On-chain decentralized exchange with gRPC, JSON-RPC, ZAP protocol, and FPGA-accelerated matching.

DEX — Decentralized Exchange

The Lux DEX is an on-chain matching engine with multiple transport layers (gRPC, JSON-RPC, ZAP, WebSocket) and optional FPGA acceleration. It provides the decentralized venue for the smart order router.

Features

CLOB matching: Central limit order book with price-time priority

Multi-transport: gRPC, JSON-RPC, WebSocket, ZAP (zero-copy binary)

FPGA acceleration: Optional AMD Versal / AWS F2 FPGA matching

DAG consensus: Custom DAG-based consensus for order finality

On-chain settlement: Atomic settlement on Lux C-Chain

Cross-chain bridge: Bridge assets via MPC threshold signatures

Oracle integration: Pyth, Chainlink, Alpaca price feeds

Risk engine: Real-time margin and liquidation management

Architecture

Clients -> [gRPC / JSON-RPC / ZAP / WebSocket]
                          |
                    Order Router
                          |
                  +-------+-------+
                  |               |
           [CPU Matcher]   [FPGA Matcher]
                  |               |
                  +-------+-------+
                          |
                   Clearing House
                          |
                  +-------+-------+
                  |       |       |
              Funding  Margin  Liquidation
                          |
                   On-chain Settlement
                          |
                    Lux C-Chain

JSON-RPC API

POST /rpc
{
  "jsonrpc": "2.0",
  "method": "dex.submitOrder",
  "params": {
    "symbol": "LUX-USDC",
    "side": "buy",
    "type": "limit",
    "quantity": 100,
    "price": 12.50,
    "account_id": "acct-123"
  },
  "id": 1
}

Available Methods

Method	Description
`dex.submitOrder`	Submit a new order
`dex.cancelOrder`	Cancel an existing order
`dex.getOrderBook`	Get order book snapshot
`dex.getMarkets`	List available markets
`dex.getTrades`	Get recent trades
`dex.getPositions`	Get account positions

Products

Product	Description
Spot	Immediate settlement spot trading
Perpetuals	Perpetual futures with funding rates
Margin	Isolated and cross margin trading
Options	European-style options (planned)
Vaults	Automated yield strategies
Lending	Peer-to-pool lending markets
Staking	LUX and LP token staking

Source

Repository: luxfi/dex

Language: Go

Key packages: pkg/lx (core engine), pkg/grpc, pkg/fpga, pkg/consensus, pkg/price

SDK: sdk/go/client.go (gRPC client)

DEX