SMS API Sri Lanka v3
Integrate reliable SMS into your app in minutes with v3 REST API and 8 SDKs.
The TXTMSG v3 REST API lets you send, schedule, and track SMS messages programmatically from your application. With 140ms average latency and 99.99% uptime, you can integrate reliable SMS into any stack in minutes.
How the SMS API Works
- Get your API credentials — Sign up and retrieve your API key from the dashboard.
- Choose your integration — Use one of 8 SDKs or call the REST API directly with cURL.
- Send your first message — Complimentary trial credits and demo sender ID pre-configured.
- Scale up — Move to production, register branded sender ID, and use webhooks.
API Features for Developers
RESTful Endpoints
Clean, RESTful design with JSON request/response. Send SMS, check delivery status, manage sender IDs — all via HTTP.
SDKs in 8 Languages
Official SDKs for PHP, Python, Node.js, Java, Go, Ruby, Flutter, and Laravel. Browse SDKs ->
Webhook Delivery Callbacks
Receive real-time delivery status updates via HTTP POST webhooks. Know the moment each message is delivered.
Sub-Second OTP Delivery
Time-sensitive OTP messages routed through fastest carrier path with auto retry. See OTP features ->
Bulk & Batch Sending
Send to thousands of recipients in a single API call. See bulk SMS ->
Comprehensive Documentation
Full API reference with request/response examples, error codes, and best practices. Visit docs ->
API Pricing
| Plan | Rate Limit | Webhooks |
|---|---|---|
| Starter | 60 req/min | Yes |
| Growth | 120 req/min | Yes |
| Business | 300 req/min | Yes |
| Enterprise | Custom | Yes |
Start Building with the TXTMSG API
Free trial credits and demo sender ID — no credit card required.
Create Free AccountRead API DocsView Pricing
Get started with SMS API Sri Lanka v3 today. No hidden fees, no long-term contracts.
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SMS API Sri Lanka — REST API & SDKs for Developers
Integrate SMS into your app with the TXTMSG v3 REST API. 8 SDKs (PHP, Python, Node.js, Java, Go, Ruby, Flutter, Laravel), webhooks, and 99.99% uptime.