curl --request POST \
  --url https://api.bigdata.com/v1/knowledge-graph/funds \
  --header 'Content-Type: application/json' \
  --header 'X-API-KEY: <api-key>' \
  --data '
{
  "query": "Vanguard",
  "types": [
    "PUBLIC"
  ],
  "countries": [
    "US"
  ],
  "sectors": [
    "Financials"
  ]
}
'

import requests

url = "https://api.bigdata.com/v1/knowledge-graph/funds"

payload = {
    "query": "Vanguard",
    "types": ["PUBLIC"],
    "countries": ["US"],
    "sectors": ["Financials"]
}
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({
    query: 'Vanguard',
    types: ['PUBLIC'],
    countries: ['US'],
    sectors: ['Financials']
  })
};

fetch('https://api.bigdata.com/v1/knowledge-graph/funds', 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/knowledge-graph/funds",
  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([
    'query' => 'Vanguard',
    'types' => [
        'PUBLIC'
    ],
    'countries' => [
        'US'
    ],
    'sectors' => [
        'Financials'
    ]
  ]),
  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/knowledge-graph/funds"

	payload := strings.NewReader("{\n  \"query\": \"Vanguard\",\n  \"types\": [\n    \"PUBLIC\"\n  ],\n  \"countries\": [\n    \"US\"\n  ],\n  \"sectors\": [\n    \"Financials\"\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/knowledge-graph/funds")
  .header("X-API-KEY", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"query\": \"Vanguard\",\n  \"types\": [\n    \"PUBLIC\"\n  ],\n  \"countries\": [\n    \"US\"\n  ],\n  \"sectors\": [\n    \"Financials\"\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.bigdata.com/v1/knowledge-graph/funds")

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  \"query\": \"Vanguard\",\n  \"types\": [\n    \"PUBLIC\"\n  ],\n  \"countries\": [\n    \"US\"\n  ],\n  \"sectors\": [\n    \"Financials\"\n  ]\n}"

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

{
  "results": [
    {
      "id": "K5RNW6",
      "name": "Vanguard Windsor Funds - Vanguard Windsor Fund",
      "description": "Acts as Open-End Investment Fund/Unit Trust.",
      "type": "PUBLIC",
      "country": "US",
      "sector": "Financials"
    }
  ],
  "metadata": {
    "request_id": "2a25111e-0043-4fe2-946e-668aa5af928a",
    "timestamp": "2026-09-09T13:24:45.163695+00:00"
  },
  "usage": {
    "knowledge_graph_tokens": 1
  }
}