curl --request POST \
  --url https://api.waterfall.io/v1/search/company \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "industries": [
    "software development"
  ],
  "location_countries": [
    "United States"
  ],
  "sizes": [
    "201-500"
  ],
  "page_number": 1,
  "page_size": 20
}
'

import requests

url = "https://api.waterfall.io/v1/search/company"

payload = {
    "industries": ["software development"],
    "location_countries": ["United States"],
    "sizes": ["201-500"],
    "page_number": 1,
    "page_size": 20
}
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({
    industries: ['software development'],
    location_countries: ['United States'],
    sizes: ['201-500'],
    page_number: 1,
    page_size: 20
  })
};

fetch('https://api.waterfall.io/v1/search/company', 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.waterfall.io/v1/search/company",
  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([
    'industries' => [
        'software development'
    ],
    'location_countries' => [
        'United States'
    ],
    'sizes' => [
        '201-500'
    ],
    'page_number' => 1,
    'page_size' => 20
  ]),
  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.waterfall.io/v1/search/company"

	payload := strings.NewReader("{\n  \"industries\": [\n    \"software development\"\n  ],\n  \"location_countries\": [\n    \"United States\"\n  ],\n  \"sizes\": [\n    \"201-500\"\n  ],\n  \"page_number\": 1,\n  \"page_size\": 20\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.waterfall.io/v1/search/company")
  .header("x-api-key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"industries\": [\n    \"software development\"\n  ],\n  \"location_countries\": [\n    \"United States\"\n  ],\n  \"sizes\": [\n    \"201-500\"\n  ],\n  \"page_number\": 1,\n  \"page_size\": 20\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.waterfall.io/v1/search/company")

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  \"industries\": [\n    \"software development\"\n  ],\n  \"location_countries\": [\n    \"United States\"\n  ],\n  \"sizes\": [\n    \"201-500\"\n  ],\n  \"page_number\": 1,\n  \"page_size\": 20\n}"

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