POST
/
v3
/
quote
/
prepare-call-quote
curl --request POST \
  --url https://be.onebalance.io/api/v3/quote/prepare-call-quote \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '{
  "accounts": [
    {
      "type": "solana",
      "accountAddress": "EB8Hi4LoqUVCGUPJ2y9MsHbEsJQJvmpQRUWrLpjEZxC6"
    },
    {
      "type": "kernel-v3.3-ecdsa",
      "accountAddress": "0xDb69A4Ded06AaD92C69c42232b691CFD8bF347e8",
      "signerAddress": "0xDb69A4Ded06AaD92C69c42232b691CFD8bF347e8",
      "deploymentType": "EIP7702"
    }
  ],
  "targetChain": "eip155:42161",
  "calls": [
    {
      "to": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "data": "0xa9059cbb0000000000000000000000004EbcFae0C3e747C95504CA7c79c46f725Cb4c7520000000000000000000000000000000000000000000000000000000000000001",
      "value": "0x0"
    }
  ],
  "tokensRequired": [
    {
      "assetType": "eip155:42161/erc20:0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "amount": "10000"
    }
  ],
  "fromAssetId": "ob:usdc"
}'
{
  "accounts": [
    {
      "type": "solana",
      "accountAddress": "EB8Hi4LoqUVCGUPJ2y9MsHbEsJQJvmpQRUWrLpjEZxC6"
    },
    {
      "type": "kernel-v3.3-ecdsa",
      "accountAddress": "0xDb69A4Ded06AaD92C69c42232b691CFD8bF347e8",
      "signerAddress": "0xDb69A4Ded06AaD92C69c42232b691CFD8bF347e8",
      "deploymentType": "EIP7702"
    }
  ],
  "chainOperation": {
    "userOp": {
      "sender": "0xdb69a4ded06aad92c69c42232b691cfd8bf347e8",
      "nonce": "913479994650515257524606220465835134743662536739504622017003723935449089",
      "callData": "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",
      "callGasLimit": "2831389",
      "verificationGasLimit": "46313",
      "preVerificationGas": "0",
      "maxFeePerGas": "0",
      "maxPriorityFeePerGas": "0",
      "paymaster": "0xa784e6482bd5edbfe5991b18cbd545ebd46e1cc4",
      "paymasterVerificationGasLimit": "13011",
      "paymasterPostOpGasLimit": "0",
      "paymasterData": "0x",
      "signature": "0x"
    },
    "typedDataToSign": {
      "domain": {
        "name": "RoleBasedECDSAValidator",
        "version": "1.4.3",
        "chainId": 42161,
        "verifyingContract": "0xA24bD06230f3F54e5bf266AE7A41750eE3b789FA"
      },
      "types": {
        "Approve": [
          {
            "name": "callDataAndNonceHash",
            "type": "bytes32"
          }
        ]
      },
      "primaryType": "Approve",
      "message": {
        "callDataAndNonceHash": "0x68752061ab5e1f42561b192a3ea5e70c4005b62a7ea4698b14a35ab0004f6687"
      }
    },
    "assetType": "eip155:42161/erc20:0xaf88d065e77c8cc2239327c5edb3a432268e5831",
    "amount": "10000"
  },
  "tamperProofSignature": "0x6316c2fe49d51af45b7bb7bb311395595fe29b7bd9de2e219cba0942fda2461c1c3f19108d6f391cd02c7cdc7d218ff0945d32ba784be1357b3c954ff7ae254e1c"
}

Authorizations

​
x-api-key
string
header
required

The OneBalance API uses API keys to authenticate requests. All API requests require authentication using an API key passed in the x-api-key header:

curl -X 'GET' \
  'https://be.onebalance.io/api/path-to/endpoint' \
  -H 'x-api-key: ${ONEBALANCE_API_KEY}' \
  ...

A public API key is available for testing purposes with limited usage: 42bb629272001ee1163ca0dbbbc07bcbb0ef57a57baf16c4b1d4672db4562c11.

All API requests must be made over HTTPS. Calls made over plain HTTP will fail. API requests without authentication will also fail.

Learn how to generate API access tokens at OneBalance Docs.

Body

application/json

Details of the accounts, calls, and token requirements.

V3 prepare call request with multi-account support for cross-chain contract calls

Response

200
application/json

Call quote prepared successfully

V3 response from prepare-call-quote containing all necessary data to execute contract calls with multi-account support