Your favorite CEX, |

exchange infrastructure without the black box.

A central limit order book on Monad featuring deterministic verifiable execution, self-custody, and composable liquidity which other applications can seamlessly integrate with.

Wallet0x71C9…3A9FConnected

Order authorization

MON / USDCBuy

Only this wallet can authorize the order.

your tokens remain yours.

Orders are signed by your wallet, and resting balances remain in your custody at all times.

MON / USDC

Price (USDC)Size (MON)Total (MON)

0.025396,84033,575

0.0253710,26026,735

0.025359,12016,475

0.025337,3557,355

Mid0.02532Spread 0.08%

0.025318,4608,460

0.0252911,78020,240

0.025277,92028,160

0.025255,64033,800

a verifiable order book.

Resting limit orders, swap quotes, and executed events can all be queried directly onchain.

Walletswap request

Crystal Routerbest execution

Order book0.02531

Backstop AMM0.02535

Order book selectedbetter by 0.16%

liquidity other apps can benefit from.

The matching engine is deterministic and trades settle atomically without requiring internal exchange balances.

lightning fast.

Experience responsive onchain markets powered by Monad’s high-performance execution.

zero barriers.

Access is permissionless and does not involve any centralized custodians or privileged intermediaries.

fully onchain.

Order placement, matching, and settlement are all executed on a public ledger via smart contracts.

from intent to settlement.

Follow the lifecycle of an order from when it is first signed to when it is matched and settled onchain.

PhantomConnected wallet

•••

Account 10x71C9…3A9F

MON24,801.20

USDC2,418.64

Crystal orderSignature request

app.crystal.exchangeVerified

Market: MON / USDC
Side: Buy
Limit price: 0.02532
Size: 12,500 MON
Maximum spend: 316.50 USDC
Network fee: < 0.001 MON

Sign transactionTransaction signed

plug into the order book.

Seamlessly integrate with Crystal's live order book data, transparent execution, and hybrid orderbook liquidity while earning a builder fee commission.

Integration Guide GitHub

Crystal routerexact-input swap

01interface ICrystalRouter {02  function swapExactTokensForTokens(03    uint256 amountIn,04    uint256 amountOutMin,05    address[] memory path,06    address to,07    uint256 deadline,08    address referrer09  ) external returns (uint256[] memory amounts);10}1112router.swapExactTokensForTokens(13  amountIn, minOut, path, recipient,14  block.timestamp + 120, referrer15);

Requestmarket MON/USDCside BUYamount 12,500 MONslippage 0.25%

Execution plan

01Query orders and reserves4.1 ms

02Simulate trade outputs2 routes

03Specify order slippagepassed

04Prepare transactionready

Best routeCrystal MON/USDC market0.02531 USDC

0.03%

0.10%

0.30%

0.60%+

low fees by design.

Crystal lets you make the most of every trade with minimal taker fees and generous maker rebates.

Illustrative baseline rates. Crystal's taker fee and maker rebate vary by market.

trade,,and more.

a comparison of exchanges.

While cryptocurrency exchanges may appear similar, the underlying infrastructure and resulting trust assumptions are inherently different.

Capability
Low fees
Self custodial
Capital efficient
Permissionless access
Atomic composability
Native limit orders
Transparent execution
EVM integration

Limited or conditional support

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