curl --request GET \
  --url https://api-v2.hayinsights.com/openapi/v1/macro/fdi/vn/flows \
  --header 'X-API-Key: <api-key>'

import requests

url = "https://api-v2.hayinsights.com/openapi/v1/macro/fdi/vn/flows"

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://api-v2.hayinsights.com/openapi/v1/macro/fdi/vn/flows', 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-v2.hayinsights.com/openapi/v1/macro/fdi/vn/flows",
  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://api-v2.hayinsights.com/openapi/v1/macro/fdi/vn/flows"

	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://api-v2.hayinsights.com/openapi/v1/macro/fdi/vn/flows")
  .header("X-API-Key", "<api-key>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api-v2.hayinsights.com/openapi/v1/macro/fdi/vn/flows")

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

{
  "success": true,
  "statusCode": 200,
  "data": {
    "country": "vn",
    "unit": "USD",
    "unitScale": 1000000,
    "displayUnit": "Million USD",
    "source": "Ministry of Finance (FIA)",
    "latestPeriod": "2026-09",
    "months": 2,
    "from": "2026-08",
    "to": "2026-09",
    "series": [
      {
        "period": "2026-08",
        "registered": 3120.5,
        "realized": 2205,
        "registeredYtd": 26389.8,
        "realizedYtd": 16790,
        "registeredYoy": 9.8,
        "cutoffDay": 31,
        "source": "mof"
      },
      {
        "period": "2026-09",
        "registered": 2150.3,
        "realized": 2010,
        "registeredYtd": 28540.1,
        "realizedYtd": 18800,
        "registeredYoy": 12.4,
        "cutoffDay": 30,
        "source": "mof"
      }
    ],
    "cumulative": [
      {
        "year": 2026,
        "registered": [
          4330.1,
          6900.2,
          10980
        ],
        "realized": [
          1510,
          3100,
          5410
        ]
      }
    ]
  },
  "meta": {
    "timestamp": "2026-10-16T04:00:00.000Z"
  }
}

{
  "success": false,
  "statusCode": 400,
  "error": {
    "code": "INTERNAL_ERROR",
    "message": [
      "Invalid type parameter. Must be \"gdp\", \"cpi\", \"pce\", or \"import-export\"",
      "Type parameter is required"
    ]
  },
  "meta": {
    "error": "Bad Request",
    "statusCode": 400,
    "timestamp": "2026-06-19T08:34:08.081Z"
  }
}

{
  "success": false,
  "statusCode": 401,
  "error": {
    "code": "API_KEY_INVALID",
    "message": "Invalid API key"
  },
  "meta": {
    "timestamp": "2026-06-19T08:34:08.023Z"
  }
}

{
  "success": false,
  "statusCode": 403,
  "error": {
    "code": "FEATURE_NOT_IN_PLAN",
    "message": "Your plan does not include this feature"
  },
  "meta": {
    "timestamp": "2026-06-19T08:34:08.100Z"
  }
}

{
  "success": false,
  "statusCode": 404,
  "error": {
    "code": "INTERNAL_ERROR",
    "message": "Commodity 'zzz-nope' not found"
  },
  "meta": {
    "error": "Not Found",
    "statusCode": 404,
    "timestamp": "2026-06-19T08:34:08.205Z"
  }
}

{
  "success": false,
  "statusCode": 429,
  "error": {
    "code": "RATE_LIMIT_EXCEEDED",
    "message": "Rate limit exceeded"
  },
  "meta": {
    "timestamp": "2026-06-19T08:34:09.000Z"
  }
}

{
  "success": false,
  "statusCode": 500,
  "error": {
    "code": "INTERNAL_ERROR",
    "message": "Internal server error"
  },
  "meta": {
    "timestamp": "2026-06-19T08:34:10.000Z"
  }
}