Swap Generate Payload

Developing

POST

earn/swap/generate/payload

Generate the message hash & transfer payload to be signed.

Request

Header Params

Body Params application/json

Example

{
  "userAddress": "0x1246E708e97755579E040D5f2b003feF1398cDe6",
  "tokenOut": "WUSD",
  "tokenIn": "USDT",
  "network": "eth-mainnet",
  "swapAmount": "100.123456", // Amount in token units (not wei)
  "destinationAddress": "0xA469e1b097510E15379d57e5713dbF26E0c377B1"
}

Request Code Samples

Shell

JavaScript

Java

Swift

PHP

Python

HTTP

Objective-C

Ruby

OCaml

Dart

curl --location --request POST 'https://openapi-devapi.swapflow.io/apiearn/swap/generate/payload' \
--header 'Authorization: Bearer eyJraWQiOiJXVkhqZWwwZDFlamVBNW5tN1FEUCs5YzJhT1hmWVBXMUFcL1drN0kxUkdjdz0iLCJhbGciOiJSUzI1NiJ9.eyJzdWIiOiI3amJkcTN2cm05b2NvdGFxNWhhc2pwcHNoOCIsInRva2VuX3VzZSI6ImFjY2VzcyIsInNjb3BlIjoiZGVmYXVsdC1tMm0tcmVzb3VyY2Utc2VydmVyLXVpeTVmZ1wvcmVhZCIsImF1dGhfdGltZSI6MTc0MTY2NzAwMCwiaXNzIjoiaHR0cHM6XC9cL2NvZ25pdG8taWRwLmFwLXNvdXRoZWFzdC0xLmFtYXpvbmF3cy5jb21cL2FwLXNvdXRoZWFzdC0xX1lBVlBCMkJZOSIsImV4cCI6MTc0MTY3MDYwMCwiaWF0IjoxNzQxNjY3MDAwLCJ2ZXJzaW9uIjoyLCJqdGkiOiJiZTU2MmRjMS0yMDQ2LTRhYjUtYTJmMC00Y2Q1OGY5MWU5NTEiLCJjbGllbnRfaWQiOiI3amJkcTN2cm05b2NvdGFxNWhhc2pwcHNoOCJ9.yS__s45rLYMRUAwliuT2KXxMAsVvBkZKubaqY-xRDYtOBA66Ax1su9GRe_Rz75zCI9EcKsx-plSDf8dwqIa-yxzI8AoqBQonRTgPklcyJwdv5cv-SVXVcHlJoEGRTMpETOixp0Ry7EoFdu7OpuwLkCji4loDSkbmZUH3OZSX0-4rKop9YfvrzSoNFVbbjTjLpa7qtRiBsEA36Bm4xIKoC8C8Gc-3H6aM-omWaSZBhUyoM-2Ru-48W-Gb7AZElK0pBaVebsma6jrxWqviKr1BU6_L4mBiHKwM2fZZuwasz6G1Me7jIFokY2ucgw28zQD93FpkhFVqAU3KwBubJz_HsQ' \
--header 'Content-Type: application/json' \
--data-raw '{
  "userAddress": "0x1246E708e97755579E040D5f2b003feF1398cDe6",
  "tokenOut": "WUSD",
  "tokenIn": "USDT",
  "network": "eth-mainnet",
  "swapAmount": "100.123456", // Amount in token units (not wei)
  "destinationAddress": "0xA469e1b097510E15379d57e5713dbF26E0c377B1"
}'

Responses

🟢200Success

application/json

Body

Example

{
    "code": 200,
    "data": {
        "payload": "0xa9059cbb000000000000000000000000cbe6fc6ef75613329308648c1df523d56ab984000000000000000000000000000000000000000000000000003782dace9d900000",
        "messageHash": "0x39a6a83f3a85de5d98caf11ff3de4951468df9f3ee759645364c2aff3239802a",
        "contractAddress": "0xaadec960378ec0fffba75d36801583cf793c90a5",
        "depositAddress": "0xcBE6Fc6EF75613329308648C1dF523d56AB98400",
        "depositAmount": "4",
        "depositNetwork": "eth-sepolia",
        "redeemDelayDays": 0
    },
    "message": "success"
}

Modified at 2025-06-19 02:53:01

Estimate Receive Amount

Initiate Swap