Crypto and exchanges
On-ramp and off-ramp in reais for crypto and exchanges
Deposit and withdraw in reais via PIX, settling in USDC or USDT on the network of your choice — with locked quotes.
Exchanges and crypto products live on a reliable on-ramp and off-ramp: the user needs to get in with reais simply and cash out without friction. Astron Pay delivers both sides via PIX, with conversion to stablecoins across multiple networks.
The on-ramp and off-ramp challenges
Reliable on-ramp
The deposit in reais needs to land fast and turn into crypto without friction — otherwise the user gives up on the first try.
Off-ramp without a queue
The withdrawal back to reais needs to be instant. Slow off-ramp erodes trust in the exchange.
Price risk
Between quoting and settling, the price can move. Without a locked quote, the margin disappears.
Multiple networks
Each user wants the cheapest network or the one they already use. Fixing a single network drives customers away.
How Astron solves it
On-ramp via PIX
The user pays in reais via PIX and you credit USDC or USDT to the defined wallet, confirmed via webhook.
Off-ramp via PIX
Convert stablecoin back to reais and pay to the user's PIX key, with the same confirmation standard.
Locked quote
Each order uses a quote locked for 30 seconds, so the price does not change between quoting and settling.
USDC and USDT across networks
Settle in USDC or USDT on Solana, Ethereum, Polygon and Tron — the network is chosen per order.
Why Astron
- Fees from R$ 0.15 per PIX
- Confirmation in seconds, 24/7
- Cash-in and cash-out in one API
- USDC and USDT across networks
- Unlimited sandbox
- Webhooks and reconciliation included
Frequently asked questions
Which currencies and networks do you support?
USDC and USDT, on Solana, Ethereum, Polygon and Tron. The network is chosen per order.
Is the quote locked?
Yes. You request the quote, receive the exact amount and it stays locked for 30 seconds — the order is created at that price.
Can I do on-ramp and off-ramp in the same API?
Yes. Cash-in (on-ramp) and cash-out (off-ramp) use the same standard of quotes, webhooks and reconciliation.
Ready to offer on-ramp and off-ramp in reais?
Talk to the team or start integrating today in the sandbox.