sendrawtransaction

POST

https://btc.nownodes.io/

Authorizations

ApiKeyAuthApiKeyAuth

api-key string

NOWNodes API key passed in the api-key header.

Submits a raw transaction (hex-encoded string) to the mempool and broadcasts it to the network. Returns the transaction ID (txid) if accepted.

Body

application/json

Submits a raw transaction (hex-encoded string) to the mempool and broadcasts it to the network. Returns the transaction ID (txid) if accepted.

Request payload containing the documented method parameters and client request identifier.

jsonrpcstringrequired

JSON-RPC protocol version.

idstringrequired

Client-provided request identifier echoed in the response.

methodstringsendrawtransactionrequired

JSON-RPC method name.

paramsArray<string | number | boolean>required

Parameters:

hexstring (string, required): The raw transaction in hex format.
maxfeerate (number or boolean, optional): Reject transactions with fees higher than this (BTC/KB). Use false to disable check.

Show child attributes

Single entry in the params array.

One of

JSON-RPC method parameters.

string

JSON-RPC method parameters.

number

JSON-RPC method parameters.

boolean

Response

200OK

Transaction accepted and broadcasted

401Unauthorized

Unauthorized: API key is present but rejected by the NOWNodes gateway.

405Method Not Allowed

Method Not Allowed. Returned by the NOWNodes gateway for malformed or unsupported gateway-level requests.

422Unprocessable Entity

Missing API key. The NOWNodes gateway returns plain text for this error.

500Internal Server Error

Internal Server Error

sendrawtransaction

curl -X POST 'https://btc.nownodes.io/' \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "1.0",
    "id": "curltest",
    "method": "sendrawtransaction",
    "params": [
      "0200000001abcd...00000000",
      false
    ]
  }'

import { JsonRpcProvider } from "ethers";

const provider = new JsonRpcProvider("https://btc.nownodes.io/");
const result = await provider.send("sendrawtransaction", [
  "0200000001abcd...00000000",
  false
]);
console.log(result);

require 'eth'
require 'json'
require 'net/http'

uri = URI('https://btc.nownodes.io/')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request.body = '{
  "jsonrpc": "2.0",
  "method": "sendrawtransaction",
  "params": [
    "0200000001abcd...00000000",
    false
  ],
  "id": 1
}'

response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) do |http|
  http.request(request)
end

puts JSON.parse(response.body)

from web3 import Web3

w3 = Web3(Web3.HTTPProvider("https://btc.nownodes.io/"))
response = w3.provider.make_request("sendrawtransaction", [
  "0200000001abcd...00000000",
  false
])
print(response)

import { createPublicClient, http } from "viem";

const client = createPublicClient({
  transport: http("https://btc.nownodes.io/"),
});

const result = await client.request({
  method: "sendrawtransaction",
  params: [
  "0200000001abcd...00000000",
  false
],
});

console.log(result);

const endpoint = "https://btc.nownodes.io/";
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({ jsonrpc: "2.0", method: "sendrawtransaction", params: [
  "0200000001abcd...00000000",
  false
], id: 1 });
console.log(result);

const response = await fetch('https://btc.nownodes.io/', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
      "jsonrpc": "1.0",
      "id": "curltest",
      "method": "sendrawtransaction",
      "params": [
        "0200000001abcd...00000000",
        false
      ]
    }),
});

const data = await response.json();

import requests

payload = {
  "jsonrpc": "1.0",
  "id": "curltest",
  "method": "sendrawtransaction",
  "params": [
    "0200000001abcd...00000000",
    false
  ]
}

response = requests.post('https://btc.nownodes.io/', json=payload)
data = response.json()

require 'net/http'
require 'json'

uri = URI('https://btc.nownodes.io/')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request.body = '{
    "jsonrpc": "1.0",
    "id": "curltest",
    "method": "sendrawtransaction",
    "params": [
      "0200000001abcd...00000000",
      false
    ]
  }'

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

Request Body

{
  "jsonrpc": "1.0",
  "id": "curltest",
  "method": "sendrawtransaction",
  "params": [
    "0200000001abcd...00000000",
    false
  ]
}

{
  "result": "e1e372f70f639a800e4b77c1b45d26f84daa4d82ef8243ebb6b0a31e2921ad2a",
  "error": null,
  "id": 1
}

{
  "result": null,
  "error": {
    "code": -3,
    "message": "Invalid parameter"
  },
  "id": 1
}

Unknown API_key

Method Not Allowed

Missing API_key

{
  "result": "e1e372f70f639a800e4b77c1b45d26f84daa4d82ef8243ebb6b0a31e2921ad2a",
  "error": {
    "code": -28,
    "message": "Service temporarily unavailable"
  },
  "id": "curltest"
}

Documentation

How to migrate to NOWNodes

sendrawtransaction

Authorizations

Body

Response