The following is a complete swap flow demonstrating a swap from WBTC to ETH on Mainnet. Routing is restricted to UniswapX V2, V2, V3, and V4 routes. Both wallet spend approval and permit signature are required and demonstrated; note that the interacting wallet broadcasts the approval object from the Check Approval Response and the swap object from the Swap Response to the chain after receiving each.

​
Check Approval Request

     --url https://trade-api.gateway.uniswap.org/v1/check_approval \
     --header 'accept: application/json' \
     --header 'content-type: application/json' \
     --header 'x-api-key: ****' \
     --data '
{
  "chainId": 1,
  "urgency": "urgent",
  "includeGasInfo": true,
  "walletAddress": "0xC9bebBA9f481b12cE6f3EA54c4B182c9636ec421",
  "token": "0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599",
  "amount": "2516"
}
'

​
Check Approval Response

{
    "requestId": "e63f1e1e-b9e9-411a-bcc8-ff18ce4e77cf",
    "approval": {
        "to": "0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599",
        "value": "0x00",
        "from": "0xC9bebBA9f481b12cE6f3EA54c4B182c9636ec421",
        "data": "0x095ea7b3000000000000000000000000000000000022d473030f116ddee9f6b43ac78ba3ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
        "maxFeePerGas": "4656513686",
        "maxPriorityFeePerGas": "2000000000",
        "gasLimit": "56344",
        "chainId": 1
    },
    "cancel": null,
    "gasFee": "262366607123984",
}

​
Quote Request

     --url https://trade-api.gateway.uniswap.org/v1/quote \
     --header 'accept: application/json' \
     --header 'content-type: application/json' \
     --header 'x-api-key: ****' \
     --header 'x-universal-router-version: 2.0' \
     --data '
{
  "type": "EXACT_INPUT",
  "tokenInChainId": 1,
  "tokenOutChainId": 1,
  "generatePermitAsTransaction": false,
  "autoSlippage": "DEFAULT",
  "routingPreference": "BEST_PRICE",
  "spreadOptimization": "EXECUTION",
  "urgency": "normal",
  "permitAmount": "FULL",
  "amount": "2516",
  "tokenIn": "0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599",
  "tokenOut": "0x0000000000000000000000000000000000000000",
  "swapper": "0xC9bebBA9f481b12cE6f3EA54c4B182c9636ec421",
  "protocols": ["UNISWAPX_V2","V4","V3","V2"]
}
'

​
Quote Response

{
    "requestId": "34784ef4-065a-4fa2-b77c-521f785fc068",
    "routing": "CLASSIC",
    "quote": {
        "chainId": 1,
        "input": {
            "amount": "2516",
            "token": "0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599"
        },
        "output": {
            "amount": "996320746321162",
            "token": "0x0000000000000000000000000000000000000000",
            "recipient": "0xC9bebBA9f481b12cE6f3EA54c4B182c9636ec421"
        },
        "swapper": "0xC9bebBA9f481b12cE6f3EA54c4B182c9636ec421",
        "route": [
            [
                {
                    "type": "v4-pool",
                    "address": "0x599326d9cd5e1ea0893305c87d5ec3199e7f05e94d72159f35dea381479a615e",
                    "tokenIn": {
                        "chainId": 1,
                        "decimals": "8",
                        "address": "0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599",
                        "symbol": "WBTC"
                    },
                    "tokenOut": {
                        "chainId": 1,
                        "decimals": "18",
                        "address": "0x0000000000000000000000000000000000000000",
                        "symbol": "ETH"
                    },
                    "fee": "500",
                    "tickSpacing": "10",
                    "hooks": "0x0000000000000000000000000000000000000000",
                    "liquidity": "82781860385007263",
                    "sqrtRatioX96": "125814565506407615477027",
                    "tickCurrent": "-267075",
                    "amountIn": "2516",
                    "amountOut": "993829944455359"
                }
            ]
        ],
        "slippage": 5.5,
        "tradeType": "EXACT_INPUT",
        "quoteId": "62e83902-9455-405d-8c62-cdf8ee9e2042",
        "gasFeeUSD": "1.27511942409885062",
        "gasFeeQuote": "489108586810000",
        "gasUseEstimate": "180350",
        "priceImpact": 0.14,
        "txFailureReasons": [],
        "maxPriorityFeePerGas": "2000000000",
        "maxFeePerGas": "4656513686",
        "gasFee": "489108586810000",
        "routeString": "[V4] 100.00% = WBTC -- 0.05% [0x599326d9cd5e1ea0893305c87d5ec3199e7f05e94d72159f35dea381479a615e]ETH",
        "blockNumber": "22483653",
        "aggregatedOutputs": [
            {
                "amount": "993829944455360",
                "token": "0x0000000000000000000000000000000000000000",
                "recipient": "0xC9bebBA9f481b12cE6f3EA54c4B182c9636ec421",
                "bps": 9975,
                "minAmount": "993829944455360"
            },
            {
                "amount": "2490801865802",
                "token": "0x0000000000000000000000000000000000000000",
                "recipient": "0x000000fee13a103A10D593b9AE06b3e05F2E7E1c",
                "bps": 25,
                "minAmount": "2490801865802"
            }
        ],
        "portionAmount": "2490801865802",
        "portionBips": 25,
        "portionRecipient": "0x000000fee13a103A10D593b9AE06b3e05F2E7E1c"
    },
    "permitData": {
        "domain": {
            "name": "Permit2",
            "chainId": 1,
            "verifyingContract": "0x000000000022D473030F116dDEE9F6B43aC78BA3"
        },
        "types": {
            "PermitSingle": [
                {
                    "name": "details",
                    "type": "PermitDetails"
                },
                {
                    "name": "spender",
                    "type": "address"
                },
                {
                    "name": "sigDeadline",
                    "type": "uint256"
                }
            ],
            "PermitDetails": [
                {
                    "name": "token",
                    "type": "address"
                },
                {
                    "name": "amount",
                    "type": "uint160"
                },
                {
                    "name": "expiration",
                    "type": "uint48"
                },
                {
                    "name": "nonce",
                    "type": "uint48"
                }
            ]
        },
        "values": {
            "details": {
                "token": "0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599",
                "amount": "1461501637330902918203684832716283019655932542975",
                "expiration": "1749845047",
                "nonce": "1"
            },
            "spender": "0x66a9893cc07d91d95644aedd05d03f95e1dba8af",
            "sigDeadline": "1747254847"
        }
    },
    "permitTransaction": null
}

​
Swap Request

     --url https://trade-api.gateway.uniswap.org/v1/swap \
     --header 'accept: application/json' \
     --header 'content-type: application/json' \
     --header 'x-api-key: ****' \
     --header 'x-universal-router-version: 2.0' \
     --data '
{
    "quote":
    {
        "chainId": 1,
        "input":
        {
            "amount": "2516",
            "token": "0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599"
        },
        "output":
        {
            "amount": "996320746321162",
            "token": "0x0000000000000000000000000000000000000000",
            "recipient": "0xC9bebBA9f481b12cE6f3EA54c4B182c9636ec421"
        },
        "swapper": "0xC9bebBA9f481b12cE6f3EA54c4B182c9636ec421",
        "route":
        [
            [
                {
                    "type": "v4-pool",
                    "address": "0x599326d9cd5e1ea0893305c87d5ec3199e7f05e94d72159f35dea381479a615e",
                    "tokenIn":
                    {
                        "chainId": 1,
                        "decimals": "8",
                        "address": "0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599",
                        "symbol": "WBTC"
                    },
                    "tokenOut":
                    {
                        "chainId": 1,
                        "decimals": "18",
                        "address": "0x0000000000000000000000000000000000000000",
                        "symbol": "ETH"
                    },
                    "fee": "500",
                    "tickSpacing": "10",
                    "hooks": "0x0000000000000000000000000000000000000000",
                    "liquidity": "82781860385007263",
                    "sqrtRatioX96": "125814565506407615477027",
                    "tickCurrent": "-267075",
                    "amountIn": "2516",
                    "amountOut": "993829944455359"
                }
            ]
        ],
        "slippage": 5.5,
        "tradeType": "EXACT_INPUT",
        "quoteId": "62e83902-9455-405d-8c62-cdf8ee9e2042",
        "gasFeeUSD": "1.27511942409885062",
        "gasFeeQuote": "489108586810000",
        "gasUseEstimate": "180350",
        "priceImpact": 0.14,
        "txFailureReasons":
        [],
        "maxPriorityFeePerGas": "2000000000",
        "maxFeePerGas": "4656513686",
        "gasFee": "489108586810000",
        "routeString": "[V4] 100.00% = WBTC -- 0.05% [0x599326d9cd5e1ea0893305c87d5ec3199e7f05e94d72159f35dea381479a615e]ETH",
        "blockNumber": "22483653",
        "aggregatedOutputs":
        [
            {
                "amount": "993829944455360",
                "token": "0x0000000000000000000000000000000000000000",
                "recipient": "0xC9bebBA9f481b12cE6f3EA54c4B182c9636ec421",
                "bps": 9975,
                "minAmount": "993829944455360"
            },
            {
                "amount": "2490801865802",
                "token": "0x0000000000000000000000000000000000000000",
                "recipient": "0x000000fee13a103A10D593b9AE06b3e05F2E7E1c",
                "bps": 25,
                "minAmount": "2490801865802"
            }
        ],
        "portionAmount": "2490801865802",
        "portionBips": 25,
        "portionRecipient": "0x000000fee13a103A10D593b9AE06b3e05F2E7E1c"
    },
    "permitData":
    {
        "domain":
        {
            "name": "Permit2",
            "chainId": 1,
            "verifyingContract": "0x000000000022D473030F116dDEE9F6B43aC78BA3"
        },
        "types":
        {
            "PermitSingle":
            [
                {
                    "name": "details",
                    "type": "PermitDetails"
                },
                {
                    "name": "spender",
                    "type": "address"
                },
                {
                    "name": "sigDeadline",
                    "type": "uint256"
                }
            ],
            "PermitDetails":
            [
                {
                    "name": "token",
                    "type": "address"
                },
                {
                    "name": "amount",
                    "type": "uint160"
                },
                {
                    "name": "expiration",
                    "type": "uint48"
                },
                {
                    "name": "nonce",
                    "type": "uint48"
                }
            ]
        },
        "values":
        {
            "details":
            {
                "token": "0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599",
                "amount": "1461501637330902918203684832716283019655932542975",
                "expiration": "1749845047",
                "nonce": "1"
            },
            "spender": "0x66a9893cc07d91d95644aedd05d03f95e1dba8af",
            "sigDeadline": "1747254847"
        }
    },
    "signature": "0xb22e7f47d85108d964f1f90cbca724111f11e0247584821f3da9d653626da48678b977a3c78036d528a6a2dd4261bd47ba32335bc0a523fe75f640389ac9ed031b",
    "simulateTransaction": true,
    "refreshGasPrice": true,
    "safetyMode":"SAFE",
    "urgency": "normal"
}

​
Swap Response

{
    "requestId": "dfc1bd88-c741-4cdb-b118-0dddb690bfef",
    "swap": {
        "data": "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",
        "value": "0x00",
        "to": "0x66a9893cc07d91d95644aedd05d03f95e1dba8af",
        "from": "0xC9bebBA9f481b12cE6f3EA54c4B182c9636ec421",
        "maxFeePerGas": "4794697230",
        "maxPriorityFeePerGas": "2000000000",
        "gasLimit": "179302",
        "chainId": 1
    },
    "gasFee": "859698802733460",
}