hubcap useragent
Override the browser’s user agent string.
When to use
Override the browser user agent string to test server-side user agent detection or mimic a specific browser or crawler. Use emulate for full device emulation including viewport and touch support alongside the user agent.
Usage
hubcap useragent <string>Arguments
| Argument | Type | Required | Description |
|---|---|---|---|
string | string | Yes | The user agent string to set |
Flags
None.
Output
| Field | Type | Description |
|---|---|---|
userAgent | string | The user agent string that was set |
{"userAgent":"Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)"}Errors
| Condition | Exit code | Stderr |
|---|---|---|
| Missing argument | 1 | usage: hubcap useragent <string> |
| Chrome not connected | 2 | error: connecting to Chrome: ... |
| Timeout | 3 | error: timeout |
Examples
Pretend to be Googlebot:
hubcap useragent "Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)"Pretend to be a specific desktop browser:
hubcap useragent "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36"Set the user agent, navigate, and verify the server responded differently:
hubcap useragent "Googlebot/2.1" && hubcap goto https://example.com && hubcap text "body"