# Developer documentation | VeloBotix

> VeloBotix SMS API docs: authentication, SEND_SINGLE, bulk SMS, balance, and language examples for Sri Lanka.

Source: https://www.velobotix.app/docs

# Developer documentation

VeloBotix is a Sri Lankan SMS gateway and SMS API platform that enables businesses and developers to send transactional, OTP, bulk and application-generated SMS messages.

Base URL `https://portal.velobotix.app/api.php`. Authenticate with HTTP Basic Auth or GET `un`/`up`.

## Getting started

-   [Getting started](https://www.velobotix.app/docs/getting-started)
-   [Authentication](https://www.velobotix.app/docs/authentication)
-   [Send SMS](https://www.velobotix.app/docs/send-sms)
-   [Bulk SMS](https://www.velobotix.app/docs/bulk-sms)
-   [OTP](https://www.velobotix.app/docs/otp)
-   [Sender ID](https://www.velobotix.app/docs/sender-id)
-   [Delivery reports](https://www.velobotix.app/docs/delivery-reports)
-   [Error handling](https://www.velobotix.app/docs/error-codes)
-   [Rate limits](https://www.velobotix.app/docs/rate-limits)
-   [Balance](https://www.velobotix.app/docs/balance)

## API reference

-   [API reference](https://www.velobotix.app/docs/api-reference)

## Languages

-   [PHP](https://www.velobotix.app/docs/php)
-   [Node.js](https://www.velobotix.app/docs/nodejs)
-   [Python](https://www.velobotix.app/docs/python)
-   [Java](https://www.velobotix.app/docs/java)
-   [Laravel](https://www.velobotix.app/docs/laravel)
-   [JavaScript](https://www.velobotix.app/docs/javascript)

## Create an account

Open the portal for an API key, or review LKR credit packs before you integrate.

[Open portal](https://portal.velobotix.app)[SMS pricing](https://www.velobotix.app/sms-pricing-sri-lanka)