> ## Documentation Index
> Fetch the complete documentation index at: https://vaayu.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Home

Sandbox / Testnet

Vaayu is currently available as a sandbox environment for testing. Payments use testnet funds and are executed through a Vaayu test wallet. No real funds are involved.

<Card title="Get Started" icon="rocket-launch">
  Create an API key and send your first payment in minutes.

  <Icon icon="arrow-alt-square-right" /> [QuickStart](https://vaayu.mintlify.site/quickstart)
</Card>

<Card title="API Reference" icon="books">
  Explore every endpoint with examples and request schemas.

  <Icon icon="arrow-alt-square-right" /> [API Reference](https://vaayu.mintlify.site/untitled-page-3)
</Card>

# Stablecoin Payments API

Build USDC payment flows in minutes with a simple REST API.

Send stablecoin payments, track transactions, register webhooks, and check wallet balances without managing blockchain infrastructure.

## Features

* <Icon icon="rocket-launch" /> Send USDC payments
* <Icon icon="lock-hashtag" /> Secure API key authentication
* <Icon icon="box-alt" /> Transaction tracking
* <Icon icon="bell-ring" /> Webhook notification
* <Icon icon="sack-dollar" /> Wallet balance lookup
* <Icon icon="globe" /> Built on Base

## Get Started

Getting started takes only three steps:

1. Create an API key
2. Register a webhook (optional)
3. Send your first payment

[Continue to Quick Start](https://vaayu.mintlify.site/quickstart)

## Available APIs

* Create API Key
* Register Webhook
* Send Payment
* Wallet Balance
* Transaction Status

## Why this API?

Instead of integrating directly with blockchain nodes and smart contracts, you can use a simple REST API to:

* Accept stablecoin payments
* Move USDC between wallets
* Receive payment notifications
* Monitor transaction status