HTTP / HTTPS API

REST API Protocol

What is an HTTP / HTTPS API?

HTTP / HTTPS APIs allow client applications to interact with the Gateway.sa platform using standard web requests. They are the most widely adopted integration method, enabling any modern application to send and receive messages across multiple channels with minimal setup.

Request-response based communication
Easy to integrate with any language or framework
Secure via HTTPS encryption
Suitable for low to high message volumes
JSON-based requests and responses

gateway-api-request.sh

# Send a message via Gateway.sa HTTP API

POST https://api.gateway.sa/v1/messages

{

"to": "+966500000000",

"channel": "sms",

"from": "GATEWAY-SA",

"body": "Your OTP is 482931"

}

// Response

{

"status": "200 OK",

"message_id": "msg_x9k2p1",

"delivered": true

}

200 OK — Message delivered successfully

Web & Mobile Applications

Integrate messaging directly into your web or mobile app to send OTPs, alerts, and notifications triggered by user actions in real time.

CRM & ERP Integration

Connect your CRM or ERP system to Gateway.sa's API to automate customer communications, billing alerts, and workflow notifications.

Event-Driven Messaging

Trigger messages automatically based on system events — order placements, payment confirmations, or status changes — without manual input.

On-Demand Notifications

Send on-demand messages for appointments, reminders, delivery updates, and promotional announcements to any channel on any device.

Client Application

Web / Mobile / Server

HTTPS Request

Gateway.sa Platform

HTTP API Layer & Message Processing

Route & Deliver

Messaging Channels

SMS | WhatsApp | Email | Push | Voice

Delivery

End Users

Mobile / Web / Any Device

SMS WhatsApp Email Push Voice

Key API Features Built for Performance

Gateway.sa's HTTP/HTTPS API is designed for developers who need reliable, flexible, and fast integration with the world's leading messaging infrastructure.

99.9%

API Uptime

190+

Countries Covered

<50ms

API Latency

24/7

Tech Support

RESTful Endpoints

Clean, well-structured RESTful endpoints that follow industry standards. Easily integrate with any programming language — Python, Node.js, PHP, Java, .NET, and more.

JSON-Based Communication

All requests and responses use lightweight JSON format, making parsing and integration straightforward across all modern frameworks and platforms.

Authentication via API Keys & Tokens

Secure every request with API key or OAuth token-based authentication, with support for IP whitelisting and access control for additional layers of protection.

Delivery Status Callbacks

Receive real-time delivery status notifications via webhooks. Know instantly whether your message was delivered, failed, or pending — and build logic around it.

Rate Limiting & Throttling

Built-in rate limiting and throttling controls protect your account and ensure fair usage. Configure limits per endpoint, per second, or per day based on your plan.

Multi-Channel via Single API

Send SMS, WhatsApp, Email, Push, and Voice messages through a single unified API endpoint. Switch channels with a single parameter change — no extra code needed.

Security & Authentication

HTTPS encryption on all endpoints
API key and token-based authentication
IP restrictions and access control lists
Request signing to prevent tampering

Callbacks & Webhooks

Real-time delivery status notifications
Inbound message handling & routing
Event-based webhook callbacks
Retry logic for failed webhook delivery

Performance & Scalability

High availability API endpoints (99.9% uptime)
Load-balanced infrastructure across regions
Auto-scaling for traffic spikes
Sub-50ms average API response time

Easy & Fast Integration

Go live in minutes with our well-documented RESTful API and ready-made SDKs. No complex setup required — just authenticate, call, and send.

Secure & Reliable Communication

Every API call is protected by HTTPS and token-based authentication, backed by redundant infrastructure with a 99.9% uptime SLA.

Multi-Channel Support

One API to rule them all. Send across SMS, WhatsApp, Email, Push, and Voice with a single integration — eliminating vendor sprawl.

Comprehensive Documentation & Support

Detailed API docs, code samples in all major languages, and a 24/7 support team ready to assist with your integration at every step.

What programming languages can I use with the Gateway.sa HTTP API?

The Gateway.sa HTTP/HTTPS API is language-agnostic — any language that can make HTTP requests can integrate with it. This includes Python, Node.js, PHP, Java, .NET, Ruby, Go, and many more. We also provide ready-made SDKs for the most popular languages to speed up your integration.

How does authentication work with the HTTP API?

Authentication is done via API keys passed in the request header. After registering your account, you'll receive a unique API key from your dashboard. For enhanced security, you can also restrict access by IP address and use OAuth 2.0 tokens for enterprise-level integrations.

Can I receive delivery reports and inbound messages via the API?

Yes. Gateway.sa supports webhook callbacks for both delivery status notifications and inbound messages. When a message is delivered (or fails), our platform sends an HTTP POST request to your configured webhook URL with the status details. Inbound replies are similarly forwarded to your endpoint in real time.

Is there a rate limit on API requests?

Rate limits depend on your account plan and the messaging channel used. Standard accounts have a generous default limit, and enterprise clients can request higher throughput. Our API returns standard HTTP 429 responses when a limit is reached, and our support team can adjust limits based on your volume requirements.