curl -X POST https://api.relayer.fi/v1/transactions/broadcast/$TRANSACTION_ID/retry \
  -H "Authorization: ApiKey $RELAYER_API_KEY"

// Retry a transaction that failed at chain submission (transient: insufficient
// gas, mempool full, RPC hiccup). Re-broadcasts the existing signed tx — does
// NOT re-sign or change anything else.
const response = await fetch(
  `https://api.relayer.fi/v1/transactions/broadcast/${transactionId}/retry`,
  {
    method: "POST",
    headers: { Authorization: `ApiKey ${process.env.RELAYER_API_KEY}` },
  },
);

import requests

url = "https://testnet.relayer.fi/v1/transactions/broadcast/{transactionId}/retry"

payload = { "rpcUrl": "https://api.avax.network/ext/bc/C/rpc" }
headers = {
    "Authorization": "<api-key>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({rpcUrl: 'https://api.avax.network/ext/bc/C/rpc'})
};

fetch('https://testnet.relayer.fi/v1/transactions/broadcast/{transactionId}/retry', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://testnet.relayer.fi/v1/transactions/broadcast/{transactionId}/retry",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'rpcUrl' => 'https://api.avax.network/ext/bc/C/rpc'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: <api-key>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

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

func main() {

	url := "https://testnet.relayer.fi/v1/transactions/broadcast/{transactionId}/retry"

	payload := strings.NewReader("{\n  \"rpcUrl\": \"https://api.avax.network/ext/bc/C/rpc\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "<api-key>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://testnet.relayer.fi/v1/transactions/broadcast/{transactionId}/retry")
  .header("Authorization", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"rpcUrl\": \"https://api.avax.network/ext/bc/C/rpc\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://testnet.relayer.fi/v1/transactions/broadcast/{transactionId}/retry")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Authorization"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"rpcUrl\": \"https://api.avax.network/ext/bc/C/rpc\"\n}"

response = http.request(request)
puts response.read_body

{
  "success": true,
  "message": "<string>",
  "statusCode": 123,
  "timestamp": "<string>",
  "data": {
    "transactionId": "tx-uuid-abc123",
    "txHash": "0x789...",
    "status": "broadcasted",
    "broadcastedAt": "2024-01-01T12:10:00Z"
  },
  "path": "<string>",
  "traceId": "<string>"
}