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POST
/
v1
/
swaps
/
approval
Create a new Approval transaction
curl --request POST \
  --url https://sandbox-api.borderless.xyz/v1/swaps/approval \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "fromAccountId": "cm2c4x3cc000019stwv7um4zl",
  "fromAmount": "100.50",
  "fromAsset": "ETH",
  "passphrase": "my-secure-passphrase"
}
'
{
  "id": "<string>",
  "expiredAt": "2023-11-07T05:31:56Z",
  "fromAmountUSD": "<string>",
  "toAmountUSD": "<string>",
  "estimatedCostsUSD": "<string>",
  "steps": [
    {
      "executionDuration": 123,
      "source": {
        "currency": "<string>",
        "chainId": 123,
        "amount": "<string>",
        "amountUSD": "<string>",
        "minAmount": "<string>"
      },
      "destination": {
        "currency": "<string>",
        "chainId": 123,
        "amount": "<string>",
        "amountUSD": "<string>",
        "minAmount": "<string>"
      },
      "estimate": {
        "feeCosts": [
          {
            "amount": "<string>",
            "amountUSD": "<string>",
            "token": "<string>",
            "included": true
          }
        ],
        "gasCosts": [
          {
            "amount": "<string>",
            "amountUSD": "<string>",
            "token": "<string>",
            "included": true
          }
        ]
      }
    }
  ]
}

Authorizations

​
Authorization
string
header
required

Bearer authentication header of the form Bearer <token>, where <token> is your auth token.

Body

application/json
​
fromAccountId
string
required

The id of the account authorized for smart contract interaction.

Required string length: 25
Example:

"cm2c4x3cc000019stwv7um4zl"

​
fromAmount
string
required

The amount approved for the smart contract interaction.

Example:

"100.50"

​
fromAsset
enum<string>
required

The token associated with a specific blockchain for smart contract approval.

Available options:
POL,
USDT_POLYGON,
USDC_POLYGON,
USDM_POLYGON,
ETH,
USDT_ETHEREUM,
USDC_ETHEREUM,
USDM_ETHEREUM,
TRX,
USDT_TRON,
ETH_BASE,
USDC_BASE,
USDM_BASE,
ETH_OPTIMISM,
USDT_OPTIMISM,
USDC_OPTIMISM,
USDM_OPTIMISM,
BTC,
CELO,
CUSD_CELO,
USDC_CELO,
SOL,
USDC_SOLANA,
USDT_SOLANA
Example:

"ETH"

​
passphrase
string

The passphrase for executing the transaction, if required. Learn more at Transaction Signing Documentation.

Example:

"my-secure-passphrase"

Response

Successfully created Approval transaction data.

​
id
string
required

Temporary quote ID for execution via /swaps/quote/execution.

​
expiredAt
string<date-time>
required

Quote expiration date.

​
fromAmountUSD
string
required

Amount in USD for the source asset.

​
toAmountUSD
string
required

Amount in USD for the destination asset.

​
estimatedCostsUSD
string
required

Estimated costs in USD.

​
steps
object[]
required

Steps for the swap.