curl --request POST \
  --url https://api.bigdata.com/v1/private-companies/query \
  --header 'Content-Type: application/json' \
  --header 'X-API-KEY: <api-key>' \
  --data '
{
  "identifier": {
    "type": "rp_entity_id",
    "value": [
      "UWCVKI",
      "98A8F2"
    ]
  }
}
'

import requests

url = "https://api.bigdata.com/v1/private-companies/query"

payload = { "identifier": {
        "type": "rp_entity_id",
        "value": ["UWCVKI", "98A8F2"]
    } }
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: 'rp_entity_id', value: ['UWCVKI', '98A8F2']}})
};

fetch('https://api.bigdata.com/v1/private-companies/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/private-companies/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' => 'rp_entity_id',
        'value' => [
                'UWCVKI',
                '98A8F2'
        ]
    ]
  ]),
  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/private-companies/query"

	payload := strings.NewReader("{\n  \"identifier\": {\n    \"type\": \"rp_entity_id\",\n    \"value\": [\n      \"UWCVKI\",\n      \"98A8F2\"\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/private-companies/query")
  .header("X-API-KEY", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"identifier\": {\n    \"type\": \"rp_entity_id\",\n    \"value\": [\n      \"UWCVKI\",\n      \"98A8F2\"\n    ]\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.bigdata.com/v1/private-companies/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\": \"rp_entity_id\",\n    \"value\": [\n      \"UWCVKI\",\n      \"98A8F2\"\n    ]\n  }\n}"

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

{
  "results": [
    {
      "rp_entity_id": "UWCVKI",
      "name": "OpenAI",
      "legal_name": "OpenAI OpCo, LLC",
      "short_description": "OpenAI is an AI research and deployment company that develops advanced AI models, including ChatGPT.",
      "website": "https://openai.com",
      "operating_status": "active",
      "company_type": "for_profit",
      "ipo_status": "private",
      "founded_on": {
        "value": "2015-12-08",
        "precision": "day"
      },
      "employee_range": [
        1001,
        5000
      ],
      "categories": [
        "Agentic AI",
        "AI Infrastructure",
        "Artificial Intelligence (AI)",
        "Foundational AI",
        "Generative AI",
        "Information Services",
        "Information Technology",
        "Machine Learning",
        "Natural Language Processing",
        "SaaS"
      ],
      "headquarters": {
        "street_1": "1455 3rd Street",
        "postal_code": "94158",
        "city": "San Francisco",
        "region": "California",
        "region_code": "CA",
        "country": "United States",
        "country_code": "US"
      },
      "funding_total": {
        "value": 201125120000,
        "currency": "USD",
        "value_usd": 201125120000
      },
      "num_funding_rounds": 14,
      "last_funding_total": {
        "value": 75000000,
        "currency": "USD",
        "value_usd": 75000000
      },
      "last_funding_type": "series_unknown",
      "last_funding_date": {
        "value": "2026-04-22"
      },
      "valuation": {
        "value": 852000000000,
        "currency": "USD",
        "value_usd": 852000000000
      },
      "valuation_date": {
        "value": "2026-02-27"
      },
      "activity_rank": {
        "overall_rank": 6,
        "change_7d": 0,
        "change_30d": -0.9,
        "change_90d": 1.5
      }
    },
    {
      "rp_entity_id": "98A8F2",
      "name": "Stripe",
      "legal_name": "Stripe, LLC.",
      "short_description": "Stripe enables businesses to accept payments, manage billing, and embed financial services into digital platforms.",
      "website": "https://stripe.com",
      "operating_status": "active",
      "company_type": "for_profit",
      "ipo_status": "private",
      "founded_on": {
        "value": "2010-01-01",
        "precision": "year"
      },
      "employee_range": [
        5001,
        10000
      ],
      "categories": [
        "Billing",
        "Compliance",
        "E-Commerce Platforms",
        "Finance",
        "Financial Services",
        "FinTech",
        "Fraud Detection",
        "Payments",
        "Software"
      ],
      "headquarters": {
        "street_1": "354 Oyster Point Rd.",
        "postal_code": "94080",
        "city": "South San Francisco",
        "region": "California",
        "region_code": "CA",
        "country": "United States",
        "country_code": "US"
      },
      "funding_total": {
        "value": 10440247725,
        "currency": "USD",
        "value_usd": 10440247725
      },
      "num_funding_rounds": 25,
      "last_funding_type": "secondary_market",
      "last_funding_date": {
        "value": "2026-03-09"
      },
      "valuation": {
        "value": 159000000000,
        "currency": "USD",
        "value_usd": 159000000000
      },
      "valuation_date": {
        "value": "2026-02-24"
      },
      "activity_rank": {
        "overall_rank": 53,
        "change_7d": 3.6,
        "change_30d": -1.8,
        "change_90d": 6.2
      }
    }
  ],
  "metadata": {
    "request_id": "123e4567-e89b-12d3-a456-426614174000",
    "timestamp": "2026-10-05T09:30:00+00:00"
  }
}

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

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

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