1inch API
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Quote / Swap
Get quote and call data for an aggregated swap which can be used with a web3 provider to send the transaction
All requests and examples are made for Ethereum mainnet, if you plan to use the API on other chains, change the request url as follows: https://api.1inch.exchange/v3.0/56/<method> — for Binance Smart Chain https://api.1inch.exchange/v3.0/137/<method> — for Polygon
get
https://api.1inch.exchange/v3.0/1
/quote
Quote

Description of query parameters

Parametr Name
Type
Description
fromTokenAddress*
string
contract address of a token to sell
e.g.: 0x6b175474e89094c44da98b954eedeac495271d0f
toTokenAddress *
string
contract address of a token to buy
e.g.: 0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48
amount *
integer
amount of a token to sell, set in minimal divisible units
e.g.:
1.00 DAI set as 1000000000000000000
51.03 USDC set as 51030000
fee
number
this percentage of fromTokenAddress token amount will be sent to referrerAddress, the rest will be used as input for a swap
min: 0; max: 3; default: 0;
example to set a fee to 1.5%: &fee=1.5
protocols
string
specify liquidity protocols to use. If not set, all liquidity protocols will be used
e.g.: &protocols=WETH,CURVE,BALANCER,...,ZRX
default: all protocols can be used
gasPrice
string
1inch takes in account gas expenses to determine exchange route. It is important to use the same gas price on the quote and swap methods
gas price set in wei: 12.5 GWEI set as 12500000000
default: "fast" from the network
complexityLevel
string
maximum number of token-connectors to be used in a transaction. The more is used — the longer route estimation will take, the more complex route might be as a result. If not set, two token-connectors might be used min: 0; max: 3; default: 2
connectorTokens
string
token-connectors can be specified via this parameter. The more is set — the longer route estimation will take. If not set, default token-connectors will be used. If token you want to exchange doesn't have a pool with one of the default token-connectors, this parameter will help find the route; should be the same for a quote and swap
e.g.: &connectorTokens=0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE, 0x6b175474e89094c44da98b954eedeac495271d0f
default: list of dafault token-connectors
gasLimit
integer
maximum amount of gas for a swap; should be the same for a quote and swap
default: 11500000; max: 11500000;
mainRouteParts
integer
limit maximum number of main route parts; should be the same for a quote and swap
default: 20; max: 50;
parts
integer
limit maximum number of parts each main route part can be split into; should be the same for a quote and swap
default: 20; max: 100;

Description of response parameters

Parameter Name
Description
fromToken
parameters of a token to sell
toToken
parameters of a token to buy
fromTokenAmount
input amount of fromToken in minimal divisible units
toTokenAmount
result amount of toToken in minimal divisible units
protocols
route of the trade
estimatedGas
rough estimated amount of the gas limit for used protocols;
do not use estimatedGas from the quote method as the gas limit of a transaction
estimatedGas should not be used from the quote method.
Request url to quote 10 000 USDT → WBTC https://api.1inch.exchange/v3.0/1/quote?fromTokenAddress=0xdac17f958d2ee523a2206206994597c13d831ec7&toTokenAddress=0x2260fac5e5542a773aa44fbcfedf7c193bc2c599&amount=10000000000
curl curl -X GET "https://api.1inch.exchange/v3.0/1/quote?fromTokenAddress=0xdac17f958d2ee523a2206206994597c13d831ec7&toTokenAddress=0x2260fac5e5542a773aa44fbcfedf7c193bc2c599&amount=10000000000" -H "accept: application/json"
Response body
Response headers
1
{
2
"fromToken": {
3
"symbol": "USDT",
4
"name": "Tether USD",
5
"address": "0xdac17f958d2ee523a2206206994597c13d831ec7",
6
"decimals": 6,
7
"logoURI": "https://tokens.1inch.exchange/0xdac17f958d2ee523a2206206994597c13d831ec7.png"
8
},
9
"toToken": {
10
"symbol": "WBTC",
11
"name": "Wrapped BTC",
12
"address": "0x2260fac5e5542a773aa44fbcfedf7c193bc2c599",
13
"decimals": 8,
14
"logoURI": "https://tokens.1inch.exchange/0x2260fac5e5542a773aa44fbcfedf7c193bc2c599.png"
15
},
16
"toTokenAmount": "53797189", // result amount of WBTC (0.538 WBTC)
17
"fromTokenAmount": "10000000000",
18
"protocols": [
19
[
20
[
21
{
22
"name": "CURVE",
23
"part": 100,
24
"fromTokenAddress": "0xdac17f958d2ee523a2206206994597c13d831ec7",
25
"toTokenAddress": "0x6b175474e89094c44da98b954eedeac495271d0f"
26
}
27
],
28
[
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{
30
"name": "SUSHI",
31
"part": 100,
32
"fromTokenAddress": "0x6b175474e89094c44da98b954eedeac495271d0f",
33
"toTokenAddress": "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2"
34
}
35
],
36
[
37
{
38
"name": "BALANCER",
39
"part": 100,
40
"fromTokenAddress": "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
41
"toTokenAddress": "0x2260fac5e5542a773aa44fbcfedf7c193bc2c599"
42
}
43
]
44
]
45
],
46
"estimatedGas": 590385 // do not use gas limit from the quote method
47
}
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date: Sun,22 Nov 2020 18:21:55 GMT
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expect-ct: max-age=604800,report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
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get
https://api.1inch.exchange/v3.0/1
/swap
Swap

Description of query parameters

Parametr Name
Type
Description
fromTokenAddress *
string
contract address of a token to sell
e.g.: 0x6b175474e89094c44da98b954eedeac495271d0f
toTokenAddress *
string
contract address of a token to buy
e.g.: 0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48
amount *
integer
amount of a token to sell, set in minimal divisible units
e.g.:
1.00 DAI set as 1000000000000000000
51.03 USDC set as 51030000
fromAddress *
string
address of a seller, make sure that this address has approved to spend fromTokenAddress in needed amount
e.g.: 0x52bc44d5378309ee2abf1539bf71de1b7d7be3b5
slippage *
number
limit of price slippage you are willing to accept in percentage, may be set with decimals. &slippage=0.5 means 0.5% slippage is acceptable. Low values increase chances that transaction will fail, high values increase chances of front running. Set values in the range from 0 to 50
protocols
string
specify liquidity protocols. If not set, all liquidity protocols will be used; you can disable any protocol by listing all protocols except those you don't need
e.g.: &protocols=WETH,CURVE,BALANCER,...,ZRX
default: all protocols can be used
destReceiver
string
recipient address of a purchased token if not set, fromAddress will receive a purchased token
referrerAddress
string
referrer's address
fee
number
this percentage of fromTokenAddress token amount will be sent to referrerAddress, the rest will be used as input for a swap
min: 0; max: 3; default: 0;
example to set a fee to 1.5%: &fee=1.5
gasPrice
string
1inch takes in account gas expenses to determine exchange route. It is important to use the same gas price on the quote and swap methods.
Gas price set in wei: 12.5 GWEI set as 12500000000
default: "fast" from network
burnChi
boolean
If true, CHI will be burned from fromAddress to compensate gas. Check CHI balance and allowance before turning that on. CHI should be approved for the spender address
default: false
complexityLevel
string
maximum number of token-connectors to be used in a transaction. The more is used — the longer route estimation will take, the more complex route might be as a result. If not set, two token-connectors may be used min: 0; max: 3; default: 2
connectorTokens
string
token-connectors can be specified via this parameter. The more is set — the longer route estimation will take. If not set, default token-connectors will be used. If a token you want to exchange doesn't have a pool with one of the default token-connectors this parameter will help find the route; should be the same for a quote and swap max: 5;
e.g.: &connectorTokens=0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE, 0x6b175474e89094c44da98b954eedeac495271d0f
default: list of dafault token-connectors
allowPartialFill
boolean
if true, the algorithm can cancel part of the route, if the rate has become less attractive. Unswapped tokens will return to the fromAddress
default: true
disableEstimate
boolean
if true, disable most of the checks
default: false
gasLimit
integer
maximum amount of gas for a swap; should be the same for a quote and swap
default: 11500000; max: 11500000
mainRouteParts
integer
limit maximum number of main route parts; should be the same for a quote and swap
default: 20; max: 50
parts
integer
limit maximum number of parts each main route parts can be split into; should be the same for a quote and swap
default: 20; max: 100

Description of response parameters

Parameter Name
Description
fromToken
parameters of a token to sell
toToken
parameters of a token to buy
fromTokenAmount
input amount of fromToken in minimal divisible units
toTokenAmount
result amount of toToken in minimal divisible units
protocols
route of the trade
from
transactions will be sent from this address
to
transactions will be sent to our contract address
data
call data
value
amount of ETH (in wei) will be sent to the contract address
gasPrice
gas price in wei
gas
estimated amount of the gas limit, increase this value by 25%
Request url to swap 100 ETH → DAI https://api.1inch.exchange/v3.0/1/swap?fromTokenAddress=0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee&toTokenAddress=0x6b175474e89094c44da98b954eedeac495271d0f&amount=100000000000000000000&fromAddress=0x52bc44d5378309ee2abf1539bf71de1b7d7be3b5&slippage=1
cur curl -X GET "https://api.1inch.exchange/v3.0/1/swap?fromTokenAddress=0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee&toTokenAddress=0x6b175474e89094c44da98b954eedeac495271d0f&amount=100000000000000000000&fromAddress=0x52bc44d5378309ee2abf1539bf71de1b7d7be3b5&slippage=1" -H "accept: application/json"
Response body
Response headers
1
{
2
{
3
"fromToken": {
4
"symbol": "ETH",
5
"name": "Ethereum",
6
"decimals": 18,
7
"address": "0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee",
8
"logoURI": "https://tokens.1inch.exchange/0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee.png"
9
},
10
"toToken": {
11
"symbol": "DAI",
12
"name": "Dai Stablecoin",
13
"decimals": 18,
14
"address": "0x6b175474e89094c44da98b954eedeac495271d0f",
15
"logoURI": "https://tokens.1inch.exchange/0x6b175474e89094c44da98b954eedeac495271d0f.png"
16
},
17
"toTokenAmount": "51231376107994948308048",
18
"fromTokenAmount": "100000000000000000000",
19
"protocols": [
20
[
21
[{
22
"name": "Mooniswap",
23
"part": 100,
24
"fromTokenAddress": "0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee",
25
"toTokenAddress": "0x6b175474e89094c44da98b954eedeac495271d0f"
26
}]
27
],
28
[
29
[{
30
"name": "WETH",
31
"part": 100,
32
"fromTokenAddress": "0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee",
33
"toTokenAddress": "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2"
34
}],
35
[{
36
"name": "BALANCER",
37
"part": 10,
38
"fromTokenAddress": "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
39
"toTokenAddress": "0x6b175474e89094c44da98b954eedeac495271d0f"
40
}, {
41
"name": "SUSHI",
42
"part": 45,
43
"fromTokenAddress": "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
44
"toTokenAddress": "0x6b175474e89094c44da98b954eedeac495271d0f"
45
}, {
46
"name": "UNISWAP_V2",
47
"part": 45,
48
"fromTokenAddress": "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
49
"toTokenAddress": "0x6b175474e89094c44da98b954eedeac495271d0f"
50
}]
51
]
52
],
53
"tx": {
54
"from": "0x52bc44d5378309ee2abf1539bf71de1b7d7be3b5",
55
"to": "0x111111125434b319222cdbf8c261674adb56f3ae", // our contract address
56
"data": "0x90411a32000000000000000000000000e4e8f73096301b0938b896a79521088633b85b75000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000001c0000000000000000000000000eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee0000000000000000000000006b175474e89094c44da98b954eedeac495271d0f000000000000000000000000e4e8f73096301b0938b896a79521088633b85b7500000000000000000000000052bc44d5378309ee2abf1539bf71de1b7d7be3b50000000000000000000000000000000000000000000000056bc75e2d63100000000000000000000000000000000000000000000000000abd7c629368f674b007000000000000000000000000000000000000000000000ad9422aaec1f1300c5000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000014000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000009000000000000000000000000000000000000000000000000000000000000012000000000000000000000000000000000000000000000000000000000000003c000000000000000000000000000000000000000000000000000000000000005c00000000000000000000000000000000000000000000000000000000000000a400000000000000000000000000000000000000000000000000000000000000c800000000000000000000000000000000000000000000000000000000000000de00000000000000000000000000000000000000000000000000000000000001020000000000000000000000000000000000000000000000000000000000000118000000000000000000000000000000000000000000000000000000000000014a0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000001e4b3af37c0000000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000000440000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000140000000000000000000000000000019000000000000000000000000075116bd1ab4b0065b44e1a4ea9b4180a171406ed00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000000a4d5bcb9b500000000000000000000000000000000000000000000000000000000000000000000000000000000000000006b175474e89094c44da98b954eedeac495271d0f0000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000000100000000000000000000000068a17b587caf4f9329f0e372e3a78d23a46de6b5000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000800000000000000000000000000000000000000000000000000000000000000144b3af37c000000000000000000000000000000000000000000000000000000000000000804000000000000000000000000000000000000000000000000000000000000004000000000000000000000000eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee0000000000000000000000000000017c0000000000000000000000000000017c000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc20000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000800000000000000000000000000000000000000000000000000000000000000004d0e30db00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000003c483f1291f00000000000000000000000000000000000000000000000000000000000000800000000000000000000000000000000000000000000000000000000000000360000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc20000000000000000000000000000000200000000000000000000000000000014000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000160000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000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57
"value": "100000000000000000000", // 100 eth
58
"gasPrice": "23000000000", // 23 gwei
59
"gas": 557035 // increase this amount by 25%
60
}
61
}
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List of default token connectors (Ethereum mainnet)

symbol
contract address
ETH
0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
WETH
0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2
1INCH
0x111111111117dc0aa78b770fa6a738034120c302
DAI
0x6b175474e89094c44da98b954eedeac495271d0f
USDC
0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48
USDT
0xdac17f958d2ee523a2206206994597c13d831ec7
WBTC
0x2260fac5e5542a773aa44fbcfedf7c193bc2c599
stETH
0xae7ab96520de3a18e5e111b5eaab095312d7fe84
PAX
0x8e870d67f660d95d5be530380d0ec0bd388289e1
TUSD
0x0000000000085d4780b73119b644ae5ecd22b376
BNT
0x1f573d6fb3f13d689ff844b4ce37794d79a7ff1c
BAL
0xba100000625a3754423978a60c9317c58a424e3d
sUSD
0x57ab1ec28d129707052df4df418d58a2d46d5f51

List of default token connectors (Binance Smart Chain)

symbol
contract address
BNB
0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
WBNB
0xbb4cdb9cbd36b01bd1cbaebf2de08d9173bc095c
USDT
0x55d398326f99059ff775485246999027b3197955
USDC
0x8ac76a51cc950d9822d68b83fe1ad97b32cd580d
BTCB
0x7130d2a12b9bcbfae4f2634d864a1ee1ce3ead9c
ETH
0x2170ed0880ac9a755fd29b2688956bd959f933f8
DAI
0x1af3f329e8be154074d8769d1ffa4ee058b1dbc3
JULb
0x32dffc3fe8e3ef3571bf8a72c0d0015c5373f41d
1INCH
0x111111111117dc0aa78b770fa6a738034120c302
BUSD
0xe9e7cea3dedca5984780bafc599bd69add087d56
BAKE
0xe02df9e3e622debdd69fb838bb799e3f168902c5
BANANA
0x603c7f932ed1fc6575303d8fb018fdcbb0f39a95
SPARTA
0xe4ae305ebe1abe663f261bc00534067c80ad677c

List of default token connectors (Polygon)

symbol
contract address
QUICK
0x831753dd7087cac61ab5644b308642cc1c33dc13
SDT
0x361a5a4993493ce00f61c32d4ecca5512b82ce90
MUST
0x9c78ee466d6cb57a4d01fd887d2b5dfb2d46288f
USDC
0x2791bca1f2de4661ed88a30c99a7a9449aa84174
WETH
0x7ceb23fd6bc0add59e62ac25578270cff1b9f619
WMATIC
0x0d500b1d8e8ef31e21c99d1db9a6444d3adf1270
MATIC
0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
USDT
0xc2132d05d31c914a87c6611c10748aeb04b58e8f
DAI
0x8f3cf7ad23cd3cadbd9735aff958023239c6a063
WBTC
0x1bfd67037b42cf73acf2047067bd4f2c47d9bfd6
Last modified 5mo ago