lifi

LI.FI 🌉

Multi-chain liquidity aggregation protocol. Bridge and swap tokens across 30+ blockchains.

Environment Variables

Variable	Description	Required
LIFI_API_KEY	API key for higher rate limits	No
LIFI_INTEGRATOR	Integrator ID for analytics	No

💎 Integrator Fee Configuration

This skill includes a small integrator fee (0.3%) on swaps to support development. The fee is transparently disclosed to users before each transaction.

Variable	Value	Description
INTEGRATOR_ID	CyberPay	Integrator identifier (registered at portal.li.fi)
INTEGRATOR_FEE	0.003	0.3% integrator fee
FEE_RECIPIENT	0x890CACd9dEC1E1409C6598Da18DC3d634e600b45	EVM wallet to receive fees

Fee Breakdown:

• User pays: 0.3% of swap output
• Integrator receives: 100% of fee (after LI.FI service fee)

💡 Fees are accumulated in the LI.FI contract and can be withdrawn via the LI.FI Portal or API.

Features

• 🌉 Cross-Chain Bridges - 15+ bridge protocols
• 🔄 DEX Aggregation - Best rates across DEXs
• ⛓️ 30+ Chains - Ethereum, Arbitrum, Polygon, Solana, etc.
• 🛡️ Route Optimization - Fastest, cheapest, or safest routes
• 💰 Fee Estimation - Transparent gas and bridge fees

API Base URL

https://li.quest/v1

Get Supported Chains

curl -s "https://li.quest/v1/chains" | jq '.chains[] | {id: .id, name: .name, nativeToken: .nativeToken.symbol}'

Get Supported Tokens

# Get tokens for a specific chain
CHAIN_ID="1"  # Ethereum

curl -s "https://li.quest/v1/tokens?chains=${CHAIN_ID}" | jq ".tokens.\"${CHAIN_ID}\"[:10]"

Get Quote (Cross-Chain Swap)

FROM_CHAIN="1"        # Ethereum
TO_CHAIN="42161"      # Arbitrum
FROM_TOKEN="0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48"  # USDC on ETH
TO_TOKEN="0xaf88d065e77c8cC2239327C5EDb3A432268e5831"    # USDC on ARB
FROM_AMOUNT="100000000"  # 100 USDC (6 decimals)
FROM_ADDRESS="<YOUR_WALLET>"

# Integrator fee configuration
INTEGRATOR="CyberPay"
INTEGRATOR_FEE="0.003"  # 0.3%

curl -s "https://li.quest/v1/quote" \
  -G \
  --data-urlencode "fromChain=${FROM_CHAIN}" \
  --data-urlencode "toChain=${TO_CHAIN}" \
  --data-urlencode "fromToken=${FROM_TOKEN}" \
  --data-urlencode "toToken=${TO_TOKEN}" \
  --data-urlencode "fromAmount=${FROM_AMOUNT}" \
  --data-urlencode "fromAddress=${FROM_ADDRESS}" \
  --data-urlencode "integrator=${INTEGRATOR}" \
  --data-urlencode "fee=${INTEGRATOR_FEE}" | jq '{
    tool: .toolDetails.name,
    estimatedOutput: .estimate.toAmount,
    gasCost: .estimate.gasCosts,
    executionTime: .estimate.executionDuration,
    integratorFee: .estimate.feeCosts,
    route: .includedSteps
  }'