Stablecoin On/Off-Ramp | 24/7 Institutional FX | Codex FX
Stablecoin on/off-ramps.
Convert USD, EUR, GBP, and other currencies into USDC, USDT, and other stablecoins, with firm wholesale FX rates, institutional liquidity, and settlement in under 30 minutes.
What are you ramping?
Send
USD
1.0 M
Receive
USDC
1,000,000
1.0 M
1 USD = 1USDCLive rate
Illustrative rates. Not Codex pricing.
Settlement Under 30 minutes
Availability 24/7/365
Fees Wholesale, transparent rates
Stablecoins move quickly. Fiat conversion does not.
Stablecoins move at internet speed. Fiat does not.
Every conversion is slowed by bank cut-offs, disconnected providers, opaque spreads, and funds trapped in accounts you do not control.
Codex gives institutions seamless fiat-to-stablecoin and stablecoin-to-fiat conversion with firm rates, local settlement, and 24/7 access.
How on/off-ramps work
Codex sits between your stablecoin balance and local bank rails. You get one counterparty, one contract, and one rate, whichever direction you're going.
01 Request quote
Live two-way rates, refreshed every 15 seconds. Lock one and you see the exact rate on an order confirmation before anything executes.
USD
USDC
02 Send funds
Fiat to a local Codex account, or stablecoins to an onchain address. No balance parked with us in advance. You have 12 hours to fund and settle.
100,000USD
↓
100,000USDC
0xFB0...52c9B
03 Receive assets
We settle on the fastest rail available for that amount and market. Most trades complete the same day, and in real time on instant rails.
order_01K...R1PF
↓
100,000USDC
04 Get billed
Your cost is invoiced transparently and volume dependent. You always know what you pay, and why.
Supported assets
The fiat currencies, stablecoins, and blockchain networks we support today.
Active
USDUS Dollar
MXNMexican Peso
GBPBritish Pound Sterling
USDCUSD Coin
EUREuro
USDTUSD Tether
BRLBrazilian Real
Coming Soon
CLPChilean Peso
COPColombian Peso
TRYTurkish Lira
ARSArgentine Peso
BOBBolivian Boliviano
PENPeruvian Sol
PHPPhilippine Peso
INRIndian Rupee
IDRIndonesian Rupiah
VNDVietnamese Dong
AEDUAE Dirham
PKRPakistani Rupee
Networks
Ethereum · Tron · Solana · Polygon · Codex · Base · Optimism · Arbitrum · Avalanche
EthereumETH
TronTRX
SolanaSOL
PolygonPOL
CodexCODEX
BaseBASE
OptimismOP
ArbitrumARB
AvalancheAVAX
Codex vs. alternatives
Every operator already has a way to get fiat in and out. The question is what it costs you in time, capital, and headcount.
Traditional on/off-ramps
Centralized exchanges
| Feature | Codex | Alternatives |
|---|---|---|
| Liquidity | Institutional. Fills at one price. | Retail. Worse quote at size. |
| Price | One wholesale rate, locked. | Indicative, plus 1 to 5% markup. |
| Speed | Same day. Real time on instant rails. | Fast on card, 1 to 3 days on bank. |
| Coverage | USD, EUR, GBP and many more. | Broad on paper, but route by route. |
| Counterparty Risk | One desk. Nothing on a venue. | Provider holds funds mid-flow. |
| Availability | 24/7/365. Settles off-hours on instant rails. | Settlement in banking hours. |
1B+ in monthly volume
Codex gives us one desk for both directions. We lock a wholesale rate, fund the trade, and the money lands the same day, weekends included, without pre-funding or parking a balance on a venue.
Explore our most popular currency corridors.
From > To
- USDC > USD Hong Kong
- USDT > USD Hong Kong
- USDC > USD Indonesia
- USDT > USD Indonesia
- USD > USDC Indonesia
- ...
FAQ
What is a fiat on-ramp and off-ramp? An on-ramp moves local currency into stablecoins. An off-ramp moves stablecoins back into local currency. Codex handles both directions through a single counterparty, so you convert between fiat and stablecoins like USD, EUR, GBP, USDC, and USDT without stitching providers together.
Which currencies and stablecoins can I move between? The core set is USD, EUR, GBP, USDC, and USDT, with more available. Codex runs direct currency corridors across Latin America, North America, Africa, Asia, and Europe, with local settlement into markets like Hong Kong, Brazil, and Nigeria...
Which blockchain networks are supported? We support USDT and USDC across Ethereum, Tron, Solana, Polygon, Codex, Base, Optimism, Arbitrum, and Avalanche. Corridors vary by asset...
How fast is settlement? The fastest trades settle in under 30 minutes, in real time where instant rails are available. Most trades complete the same day...
Does Codex settle on weekends and outside banking hours? Yes. Codex operates 24/7/365...
Is the rate locked, and how long is it held? You get live two-way rates that refresh every 15 seconds. When you lock one, the exact rate is confirmed...
How does pricing and billing work? You trade on one wholesale rate, locked when you confirm the order...
Do I need to pre-fund an account or hold a balance with Codex? No...
How is this different from a centralized exchange or my current on/off-ramp provider? Three things...
Is there a minimum or maximum trade size? Codex is built for wholesale and institutional flow...
What are your compliance and onboarding requirements? Onboarding and compliance checks are completed...
How do I get started? Book a demo. We will map your corridors, share indicative pricing...