Moonxi
Book a diagnostic
← Case studies Case · HelloCrypto · Financial

A crypto on-off ramp: the real goes in and out through the bank.

Buying and selling crypto with money moving in and out in reais, on the banking rails.

Built in partnership with a Silicon Valley veteran
Context

Real money on both sides of the transaction.

An on-off ramp is the bridge between the real — Brazil's currency — and crypto: the user pays in reais and receives in a wallet, or sells and is paid at the bank. The quote, the fee and the balance have to agree every single time. Being one cent out breaks trust in the whole platform.

What was built

Moonxi built the platform, and runs it.

The operating backend

Quote, fee and balance, deterministic and tested. Arithmetic is arithmetic.

Banking and liquidity integrations

The real moves in and out on the banking rails; the crypto settles on the other side.

Infrastructure on AWS

Infrastructure as code, with the cost measured and the bill auditable line by line.

Architecture

From the real to the wallet, and back.

bank Money in and out in reais
engine Deterministic quote and fee, reconciled balance
liquidity Buying and selling crypto
wallet The user receives it where they chose
What runs today

A continuous operation.

The platform is live at hellocrypto.app. Moonxi runs the backend and the infrastructure, tracks the cost, and answers for what is running.

Real money inside your system?

It starts with a diagnostic: two weeks, one document, one fixed quote.

Book a diagnostic →