Built by developers, for developers. Clean REST APIs, comprehensive Swagger documentation, Postman collections, and ultra-low latency webhooks (<80ms) for high-scale programmatic messaging.
200 OK • Batch of 500 messages queued
Event streamed to https://api.mycrm.com
Found contact record with 12 custom tags
Production REST API Cluster
WhatsApp Verified Lead
curl -X POST https://api.smsport.com/v1/messages/send \ -H 'Authorization: Bearer sk_live_99214...' \ -H 'Content-Type: application/json' \ -d '{"to": "+919876543210", "template": "order_update", "variables": ["Rahul", "ORD-991"]}'
06:00 PM{"status": "success", "messageId": "wamid.HBgLM...", "deliveredAt": "2026-10-08T01:20:00Z"}
99.99% API Uptime • < 80ms P99 Latency
Site Visit Confirmed
Built for real-time synchronization, high volume, and zero-code automation.
Send high-priority 1-tap OTPs, account security alerts, and payment notifications programmatically.
Connect custom legacy ERPs (SAP, Oracle, custom SQL databases) via secure REST endpoints.
Stream sent, delivered, read, and inbound message reply events directly into your backend architecture.
Programmatically provision WhatsApp numbers, templates, and permissions for your own software customers.
Generate API Keys
Create production Bearer Tokens in developer settings
Test with Postman Collection
Import pre-configured environment & cURL endpoints
Configure Webhook URL
Receive signed JSON event payloads with HMAC SHA-256
Scale Programmatic Volume
Send millions of daily messages with guaranteed delivery
Official Meta Cloud API architecture built for speed, real-time webhooks, and reliability.
Hosted on Tier-3 Google Cloud Mumbai data centers for blazing-fast dispatch across India and APAC.
Complete Swagger OpenAPI specs, Postman collections, and code snippets in Node.js, Python, PHP, and cURL.
Cryptographically signed webhook headers ensure every received payload originated securely from SmsPort.
Everything your operations, sales, and tech team needs in one place.
Clean HTTP endpoints following standard CRUD conventions and status codes.
Create read-only, send-only, or full-admin API keys per microservice.
Receive delivered, read, failed, and incoming message payloads in real time.
Verify webhook authenticity using X-Hub-Signature-256 header validation.
Send array batches of up to 1,000 personalized messages in a single API call.
Create, query, update, and delete Meta message templates programmatically.
Upload high-res PDFs, audio voice notes, images, and videos with automatic CDN caching.
Dispatch native WhatsApp interactive button menus and Flow forms via JSON.
Inspect X-RateLimit-Remaining and X-RateLimit-Reset headers for clean traffic pacing.
Official client libraries with full TypeScript types and error handling.
Explore other solutions that work well for custom rest apis & webhooks teams.
Direct Meta Cloud API BSP onboarding, green tick verification, Tier-4 unlimited message throughput, and enterprise-grade multi-agent operations from one platform.
Drive 98% open rates and 45%+ CTR with targeted WhatsApp bulk broadcasts, automated retargeting drips, personalized variables, and dynamic CTA buttons.
Automate 80% of repetitive customer support, lead qualification, appointment bookings, and FAQ queries 24/7 with zero coding required.
Explore our popular regional hubs for custom rest apis & webhooks.
Answers to common questions about setting up and automating custom rest apis & webhooks with WhatsApp.
Deploy official Meta WhatsApp APIs, automate conversations, and sync customer data in real time.