# SMS API reference | VeloBotix

> Overview of VeloBotix FUN endpoints: SEND_SINGLE, SEND_BULK_SAME, SEND_BULK_DIFFERENT, CHECK_BALANCE.

Source: https://www.velobotix.app/docs/api-reference

Docs

# API reference

## Base URL

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.

Customer API base URL: https://portal.velobotix.app/api.php. Select the action with the FUN query parameter.

```
https://portal.velobotix.app/api.php
```

## Functions

Four FUN values are documented for the public customer API:

FUN

Purpose

Docs

SEND\_SINGLE

Send one SMS (GET or POST)

[/docs/send-sms](https://www.velobotix.app/docs/send-sms)

SEND\_BULK\_SAME

Same message to many numbers

[/docs/bulk-sms](https://www.velobotix.app/docs/bulk-sms)

SEND\_BULK\_DIFFERENT

Personalised messages via msg\_list

[/docs/bulk-sms](https://www.velobotix.app/docs/bulk-sms)

CHECK\_BALANCE

Read account balance

[/docs/balance](https://www.velobotix.app/docs/balance)

## Authentication

POST: HTTP Basic Auth (email + API key). GET single: with\_get=true plus un and up. See Authentication.

## Create account

Sign up in the portal and get your API key — username is your email, password is the key.

[Open portal — get API key](https://portal.velobotix.app)