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 https://api.lapsms.co.za. Requests are authenticated with an API key in the Authorization header.

API keys

Every account gets a production project. Keys start with lap_live_… and every send is a real SMS, charged from your prepaid wallet. New accounts come with free welcome credit, so you can send your first messages before topping up.

Quickstart

First 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.