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

# Introduction

> Rails is a Sui-native settlement infrastructure for converting stablecoins into local fiat in emerging markets.

Rails is a Sui-native settlement infrastructure for converting stablecoins into local fiat in emerging markets. It is built for fintechs, consumer apps, DeFi protocols, and cross-border payment systems that need predictable payout behavior and a clear settlement boundary.

Rails supports EVM integration, but settlement is executed on Sui. On-chain escrow and liquidity-provider rails handle payout, while the product surface stays focused on offramp and settlement orchestration.

## What Rails is for

* Stablecoin-to-fiat offramping
* B2B integrator payout flows
* API-driven settlement workflows
* Product systems that need an auditable Sui settlement core

## What Rails is not for

* General-purpose wallet hosting
* Consumer trading UI
* Card issuance or wallet management
* Custody of user balances outside the settlement flow

## Core supported corridors

* BRL
* KES
* NGN
* UGX
* TZS
* MWK

## Core supported assets

* Native SUI
* USDC
* USDT

## Proof of work

Tapp is the proof of work for how you can build a product system on Rails.