messages', {
    method: 'POST',
    headers: {
      Authorization: `Bearer ${process.env.SMS_GATEWAY_TOKEN}`,
      'Content-Type': 'application/json',
      'Idempotency-Key': idempotencyKey,
    },
    body: JSON.stringify({ to, text }),
  });
  if (!res.ok) throw new Error(`send failed: ${res.status}`);
  return res.json();
}

Workers, not request threads

Do not block HTTP handlers on radio latency. Queue OTP and bulk. Pace to OEM rate ceilings and carrier fair-use. Isolate OTP from promotional workers.

Webhooks in Node

Verify signatures over the raw body; persist event ids; return 2xx quickly. Webhook guide.

Secrets

Env only. Rotate on staff change. Never embed tokens in Next.js public env.

Pricing

Devices + send volume. Free: 1 device / 300 SMS lifetime. Samples in other languages remain REST, not SDKs — PHP, C#.

Next steps

Setup, FAQ.