Parse transaction

POST

https://ksmassethub-playbook.nownodes.io/v1/transaction/parse

Authorizations

ApiKeyAuthApiKeyAuth

api-key string

NOWNodes API key passed in the api-key header.

Changed. Transactions in the v4 format are now decoded correctly on runtimes that expose several transaction extension versions; before, they failed to decode. Request and response fields are unchanged.

Decode a raw transaction and return its components without executing or submitting it. Returns the decoded pallet/method, call arguments, signature info, nonce, tip, era, and hash. Note: This endpoint uses the chain's current (latest) metadata for decoding. Transactions created for older runtime versions may fail to decode if the extrinsic format has changed.

Body

application/json

Transaction with 'tx' field containing hex-encoded extrinsic

Request body for transaction parsing.

txstring

Hex-encoded extrinsic with optional 0x prefix.

Response

200OK

Parsed transaction

400Bad Request

Invalid transaction

500Internal Server Error

Internal server error

Parse transaction

curl -X POST 'https://ksmassethub-playbook.nownodes.io/v1/transaction/parse' \
  -H 'Content-Type: application/json' \
  -d '{
    "tx": "0x4902840004316d995f..."
  }'

const response = await fetch('https://ksmassethub-playbook.nownodes.io/v1/transaction/parse', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
      "tx": "0x4902840004316d995f..."
    }),
});

const data = await response.json();

require 'net/http'
require 'json'

uri = URI('https://ksmassethub-playbook.nownodes.io/v1/transaction/parse')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request.body = '{
    "tx": "0x4902840004316d995f..."
  }'

response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) { |http| http.request(request) }
data = JSON.parse(response.body)

import requests

payload = {
  "tx": "0x4902840004316d995f..."
}

response = requests.post('https://ksmassethub-playbook.nownodes.io/v1/transaction/parse', json=payload)
data = response.json()

const response = await fetch('https://ksmassethub-playbook.nownodes.io/v1/transaction/parse', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
      "tx": "0x4902840004316d995f..."
    }),
});

const data = await response.json();

const endpoint = "https://ksmassethub-playbook.nownodes.io/v1/transaction/parse";
const apiKey = "YOUR_API_KEY";

async function nownodesRequest(payload) {
  const response = await fetch(endpoint, {
    method: "POST",
    headers: {
      "Content-Type": "application/json",
      "api-key": apiKey,
    },
    body: JSON.stringify(payload),
  });

  return response.json();
}

const result = await nownodesRequest({
    "tx": "0x4902840004316d995f..."
  });
console.log(result);

const response = await fetch('https://ksmassethub-playbook.nownodes.io/v1/transaction/parse', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
      "tx": "0x4902840004316d995f..."
    }),
});

const data = await response.json();

import requests

payload = {
  "tx": "0x4902840004316d995f..."
}

response = requests.post('https://ksmassethub-playbook.nownodes.io/v1/transaction/parse', json=payload)
data = response.json()

require 'net/http'
require 'json'

uri = URI('https://ksmassethub-playbook.nownodes.io/v1/transaction/parse')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request.body = '{
    "tx": "0x4902840004316d995f..."
  }'

response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) { |http| http.request(request) }
data = JSON.parse(response.body)

Request Body

{
  "tx": "0x4902840004316d995f..."
}

{
  "args": {},
  "era": {},
  "hash": "0x1234567890abcdef...",
  "isSigned": true,
  "method": {
    "method": "transferAllowDeath",
    "pallet": "balances"
  },
  "nonce": "42",
  "signature": {
    "signature": "0xa24152685f52e4726466e80247d965bb3d349637fc8a1ea6f7cc1451ddec98b5...",
    "signer": {
      "id": "5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY"
    }
  },
  "tip": "0"
}

{
  "cause": "string",
  "code": 400,
  "error": "Failed to parse transaction.",
  "stack": "string",
  "transaction": "string"
}