curl --request POST \
  --url https://api.bigdata.com/v1/fixed-income/corporate/isin/query \
  --header 'Content-Type: application/json' \
  --header 'X-API-KEY: <api-key>' \
  --data '
{
  "identifier": {
    "type": "isin",
    "value": [
      "US037833EQ92",
      "US404280DT33"
    ]
  }
}
'

import requests

url = "https://api.bigdata.com/v1/fixed-income/corporate/isin/query"

payload = { "identifier": {
        "type": "isin",
        "value": ["US037833EQ92", "US404280DT33"]
    } }
headers = {
    "X-API-KEY": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'X-API-KEY': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({identifier: {type: 'isin', value: ['US037833EQ92', 'US404280DT33']}})
};

fetch('https://api.bigdata.com/v1/fixed-income/corporate/isin/query', 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.bigdata.com/v1/fixed-income/corporate/isin/query",
  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([
    'identifier' => [
        'type' => 'isin',
        'value' => [
                'US037833EQ92',
                'US404280DT33'
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "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"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.bigdata.com/v1/fixed-income/corporate/isin/query"

	payload := strings.NewReader("{\n  \"identifier\": {\n    \"type\": \"isin\",\n    \"value\": [\n      \"US037833EQ92\",\n      \"US404280DT33\"\n    ]\n  }\n}")

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

	req.Header.Add("X-API-KEY", "<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://api.bigdata.com/v1/fixed-income/corporate/isin/query")
  .header("X-API-KEY", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"identifier\": {\n    \"type\": \"isin\",\n    \"value\": [\n      \"US037833EQ92\",\n      \"US404280DT33\"\n    ]\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.bigdata.com/v1/fixed-income/corporate/isin/query")

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

request = Net::HTTP::Post.new(url)
request["X-API-KEY"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"identifier\": {\n    \"type\": \"isin\",\n    \"value\": [\n      \"US037833EQ92\",\n      \"US404280DT33\"\n    ]\n  }\n}"

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

{
  "results": {
    "US037833EQ92": {
      "issuer_name": "Apple Inc",
      "issuer_rp_entity_id": "D8442A",
      "description": "3.95% NT REDEEM 08/08/2052 USD 2000",
      "issue_date": "2022-08-08",
      "maturity_date": "2052-08-08",
      "coupon": 3.95,
      "interest_payment_frequency": "semi-annual",
      "currency": "USD",
      "issue_amount_mm": 1750,
      "outstanding_amount_mm": 1750,
      "rank": "senior",
      "status": "active",
      "bond_type": "note",
      "is_callable": true,
      "is_secured": false,
      "is_guaranteed": true
    }
  },
  "errors": [
    {
      "message": "<string>"
    }
  ],
  "metadata": {
    "request_id": "<string>",
    "timestamp": "<string>"
  },
  "sources": [
    {
      "id": "CA9FA3",
      "name": "Corporate Fundamentals"
    }
  ],
  "usage": {}
}

{
  "message": "Bad Request Error",
  "statusCode": 400
}

{
  "message": "Too many requests. Please try again later.",
  "statusCode": 429
}

{
  "message": "Internal Server Error",
  "statusCode": 500
}