curl --request GET \
  --url https://app.herondata.io/api/end_users/{end_user_id_or_heron_id}/transactions \
  --header 'x-api-key: <api-key>'

import requests

url = "https://app.herondata.io/api/end_users/{end_user_id_or_heron_id}/transactions"

headers = {"x-api-key": "<api-key>"}

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

print(response.text)

const options = {method: 'GET', headers: {'x-api-key': '<api-key>'}};

fetch('https://app.herondata.io/api/end_users/{end_user_id_or_heron_id}/transactions', 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://app.herondata.io/api/end_users/{end_user_id_or_heron_id}/transactions",
  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-api-key: <api-key>"
  ],
]);

$response = curl_exec($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://app.herondata.io/api/end_users/{end_user_id_or_heron_id}/transactions"

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

	req.Header.Add("x-api-key", "<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://app.herondata.io/api/end_users/{end_user_id_or_heron_id}/transactions")
  .header("x-api-key", "<api-key>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://app.herondata.io/api/end_users/{end_user_id_or_heron_id}/transactions")

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

request = Net::HTTP::Get.new(url)
request["x-api-key"] = '<api-key>'

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

{
  "_meta": {
    "next_url": "<string>",
    "num_results": 123,
    "page": 123,
    "per_page": 123,
    "prev_url": "<string>"
  },
  "transactions_enriched": [
    {
      "amount": -42.42,
      "description": "GOOGLE *ADS12340929 [email protected] US",
      "account_id": "checking_account_202348",
      "account_number": "1234567890",
      "annotation": {
        "annotator": {},
        "category": {
          "label": "Rent",
          "heron_id": "ctg_C7MQHvrvFhY57PaBHDCMhM"
        },
        "confidence": 123,
        "model_version": "<string>"
      },
      "balance": 423,
      "counterparty": "GOOGLE",
      "currency": "USD",
      "data_source_account_heron_id": "dsa_8iGG8Waai9b4eoQyirQtH6",
      "data_source_heron_id": "dso_4xhxZ6LTMDNA2RWAm8HM2q",
      "end_user_id": "my_best_customer_203948",
      "features": {
        "description_clean": "GOOGLE ADS",
        "duplicate_of_id": "txn_DTTHYYdw4kbR6jh5Gt6ha6",
        "has_matching_transaction": true,
        "is_potential_duplicate": true,
        "is_recurring": true
      },
      "heron_id": "txn_2iEteZyVyf3wsRhDRKNEVf",
      "last_updated": "2026-08-04T23:13:36.760528+00:00",
      "merchant": {
        "name": "<string>",
        "url": "<string>",
        "categories": [
          {
            "code": "7311",
            "description": "Advertising services",
            "slug": "advertising_services"
          }
        ],
        "heron_id": "mrc_bFBmqov5VusTLgVvzbUJvU",
        "icon_url": "<string>",
        "is_priority": true,
        "logo_url": "<string>"
      },
      "reference_id": "my_favourite_transaction_231098",
      "request_id": "req_QLTQjyHVzqqtNBAvmAToK2",
      "timestamp": "2021-11-12T10:38:05Z",
      "transaction_code": "card"
    }
  ]
}