Route Providers

Configure and optimize route providers for cross-chain interactions

Route Providers

Trails integrates with multiple liquidity sources and bridge providers to find the best routes for your cross-chain transactions. You can specify preferred providers for swapping and bridging, or let Trails automatically select the optimal ones.

Available Providers

• AUTO (recommended): Automatically selects the best provider based on the route
• RELAY: Uses Relay for fast bridging operations
• CCTP: Uses Circle’s Cross-Chain Transfer Protocol for USDC transfers
• SUSHI: Uses SushiSwap for on-chain swaps
• ZEROX: Uses 0x protocol for DEX aggregation
• LZ_OFT: Uses LayerZero Omnichain Fungible Token bridge
• LZ_STARGATE: Uses LayerZero Stargate for native asset bridging
• GASZIP: Uses Gas.zip for gas-optimized routing

Configuration

Widget-level configuration

Specify route providers on any focused component:

import { Swap } from '0xtrails/widget'

<Swap
  apiKey="YOUR_API_KEY"
  swapProvider="SUSHI"    // Provider for on-chain swaps
  bridgeProvider="RELAY"  // Provider for cross-chain bridging
  from={{ currency: "USDC", chain: "ethereum" }}
  to={{ currency: "USDC", chain: "base" }}
/>

Hook-level configuration

When using the useQuote hook, you can specify both swap and bridge providers:

import { useQuote, RouteProvider } from '0xtrails'

const { quote, send } = useQuote({
  walletClient,
  from: {
    token: 'USDC',
    chain: 'ethereum',
    amount: '1', // human-readable USDC amount
  },
  to: {
    token: 'USDC',
    chain: 'base',
  },
  swapProvider: 'AUTO',    // Optional: defaults to AUTO
  bridgeProvider: 'RELAY', // Optional: specify preferred bridge
})

Provider Details

AUTO (recommended)

The AUTO setting lets Trails intelligently select the best provider for each transaction based on cost, speed, liquidity, and reliability. Use this unless you have a specific reason to lock to a particular provider.

<Swap
  apiKey="YOUR_API_KEY"
  swapProvider="AUTO"    // Default
  bridgeProvider="AUTO"  // Default
/>

Relay

Relay provides fast cross-chain transfers through an intent-based filler network. Fillers front the destination execution and settle asynchronously.

• Fast finality on most routes
• Competitive fees
• Good coverage across major EVM chains

<Swap apiKey="YOUR_API_KEY" bridgeProvider="RELAY" />

CCTP

Circle’s Cross-Chain Transfer Protocol enables native USDC bridging without wrapped tokens. There is no slippage — 1 USDC in equals 1 USDC out.

• Available on Ethereum, Base, Arbitrum, Optimism, Polygon, Avalanche
• No wrapped USDC; transfers use Circle’s burn-and-mint mechanism
• Best choice when users need exact USDC amounts at destination

<Swap
  apiKey="YOUR_API_KEY"
  bridgeProvider="CCTP"
  to={{ currency: "USDC" }}
/>

SushiSwap

SushiSwap provides on-chain swap routing using its V3 concentrated liquidity pools across multiple EVM chains.

• Available on most major chains
• Works well when deep Sushi liquidity exists for the token pair

<Swap apiKey="YOUR_API_KEY" swapProvider="SUSHI" />

0x Protocol

0x aggregates liquidity across multiple DEXs to find optimal swap rates. It optimizes for both price and gas.

<Swap apiKey="YOUR_API_KEY" swapProvider="ZEROX" />

LayerZero (LZ_OFT / LZ_STARGATE)

LayerZero is an omnichain messaging protocol that powers two distinct bridge providers:

LZ_OFT — Omnichain Fungible Token bridge. Used for tokens that have native OFT deployments across chains (no wrapping, direct cross-chain transfers). Live since late February 2025.

LZ_STARGATE — Stargate protocol routes native assets across chains using a unified liquidity pool model, minimizing slippage on stable assets.

• Both providers expand coverage to chains and tokens not served by Relay or CCTP
• AUTO will select the appropriate LayerZero route when it is optimal

<Swap apiKey="YOUR_API_KEY" bridgeProvider="LZ_OFT" />    // For OFT-enabled tokens
<Swap apiKey="YOUR_API_KEY" bridgeProvider="LZ_STARGATE" /> // For Stargate native asset routes

Gas.zip

Gas.zip is a gas-optimized routing provider that reduces the total gas cost of cross-chain transactions. Shipping with v1.5.

• Useful when minimizing gas costs is the priority over speed
• AUTO will select Gas.zip when it provides the best cost efficiency

<Swap apiKey="YOUR_API_KEY" bridgeProvider="GASZIP" />

Best Practices

1. Use AUTO by default: Let Trails optimize the route for you.
2. USDC transfers: Use CCTP for guaranteed 1:1 native USDC bridging.
3. Fast bridging: Use RELAY when speed is the priority.
4. Gas-sensitive routes: Use GASZIP or leave as AUTO to minimize fees.
5. Separate swap and bridge: swapProvider controls same-chain DEX routing; bridgeProvider controls the cross-chain transport layer.
6. Fallback support: Set swapProviderFallback: true or bridgeProviderFallback: true to automatically fall back to another provider if your preferred one is unavailable.