Skip to main content
POST
/
v1
/
exchange
/
stablefx
/
signatures
/
funding
/
presign
Generate funding presign data
curl --request POST \
  --url https://api-sandbox.circle.com/v1/exchange/stablefx/signatures/funding/presign \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "contractTradeIds": [
    "10",
    "11",
    "12"
  ],
  "type": "maker",
  "fundingMode": "gross"
}'
{
  "typedData": {
    "domain": {
      "name": "Permit2",
      "chainId": 11155111,
      "verifyingContract": "0xffd21ca8F0876DaFAD7de09404E0c1f868bbf1AE"
    },
    "types": {
      "EIP712Domain": [
        {
          "name": "name",
          "type": "string"
        },
        {
          "name": "chainId",
          "type": "uint256"
        },
        {
          "name": "verifyingContract",
          "type": "address"
        }
      ],
      "TokenPermissions": [
        {
          "name": "token",
          "type": "address"
        },
        {
          "name": "amount",
          "type": "uint256"
        }
      ],
      "SingleTradeWitness": [
        {
          "name": "id",
          "type": "uint256"
        }
      ],
      "PermitWitnessTransferFrom": [
        {
          "name": "permitted",
          "type": "TokenPermissions"
        },
        {
          "name": "spender",
          "type": "address"
        },
        {
          "name": "nonce",
          "type": "uint256"
        },
        {
          "name": "deadline",
          "type": "uint256"
        },
        {
          "name": "witness",
          "type": "SingleTradeWitness"
        }
      ]
    },
    "primaryType": "PermitWitnessTransferFrom",
    "message": {
      "permitted": {
        "token": "0xTOKEN",
        "amount": "1000"
      },
      "spender": "0xffd21ca8F0876DaFAD7de09404E0c1f868bbf1AE",
      "nonce": "42",
      "deadline": "1735689600",
      "witness": {
        "id": "10"
      }
    }
  }
}

Authorizations

​
Authorization
string
header
required

Circle's API Keys are formatted in the following structure "PREFIX:ID:SECRET". All three parts are requred to make a successful request.

Body

application/json

Request body for generating funding presign data

​
contractTradeIds
string[]
required

List of contract trade IDs

Minimum length: 1
Example:
["10", "11", "12"]
​
type
enum<string>
required

The type of trader.

Available options:
maker,
taker
​
fundingMode
enum<string>
default:gross

The funding mode for the operation.

Available options:
gross,
net

Response

200 - application/json

Funding presign data generated successfully

Response containing Permit2 EIP-712 typed data for funding operations

​
typedData
object
required

EIP-712 typed data structure for single Permit2 transfer

  • Option 1
  • Option 2