curl --request GET \
  --url https://api.meridian.example.com/v1/transactions/{id} \
  --header 'X-Meridian-Api-Key: <x-meridian-api-key>' \
  --header 'X-Meridian-Program-Id: <x-meridian-program-id>' \
  --header 'X-Meridian-Signature: <api-key>' \
  --header 'X-Meridian-Timestamp: <x-meridian-timestamp>'

import requests

url = "https://api.meridian.example.com/v1/transactions/{id}"

headers = {
    "X-Meridian-Program-Id": "<x-meridian-program-id>",
    "X-Meridian-Api-Key": "<x-meridian-api-key>",
    "X-Meridian-Timestamp": "<x-meridian-timestamp>",
    "X-Meridian-Signature": "<api-key>"
}

response = requests.get(url, headers=headers)

print(response.text)

const options = {
  method: 'GET',
  headers: {
    'X-Meridian-Program-Id': '<x-meridian-program-id>',
    'X-Meridian-Api-Key': '<x-meridian-api-key>',
    'X-Meridian-Timestamp': '<x-meridian-timestamp>',
    'X-Meridian-Signature': '<api-key>'
  }
};

fetch('https://api.meridian.example.com/v1/transactions/{id}', 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://api.meridian.example.com/v1/transactions/{id}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => [
    "X-Meridian-Api-Key: <x-meridian-api-key>",
    "X-Meridian-Program-Id: <x-meridian-program-id>",
    "X-Meridian-Signature: <api-key>",
    "X-Meridian-Timestamp: <x-meridian-timestamp>"
  ],
]);

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

curl_close($curl);

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

package main

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

func main() {

	url := "https://api.meridian.example.com/v1/transactions/{id}"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("X-Meridian-Program-Id", "<x-meridian-program-id>")
	req.Header.Add("X-Meridian-Api-Key", "<x-meridian-api-key>")
	req.Header.Add("X-Meridian-Timestamp", "<x-meridian-timestamp>")
	req.Header.Add("X-Meridian-Signature", "<api-key>")

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.get("https://api.meridian.example.com/v1/transactions/{id}")
  .header("X-Meridian-Program-Id", "<x-meridian-program-id>")
  .header("X-Meridian-Api-Key", "<x-meridian-api-key>")
  .header("X-Meridian-Timestamp", "<x-meridian-timestamp>")
  .header("X-Meridian-Signature", "<api-key>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.meridian.example.com/v1/transactions/{id}")

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

request = Net::HTTP::Get.new(url)
request["X-Meridian-Program-Id"] = '<x-meridian-program-id>'
request["X-Meridian-Api-Key"] = '<x-meridian-api-key>'
request["X-Meridian-Timestamp"] = '<x-meridian-timestamp>'
request["X-Meridian-Signature"] = '<api-key>'

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

{
  "transaction": {
    "id": "txn_01JVY8Y4N9X2M6S5Q7T1",
    "messageId": "msg_01JVY8Y4N9X2M6S5Q7T1",
    "source": {
      "type": "external_submission",
      "externalSubmission": {
        "id": "sub_01JVY8Y4N9X2M6S5Q7T1",
        "displayName": "Customer message submission"
      }
    },
    "type": "transfer",
    "createdAt": "2026-04-07T20:11:42Z",
    "updatedAt": "2026-04-07T20:12:05Z",
    "status": "PENDING",
    "statusReason": null,
    "externalId": "e2e-20260407-000123",
    "relatedTransactionId": null,
    "amounts": {
      "debit": {
        "amount": "125000.00",
        "currency": "USD"
      },
      "credit": {
        "amount": "124975.00",
        "currency": "USD"
      },
      "fees": [
        {
          "type": "NETWORK_FEE",
          "label": "Network fee",
          "amount": "25.00",
          "currency": "USD"
        }
      ],
      "exchangeRate": "1.0000"
    },
    "debitInstrument": {
      "type": "ORIGINATOR",
      "originator": {
        "displayName": "Northwind Imports LLC",
        "accountNumber": "****9021"
      }
    },
    "creditInstrument": {
      "type": "BENEFICIARY_ACCOUNT",
      "beneficiaryAccount": {
        "id": "bfa_01JVY8Y4N9X2M6S5Q7T1",
        "displayName": "Contoso Treasury USD Account",
        "currency": "USD"
      }
    }
  }
}

{
  "validationErrors": [
    {
      "type": "InvalidFormat",
      "fieldRef": "<string>",
      "message": "Invalid format"
    }
  ],
  "message": "Request validation failed",
  "errorCode": "INVALID_REQUEST"
}

{
  "validationErrors": [
    {
      "type": "InvalidFormat",
      "fieldRef": "<string>",
      "message": "Invalid format"
    }
  ],
  "message": "Request validation failed",
  "errorCode": "INVALID_REQUEST"
}

{
  "validationErrors": [
    {
      "type": "InvalidFormat",
      "fieldRef": "<string>",
      "message": "Invalid format"
    }
  ],
  "message": "Request validation failed",
  "errorCode": "INVALID_REQUEST"
}

{
  "validationErrors": [
    {
      "type": "NotFound",
      "fieldRef": "id",
      "message": "No transaction was found for the supplied id"
    }
  ],
  "errorCode": "NOT_FOUND",
  "message": "Requested transaction was not found"
}