Find an API

Copycurl -X GET "https://clinicaltrials.gov/api/v2/studies?format=json&pageSize=5&query.cond=COVID-19&query.intr=vaccine"

Copyimport requests
params = {
    "format": "json",
    "pageSize": "5",
    "query.cond": "COVID-19",
    "query.intr": "vaccine"
}
response = requests.get(
    "https://clinicaltrials.gov/api/v2/studies",
    params=params,
)
print(response.json())

Copyconst url = new URL('https://clinicaltrials.gov/api/v2/studies');
url.searchParams.set('format', 'json');
url.searchParams.set('pageSize', '5');
url.searchParams.set('query.cond', 'COVID-19');
url.searchParams.set('query.intr', 'vaccine');

const response = await fetch(url); 
const data = await response.json();
console.log(data);

Copypackage main

import (
	"fmt"
	"io"
	"net/http"
	"net/url"
)

func main() {
	baseURL, _ := url.Parse("https://clinicaltrials.gov/api/v2/studies")
	q := baseURL.Query()
	q.Set("format", "json")
	q.Set("pageSize", "5")
	q.Set("query.cond", "COVID-19")
	q.Set("query.intr", "vaccine")
	baseURL.RawQuery = q.Encode()
	targetURL := baseURL.String()
	req, _ := http.NewRequest("GET", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}

Copyrequire "net/http"
require "json"

uri = URI("https://clinicaltrials.gov/api/v2/studies")
uri.query = URI.encode_www_form({
  "format" => "json",
  "pageSize" => "5",
  "query.cond" => "COVID-19",
  "query.intr" => "vaccine"
})

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Get.new(uri)

res = http.request(req)
puts JSON.parse(res.body)

Copy<?php
$url = "https://clinicaltrials.gov/api/v2/studies?" . http_build_query([
    "format" => "json",
    "pageSize" => "5",
    "query.cond" => "COVID-19",
    "query.intr" => "vaccine"
]);
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));