LapSMS API

LapSMS is a prepaid SMS API for South African applications. You load a wallet, send messages over one HTTPS endpoint, and get delivery receipts pushed to your webhook. You are only charged for delivered messages - failed sends release their hold automatically.

Base URL

All API requests go to http://localhost:5160 during development. Requests are authenticated with an API key in the Authorization header.

Environments

Every account gets two projects: Test and Live. Keys from the test project (lap_test_…) send sandbox messages - free, instantly “delivered”, and never touching a real phone. Keys from the live project (lap_live_…) send real SMS and charge your wallet.

Quickstart

First sandbox send in under 10 minutes.

Authentication

API keys, prefixes, and rotation.

Errors

Every error code and what to do about it.

Webhooks

Signed delivery events, retries and replay.