User Agent Parser

Parse user agent strings to extract browser name, version, operating system, device type, and bot detection.

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Overview

Use Cases

Analytics dashboards
Serving device-specific content
Bot filtering and traffic analysis
Browser compatibility reporting

Features

Browser name and version detection

Operating system and version detection

Device classification (desktop, mobile, tablet, bot)

Bot/crawler detection

API Endpoints

Parse User Agent

Parses a user agent string and returns structured information about the browser, OS, device, and bot status.

GET

https://api.requiems.xyz/v1/tech/useragent

Parameters

Name	Type	Required	Description
ua	`string`	Required	The user agent string to parse.

Try it out

Live Demo

Request

ua * (string)

The user agent string to parse.

Response Fields

Field	Type	Description
browser	`string`	Detected browser name (e.g. Chrome, Firefox, Safari, Edge, Opera, Internet Explorer, Other)
browser_version	`string`	Detected browser version (major.minor)
os	`string`	Detected operating system (e.g. Windows, macOS, Linux, Android, iOS, ChromeOS, Other)
os_version	`string`	Detected OS version (format varies by platform)
device	`string`	Device type — one of desktop, mobile, tablet, bot, or unknown
is_bot	`boolean`	True when the user agent matches a known bot or crawler pattern

Code Examples

curl "https://api.requiems.xyz/v1/tech/useragent?ua=Mozilla%2F5.0+%28Windows+NT+10.0%29+Chrome%2F120.0.0.0" \
  -H "requiems-api-key: YOUR_API_KEY"

import requests
from urllib.parse import quote

ua = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) Chrome/120.0.0.0"
url = f"https://api.requiems.xyz/v1/tech/useragent?ua={quote(ua)}"
headers = {"requiems-api-key": "YOUR_API_KEY"}

response = requests.get(url, headers=headers)
print(response.json())

const ua = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) Chrome/120.0.0.0";
const url = `https://api.requiems.xyz/v1/tech/useragent?ua=${encodeURIComponent(ua)}`;

const response = await fetch(url, {
  headers: { 'requiems-api-key': 'YOUR_API_KEY' }
});

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

require 'net/http'
require 'json'

ua = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) Chrome/120.0.0.0"
uri = URI("https://api.requiems.xyz/v1/tech/useragent?ua=#{URI.encode_www_form_component(ua)}")
request = Net::HTTP::Get.new(uri)
request['requiems-api-key'] = 'YOUR_API_KEY'

response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) do |http|
  http.request(request)
end

data = JSON.parse(response.body)
puts data['data']['browser']

Error Responses

bad_request

The ua query parameter is missing.

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