Free User Agent Parser API - Parse UA

Parameters

name	in	type	required	description
`user_agent`	query	string	required	User Agent String

Request

Send your key in the X-API-Key header. More languages and patterns live on the code examples page.

curl -s "https://apixies.io/api/v1/inspect-user-agent?user_agent=Mozilla%2F5.0%20%28Windows%20NT%2010.0%3B%20Win64%3B%20x64%29%20AppleWebKit%2F537.36%20%28KHTML%2C%20like%20Gecko%29%20Chrome%2F120.0.0.0%20Safari%2F537.36" \
  -H "X-API-Key: YOUR_API_KEY"

const res = await fetch("https://apixies.io/api/v1/inspect-user-agent?user_agent=Mozilla%2F5.0%20%28Windows%20NT%2010.0%3B%20Win64%3B%20x64%29%20AppleWebKit%2F537.36%20%28KHTML%2C%20like%20Gecko%29%20Chrome%2F120.0.0.0%20Safari%2F537.36", {
  headers: { "X-API-Key": "YOUR_API_KEY" }
});
const data = await res.json();
console.log(data);

$ch = curl_init("https://apixies.io/api/v1/inspect-user-agent?user_agent=Mozilla%2F5.0%20%28Windows%20NT%2010.0%3B%20Win64%3B%20x64%29%20AppleWebKit%2F537.36%20%28KHTML%2C%20like%20Gecko%29%20Chrome%2F120.0.0.0%20Safari%2F537.36");
curl_setopt_array($ch, [
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER => ["X-API-Key: YOUR_API_KEY"],
]);
$data = json_decode(curl_exec($ch), true);
curl_close($ch);

print_r($data);

import requests

res = requests.get(
    "https://apixies.io/api/v1/inspect-user-agent",
    params={"user_agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36"},
    headers={"X-API-Key": "YOUR_API_KEY"},
)
print(res.json())

Response

The result sits under data in the standard envelope. See the response format guide for errors and status codes.

returns

data.browser: Browser family and version, split into major, minor and patch.
data.os: Operating system family and version.
data.device: Device family, brand and model, when known.
data.is_bot: True when the string belongs to a known crawler or bot.

example response 200

{
    "status": "success",
    "http_code": 200,
    "code": "SUCCESS",
    "message": "User\u2011Agent inspection successful",
    "data": {
        "user_agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36",
        "is_bot": false,
        "device": {
            "family": "Other",
            "model": null,
            "brand": null
        },
        "os": {
            "family": "Windows",
            "major": "10",
            "minor": null,
            "patch": null
        },
        "browser": {
            "family": "Chrome",
            "major": "120",
            "minor": "0",
            "patch": "0"
        },
        "scanned_at": "2026-09-18T12:00:00+00:00"
    }
}

Authentication and limits

This endpoint needs an API key. Use the sandbox ("try it" above) to test it without registering. See the authentication guide for details.

Standard rate limits apply to this endpoint.

Common use cases

Analytics and visitor profiling

Parse User-Agent strings from your access logs to understand your audience's browser, OS, and device breakdown without relying on client-side analytics.

Bot detection and filtering

Identify crawlers, scrapers, and automated bots accessing your application. Route bot traffic differently or block known bad actors.

Responsive content serving

Detect mobile vs desktop devices server-side and serve optimized content, images, or layouts before the page even loads.

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guides

User Agent Parser API: Detect Browser, OS & Device Type tutorial Parse any user agent string into structured data. Get browser, OS, device type, and bot detection from one API call. Inc... Build a Bot Detection System with the User Agent API use-case Detect bots, crawlers, and scrapers by parsing User-Agent strings via API. Filter Googlebot, block scrapers, and keep an... Browser Analytics with the User Agent Parser API use-case Build a browser analytics dashboard by parsing UA strings from server logs. Break down traffic by browser, OS, and devic...

getting started

authentication code examples response format

explore

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resources

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