RFQ works when a buyer invites sellers to bid on specific amount of an asset. The buyer then uses these bids to determine the best available price and service level. The sellers use automated, programmatic response software to quote at their fair value price.
To initiate a swap, first determine if the DEX has the necessary allowance to access the tokens.
API URL: https://api.expand.network/dex/createorder
Sample Request:
{
"dexId": "1900",
"amountIn": "100000",
"path": [
"0xe0C9275E44Ea80eF17579d33c55136b7DA269aEb",
"0xdFCeA9088c8A88A76FF74892C1457C17dfeef9C1"
],
"to": "0xa67E9B68c41b0f26184D64C26e0b2B81466E5994",
"from": "0xa67E9B68c41b0f26184D64C26e0b2B81466E5994",
"decayStartTime": "1707110948",
"decayEndTime": "1707113948",
"amountOutMin": "10000000000",
"deadline": "1707313948"
}Sample Response:
{
"status": 200,
"msg": "success",
"data": {
"chainId": "1",
"domain": {
"name": "Permit2",
"chainId": "1",
"verifyingContract": "0x000000000022d473030f116ddee9f6b43ac78ba3"
},
"types": {
"PermitWitnessTransferFrom": [
{
"name": "permitted",
"type": "TokenPermissions"
},
{
"name": "spender",
"type": "address"
},
{
"name": "nonce",
"type": "uint256"
},
{
"name": "deadline",
"type": "uint256"
},
{
"name": "witness",
"type": "ExclusiveDutchOrder"
}
],
"TokenPermissions": [
{
"name": "token",
"type": "address"
},
{
"name": "amount",
"type": "uint256"
}
],
"ExclusiveDutchOrder": [
{
"name": "info",
"type": "OrderInfo"
},
{
"name": "decayStartTime",
"type": "uint256"
},
{
"name": "decayEndTime",
"type": "uint256"
},
{
"name": "exclusiveFiller",
"type": "address"
},
{
"name": "exclusivityOverrideBps",
"type": "uint256"
},
{
"name": "inputToken",
"type": "address"
},
{
"name": "inputStartAmount",
"type": "uint256"
},
{
"name": "inputEndAmount",
"type": "uint256"
},
{
"name": "outputs",
"type": "DutchOutput[]"
}
],
"OrderInfo": [
{
"name": "reactor",
"type": "address"
},
{
"name": "swapper",
"type": "address"
},
{
"name": "nonce",
"type": "uint256"
},
{
"name": "deadline",
"type": "uint256"
},
{
"name": "additionalValidationContract",
"type": "address"
},
{
"name": "additionalValidationData",
"type": "bytes"
}
],
"DutchOutput": [
{
"name": "token",
"type": "address"
},
{
"name": "startAmount",
"type": "uint256"
},
{
"name": "endAmount",
"type": "uint256"
},
{
"name": "recipient",
"type": "address"
}
]
},
"values": {
"permitted": {
"token": "0xe0C9275E44Ea80eF17579d33c55136b7DA269aEb",
"amount": {
"type": "BigNumber",
"hex": "0x0186a0"
}
},
"spender": "0x6000da47483062A0D734Ba3dc7576Ce6A0B645C4",
"nonce": {
"type": "BigNumber",
"hex": "0x01"
},
"deadline": "1707313948",
"witness": {
"info": {
"reactor": "0x6000da47483062A0D734Ba3dc7576Ce6A0B645C4",
"swapper": "0xa67E9B68c41b0f26184D64C26e0b2B81466E5994",
"nonce": {
"type": "BigNumber",
"hex": "0x01"
},
"deadline": "1707313948",
"additionalValidationContract": "0x0000000000000000000000000000000000000000",
"additionalValidationData": "0x"
},
"decayStartTime": "1707110948",
"decayEndTime": "1707113948",
"exclusiveFiller": "0x0000000000000000000000000000000000000000",
"exclusivityOverrideBps": {
"type": "BigNumber",
"hex": "0x00"
},
"inputToken": "0xe0C9275E44Ea80eF17579d33c55136b7DA269aEb",
"inputStartAmount": {
"type": "BigNumber",
"hex": "0x0186a0"
},
"inputEndAmount": {
"type": "BigNumber",
"hex": "0x0186a0"
},
"outputs": [
{
"token": "0xdFCeA9088c8A88A76FF74892C1457C17dfeef9C1",
"startAmount": {
"type": "BigNumber",
"hex": "0x02363e7f00"
},
"endAmount": {
"type": "BigNumber",
"hex": "0x02363e7f00"
},
"recipient": "0xa67E9B68c41b0f26184D64C26e0b2B81466E5994"
}
]
}
},
"serializedOrder": "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"
}
}This is an off-chain process that the user needs to perform at their end.
Sample Request:
const { ethers } = require('ethers');
const provider = new ethers.providers.JsonRpcProvider("https://mainnet.infura.io/v3/<rpc key>");
const signer = new ethers.Wallet('<private key>', provider);
const signature = await signer._signTypedData(domain, types, values);Expand.network will soon support publishing orders on Uniswap X.
This can be done using the following API endpoint:
API URL: https://api.expand.network/dex/swap
Sample Request:
{
"dexId": "1900",
"from": "0x63056E00436Da25BcF48A40dfBbDcc7089351006",
"gas": "173376",
"signature": "0xc2f9557dcc27ff17ecf91211a6a0af6ead44acf6a7d7322d0f40afefca596a843b5d95698332867a11eb3a3f9984ac3639581b765138fc0cc88322a889dffd1d1b",
"serializedOrder": "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"
}Sample Response:
{
"status": 200,
"msg": "success",
"data": {
"chainId": "1",
"from": "0x63056E00436Da25BcF48A40dfBbDcc7089351006",
"to": "0x6000da47483062A0D734Ba3dc7576Ce6A0B645C4",
"gas": "173376",
"value": "0",
"data": "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"
}
}