User Agent Generator API
Overview
To use User Agent Generator, you need an API key. You can get one by creating a free account and visiting your dashboard.
GET Endpoint
https://api.apiverve.com/v1/useragentgeneratorExample
How to call the User Agent Generator API in different programming languages.
curl -X GET \
"https://api.apiverve.com/v1/useragentgenerator?device=desktop" \
-H "X-API-Key: your_api_key_here"const response = await fetch('https://api.apiverve.com/v1/useragentgenerator?device=desktop', {
method: 'GET',
headers: {
'X-API-Key': 'your_api_key_here',
'Content-Type': 'application/json'
}
});
const data = await response.json();
console.log(data);import requests
headers = {
'X-API-Key': 'your_api_key_here',
'Content-Type': 'application/json'
}
response = requests.get('https://api.apiverve.com/v1/useragentgenerator?device=desktop', headers=headers)
data = response.json()
print(data)package main
import (
"fmt"
"io"
"net/http"
)
func main() {
req, _ := http.NewRequest("GET", "https://api.apiverve.com/v1/useragentgenerator?device=desktop", nil)
req.Header.Set("X-API-Key", "your_api_key_here")
req.Header.Set("Content-Type", "application/json")
client := &http.Client{}
resp, err := client.Do(req)
if err != nil {
panic(err)
}
defer resp.Body.Close()
body, _ := io.ReadAll(resp.Body)
fmt.Println(string(body))
}{
"status": "ok",
"error": null,
"data": {
"ua": "Mozilla/5.0 (Windows NT 6.4) AppleWebKit/537.36.0 (KHTML, like Gecko) Chrome/94.0.0.0 Safari/537.36.0",
"browser": {
"name": "Chrome",
"version": "94.0.0.0",
"major": "94"
},
"engine": {
"name": "Blink",
"version": "94.0.0.0"
},
"os": {
"name": "Windows",
"version": "10"
},
"device": {},
"cpu": {}
}
}Authentication
The User Agent Generator API requires authentication via API key. Include your API key in the request header:
X-API-Key: your_api_key_hereInteractive API Playground
Test the User Agent Generator API directly in your browser with live requests and responses.
Parameters
The following parameters are available for the User Agent Generator API:
Generate User Agent
| Parameter | Type | Required | Description | Default | Example |
|---|---|---|---|---|---|
device | string | required | The device type for the user agent string Supported values: desktopmobiletablet |
Response
The User Agent Generator API returns responses in JSON, XML, YAML, and CSV formats. The JSON response is shown in the Example section above; alternative formats below.
Other Response Formats
<?xml version="1.0" encoding="UTF-8"?>
<response>
<status>ok</status>
<error xsi:nil="true" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"/>
<data>
<ua>Mozilla/5.0 (Windows NT 6.4) AppleWebKit/537.36.0 (KHTML, like Gecko) Chrome/94.0.0.0 Safari/537.36.0</ua>
<browser>
<name>Chrome</name>
<version>94.0.0.0</version>
<major>94</major>
</browser>
<engine>
<name>Blink</name>
<version>94.0.0.0</version>
</engine>
<os>
<name>Windows</name>
<version>10</version>
</os>
<device>
</device>
<cpu>
</cpu>
</data>
</response>
status: ok
error: null
data:
ua: >-
Mozilla/5.0 (Windows NT 6.4) AppleWebKit/537.36.0 (KHTML, like Gecko)
Chrome/94.0.0.0 Safari/537.36.0
browser:
name: Chrome
version: 94.0.0.0
major: '94'
engine:
name: Blink
version: 94.0.0.0
os:
name: Windows
version: '10'
device: {}
cpu: {}
| key | value |
|---|---|
| ua | Mozilla/5.0 (Windows NT 6.4) AppleWebKit/537.36.0 (KHTML, like Gecko) Chrome/94.0.0.0 Safari/537.36.0 |
| browser | {name:Chrome,version:94.0.0.0,major:94} |
| engine | {name:Blink,version:94.0.0.0} |
| os | {name:Windows,version:10} |
| device | {} |
| cpu | {} |
Response Structure
All API responses follow a consistent structure with the following fields:
| Field | Type | Description | Example |
|---|---|---|---|
status | string | Indicates whether the request was successful ("ok") or failed ("error") | ok |
error | string | null | Contains error message if status is "error", otherwise null | null |
data | object | null | Contains the API response data if successful, otherwise null | {...} |
Learn more about response formats →
Response Data Fields
When the request is successful, the data object contains the following fields:
| Field | Type | Sample Value | Description |
|---|---|---|---|
ua | string | Complete user agent string representing browser environment | |
browser | object | - | |
â”” name | string | Name of the browser (e.g., Chrome, Firefox, Safari) | |
â”” version | string | Full browser version number including all segments | |
â”” major | string | Major version number of the browser | |
engine | object | - | |
â”” namePremium | string | JavaScript engine name (e.g., Blink, WebKit, Gecko) | |
â”” versionPremium | string | JavaScript engine version number | |
os | object | - | |
â”” name | string | Operating system name (e.g., Windows, macOS, Linux) | |
â”” version | string | Operating system version number | |
devicePremium | object | Device information object containing vendor and model details | |
cpuPremium | object | CPU architecture and processor information |
Headers
Only X-API-Key is required. Optional headers include Accept for response format negotiation (JSON, XML, or YAML), User-Agent, and X-Request-ID for request tracing. See all request headers →
GraphQL AccessALPHA
Access User Agent Generator through GraphQL to combine it with other API calls in a single request. Query only the user agent generator data you need with precise field selection, and orchestrate complex data fetching workflows.
Credit Cost: Each API called in your GraphQL query consumes its standard credit cost.
POST https://api.apiverve.com/v1/graphqlquery {
useragentgenerator(
input: {
device: "desktop"
}
) {
ua
browser {
name
version
major
}
engine {
name
version
}
os {
name
version
}
device {
}
cpu {
}
}
}Note: Authentication is handled via the x-api-key header in your GraphQL request, not as a query parameter.
CORS Support
The User Agent Generator API accepts cross-origin requests from any origin, so it can be called directly from browser-based applications without a proxy. See CORS support →
Rate Limiting
User Agent Generator requests are throttled per minute on the Free plan and unthrottled on paid plans. Exceeding the limit returns 429 Too Many Requests; rate-limit usage is reported in the X-RateLimit-Limit, X-RateLimit-Remaining, and X-RateLimit-Reset response headers. See per-plan limits and best practices →
Error Codes
The User Agent Generator API uses standard HTTP status codes — 200 on success, 400 for invalid parameters, 401 for missing or invalid keys, 403 for insufficient credits, 429 for rate-limit exhaustion, and 500/503 for server-side issues. Each error response includes an X-Request-ID header you can quote when contacting support. See full error handling guide →
SDKs for User Agent Generator
Official User Agent Generator packages on npm, PyPI, NuGet, and JitPack — plus a Postman collection and an OpenAPI spec. See the SDK guide →
No-Code Integrations
User Agent Generator works with Zapier, Make, Pipedream, n8n, and Power Automate using the same API key. See setup guides →
Frequently Asked Questions
How do I get an API key for User Agent Generator?
How many credits does User Agent Generator cost?
Each successful User Agent Generator API call consumes credits based on plan tier. Check the pricing section above for the exact credit cost. Failed requests and errors don't consume credits, so you only pay for successful user agent generator lookups.
Can I use User Agent Generator in production?
The free plan is for testing and development only. For production use of User Agent Generator, upgrade to a paid plan (Starter, Pro, or Mega) which includes commercial use rights, no attribution requirements, and guaranteed uptime SLAs. All paid plans are production-ready.
Can I use User Agent Generator from a browser?
What happens if I exceed my User Agent Generator credit limit?
When you reach your monthly credit limit, User Agent Generator API requests will return an error until you upgrade your plan or wait for the next billing cycle. You'll receive notifications at 80% and 95% usage to give you time to upgrade if needed.








