Endpoint Specifications

This page provides concise, action-oriented documentation for the core LI.FI API endpoints that AI agents need.

Base URL

https://li.quest/v1

All endpoints use this base URL. Authentication via x-lifi-api-key header is optional but recommended for higher rate limits.

GET /chains

Action: Retrieve all supported blockchain networks.

Request

curl "https://li.quest/v1/chains"

Parameters

Parameter	Type	Required	Description
`chainTypes`	string	No	Filter by type: `EVM`, `SVM`, `UTXO`, `MVM` (comma-separated)

Response

{
  "chains": [
    {
      "id": 1,
      "key": "eth",
      "chainType": "EVM",
      "name": "Ethereum",
      "coin": "ETH",
      "mainnet": true,
      "logoURI": "https://raw.githubusercontent.com/lifinance/types/main/src/assets/icons/chains/ethereum.svg",
      "tokenlistUrl": "https://gateway.ipfs.io/ipns/tokens.uniswap.org",
      "multicallAddress": "0xcA11bde05977b3631167028862bE2a173976CA11",
      "metamask": {
        "chainId": "0x1",
        "blockExplorerUrls": ["https://etherscan.io/"],
        "chainName": "Ethereum Mainnet",
        "nativeCurrency": { "name": "ETH", "symbol": "ETH", "decimals": 18 },
        "rpcUrls": ["https://mainnet.infura.io/v3/"]
      },
      "nativeToken": {
        "address": "0x0000000000000000000000000000000000000000",
        "chainId": 1,
        "symbol": "ETH",
        "decimals": 18,
        "name": "ETH",
        "coinKey": "ETH",
        "logoURI": "https://raw.githubusercontent.com/trustwallet/assets/master/blockchains/ethereum/assets/0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2/logo.png",
        "priceUSD": "2923.27"
      }
    }
    // ... 58 chains total
  ]
}

Key Fields

Field	Use
`id`	Chain ID for all other API calls
`key`	Short identifier (e.g., “eth”, “arb”, “pol”)
`chainType`	EVM, SVM (Solana), UTXO (Bitcoin), MVM (Sui)
`mainnet`	true for production chains
`nativeToken`	Gas token with price
`metamask`	Chain config for wallet connection

GET /tokens

Action: Retrieve tokens available on specified chains.

Request

curl "https://li.quest/v1/tokens?chains=1,42161"

Parameters

Parameter	Type	Required	Description
`chains`	string	Yes	Comma-separated chain IDs

Response

{
  "tokens": {
    "1": [
      {
        "address": "0x0000000000000000000000000000000000000000",
        "chainId": 1,
        "symbol": "ETH",
        "decimals": 18,
        "name": "ETH",
        "coinKey": "ETH",
        "logoURI": "https://raw.githubusercontent.com/trustwallet/assets/master/blockchains/ethereum/assets/0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2/logo.png",
        "priceUSD": "2923.27"
      },
      {
        "address": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
        "chainId": 1,
        "symbol": "USDC",
        "decimals": 6,
        "name": "USD Coin",
        "coinKey": "USDC",
        "logoURI": "https://raw.githubusercontent.com/trustwallet/assets/master/blockchains/ethereum/assets/0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48/logo.png",
        "priceUSD": "0.999606",
        "tags": ["stablecoin"]
      }
      // ... hundreds more tokens per chain
    ],
    "42161": [
      // ... tokens for Arbitrum
    ]
  }
}

Key Fields

Field	Use
`address`	Token contract address (use in quote)
`decimals`	For converting human amounts to smallest units
`priceUSD`	Current USD price
`coinKey`	Canonical identifier across chains
`tags`	Categories like “stablecoin”

Native Token Address

Native tokens (ETH, MATIC, etc.) use: 0x0000000000000000000000000000000000000000

GET /quote

Action: Get a transfer quote with ready-to-execute transaction data.

Request

curl "https://li.quest/v1/quote?fromChain=1&toChain=42161&fromToken=USDC&toToken=USDC&fromAmount=10000000&fromAddress=0x..."

Parameters

Parameter	Type	Required	Description
`fromChain`	number	Yes	Source chain ID
`toChain`	number	Yes	Destination chain ID
`fromToken`	string	Yes	Source token address or symbol
`toToken`	string	Yes	Destination token address or symbol
`fromAmount`	string	Yes	Amount in smallest unit
`fromAddress`	string	Yes	Sender wallet address
`toAddress`	string	No	Recipient (defaults to fromAddress)
`slippage`	number	No	Max slippage (default: 0.005 = 0.5%)
`order`	string	No	`FASTEST`, `CHEAPEST`
`bridges`	string	No	Allowed bridges (comma-separated)
`exchanges`	string	No	Allowed DEXs (comma-separated)
`denyBridges`	string	No	Excluded bridges
`denyExchanges`	string	No	Excluded DEXs
`maxPriceImpact`	number	No	Max price impact (e.g., 0.05 = 5%)

Response

{
  "type": "lifi",
  "id": "9f32864e-d704-46c1-874e-20f492c0ce77:0",
  "tool": "across",
  "toolDetails": {
    "key": "across",
    "name": "AcrossV4",
    "logoURI": "https://raw.githubusercontent.com/lifinance/types/main/src/assets/icons/bridges/across.svg"
  },
  "action": {
    "fromToken": {
      "address": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
      "chainId": 1,
      "symbol": "USDC",
      "decimals": 6,
      "name": "USD Coin",
      "coinKey": "USDC",
      "logoURI": "https://...",
      "priceUSD": "0.999606",
      "tags": ["stablecoin"]
    },
    "fromAmount": "10000000",
    "toToken": {
      "address": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "chainId": 42161,
      "symbol": "USDC",
      "decimals": 6,
      "name": "USD Coin",
      "coinKey": "USDC",
      "logoURI": "https://...",
      "priceUSD": "0.999606",
      "tags": ["stablecoin"]
    },
    "fromChainId": 1,
    "toChainId": 42161,
    "slippage": 0.001,
    "fromAddress": "0x552008c0f6870c2f77e5cC1d2eb9bdff03e30Ea0",
    "toAddress": "0x552008c0f6870c2f77e5cC1d2eb9bdff03e30Ea0"
  },
  "estimate": {
    "tool": "across",
    "approvalAddress": "0x1231DEB6f5749EF6cE6943a275A1D3E7486F4EaE",
    "toAmountMin": "9965731",
    "toAmount": "9965731",
    "fromAmount": "10000000",
    "feeCosts": [
      {
        "name": "LIFI Fixed Fee",
        "description": "Fixed LIFI fee, independent of any other fee",
        "token": { /* full token object */ },
        "amount": "25000",
        "amountUSD": "0.0250",
        "percentage": "0.0025",
        "included": true,
        "feeSplit": { "integratorFee": "0", "lifiFee": "25000" }
      }
      // ... additional fee items
    ],
    "gasCosts": [
      {
        "type": "SEND",
        "price": "65729222",
        "estimate": "220266",
        "limit": "286346",
        "amount": "14477912813052",
        "amountUSD": "0.0423",
        "token": { /* native token object */ }
      }
    ],
    "executionDuration": 4,
    "fromAmountUSD": "9.9961",
    "toAmountUSD": "9.9618"
  },
  "includedSteps": [
    {
      "id": "e1c87be5-80be-4e2d-8c96-a6492566a739",
      "type": "protocol",
      "action": { /* step action */ },
      "estimate": { /* step estimate */ },
      "tool": "feeCollection",
      "toolDetails": { /* tool info */ }
    },
    {
      "id": "529839e7-a048-4abe-99ad-d650a0fe469e",
      "type": "cross",
      "action": { /* step action */ },
      "estimate": { /* step estimate */ },
      "tool": "across",
      "toolDetails": { /* tool info */ }
    }
  ],
  "integrator": "lifi-api",
  "transactionRequest": {
    "value": "0x0",
    "to": "0x1231DEB6f5749EF6cE6943a275A1D3E7486F4EaE",
    "data": "0x1794958f...",
    "from": "0x552008c0f6870c2f77e5cC1d2eb9bdff03e30Ea0",
    "chainId": 1,
    "gasPrice": "0x3eaf2c6",
    "gasLimit": "0x45e8a"
  },
  "transactionId": "0x1695bded7c1634dce4a200bdec72be0ed6cc5f7153ec2dc832b271d790eb00c8"
}

See the Five-Call Recipe for the complete untruncated response.

Key Fields

Field	Use
`tool`	Bridge/DEX used (optional for status check, speeds up response)
`estimate.toAmount`	Expected output amount
`estimate.toAmountMin`	Minimum guaranteed (slippage-protected)
`estimate.approvalAddress`	Spender address for ERC20 approval
`estimate.feeCosts`	Detailed fee breakdown
`estimate.gasCosts`	Gas cost estimates
`includedSteps`	Each step in multi-step transfers
`transactionRequest`	Ready-to-sign transaction object
`transactionId`	Unique ID for tracking

Constraints

fromAmount must be in smallest unit (e.g., 6 decimals for USDC)
slippage is a decimal (0.005 = 0.5%, not 0.5)
Quote expires after ~60 seconds

GET /status

Action: Check the status of a cross-chain transfer.

Request

curl "https://li.quest/v1/status?txHash=0x..."

Parameters

Parameter	Type	Required	Description
`txHash`	string	Yes	Source chain transaction hash
`fromChain`	number	No	Source chain ID (recommended for speed)
`toChain`	number	No	Destination chain ID
`bridge`	string	No	Bridge tool from quote

Only txHash is required. Providing fromChain significantly speeds up the response.

Response

{
  "transactionId": "0x1695bded7c1634dce4a200bdec72be0ed6cc5f7153ec2dc832b271d790eb00c8",
  "sending": {
    "txHash": "0x1695bded7c1634dce4a200bdec72be0ed6cc5f7153ec2dc832b271d790eb00c8",
    "txLink": "https://etherscan.io/tx/0x1695bded7c1634dce4a200bdec72be0ed6cc5f7153ec2dc832b271d790eb00c8",
    "chainId": 1,
    "amount": "10000000",
    "token": {
      "address": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
      "chainId": 1,
      "symbol": "USDC",
      "decimals": 6,
      "name": "USD Coin",
      "coinKey": "USDC",
      "logoURI": "https://...",
      "priceUSD": "0.999606"
    },
    "amountUSD": "9.9961",
    "gasPrice": "65729222",
    "gasUsed": "220266",
    "gasToken": { /* native token */ },
    "gasAmount": "14477912813052",
    "gasAmountUSD": "0.0423",
    "timestamp": 1737625200
  },
  "receiving": {
    "txHash": "0xdef456789abc...",
    "txLink": "https://arbiscan.io/tx/0xdef456789abc...",
    "chainId": 42161,
    "amount": "9965731",
    "token": {
      "address": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "chainId": 42161,
      "symbol": "USDC",
      "decimals": 6,
      "name": "USD Coin",
      "coinKey": "USDC",
      "logoURI": "https://...",
      "priceUSD": "0.999606"
    },
    "amountUSD": "9.9618",
    "timestamp": 1737625204
  },
  "lifiExplorerLink": "https://explorer.li.fi/tx/0x1695bded7c1634dce4a200bdec72be0ed6cc5f7153ec2dc832b271d790eb00c8",
  "fromAddress": "0x552008c0f6870c2f77e5cC1d2eb9bdff03e30Ea0",
  "toAddress": "0x552008c0f6870c2f77e5cC1d2eb9bdff03e30Ea0",
  "tool": "across",
  "status": "DONE",
  "substatus": "COMPLETED"
}

Key Fields

Field	Use
`status`	Main status (see table below)
`substatus`	Detailed outcome
`sending.txHash`	Source chain transaction
`receiving.txHash`	Destination chain transaction
`lifiExplorerLink`	Link to LI.FI explorer
`receiving.amount`	Actual received amount

Status Values

Status	Substatus	Meaning
`NOT_FOUND`	-	Transaction not indexed yet
`PENDING`	-	Transfer in progress
`DONE`	`COMPLETED`	Success - received requested token
`DONE`	`PARTIAL`	Success - received different token
`DONE`	`REFUNDED`	Failed - tokens returned to sender
`FAILED`	various	Permanent failure (see substatus)

POST /advanced/routes

Action: Get multiple route options for a transfer.

Request

curl -X POST "https://li.quest/v1/advanced/routes" \
  -H "Content-Type: application/json" \
  -d '{
    "fromChainId": 1,
    "toChainId": 42161,
    "fromTokenAddress": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
    "toTokenAddress": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
    "fromAmount": "10000000",
    "fromAddress": "0x..."
  }'

Parameters (JSON Body)

Parameter	Type	Required	Description
`fromChainId`	number	Yes	Source chain ID
`toChainId`	number	Yes	Destination chain ID
`fromTokenAddress`	string	Yes	Source token address
`toTokenAddress`	string	Yes	Destination token address
`fromAmount`	string	Yes	Amount in smallest unit
`fromAddress`	string	Yes	Sender address
`options`	object	No	Additional options

Response

{
  "routes": [
    {
      "id": "0x...",
      "steps": [...],
      "toAmount": "9900000",
      "toAmountMin": "9850000",
      "gasCostUSD": "5.23",
      "tags": []
    }
  ]
}

When to Use

Need multiple route options
User wants to compare bridges
Complex multi-hop transfers

POST /advanced/stepTransaction

Action: Get transaction data for a specific route step.

Request

curl -X POST "https://li.quest/v1/advanced/stepTransaction" \
  -H "Content-Type: application/json" \
  -d '{ "step": { ... } }'

Parameters

Parameter	Type	Required	Description
`step`	object	Yes	Step object from routes response

Response

Returns the step with transactionRequest populated.

When to Use

After /advanced/routes to get transaction data for each step.

GET /connections

Action: Get all possible token connections from/to a chain.

Request

curl "https://li.quest/v1/connections?fromChain=1&toChain=42161"

Parameters

Parameter	Type	Required	Description
`fromChain`	number	No*	Source chain ID
`toChain`	number	No*	Destination chain ID
`fromToken`	string	No	Filter by source token
`toToken`	string	No	Filter by destination token

*At least one of fromChain or toChain required.

Response

{
  "connections": [
    {
      "fromChainId": 1,
      "toChainId": 42161,
      "fromTokens": [
        {
          "address": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
          "chainId": 1,
          "symbol": "USDC",
          "decimals": 6,
          "name": "USD Coin",
          "coinKey": "USDC",
          "logoURI": "https://...",
          "priceUSD": "0.999606"
        }
        // ... more tokens that can be sent
      ],
      "toTokens": [
        {
          "address": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
          "chainId": 42161,
          "symbol": "USDC",
          "decimals": 6,
          "name": "USD Coin",
          "coinKey": "USDC",
          "logoURI": "https://...",
          "priceUSD": "0.999606"
        }
        // ... more tokens that can be received
      ]
    }
  ]
}

Key Fields

Field	Use
`fromChainId`	Source chain
`toChainId`	Destination chain
`fromTokens`	Tokens that can be sent
`toTokens`	Tokens that can be received

When to Use

Check if a route is possible before quoting
Discover available destination tokens
Build token selection UI

GET /tools

Action: Get available bridges and exchanges.

Request

curl "https://li.quest/v1/tools"

Response

{
  "bridges": [
    {
      "key": "across",
      "name": "AcrossV4",
      "logoURI": "https://raw.githubusercontent.com/lifinance/types/main/src/assets/icons/bridges/across.svg",
      "supportedChains": [
        { "fromChainId": 1, "toChainId": 42161 },
        { "fromChainId": 1, "toChainId": 10 },
        { "fromChainId": 1, "toChainId": 137 }
        // ... more chain pairs
      ]
    },
    {
      "key": "stargate",
      "name": "Stargate",
      "logoURI": "https://raw.githubusercontent.com/lifinance/types/main/src/assets/icons/bridges/stargate.png",
      "supportedChains": [
        { "fromChainId": 1, "toChainId": 42161 },
        { "fromChainId": 1, "toChainId": 43114 }
        // ... more chain pairs
      ]
    }
    // ... 27 bridges total
  ],
  "exchanges": [
    {
      "key": "uniswap",
      "name": "Uniswap V3",
      "logoURI": "https://raw.githubusercontent.com/lifinance/types/main/src/assets/icons/exchanges/uniswap.png",
      "supportedChains": [1, 42161, 10, 137, 8453]
    },
    {
      "key": "1inch",
      "name": "1inch",
      "logoURI": "https://raw.githubusercontent.com/lifinance/types/main/src/assets/icons/exchanges/oneinch.png",
      "supportedChains": [1, 42161, 10, 137, 8453, 43114]
    }
    // ... 31 exchanges total
  ]
}

Key Fields

Field	Use
`bridges[].key`	Use in `allowBridges` / `denyBridges`
`bridges[].supportedChains`	Check if bridge supports your chain pair
`exchanges[].key`	Use in `allowExchanges` / `denyExchanges`
`exchanges[].supportedChains`	Chains where DEX is available

When to Use

Filter routes by specific bridges/exchanges
Show available tools to users
Validate bridge/exchange selection

Quick Reference

Endpoint	Method	Purpose
`/chains`	GET	List supported chains
`/tokens`	GET	Get tokens for chains
`/quote`	GET	Get quote with tx data
`/status`	GET	Check transfer status
`/advanced/routes`	POST	Get multiple route options
`/advanced/stepTransaction`	POST	Get tx data for route step
`/connections`	GET	Check route availability
`/tools`	GET	List bridges and exchanges

Five-Call Recipe - Complete workflow
Schemas - Detailed type definitions
Error Playbooks - Error handling

Getting Started

Quick Start

Workflows

Reference

​Base URL

​GET /chains

​Request

​Parameters

​Response

​Key Fields

​GET /tokens

​Request

​Parameters

​Response

​Key Fields

​Native Token Address

​GET /quote

​Request

​Parameters

​Response

​Key Fields

​Constraints

​GET /status

​Request

​Parameters

​Response

​Key Fields

​Status Values

​POST /advanced/routes

​Request

​Parameters (JSON Body)

​Response

​When to Use

​POST /advanced/stepTransaction

​Request

​Parameters

​Response

​When to Use

​GET /connections

​Request

​Parameters

​Response

​Key Fields

​When to Use

​GET /tools

​Request

​Response

​Key Fields

​When to Use

​Quick Reference

​Related Pages

Base URL

GET /chains

Request

Parameters

Response

Key Fields

GET /tokens

Request

Parameters

Response

Key Fields

Native Token Address

GET /quote

Request

Parameters

Response

Key Fields

Constraints

GET /status

Request

Parameters

Response

Key Fields

Status Values

POST /advanced/routes

Request

Parameters (JSON Body)

Response

When to Use

POST /advanced/stepTransaction

Request

Parameters

Response

When to Use

GET /connections

Request

Parameters

Response

Key Fields

When to Use

GET /tools

Request

Response

Key Fields

When to Use

Quick Reference

Related Pages