Get Transaction Payload

This get Transaction Payload using this method.

API Specification

Get Transaction Payload

POST https://api.krypcore.com/api/v0/gasless/getTransactionPayload

Get Transaction Payload under the given instance.

Headers

Name	Type	Description
Authorization*	String	User Auth key obtained

Request Body

Name	Type	Description
dAppId*	String	The Dapp ID associated with the application
chainId*	String	The Chain ID representing the blockchain network
userAddress*	String	Wallet address of the user initiating the transaction
contractAddress*	String	Address of the contract that has been deployed and added to the whitelist
contractAbi*	String	The ABI of the contract, providing information about its methods and data structures
method*	String	The specific method of the contract for which the transaction payload is required
args*	String	Additional arguments required for the specified contract method

200: OK SUCCESS

{
    "dataToSign": {
        "domain": {
            "chainId": 80001,
            "name": "MinimalForwarder",
            "verifyingContract": "0xdB4dFB11b6B74487c744c251d017xxxxxxxxxx",
            "version": "0.0.1"
        },
        "message": {
            "data": "0x7698xxxx",
            "from": "0x313bA6399d60ff7c2ee8bCb01c2dcxxxxxxxxxx",
            "gas": 43562,
            "nonce": 0,
            "to": "0x362149525adee7A0B20212D76Fad073xxxxxxxxxx",
            "value": 0
        },
        "primaryType": "ForwardRequest",
        "types": {
            "EIP712Domain": [
                {
                    "name": "name",
                    "type": "string"
                },
                {
                    "name": "version",
                    "type": "string"
                },
                {
                    "name": "chainId",
                    "type": "uint256"
                },
                {
                    "name": "verifyingContract",
                    "type": "address"
                }
            ],
            "ForwardRequest": [
                {
                    "name": "from",
                    "type": "address"
                },
                {
                    "name": "to",
                    "type": "address"
                },
                {
                    "name": "value",
                    "type": "uint256"
                },
                {
                    "name": "gas",
                    "type": "uint256"
                },
                {
                    "name": "nonce",
                    "type": "uint256"
                },
                {
                    "name": "data",
                    "type": "bytes"
                }
            ]
        }
    },
    "request": {
        "data": "0x769xxxxx",
        "from": "0x313bA6399d60ff7c2ee8bCb01c2dc9C5e1xxxxxx",
        "gas": 43562,
        "nonce": 0,
        "to": "0x362149525adee7A0B20212D76Fad073CcDbxxxxx",
        "value": 0
    }
}

401: Unauthorized Failure in authentication

{
    "message": "Invalid API key in request"
}

Take a look at how you might call this method using our official libraries, or via curl

curl

curl --location 'https://api.krypcore.com/api/v0/gasless/getTransactionPayload' \
--header 'Authorization: 03374415-xxxx-xxxx-xxxx-1277d243034e' \
--header 'Content-Type: application/json' \
--data '{
    "dAppId": "DEV_DEMO_PACE_46_xxxxxxx",
    "chainId": 80001,
    "userAddress": "0x313bA6399d60ff7c2ee8bCbxxxxxxxxxxxxx",
    "contractAddress": "0x362149525adee7A0B2021xxxxxxxxxxxxxxxxxx",
    "contractAbi": "BASE64 ABI",
    "method": "mintNft",
    "args": []
}'

Node.js (Fetch)

var myHeaders = new Headers();
myHeaders.append("Authorization", "03374415-xxxx-xxxx-xxxx-1277d243034e");
myHeaders.append("Content-Type", "application/json");

var raw = JSON.stringify({
  "dAppId": "DEV_DEMO_PACE_46_xxxxxxx",
  "chainId": 80001,
  "userAddress": "0x313bA6399d60ff7c2ee8bCbxxxxxxxxxxxxx",
  "contractAddress": "0x362149525adee7A0B2021xxxxxxxxxxxxxxxxxx",
  "contractAbi": "BASE64 ABI",
  "method": "mintNft",
  "args": []
});

var requestOptions = {
  method: 'POST',
  headers: myHeaders,
  body: raw,
  redirect: 'follow'
};

fetch("https://api.krypcore.com/api/v0/gasless/getTransactionPayload", requestOptions)
  .then(response => response.text())
  .then(result => console.log(result))
  .catch(error => console.log('error', error));

Python

import requests
import json

url = "https://api.krypcore.com/api/v0/gasless/getTransactionPayload"

payload = json.dumps({
  "dAppId": "DEV_DEMO_PACE_46_xxxxxxx",
  "chainId": 80001,
  "userAddress": "0x313bA6399d60ff7c2ee8bCbxxxxxxxxxxxxx",
  "contractAddress": "0x362149525adee7A0B2021xxxxxxxxxxxxxxxxxx",
  "contractAbi": "BASE64 ABI",
  "method": "mintNft",
  "args": []
})
headers = {
  'Authorization': '03374415-xxxx-xxxx-xxxx-1277d243034e',
  'Content-Type': 'application/json'
}

response = requests.request("POST", url, headers=headers, data=payload)

print(response.text)

Golang

package main

import (
  "fmt"
  "strings"
  "net/http"
  "io/ioutil"
)

func main() {

  url := "https://api.krypcore.com/api/v0/gasless/getTransactionPayload"
  method := "POST"

  payload := strings.NewReader(`{`+"
"+`
    "dAppId": "DEV_DEMO_PACE_46_xxxxxxx",`+"
"+`
    "chainId": 80001,`+"
"+`
    "userAddress": "0x313bA6399d60ff7c2ee8bCbxxxxxxxxxxxxx",`+"
"+`
    "contractAddress": "0x362149525adee7A0B2021xxxxxxxxxxxxxxxxxx",`+"
"+`
    "contractAbi": "BASE64 ABI",`+"
"+`
    "method": "mintNft",`+"
"+`
    "args": []`+"
"+`
}`)

  client := &http.Client {
  }
  req, err := http.NewRequest(method, url, payload)

  if err != nil {
    fmt.Println(err)
    return
  }
  req.Header.Add("Authorization", "03374415-xxxx-xxxx-xxxx-1277d243034e")
  req.Header.Add("Content-Type", "application/json")

  res, err := client.Do(req)
  if err != nil {
    fmt.Println(err)
    return
  }
  defer res.Body.Close()

  body, err := ioutil.ReadAll(res.Body)
  if err != nil {
    fmt.Println(err)
    return
  }
  fmt.Println(string(body))
}